SBE 37-SMP-ODO RS-232 Manual

User Manual

Release Date: 03/09/2015

Manual version

Firmware version

Software versions

SBE 37-SMP-ODO MicroCAT

C-T-ODO (P) Recorder

Conductivity, Temperature, Optical Dissolved Oxygen (pressure optional) Recorder with

RS-232 Interface & integral Pump

• 007

• 2.4.2 & later

• Seaterm V2 2.4.1 & later

• SBE Data Processing 7.23.2 & later

For most applications, deploy in orientation shown

(connector end down) for proper operation

Limited Liability Statement

Extreme care should be exercised when using or servicing this equipment. It should be used or serviced only by personnel with knowledge of and training in the use and maintenance of oceanographic electronic equipment.

SEA-BIRD ELECTRONICS, INC. disclaims all product liability risks arising from the use or servicing of this system. SEA-BIRD ELECTRONICS, INC. has no way of controlling the use of this equipment or of choosing the personnel to operate it, and therefore cannot take steps to comply with laws pertaining to product liability, including laws which impose a duty to warn the user of any dangers involved in operating this equipment. Therefore, acceptance of this system by the customer shall be conclusively deemed to include a covenant by the customer to defend, indemnify, and hold SEA-BIRD

ELECTRONICS, INC. harmless from all product liability claims arising from the use or servicing of this system.

2

Manual revision 007 Declaration of Conformity

Declaration of Conformity

SBE 37-SMP-ODO RS-232

3

Manual revision 007 Table of Contents SBE 37-SMP-ODO RS-232

Table of Contents

Limited Liability Statement ................................................................ 2

Declaration of Conformity .................................................................. 3

Table of Contents ................................................................................. 4

Section 1: Introduction ........................................................................ 6

About this Manual .............................................................................................6

Quick Start .........................................................................................................6

Unpacking MicroCAT .......................................................................................7

Shipping Precautions .........................................................................................8

Section 2: Description of MicroCAT .................................................. 9

System Description ............................................................................................9

Specifications ................................................................................................... 11

Dimensions and End Cap Connector ............................................................... 12

Cables and Wiring ........................................................................................... 13

Pump Operation ............................................................................................... 14

Minimum Conductivity Frequency for Pump Turn-On ............................ 14

Pumping Time and Speed ......................................................................... 14

Sample Timing ................................................................................................. 16

Battery Pack Endurance ................................................................................... 16

External Power ................................................................................................. 18

Cable Length and External Power ............................................................ 18

Section 3: Preparing MicroCAT for Deployment ........................... 20

Battery Pack Installation .................................................................................. 20

Software Installation ........................................................................................ 22

Power and Communications Test .................................................................... 22

Test Setup ................................................................................................. 22

Test ........................................................................................................... 23

Section 4: Deploying and Operating MicroCAT ............................. 28

Sampling Modes .............................................................................................. 28

Polled Sampling ........................................................................................ 29

Autonomous Sampling (Logging commands) .......................................... 30

Serial Line Synchronization (Serial Line Sync) ....................................... 31

Real-Time Data Acquisition ............................................................................ 32

Timeout Description ........................................................................................ 32

Command Descriptions .................................................................................... 33

Data Formats .................................................................................................... 53

Optimizing Data Quality / Deployment Orientation ........................................ 56

Setup for Deployment ...................................................................................... 57

Deployment ...................................................................................................... 58

Recovery .......................................................................................................... 59

Uploading and Processing Data ....................................................................... 60

Editing Raw Data File ...................................................................................... 68

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Manual revision 007 Table of Contents SBE 37-SMP-ODO RS-232

Section 5: Routine Maintenance and Calibration ........................... 69

Corrosion Precautions ...................................................................................... 69

Connector Mating and Maintenance ................................................................ 69

Conductivity Cell and Dissolved Oxygen Sensor Maintenance ...................... 70

Plumbing Maintenance .................................................................................... 70

Handling Instructions for Plastic ShallowCAT ................................................ 71

Replacing AA Cells ......................................................................................... 72

O-Ring Maintenance ........................................................................................ 72

Pressure Sensor (optional) Maintenance .......................................................... 72

Replacing Anti-Foulant Devices – Mechanical Design Change ...................... 73

Replacing Anti-Foulant Devices (SBE 37-SI, SM, IM) ................................... 74

Sensor Calibration ............................................................................................ 75

Section 6: Troubleshooting ................................................................ 77

Problem 1: Unable to Communicate with MicroCAT ..................................... 77

Problem 2: No Data Recorded ......................................................................... 77

Problem 3: Unreasonable T, C, P, or D.O. Data .............................................. 77

Problem 4: Salinity Spikes ............................................................................... 78

Glossary .............................................................................................. 79

Appendix I: Functional Description ................................................. 81

Sensors ............................................................................................................. 81

Sensor Interface ............................................................................................... 81

Real-Time Clock .............................................................................................. 81

Appendix II: Electronics Disassembly/Reassembly ........................ 82

Appendix III: Command Summary ................................................. 84

Appendix IV: AF24173 Anti-Foulant Device .................................. 88

Appendix V: Replacement Parts ...................................................... 92

Appendix VI: Manual Revision History .......................................... 94

Index .................................................................................................... 96

5

Manual revision 007 Section 1: Introduction SBE 37-SMP-ODO RS-232

Section 1: Introduction

This section includes a Quick Start procedure, photos of a typical MicroCAT shipment, and battery shipping precautions.

About this Manual

This manual is to be used with the SBE 37-SMP-ODO MicroCAT

Conductivity, Temperature, and Optical Dissolved Oxygen Recorder (pressure optional) with RS-232 Serial interface, internal Memory, and integral Pump.

It is organized to guide the user from installation through operation and data collection. We’ve included detailed specifications, command descriptions, maintenance and calibration information, and helpful notes throughout the manual.

Sea-Bird welcomes suggestions for new features and enhancements of our products and/or documentation. Please contact us with any comments or suggestions ([email protected] or 425-643-9866). Our business hours are

Monday through Friday, 0800 to 1700 Pacific Standard Time (1600 to 0100

Universal Time) in winter and 0800 to 1700 Pacific Daylight Time (1500 to

0000 Universal Time) the rest of the year.

Quick Start

Follow these steps to get a Quick Start using the MicroCAT.

The manual provides step-by-step details for performing each task:

1. Install lithium AA cells and test power and communications (Section 3:

Preparing MicroCAT for Deployment).

2. Deploy the MicroCAT (Section 4: Deploying and Operating MicroCAT):

A. Install new lithium AA cells if necessary.

B. Ensure all data has been uploaded, and then send InitLogging to make entire memory available for recording if desired.

C. Set date and time, and establish setup and logging parameters.

D. Check status (DS) and calibration coefficients (DC) to verify setup.

E. If you will be sampling autonomously, use one of the following sequences to start logging:

• StartNow to start logging now, sampling every

SampleInterval= seconds.

• StartDateTime= and StartLater to start logging at specified date and time, sampling every SampleInterval= seconds.

F. Remove yellow protective label from plumbing intake and exhaust.

Remove conductivity cell guard, and verify AF24173 Anti-Foulant

Devices are installed. Replace conductivity cell guard. Leave label off for deployment.

G. Install dummy plug or cable connector, and locking sleeve.

H. Deploy MicroCAT, using Sea-Bird or customer-supplied hardware.

For most applications, mount the MicroCAT with the connector at the bottom for proper operation.

I. Upload data from memory.

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Manual revision 007

Unpacking MicroCAT

Section 1: Introduction SBE 37-SMP-ODO RS-232

Shown below is a typical MicroCAT shipment.

SBE 37-SMP-ODO MicroCAT

I/O cable

Spare hardware and o-ring kit

12 AA lithium cells

Conductivity cell cleaning solution (Triton-X)

Software, and Electronic Copies of

Software Manuals and User Manual

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Manual revision 007 Section 1: Introduction SBE 37-SMP-ODO RS-232

Shipping Precautions

DISCLAIMER / WARNING:

The shipping information provided in is a general overview of lithium shipping requirements; it does not provide complete shipping information. The information is provided as a courtesy, to be used as a guideline to assist properly trained shippers.

These materials do not alter, satisfy, or influence any federal or state requirements. These materials are subject to change due to changes in government regulations. Sea-Bird accepts no liability for loss or damage resulting from changes, errors, omissions, or misinterpretations of these materials.

See the current edition of the IATA Dangerous Good Regulations for

complete information on packaging, labeling, and shipping document requirements.

WARNING!

Do not ship assembled battery pack.

For its main power supply, the MicroCAT uses twelve 3.6-volt AA lithium cells (Saft LS14500). The MicroCAT was shipped from the factory with the cells packaged separately within the shipping box (not inside MicroCAT).

Assembled battery pack

BATTERY PACKAGING

Cells are packed in heat-sealed plastic, and then placed in bubble-wrap outer sleeve and strong packaging for shipment.

If the shipment is not packaged as described above, or does not meet the requirements below, the shipment is considered Dangerous/Hazardous Goods, and must be shipped according to those rules.

1-5 MicroCATs and associated cells, but no spares

1-5 MicroCATs and associated cells, plus up to 2 spare cell sets/MicroCAT

Spares

(without MicroCATs) –

Note new rules as of

January 1, 2013

UN #

Packing Instruction (PI) #

Passenger Aircraft

Cargo Aircraft

Labeling Requirement

Airway Bill (AWB)

UN3091

969

Yes

Yes

1 **

UN3091

969

No

Yes

1, 2 **

Must be shipped as

Class 9 Dangerous Goods.

If re-shipping spares, you must have your own Dangerous Goods program.

Requirement

Yes * Yes *

* AWB must contain following information in Nature and Quantity of Goods Box: “Lithium Metal Batteries”, “Not Restricted”, “PI #”

** Labels are defined below: xxx.xxxx.xxxx

1

– Shipper must provide an emergency phone number

Note:

Remove the cells before returning the

MicroCAT to Sea-Bird. Do not return used cells when shipping the

MicroCAT for calibration or repair. All setup information is preserved when the cells are removed.

2

Install the battery pack assembly in the MicroCAT for testing (see Battery

Installation in Section 3). If you will re-ship the MicroCAT after testing:

1. Remove the battery pack assembly from the MicroCAT.

2. Remove the cells from the battery pack assembly.

3. Pack the cells properly for shipment, apply appropriate labels, and prepare appropriate shipping documentation.

8

Manual revision 007 Section 2: Description of MicroCAT SBE 37-SMP-ODO RS-232

Section 2: Description of MicroCAT

This section describes the functions and features of the SBE 37-SMP-ODO

MicroCAT, including specifications, dimensions, end cap connectors, sample timing, battery pack endurance, and external power.

System Description

Plastic ShallowCAT housing shown; titanium housing available

For most applications, deploy in orientation shown (connector end down) for proper operation – see Optimizing Data Quality /

Deployment Orientation in Section 4:

Deploying and Operating MicroCAT

The SBE 37-SMP-ODO MicroCAT is a high-accuracy conductivity and temperature recorder (pressure optional) with internal battery pack and nonvolatile memory, an integral pump, and an RS-232 serial interface. The

MicroCAT also includes an Optical Dissolved Oxygen (DO) sensor (SBE 63).

Designed for moorings and other long-duration, fixed-site deployments,

MicroCATs have non-corroding housings. Housing ratings are:

Main Body SBE 63 DO Sensor SBE 63 Mount Overall Depth

Plastic: 350 m Plastic: 600 m

Titanium: 7000 m Titanium: 7000 m

Plastic: 5000 m

Plastic: 5000 m

350 m

5000 m

Titanium: 7000 m Titanium: 7000 m Titanium: 7000 m 7000 m

* For a MicroCAT with a pressure sensor, the overall depth rating is the

smaller of the pressure sensor depth rating and the rating described above.

Communication with the MicroCAT is over an internal, 3-wire, RS-232C link. Over 50 different commands can be sent to the MicroCAT to provide status display, data acquisition setup, data retrieval, and diagnostic tests.

User-selectable operating modes include:

• Autonomous sampling – At pre-programmed intervals, the MicroCAT wakes up, runs the pump, samples, stores the data in its FLASH memory, and goes to sleep. If desired, real-time data can also be transmitted.

• Polled sampling – On command, the MicroCAT runs the pump, takes one sample, and transmits the data. Alternatively, the MicroCAT can be commanded to transmit the last sample in its memory while it is sampling autonomously. Polled sampling is useful for integrating the MicroCAT with satellite, radio, or wire telemetry equipment.

• Serial line sync – In response to a pulse on the serial line, the MicroCAT wakes up, runs the pump, samples, stores the data in its FLASH memory, and goes to sleep. If desired, real-time data can also be transmitted. Serial line sync provides an easy method for synchronizing MicroCAT sampling with other instruments such as Acoustic Doppler Current Profilers

(ADCPs) or current meters, without drawing on their battery or memory resources.

The MicroCAT can be deployed in two ways:

• Cable installed and connected to RS-232 or USB port on computer –

The MicroCAT can be remotely controlled, allowing for polled sampling or serial line sync, or for periodic requests of data from the memory. If desired, data can be periodically uploaded while the MicroCAT remains deployed. Additionally, the MicroCAT can be externally powered.

• Dummy plug installed – The MicroCAT cannot be remotely controlled.

Autonomous sampling is programmed before deployment, and data is uploaded after recovery.

Calibration coefficients stored in EEPROM allow the MicroCAT to transmit conductivity, temperature, pressure, and oxygen data in engineering units. The

MicroCAT retains the temperature and conductivity sensors used in the

SeaCAT and SeaCATplus family. The MicroCAT’s aged and pressure-

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Manual revision 007

Air bleed hole in top

Oxygen sensor

Conductivity cell

Thermistor

Intake Exhaust

Anti-Foulant

Devices

Shown with conductivity cell guard removed

Notes:

• Help files provide detailed information on the use of the software.

• A separate software manual on

CD-ROM contains detailed information on the setup and use of SBE Data Processing.

• Sea-Bird supplies the current version of our software when you purchase an instrument. As software revisions occur, we post the revised software on our website. See our website for the latest software version number, a description of the software changes, and instructions for downloading the software.

Section 2: Description of MicroCAT SBE 37-SMP-ODO RS-232 protected thermistor has a long history of exceptional accuracy and stability

(typical drift is less than 0.002 °C per year). Electrical isolation of the conductivity electronics eliminates any possibility of ground-loop noise.

The MicroCAT’s internal-field conductivity cell is immune to proximity errors and unaffected by external fouling. The conductivity cell guard retains the expendable AF24173 Anti-Foulant Devices.

The MicroCAT’s integral pump runs each time the MicroCAT takes a sample, providing the following advantages over a non-pumped system:

• Improved conductivity and oxygen response – The pump flushes the previously sampled water from the conductivity cell and oxygen sensor plenum, and brings a new water sample quickly into the system.

• Improved anti-foul protection – Water does not freely flow through the conductivity cell between samples, allowing the anti-foul concentration inside the system to maintain saturation.

• Improved measurement correlation – The individually calibrated SBE 63

Optical Dissolved Oxygen sensor is integrated within the CTD flow path, providing optimum correlation with CTD measurements.

With Adaptive Pump Control, the MicroCAT calculates the pump run time for best dissolved oxygen accuracy, as a function of the temperature and pressure of the previous sample.

Note that the MicroCAT was designed to be deployed as shown, with the

sensor end up, providing an inverted U-shape for the flow. This orientation prevents sediment from being trapped in the plumbing. An air bleed hole allows air to escape from the plumbing, so the pump will prime. See

Optimizing Data Quality / Deployment Orientation in Section 4: Deploying

and Operating MicroCAT.

The MicroCAT’s optional strain-gauge pressure sensor is available in the following pressure ranges: 20, 100, 350, 600, 1000, 2000, 3500, and

7000 meters. Compensation of the temperature influence on pressure offset and scale is performed by the MicroCAT’s CPU.

Future upgrades and enhancements to the MicroCAT firmware can be easily installed in the field through a computer serial port and the bulkhead connector on the MicroCAT, without the need to return the MicroCAT to Sea-Bird.

The MicroCAT is supplied with a powerful Windows software package,

Seasoft

©

V2, which includes:

• Deployment Endurance Calculator– program for determining deployment length based on user-input deployment scheme, instrument power requirements, and battery pack capacity.

• SeatermV2 – terminal program for easy communication and data retrieval. SeatermV2 is a launcher, and launches the appropriate terminal program for the selected instrument (Seaterm232 for RS-232 instruments such as this MicroCAT).

• SBE Data Processing - program for calculation and plotting of conductivity, temperature, pressure (optional), oxygen, and derived variables such as salinity, sound velocity, depth, density, etc.

10


Specifications

Measurement Range

Temperature

-5 to +45

Conductivity

0 to 7

(0 to 70 mS/cm)

Pressure

0 to full scale range:

20 / 100 / 350 / 600 / 1000/

2000 / 3500 / 7000 meters

(expressed in meters of deployment depth capability)

Dissolved Oxygen

Initial Accuracy

± 0.002

(-5 to 35 °C)

;

± 0.01

(35 to 45 °C)

± 0.0003

(0.003 mS/cm)

Typical Stability

Resolution

0.0002

°C

/ month

0.0001 °C

0.0003

(0.003 mS/cm) / month

0.00001

(0.0001 mS/cm)

Sensor Calibration

(measurement outside these ranges may be at slightly reduced accuracy due to extrapolation errors)

Memory

+1 to +32

°C

0 to 6; physical calibration over range 2.6 to 6 S/m, plus zero conductivity (air)

8 Mbyte non-volatile FLASH memory

± 0.1% of full scale range

0.05% of full scale range / year

0.002% of full scale range

Ambient pressure to full scale range in 5 steps

See SBE 63 Optical

Dissolved Oxygen

Sensor manual

Data Storage

Real-Time Clock

Internal Battery

Pack

External Power

Power Consumption

Housing Material and Depth Rating

Weight

(with mooring guide and clamp)

Conductivity & temperature: 6 bytes/sample (3 bytes each). Oxygen: 6 bytes/sample.

Time: 4 bytes/sample. Pressure (optional): 5 bytes/sample.

Recorded Parameters Memory Space (number of samples)

C, T, DO, and time 500,000

C, T, P, DO, and time 381,000

32,768 Hz TCXO accurate to ±1 minute/year.

Nominal 7.8 Amp-hour pack consisting of 12 AA Saft LS 14500 lithium cells (3.6 V and

2.6 Amp-hours each), with 3 strings of 4 cells. For battery pack endurance calculations, derated capacity of 257 KJoules. See Battery Pack Endurance for example sampling calculation. See

Shipping Precautions in Section 1: Introduction.

Note: Saft cells can be purchased from Sea-Bird or other sources.

See Saft’s website for suppliers (www.saftbatteries.com).

Alternatively, substitute either of the following:

- Tadiran TL-4903, AA (3.6 V and 2.4 Amp-hours each) (www.tadiran.com)

- Electrochem 3B0064/BCX85, AA (3.9 V and 2.0 Amp-hours each) (www.electrochemsolutions.com)

0.25 Amps at 9 - 24 VDC. To avoid draining internal battery pack, use an external voltage greater than 16 VDC. See External Power.

• Quiescent: 30 microAmps (0.0004 Watts)

• Pump: 0.12 Watts (see Pump Operation for time that pump runs)

• CTD-DO Sample Acquisition, with pressure (excluding pump):

Real-time data enabled – 0.17 Watts (see Sample Timing for acquisition time)

Real-time data disabled – 0.155 Watts (see Sample Timing for acquisition time)

• CTD-DO Sample Waiting (pump running, not sampling), with pressure (excluding pump):

Real-time data enabled and receive line valid – 0.056 Watts

Real-time enabled and receive line not valid – 0.016 Watts

Real-time data disabled – 0.016 Watts

• CTD-DO Between Samples, with pressure:

Real-time data enabled and receive line valid – 0.056 Watts

Real-time enabled and receive line not valid – 0.0004 Watts

Real-time data disabled – 0.0004 Watts

• Communications: 0.065 Watts

Plastic main body; plastic dome and plastic mount for SBE 63 DO sensor : 350 m (1150 ft)

Titanium main body; titanium dome and plastic mount for SBE 63 DO sensor: 5000 m (16,400 ft)

Titanium main body; titanium dome and titanium mount for SBE 63 DO sensor: 7000 m (23,000 ft)

Plastic main body; plastic dome and plastic mount for SBE 63 DO sensor:

3.4 kg (7.5 lbs) in air, 1.5 kg (3.3 lbs) in water

Titanium main body; titanium dome and plastic mount for SBE 63 DO sensor:

4.2 kg (9.2 lbs) in air, 2.3 kg (5.0 lbs) in water

Additional weight for titanium mount for SBE 63 (for depths > 5000 m): 0.5 kg (1.0 lbs) in air

CAUTION:

See Section 5: Routine Maintenance and Calibration for handling instructions for the plastic ShallowCAT housing.

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Manual revision 007 Section 2: Description of MicroCAT

Dimensions and End Cap Connector

Note:

For most applications, deploy in the orientation shown (connector end down) for proper operation.


Note:

103 mm dimension is for plastic housing; titanium housing dome is 9 mm smaller.

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Manual revision 007

Cables and Wiring

Section 2: Description of MicroCAT SBE 37-SMP-ODO RS-232

13

Manual revision 007

Pump Operation


Note:

The pump continues to run while the

MicroCAT takes the sample. See

Sample Timing below for the time to take each sample, which varies depending on the sampling mode, command used to start sampling, whether real-time data is transmitted, and whether the MicroCAT includes a pressure sensor.

Minimum Conductivity Frequency for Pump Turn-On

The MicroCAT’s integral pump is water lubricated; running it dry for an extended period of time will damage it. To prevent the pump from running dry while sampling, the MicroCAT checks the raw conductivity frequency (Hz) from the last sample against the user-input minimum conductivity frequency

(MinCondFreq=). If the raw conductivity frequency is greater than

MinCondFreq, it runs the pump before taking the sample; otherwise it does not run the pump.

If the minimum conductivity frequency is too close to the zero conductivity

frequency (from the MicroCAT Calibration Sheet), the pump may turn on when the MicroCAT is in air, as a result of small drifts in the electronics.

Some experimentation may be required to control the pump, particularly in fresh water applications.

By setting MinCondFreq= to an appropriate value, you can start logging in the lab or on the ship in dry conditions; the pump will not run until you deploy the MicroCAT. Upon recovery, the MicroCAT will continue logging data but the pump will stop running, so a delay in getting the MicroCAT to the lab to send the Stop command will not damage the pump.

Pumping Time and Speed

The pump runs before and during sampling, providing flushing of the system consistent with the calibration of the oxygen sensor at our factory. The amount of time that the pump runs for each sample is a function of whether the

Adaptive Pump Control is enabled.

• If enabled (AdaptivePumpControl=Y), the MicroCAT calculates the pump time before each sample for best oxygen accuracy, as a function of the temperature and pressure of the previous sample (temperature and pressure influence the oxygen sensor time constant). Pump time increases with increasing pressure and decreasing temperature. The pump continues to run while sampling. See next page for algorithm.

• If not enabled (AdaptivePumpControl=N), the pump runs for a user-programmable amount of time (a multiple of the oxygen sensor response time) before each sample, and then continues to run while sampling. Adaptive pump control should be disabled only for testing

and calibration.

pump time = OxNTau * OxTau20

where

OxTau20 = oxygen calibration coefficient (OxTau20=)

OxNTau = pump time multiplier (OxNTau=)

For testing and/or to remove sediment from inside the plumbing, the pump can be manually turned on and off with the PumpOn and PumpOff commands.

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Manual revision 007

Notes:

• OxTau20 is programmed into the

MicroCAT at the factory

( OxTau20=).

• If the MicroCAT does not include the optional pressure sensor, the

Adaptive Pump Control algorithm uses

ReferencePressure=

in place of the measured pressure.

• The calculated Pump Time does not include the pumping while sampling.


The Adaptive Pump Control algorithm and operation is detailed below. ft = A + (B * T) + (C * T fp = e

(pcor * P)

2

) tau = OxTau20 * ft * fp (minimum tau 2.0, maximum tau 30.0) pump time = OxNTau * tau (minimum pump time 3.0)

where

A = 2.549

B = -1.106 x 10

-1

C = 1.571 x 10

-3 pcor = 1.45 x 10

-4

OxTau20 = oxygen calibration coefficient (OxTau20=)

OxNTau = pump time multiplier (OxNTau=)

P = measured pressure (decibars)

T = measured temperature (°C)

Looking at pump times in the range of oceanographic values, and using a typical OxTau20 value of 5.5 and OxNTau value of 7.0:

T

(°C)

P

(db)

Ft Fp

-3 1500 2.89 1.24

-3

0

0

0

2.89 1.0

2.549 1.0

0 1500 2.549 1.24

4 0 2.132 1.0

4 1500 2.132 1.24

20 0 0.9654 1.0

20 1500 0.9654 1.24

(for OxTau20=5.5 and OxNTau=7.0)

Tau

19.7

15.9

14.0

17.3

11.7

14.5

5.3

6.6

Pump Time

before sampling (sec)

138

111

98

121

82

102

37

46

Note that the adaptive pump control operation can impact the interval

between samples. The total time for each sample is the calculated pump time plus the actual sampling time (the pump continues to run while sampling).

The MicroCAT requires a minimum of 3 seconds after taking a sample to the start of the next sampling interval. If the time required to run the pump is too large, it will not be able to take samples at the user-programmed

SampleInterval=. If that occurs, the MicroCAT starts the next sampling interval 5 seconds after the end of the previous sampling interval.

Sea-Bird recommends that you calculate the expected pumping time based on the algorithm above, the planned deployment pressure, and the worst

(i.e., the coldest) expected temperature. Do not set the sample interval

(SampleInterval=) to less than

(pumping time + sampling time + 5 seconds).

15


Sample Timing

Notes:

• Acquisition time shown does not include time to transmit real-time data, which is dependent on baud rate ( BaudRate=) and number of characters being transmitted

(defined by

OutputFormat= and

OutputSal=).

• Time stored and output with the data is the time at the start of the sample, after the MicroCAT wakes up, runs the pump, and prepares to sample.

Sample timing is dependent on several factors, including sampling mode, command used to start sampling, whether real-time data is transmitted, and whether the MicroCAT includes a pressure sensor

Autonomous Sampling (time between samples = SampleInterval) or

Serial Line Sync

Power on time for each sample while logging:

• Without pressure, no real-time data: power-on time = 2.4 seconds

• Without pressure, with real-time data: power-on time = 2.8 seconds

If the MicroCAT includes a pressure sensor, add 0.4 seconds to the time.

Polled Sampling

Time from receipt of take sample command to beginning of reply:

• Without pressure: power-on time = 2.7 seconds

If the MicroCAT includes a pressure sensor, add 0.4 seconds to the time.

Battery Pack Endurance

Notes:

•

If the MicroCAT is logging data and the battery pack voltage is less than

7.1 volts for five consecutive scans, the MicroCAT halts logging.

•

Sea-Bird recommends using the capacity value of 6.0 Amp-hours for the Saft cells as well as for the alternate cell types

(Tadiran TL-4903 and

Electrochem 3B0064/BCX85 AA).

•

The 37-SMP-ODO uses a battery pack with a yellow cover plate.

Older MicroCATs without dissolved oxygen use a battery pack with a red cover plate;

the wiring of that pack is different from this one, and cannot be used with the

37-SMP-ODO.

•

See Specifications above for data storage limitations.

The battery pack (4 cells in series, 3 parallel strings) has a nominal capacity of

7.8 Amp-hours (2.6 Amp-hours * 3). For planning purposes, to account for the

MicroCAT’s current consumption patterns and for environmental conditions affecting cell performance, Sea-Bird recommends using a conservative

value of 6.0 Amp-hours.

• Power consumption is defined above in Specifications.

• The time required for data acquisition for each sample is defined above in

Sample Timing.

• The pump time using the Adaptive Pump Control algorithm is described above in Pumping Time and Speed.

So, battery pack endurance is highly dependent on the application. An example is shown below for one sampling scheme. You can use the

Deployment Endurance Calculator to determine the maximum deployment length, instead of performing the calculations by hand.

16


Example:

A MicroCAT with pressure is sampling autonomously every 10 minutes (6 samples/hour). Real-time data is enabled, but the receive line is not valid between samples, to minimize the power required from the

MicroCAT and from the controller. Adaptive Pump Control is enabled. The MicroCAT is set up to transmit salinity, sound velocity, and specific conductivity as well as C, T, P, and DO. The MicroCAT is to be deployed at approximately 500 dbar; expected temperature there is approximately 10 °C. Oxtau20 (programmed into the MicroCAT at the factory) is 5.5, and OxNTau is 7.0. How long can it be deployed?

CTD-DO Sampling = 0.17 Watts * 3.2 seconds sampling time = 0.544 Joules/sample

In 1 hour, sampling consumption = 6 samples/hour * 0.544 Joules/sample = 3.26 Joules/hour

Pump

* 10 * 10) = 1.600 ft = A + (B * T) + (C * T

fp = e

(pcor * P) (1.45e-4

2

) = 2.549 + (-1.106 x 10

= 1.075

-1

* 10) + (1.571 x 10

-3

=

e

tau = OxTau20 * ft * fp = 5.5 * 1.600 * 1.075 = 9.46

Pump Time = OxNTau * tau = 7.0 * 9.46 = 66.2 sec (> Minimum Pump Time = 3 sec)

From above, pump runs for an additional 3.2 sec while sampling.

Pumping, 0.12 Watts * (66.2 + 3.2) seconds = 8.33 Joules/sample

In 1 hour, pump consumption = 6 samples/hour * 8.33 Joules/sample = 49.98 Joules/hour

CTD-DO Waiting while pump running = 0.016 Watts * 66.2 seconds = 1.06 Joules/sample

In 1 hour, consumption = 6 samples * 1.06 Joules/sample = 6.36 Joules/hour

CTD-DO Waiting between Samples = 0.0004 Watts * (600 – [66.2 + 3.2]) seconds = 0.21 Joules/sample

In 1 hour, consumption = 6 samples/hour * 0.21 Joules/sample = 1.26 Joules/hour

Communications –outputting temperature, conductivity, pressure, oxygen, salinity, sound velocity, specific conductivity, sample number; see Data Formats in Section 4: Deploying and Operating MicroCAT.

Number of characters transmitted/sample = 7(T) + 2(comma&space) + 7(C) + 2 + 7(P) + 2 + 6(DO) + 2 +

8(salinity) + 2 + 8 (sound velocity) + 2 + 7(specific conductivity) + 2(comma&space) + 11 (date) + 2 +

8 (time) + 2 + 6 = 93

Time required to transmit data = 93 characters * 10 bits/character / 9600 baud = 0.1 sec

Communication power/sample = 0.065 Watts * 0.1 sec = 0.065 Joules/sample

In 1 hour, consumption = 6 samples/hour * 0.065 Joules/sample = 0.04 Joules/hour

Total consumption / hour = 3.26 + 49.98 + 6.36 + 1.26 + 0.04 = 60.9 Joules/hour

Battery pack capacity

Assume nominal voltage of 14 V and 85% DC/DC converter efficiency

14 V * 6 Amp-hours * 3600 seconds/hour * 0.85 = 257040 Joules

Capacity = 257040 Joules / 60.9 Joules/hour = 4220 hours = 175 days = 0.48 years

Number of samples = 4220 hours * 6 samples/hour = 25,320 samples

17


External Power

Note:

See Real-Time Data Acquisition in Section 4: Deploying and

Operating MicroCAT for baud rate limitations on cable length if transmitting real-time data.

Note:

Common wire resistances:

Gauge

12

14

16

18

19

20

22

24

26

28

Resistance (ohms/foot)

0.0016

0.0025

0.0040

0.0064

0.0081

0.0107

0.0162

0.0257

0.0410

0.0653

The MicroCAT can be powered from an external source that supplies

0.25 Amps at 9-24 VDC. The internal lithium battery pack is diode-OR’d with the external source, so power is drawn from whichever voltage source is higher. The MicroCAT can also be operated from the external supply without having the battery pack installed. Electrical isolation of conductivity prevents ground loop noise contamination in the conductivity measurement.

Cable Length and External Power

There are two issues to consider if powering the MicroCAT externally:

• Limiting the communication IR loss to 1 volt if transmitting real-time

data; higher IR loss will cause the instrument to transmit data that does not meet the RS-232 communication standard.

• Supplying enough power at the power source so that sufficient power is available at the instrument after considering IR loss.

Each issue is discussed below.

Limiting Communication IR Loss to 1 Volt if Transmitting Real-Time Data

The limit to cable length is typically reached when the maximum

communication current times the power common wire resistance is more than

1 volt.

V

limit

= 1 volt = IR limit

Maximum cable length = R limit

/ wire resistance per foot

where I = communication current required by MicroCAT (see Specifications:

0.065 Watts / 13 Volts = 0.005 Amps = 5 milliAmps).

Example 1 – For 20 gauge wire, what is maximum distance to transmit power to MicroCAT if transmitting real-time data?

For 5 milliAmp communications current, R limit

= V

limit

/ I = 1 volt / 0.005 Amps = 200 ohms

For 20 gauge wire, resistance is 0.0107 ohms/foot.

Maximum cable length = 200 ohms / 0.0107 ohms/foot = 18691 feet = 6568 meters

Example 2 – Same as above, but there are 4 MicroCATs powered from the same power supply.

For 4.3 milliAmp communications current, R limit

= V

limit

/ I = 1 volt / (0.005 Amps * 4 MicroCATs) = 50 ohms

Maximum cable length = 50 ohms / 0.0107 ohms/foot = 4672 feet = 1424 meters (to MicroCAT furthest from power source)

18


Supplying Enough Power to MicroCAT

Another consideration in determining maximum cable length is supplying enough power at the power source so that sufficient voltage is available, after

IR loss in the cable (from the 0.25 Amp turn-on transient, two-way

resistance), to power the MicroCAT. The power requirement varies, depending on whether any power is drawn from the battery pack:

• Provide at least 16 volts, after IR loss, to prevent the MicroCAT from drawing any power from the battery pack (if you do not want to draw down the battery pack): V - IR > 16 volts

• Provide at least 9 volts, after IR loss, if allowing the MicroCAT to draw down the battery pack or if no battery pack is installed: V - IR > 9 volts

where I = MicroCAT turn-on transient (0.25 Amps; see Specifications).

Example 1 – For 20 gauge wire, what is maximum distance to transmit power to MicroCAT if using 12 volt power source and deploying MicroCAT with no battery pack?

V - IR > 9 volts 12 volts - (0.25 Amps) * (0.0107 ohms/foot * 2 * cable length) > 9 volts

3 volts > (0.25 Amps) * (0.0107 ohms/foot * 2 * cable length) Cable length < 560 ft = 170 meters

Note that 170 m << 6568 m (maximum distance if MicroCAT is transmitting real-time data), so IR drop in power is controlling factor for this example. Using a higher voltage power supply or a different wire gauge would increase allowable cable length.

Example 2 – Same as above, but there are 4 MicroCATs powered from same power supply.

V - IR > 9 volts 12 volts - (0.25 Amps * 4 MicroCATs) * (0.0107 ohms/foot * 2 * cable length) > 9 volts

3 volts > (0.25 Amps * 4 MicroCATs) *(0.0107 ohms/foot * 2 * cable length)

Cable length < 140 ft = 42 meters (to MicroCAT furthest from power source)

19

Manual revision 007 Section 3: Preparing MicroCAT for Deployment SBE 37-SMP-ODO RS-232

Section 3:

Preparing MicroCAT for Deployment

This section describes the pre-check procedure for preparing the MicroCAT for deployment. Installation of the battery pack, installation of Sea-Bird software, and testing power and communications are discussed.

Battery Pack Installation

WARNING!

Do not ship the MicroCAT with battery pack installed. See Shipping

Precautions in Section 1:

Introduction.

Cells in heat-sealed plastic, bubble-wrap outer sleeve, and strong packaging.

CAUTION:

See Section 5: Routine Maintenance

and Calibration for handling instructions for the plastic

ShallowCAT housing.

2 screws securing connector end cap

(screws shown partially removed)

Cable mounting guide

Description of Cells and Battery Pack

Sea-Bird supplies twelve 3.6-volt AA lithium cells, shipped with the

MicroCAT in a heat-sealed plastic bag placed in bubble wrap and a cardboard box. The empty cell holder is installed inside the MicroCAT for shipment.

No soldering is required when assembling the battery pack.

Installing Cells and Battery Pack

1. Remove the I/O connector end cap:

A. Wipe the outside of the end cap and housing dry, being careful to remove any water at the seam between them.

B. Remove the 2 cap screws on the sides of the housing. Do not remove any other screws.

Note: Sea-Bird ships the MicroCAT with a 9/64-inch Allen wrench for these screws.

C. Remove the I/O end cap by twisting the end cap counter clockwise; the end cap will release from the housing. Pull the end cap out.

D. The end cap is electrically connected to the electronics with a Molex connector. Holding the wire cluster near the connector, pull gently to detach the female end of the connector from the pins.

E. Remove any water from the O-ring mating surfaces inside the housing with a lint-free cloth or tissue.

F. Put the end cap aside, being careful to protect the O-rings from damage or contamination.

Twist end cap counter clockwise, twisting cap screw out of machined slot; end cap releases from housing.

O-rings

Molex connector

20


Handle

Roll 2

O-rings out of grooves

Roll

2 O-rings into grooves after inserting cells

Pins on shaft

CAUTION:

Do not use Parker O-Lube, which is petroleum based; use only

Super O-Lube.

Loosen captured screw

2. Remove the battery pack assembly from the housing:

A. Loosen the captured screw from the battery pack cover plate, using the 7/64-inch Allen wrench included with the shipment.

B. Lift the battery pack assembly straight out of the housing, using the handle.

3. Keep the handle in an upright position. Holding the edge of the yellow cover plate, unscrew the cover plate from the battery pack assembly.

Note: Older MicroCATs without dissolved oxygen use a battery pack with a red cover plate; the wiring of that pack is different from this one, and

cannot be used with the 37-SMP-ODO.

4. Roll the 2 O-rings on the outside of the battery pack out of their grooves.

5. Insert each cell into the pack, alternating positive (+) end first and negative (-) end first to match the labels on the pack.

6. Roll the 2 O-rings on the outside of the battery pack into place in the grooves. The O-rings compress the side of the battery pack and hold the cells tightly in place in the pack.

7. Reinstall the battery pack cover plate:

A. Align the pin on the battery pack cover plate PCB with the post hole in the battery pack housing.

B. Place the handle in an upright position. Screw the yellow cover plate onto the battery pack assembly. Ensure the cover is tightly screwed on to provide a reliable electrical contact.

Align pin in cover plate with post hole in battery pack

8. Replace the battery pack assembly in the housing:

A. Align the D-shaped opening in the cover plate with the pins on the shaft. Lower the assembly slowly into the housing, and once aligned, push gently to mate the banana plugs on the battery compartment bulkhead with the lower PCB. A post at the bottom of the battery compartment mates with a hole in the battery pack’s lower PCB to prevent improper alignment.

B. Secure the assembly to the shaft with the captured screw, using the

7/64-inch Allen wrench. Ensure the screw is tight to provide a reliable electrical contact.

9. Reinstall the I/O connector end cap:

A. Remove any water from the O-rings and mating surfaces in the housing with a lint-free cloth or tissue. Inspect the O-rings and mating surfaces for dirt, nicks, and cuts. Clean as necessary. Apply a light coat of O-ring lubricant (Parker Super O Lube) to the O-rings and mating surfaces.

B. Plug the female end of the Molex connector onto the pins.

C. Carefully fit the end cap into the housing until the O-rings are fully seated.

D. Reinstall the 2 cap screws to secure the end cap.

21


Software Installation

Notes:

• Help files provide detailed information on the software. A separate software manual on the CD-ROM contains detailed information on

SBE Data Processing.

• It is possible to use the MicroCAT without the SeatermV2 terminal program by sending direct commands from a dumb terminal or terminal emulator, such as Windows

HyperTerminal.

• Sea-Bird supplies the current version of our software when you purchase an instrument. As software revisions occur, we post the revised software on our website. See our website for the latest software version number, a description of the software changes, and instructions for downloading the software.

Seasoft V2 was designed to work with a PC running Windows XP service pack 2 or later, Windows Vista, or Windows 7 (32-bit or 64-bit).

If not already installed, install Sea-Bird software programs on your computer using the supplied software CD:

1. Insert the CD in your CD drive.

2. Install software: Double click on SeasoftV2.exe. Follow the dialog box directions to install the software. The installation program allows you to install the desired components. Install all the components, or just install

Deployment Endurance Calculator (battery endurance calculator),

SeatermV2 (terminal program launcher for the MicroCAT) and

SBE Data Processing (data processing).

The default location for the software is c:\Program Files\Sea-Bird. Within that folder is a sub-directory for each program.

Power and Communications Test

The power and communications test will verify that the system works, prior to deployment.

Test Setup

I/O cable

Locking sleeve

1. Remove dummy plug (if applicable):

A. By hand, unscrew the locking sleeve from the MicroCAT’s bulkhead connector. If you must use a wrench or pliers, be careful not to loosen the bulkhead connector instead of the locking sleeve.

B. Remove the dummy plug from the MicroCAT’s I/O bulkhead connector by pulling the plug firmly away from the connector.

2. XSG Connector - Install the I/O cable connector, aligning the raised bump on the side of the connector with the large pin (pin 1 - ground) on the MicroCAT. OR

MCBH Connector – Install the I/O cable connector, aligning the pins.

3. Connect the I/O cable connector to your computer’s serial port.

22

Manual revision 007

Note:

See SeatermV2’s Help files.

Section 3: Preparing MicroCAT for Deployment SBE 37-SMP-ODO RS-232

Test

1. Double click on SeatermV2.exe. The main screen looks like this:

Note:

See Seaterm232’s Help files.

SeatermV2 is a launcher, and launches the appropriate terminal program for the selected instrument.

2. In the Instruments menu, select SBE 37 RS232.

Seaterm232 opens; the main screen looks like this:

Menus

Send Commands

Window

Command/Data Echo Area

Status Bar

Status –

Ready,

Uploading,

Finished

Upload, etc.

Progress bar for uploading data

If uploading

- upload file name.

If sending XML script

– script file name

Capture status

• Menus – For tasks and frequently executed instrument commands.

• Send Commands window – Contains commands applicable to your

MicroCAT. The list appears after you connect to the MicroCAT.

• Command/Data Echo Area – Title bar of this window shows

Seaterm232’s current comm port and baud rate. Commands and the

MicroCAT responses are echoed here. Additionally, a command can be manually typed or pasted (ctrl + V) here. Note that the MicroCAT must be connected and awake for it to respond to a command.

• Status bar – Provides connection, upload, script, and capture status information.

23

Manual revision 007

Note:

Set local time and Set

UTC time are disabled if the baud rate in

Seaterm232 is set to

115200, because the software cannot reliably set the time at that baud.


Following is a description of the menus:

Menu Description

• Load command file – opens selected .XML command file, and fills Send Commands window with commands.

File

Communications

• Unload command file – closes command file, and removes commands from Send

Commands window.

• Exit - Exit program.

• Configure – Establish communication parameters (comm port and baud rate).

• Connect – connect to comm port.

• Disconnect – disconnect from comm port.

• Disconnect and reconnect – may be useful if instrument has stopped responding.

•

Abort – interrupt and stop MicroCAT’s response.

• Send 5 second break (not applicable to

37-SMP-ODO).

• Send stop command.

Command

Capture

Upload

• Set local time– Set date and time to time sent by timekeeping software on your computer; accuracy ± 25 msec of time provided by computer.

• Set UTC Time (Greenwich Mean Time) –

Set date and time to time sent by timekeeping software on your computer; accuracy ± 25 msec of time provided by computer.

Capture instrument responses on screen to file, to save real-time data or use for diagnostics. File has .cap extension. Click

Capture menu again to turn off capture.

Capture status displays in Status bar.

Upload data stored in memory, in a format that Sea-Bird’s data processing software can use. Uploaded data has .xml extension, and is then automatically converted to a .hex and a .xmlcon file that can be used in SBE Data

Processing’s Data Conversion module.

Before using Upload: stop logging by sending Stop.

•

•

•

•

Equivalent Command*

(press Esc key several times for Abort)

Stop

-

-

DateTime=

DateTime=

—

Several status commands and appropriate data upload command as applicable to user selection of range of data to upload (use Upload menu if you will be processing data with

SBE Data Processing)

Tools

• Diagnostics log - Keep a diagnostics log.

• Convert .XML data file – Using Upload menu automatically does this conversion; tool is available if there was a problem with the automatic conversion.

• Send script – Send XML script to

MicroCAT. May be useful if you have a number of MicroCATs to program with

-

same setup.

*See Command Descriptions in Section 4: Deploying and Operating MicroCAT.

24


3. If this is the first time Seaterm232 is being used, the configuration dialog box displays:

Computer COM port and baud rate for communication between computer and

MicroCAT. Seaterm232 tries to connect at this baud rate, but if unsuccessful will cycle through all available baud rates.

Note:

Seaterm232’s baud rate must be the same as the MicroCAT baud rate (set with BaudRate=). Baud is factory-set to 9600, but can be changed by the user (see Command Descriptions in

Section 4: Deploying and Operating

MicroCAT). Other communication parameters – 8 data bits, 1 stop bit, and no parity – cannot be changed.

Note:

If OutputExecutedTag=Y, the

MicroCAT does not provide an S> prompt after the

<Executed/> tag at the end of a command response.

Update COM Port pulldown to include connected USB ports.

Make the desired selections, and click OK.

4. Seaterm232 tries to automatically connect to the MicroCAT. As it connects, it sends GetHD and displays the response, which provides factory-set data such as instrument type, serial number, and firmware version. Seaterm232 also fills the Send Commands window with the correct list of commands for your MicroCAT.

If there is no communication:

A. In the Communications menu, select Configure. The Serial Port

Configuration dialog box appears. Select the Comm port and baud rate for communication, and click OK. Note that the factory-set baud rate is documented on the Configuration Sheet.

B. In the Communications menu, select Connect (if Connect is grayed out, select Disconnect and reconnect). Seaterm232 will attempt to connect at the baud specified in Step A, but if unsuccessful will then cycle through all other available baud rates.

C. If there is still no communication, check cabling between the computer and MicroCAT, and try to connect again.

D. If there is still no communication, repeat Step A with a different comm port, and try to connect again.

After Seaterm232 displays the GetHD response, it provides an S> prompt to indicate it is ready for the next command.

25

Manual revision 007 Section 3: Preparing MicroCAT for Deployment

Taking a look at the Send Commands window:


Click on desired command description in list.

Help box describes selected command in more detail.

Enter any command arguments (such as starting and ending sample number for upload) in these boxes.

Click Execute when ready to send selected command.

This box shows selected command.

You can use the Send Commands window to send commands, or simply type the commands in the Command/Data Echo area if desired.

26

Manual revision 007

Note:

The MicroCAT automatically enters quiescent (sleep) state after 2 minutes without receiving a command. This timeout algorithm is designed to conserve battery pack energy if the user does not send QS to put the MicroCAT to sleep. If the system does not appear to respond, select Connect in the Communications menu to reestablish communications.


5. Display MicroCAT status information typing DS and pressing the

Enter key. The display looks like this:

SBE37SMP-ODO-RS232 v2.4.2 SERIAL NO. 10519 11 Oct 2013 09:56:59 vMain = 13.02, vLith = 3.20 samplenumber = 0, free = 399457 not logging, stop command sample interval = 600 seconds data format = converted engineering output temperature, Celsius output conductivity, S/m output pressure, Decibar output oxygen, ml/L output salinity, PSU output sound velocity, m/s output specific conductivity, S/m specific conductivity coefficient = 0.0200 output sample number transmit real time data = no sync mode = no minimum conductivity frequency = 3225.4 adaptive pump control enabled nTau = 7.0

6. Command the MicroCAT to take a sample by typing TS and pressing the

Enter key. The display looks like this if optional pressure sensor installed, all output parameters are enabled, and OutputFormat=1 (converted engineering units):

23.2444, -0.00001, -0.310, 5.956, 0.0000, 1491.887, -

0.00001, 11 Oct 2013, 09:58:11

where

• 23.2444= temperature in degrees Celsius (output if OutputTemp=Y, units set by SetTempUnits=)

• -0.00001= conductivity in S/m (output if OutputCond=Y, units set by SetCondUnits=)

• -0.310 = pressure in decibars (output if OutputPress=Y, units set by

SetPressUnits=)

• 5.956 = dissolved oxygen in ml/L (output if OutputOx=Y, units set by SetOxUnits=)

• 0.0000 = salinity (psu) (output if OutputSal=Y)

• 1491.887 = sound velocity (m/sec) (output if OutputSV=Y)

• 0.00001 = specific conductivity (S/m) (output if OutputSC=y)

• 11 Oct 2013 = date

• 09:58:11 = time

These numbers should be reasonable; i.e., room temperature, zero conductivity, barometric pressure (gauge pressure), current date and time

(shipped from the factory set to Pacific Daylight or Standard Time).

7. Command the MicroCAT to go to sleep (quiescent state) by typing QS

The MicroCAT is ready for programming and deployment. and pressing the Enter key.

27

Manual revision 007 Section 4: Deploying and Operating MicroCAT SBE 37-SMP-ODO RS-232

Section 4:

Deploying and Operating MicroCAT

This section includes:

• system operation with example sets of operation commands

• baud rate and cable length considerations

• timeout description

• detailed command descriptions

• data output formats

• optimizing data quality / deployment orientation

• deploying and recovering the MicroCAT

• uploading and processing data from the MicroCAT’s memory

Sampling Modes

Note:

The pump runs only if the conductivity frequency from the last sample was greater than the minimum conductivity frequency for running the pump

( MinCondFreq=). Checking the conductivity frequency prevents the pump from running in air for long periods of time, which could damage the pump. See Command Descriptions for details on setting the minimum conductivity frequency.

The MicroCAT has three basic sampling modes for obtaining data:

• Polled Sampling – On command, the MicroCAT runs the pump, takes one sample, and transmits data.

• Autonomous Sampling – At pre-programmed intervals, the MicroCAT wakes up, runs the pump, samples, stores data in memory, and goes to sleep. Data is transmitted real-time if TxRealTime=Y.

• Serial Line Synchronization – In response to a pulse on the serial line, the

MicroCAT wakes up, runs the pump, samples, stores data in memory, and goes to sleep. Data is transmitted real-time if TxRealTime=Y.

Commands can be used in various combinations to provide a high degree of operating flexibility.

The integral pump runs before every sample measurement. The pump flushes the previously sampled water from the conductivity cell and oxygen plenum and brings a new water sample quickly into the system. Water does not freely flow through the plumbing between samples, minimizing fouling. See Pump

Operation in Section 2: Description of MicroCAT for details.

Descriptions and examples of the sampling modes follow. Note that the

MicroCAT’s response to each command is not shown in the examples. Review the operation of the basic sampling modes and the commands described in

Command Descriptions before setting up your system.

28


Polled Sampling

On command, the MicroCAT takes a measurement and sends the data to the computer. Storing of data in the MicroCAT’s FLASH memory is dependent on the particular command used.

For polled sampling commands that run the pump (TPS, TPSH, etc.), the MicroCAT checks if the conductivity frequency from the last sample was greater than MinCondFreq= before running the pump. Pumping time is dependent on the setting for AdaptivePumpControl=, and on the temperature and pressure of the previous sample, as described in Pump Operation in

Section 2: Description of MicroCAT.

Example: Polled Sampling (user input in bold)

Wake up MicroCAT. Set current date and time to December 1, 2013 9 am. Set up to send data in converted decimal format, and include temperature, conductivity, pressure, oxygen, and salinity with data. Command MicroCAT to run pump and take a sample, and send data to computer (do not store data in MicroCAT’s memory). Send power-off command.

(Select Connect in Seaterm232’s Communications menu to connect and wake up.)

DATETIME=12012013090000

OUTPUTFORMAT=1

OUTPUTTEMP=Y

OUTPUTCOND=Y

OUTPUTPRESS=Y

OUTPUTOX=Y

OUTPUTSAL=Y

GETCD (to verify setup)

TPS (Pump runs before measurement if conductivity frequency from previous sample > MinCondFreq)

QS

When ready to take a sample (repeat as desired): wake up MicroCAT, command it to take a sample and output data, and send power-off command.

(Before first sample, click Capture menu to capture data to a file – Seaterm232 requests file name for data to be stored.)


TPS (Pump runs before measurement if conductivity frequency from previous sample > MinCondFreq)

QS

29

Manual revision 007

Notes:

• If the FLASH memory is filled to capacity, sampling continues, but excess data is not saved in memory

(i.e., the MicroCAT does not overwrite the data in memory).

• Use

Stop to:



stop logging.



stop waiting to start logging (after

StartLater has been sent).

Once Stop is sent, the MicroCAT will accept all commands again.

Section 4: Deploying and Operating MicroCAT SBE 37-SMP-ODO RS-232

Autonomous Sampling (Logging commands)

At pre-programmed intervals (SampleInterval=) the MicroCAT wakes up, runs the pump (if the conductivity frequency from the last sample was greater than MinCondFreq=), samples data, stores the data in its FLASH memory, and goes to sleep (enters quiescent state). Logging is started with StartNow or

StartLater, and is stopped with Stop. Transmission of real-time data to the computer is dependent on TxRealTime. Pumping time is dependent on the setting for AdaptivePumpControl=, and on the temperature and pressure of the previous sample, as described in Pump Operation in Section 2: Description

of MicroCAT.

The MicroCAT has a lockout feature to prevent unintended interference with sampling. If the MicroCAT is logging or is waiting to start logging

(StartLater has been sent, but logging has not started yet), the MicroCAT will only accept the following commands: GetCD, GetSD, GetCC, GetEC,

GetHD, DS, DC, TS, TSR, TPS, TPSH, SL, SLTP, QS, and Stop.

Additionally, if the MicroCAT is logging, it cannot be interrupted during a

measurement to accept any commands. If the MicroCAT is logging and appears unresponsive, it may be in the middle of taking a measurement; continue to try to establish communications.

If transmitting real-time data, keep the signal line open circuit or within

± 0.3 V relative to ground to minimize power consumption when not

trying to send commands.

Example: Autonomous Sampling (user input in bold).

Wake up MicroCAT. Initialize logging to overwrite previous data in memory. Set current date and time to May 1, 2013

9 am. Set up to sample every 300 seconds. Do not transmit real-time data to computer. Set up to automatically start logging on 10 May 2013 at 12:00:00. Send power-off command after all parameters are entered – system will automatically wake up and go to sleep for each sample.


INITLOGGING

DATETIME=05012013090000

SAMPLEINTERVAL=300

TXREALTIME=N

STARTDATETIME=05102013120000

STARTLATER


GETSD (to verify status is waiting to start logging)

QS

After logging begins, look at data from last sample to check results, and then go to sleep:


SL

QS

When ready to upload all data to computer, wake up MicroCAT, stop sampling, upload data, and then go to sleep:


STOP

(Click Upload menu – Seaterm232 leads you through screens to define data to be uploaded and where to store it.)

QS

30


Serial Line Synchronization (Serial Line Sync)

Note:

Use GetCD or DS to view Serial

Line Sync enable/disable status.

Serial Line Sync allows a simple pulse (a single character) on the RS-232 line to initiate a sample. This mode provides easy integration with ADCPs or current meters, which can synchronize MicroCAT sampling with their own without drawing on their battery or memory resources.

Serial line sync mode is enabled by sending SyncMode=Y and then putting the MicroCAT in sleep state (automatically in 2 minutes or by sending QS).

Once in sync mode, sending a pulse causes the MicroCAT to wake up, run the pump (if the conductivity frequency from the last sample was greater than

MinCondFreq=), take a sample, and store the data in FLASH memory.

Transmission of real-time data is dependent on TxRealTime. Pumping time is dependent on the setting for AdaptivePumpControl= and on the temperature and pressure of the previous sample, as described in Pump Operation in

Section 2: Description of MicroCAT.

Keep the signal line open circuit or within ± 0.3 V relative to ground to minimize power consumption when not trying to send a pulse to take

a sample.

To disable serial line sync, the MicroCAT must be in the space state when the sample is finished. Disable sync mode by sending 3 Esc characters; this sets sync mode to no (it may take up to a minute to come out of sync mode). Then press any key to wake up the MicroCAT. Once sync mode is disabled

(SyncMode=N), you can communicate with the MicroCAT using the full range of commands (polled sampling, logging, upload, etc.).

Example: Serial Line Sync (user input in bold)

Wake up MicroCAT. Initialize logging to overwrite previous data in memory. Set current date and time to May 1, 2013

9 am. Set up to transmit real-time data. Set up to send data in converted decimal format, and include temperature, conductivity, pressure, oxygen, and salinity with data. Enable serial line sync mode. Send power off command.


INITLOGGING

DATETIME=05012013090000

OUTPUTFORMAT=1

OUTPUTTEMP=Y

OUTPUTCOND=Y

OUTPUTPRESS=Y

OUTPUTOX=Y

OUTPUTSAL=Y

TXREALTIME=Y

SYNCMODE=Y


QS (MicroCAT responds with message confirming that it is now in serial line sync mode)

When ready to take a sample:

(To save real-time data, click Capture menu to capture data to a file – Seaterm232 requests file name for data to be stored.)

Send a pulse – press any key – to wake up, run pump, take and transmit 1 sample, store in memory, and go to sleep.

Repeat as desired.

When ready to upload all data to computer, disable serial line sync mode, and then upload data and go to sleep:

(Press Esc key 3 or more times; MicroCAT disables sync mode [sets SyncMode=N]. Press any key to wake up

MicroCAT.)

GETCD (to verify MicroCAT is communicating, and that sync mode is set to no)

(Click Upload menu – Seaterm232 leads you through screens to define data to be uploaded and where to store it.)

QS

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Manual revision 007

Real-Time Data Acquisition

Notes:

• Baud rate is set with BaudRate=.

Set

TxRealTime=Y

to output real-time data.

See Command

Descriptions.

• If using external power, see

External Power in Section 2:

Description of MicroCAT for power limitations on cable length.


The length of cable that the MicroCAT can drive is dependent on the baud rate. Check the capability of your computer and terminal program before increasing the baud; high baud requires a short cable and good PC serial port with an accurate clock. The allowable combinations are:

Maximum Cable Length (meters) Maximum Baud Rate

200 4800

9600 100

50

25

16

8

19200

38400

57600

115200

If acquiring real-time data with Seaterm232, click the Capture menu; enter the desired file name in the dialog box, and click Save. Begin sampling. The data displayed in Seaterm232 will be saved to the designated file. Process the data as desired. Note that this file cannot be processed by SBE Data Processing,

as it does not have the required headers and format for Sea-Bird’s

processing software. To process data with SBE Data Processing, upload the data from the MicroCAT’s memory

Timeout Description

The MicroCAT has a timeout algorithm. If the MicroCAT does not receive a command for 2 minutes, it powers down its communication circuits to prevent exhaustion of the battery pack. This places the MicroCAT in quiescent state, drawing minimal current. To re-establish control (wake up), select Connect

in Seaterm232’s Communications menu or press the Enter key.

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Command Descriptions


This section describes commands and provides sample outputs. Entries made with the commands are permanently stored in the MicroCAT and remain in effect until you change them. See Appendix III: Command Summary for a summarized command list.

When entering commands:

• Input commands to the MicroCAT in upper or lower case letters and register commands by pressing the Enter key. Note that commands are shown with a mix of upper and lower case for ease in reading (for example, MinCondFreq=), but do not need to be entered that way.

• The MicroCAT sends an error message if an invalid command is entered.

• Commands to enable a parameter (such as enabling adaptive pump control) can be entered with the argument as Y or 1 for yes, and N or 0 for no (for example, AdaptivePumpControl=y and

AdaptivePumpControl=1 are equivalent; both enable adaptive pump control).

• If a new command is not received within 2 minutes after the completion of a command, the MicroCAT returns to the quiescent (sleep) state.

• If in quiescent (sleep) state, re-establish communications by selecting

Connect in Seaterm232’s Communications menu or pressing the

Enter key.

• If the MicroCAT is transmitting data and you want to stop it, press the

Esc key or type ^C. Then press the Enter key. Alternatively, select Abort in Seaterm232’s Command menu.

• The MicroCAT responds only to GetCD, GetSD, GetCC, GetEC,

GetHD, DS, DC, TS, TSR, TPS, TPSH, SL, SLTP, QS, and Stop while sampling autonomously (StartNow has been sent). If you wake the

MicroCAT while it is pumping or sampling (for example, to send DS to check on progress): o (if OutputExecutedTag=Y) The MicroCAT responds with one or more <Executing> tags until the sample is complete, and then responds to the command. o (if OutputExecutedTag=N) The MicroCAT responds to the command after the sample is complete.

• The MicroCAT responds only to GetCD, GetSD, GetCC, GetEC,

GetHD, DS, DC, TS, TSR, TPS, TPSH, SL, SLTP, QS, and Stop while waiting to start autonomous sampling (StartLater has been sent). To send any other commands, send Stop, send the desired commands to modify the setup, and then send StartLater again.

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Manual revision 007

Notes:

•

GetCD output does not include calibration coefficients. To display calibration coefficients, use the

GetCC command.

• Lines describing what parameters to output (temperature, conductivity, pressure, oxygen, salinity, sound velocity, specific conductivity, sample number) only appear if OutputFormat=1 or 2.

Raw output ( OutputFormat=0) is not affected by enabling / disabling parameter outputs.

Section 4: Deploying and Operating MicroCAT

Status Commands

GetCD


Get and display configuration data, which includes parameters related to MicroCAT setup. Most of these parameters can be userinput/modified. List below includes, where applicable, command used to modify parameter:

•

Device type, Serial number

• Optional pressure sensor installed?

• Reference pressure (dbar) to use in calculations if no pressure sensor installed

(only sent if pressure sensor not installed)

[ReferencePressure=]

• Output data format [OutputFormat=]

• Units for: temperature [SetTempUnits=], conductivity and specific conductivity

[SetCondUnits=], pressure [SetPressUnits=], oxygen [SetOxUnits=]

• Output with each sample: temperature [OutputTemp=]? conductivity [OutputCond=]? pressure [OutputPress=]? oxygen [OutputOx=]? salinity [OutputSal=]? sound velocity [OutputSV=]? specific conductivity [OutputSC=]?

•

Specific conductivity temperature coefficient [UseSCDefault= and

SetSCA=]

• Output sample number with real-time autonomous data and polled data from memory [TxSampleNum=]?

• Interval between samples for autonomous sampling [SampleInterval=]

• Transmit autonomous and serial line sync data real-time [TxRealTime=]?

• Serial sync mode state [SyncMode=]

• Minimum conductivity frequency for pump turn-on [MinCondFreq=]

• Adaptive pump control enabled

[AdaptivePumpControl=]?

• Pump time multiplier [OxNTau=].

• Pump-on time for each measurement

[OxNTau * OxTau20] if Adaptive Pump

Control disabled. Only sent if Adaptive

Pump Control disabled.

34


Example: MicroCAT with a pressure sensor (user input in bold, command used to modify parameter in parentheses).

GETCD

<ConfigurationData DeviceType = 'SBE37SMP-ODO-RS232' SerialNumber = '03710103'>

<PressureInstalled>yes</PressureInstalled>

(inclusion of optional pressure sensor set at factory)

<SampleDataFormat>converted engineering</SampleDataFormat>

<TemperatureUnits>Celsius</TemperatureUnits>

<ConductivityUnits>S/m</ConductivityUnits>

<PressureUnits>Decibar</PressureUnits>

<OxygenUnits>ml/L</OxygenUnits>

<OutputTemperature>yes</OutputTemperature>

<OutputConductivity>yes</OutputConductivity>

<OutputPressure>yes</OutputPressure>

<OutputOxygen>yes</OutputOxygen>

<OutputSalinity>yes</OutputSalinity>

<OutputSV>yes</OutputSV>

<OutputSC>yes</OutputSC>

<SCCoeff>0.0200</SCCoeff>

<TxSampleNumber>yes</TxSampleNumber>

<SampleInterval>300</SampleInterval>

<TxRealTime>yes</SampleInterval>

<SyncMode>no</SyncMode>

<MinCondFreq>3224.1</MinCondFreq>

<AdaptivePumpControl>yes</AdaptivePumpControl>

<nTau>7.0</nTau>

</ConfigurationData>

[OutputFormat=]

[SetTempUnits=]

[SetCondUnits=]

[SetPressUnits=]

[SetOxUnits=]

[OutputTemp=]

[OutputCond=]

[OutputPress=]

[OutputOx=]

[OutputSal=]

[OutputSV=]

[OutputSC=]

[UseSCDefault= and SetSCA=]

[TxSampleNum=]

[SampleInterval=]

[TxRealTime=]

[SyncMode=]

[MinCondFreq=]

[AdaptivePumpControl=]

[OxNTau=]

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Manual revision 007 Section 4: Deploying and Operating MicroCAT

Status Commands (continued)

GetSD


Get and display status data, which contains data that changes while deployed.

List below includes, where applicable, command used to modify parameter:

• Device type, Serial number

• Date and time [DateTime=] in

ISO8601-2000 extended format

(yyyy – mm-ddThh:mm:ss)

• Number of recorded events in event counter [reset with ResetEC]

• Voltages – main battery pack voltage and back-up lithium cell voltage

• Memory – [reset with InitLogging]

- Number of bytes in memory

- Number of samples in memory

- Number of additional samples that can be placed in memory

- Length (number of bytes) of each sample

• Logging status – yes or no (to indicate whether it is currently logging data); if applicable, reason that logging has stopped

Example: (user input in bold, command used to modify parameter in parentheses)

getsd

<StatusData DeviceType = 'SBE37SMP-ODO-RS232' SerialNumber = ' 03712345'>

<DateTime>2013-05-15T00:48:32</DateTime>

<EventSummary numEvents = '0'/>

<Power>

<vMain> 13.32</vMain>

<vLith> 3.19</vLith>

</Power>

<MemorySummary>

<Bytes>5166</Bytes>

<Samples>246</Samples>

<SamplesFree>399211</SamplesFree>

<SampleLength>21</SampleLength>

</MemorySummary>

<AutonomousSampling>no, stop command</AutonomousSampling>

</StatusData>

[DateTime=]

[can clear with ResetEC=]

[can clear with InitLogging]

[can clear with InitLogging]

[StartNow or StartLater, Stop]

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Note:

Dates shown are when calibrations were performed.



GetCC


Get and display calibration coefficients, which are initially factory-set and should agree with Calibration Certificates shipped with MicroCAT.

Example: MicroCAT with a pressure sensor (user input in bold, command used to modify parameter in parentheses)

getcc

<CalibrationCoefficients DeviceType = 'SBE37SMP-ODO-RS232' SerialNumber = '03712345'>

<Calibration format = 'TEMP1' id = 'Temperature'>

<SerialNum>03712345</SerialNum>

<CalDate>04-Feb-13</CalDate>

<A0>6.947802e-05</A0>

<A1>2.615233e-04</A1>

<A2>-1.265233e-06</A2>

<A3>1.310479e-07</A3>

</Calibration>

<Calibration format = 'WBCOND0' id = 'Conductivity'>



<G>-1.009121e+00</G>

<H>1.410162e-01</H>

<I>-2.093167e-04</I>

<J>3.637053e-05</J>

<PCOR>-9.570000e-08</PCOR>

<TCOR>3.250000e-06</TCOR>

<WBOTC>1.954800e-05</WBOTC>

</Calibration>

<Calibration format = 'STRAIN0' id = 'Pressure'>



<PA0>1.729067e+00</PA0>

<PA1>1.415754e-01</PA1>

<PA2>1.246912e-08</PA2>

<PTCA0>2.243971e+00</PTCA0>

<PTCA1>1.055267e+00</PTCA1>

<PTCA2>-2.276308e-02</PTCA2>

<PTCB0>1.003849e+02</PTCB0>

<PTCB1>1.014510e-02</PTCB1>

<PTCB2>-2.057110e-04</PTCB2>

<PTEMPA0>5.669780e+01</PTEMPA0>

<PTEMPA1>-5.474043e-02</PTEMPA1>

<PTEMPA2>1.267908e-05</PTEMPA2>

<POFFSET>0.000000e+00</POFFSET>

<PRANGE>0.000000e+00</PRANGE>

</Calibration>

<Calibration format = 'OXYGEN1' id = 'Oxygen'>



<TAU20>4.000000e+00</TAU20>

<NTAU>7.000000e+00</NTAU>

<OXA0>1.051300e+00</OXA0>

<OXA1>-1.500000e-03</OXA1>

<OXA2>4.161926e-01</OXA2>

<OXB0>-2.325492e-01</OXB0>

<OXB1>1.692931e+00</OXB1>

<OXC0>8.966704e-02</OXC0>

<OXC1>3.617471e-03</OXC1>

<OXC2>5.112384e-05</OXC2>

<OXTA0>6.517293e-04</OXTA0>

<OXTA1>2.533749e-04</OXTA1>

<OXTA2>3.140482e-07</OXTA2>

<OXTA3>1.064506e-07</OXTA3>

<OXE>1.100000e-02</OXE>

</Calibration>

</CalibrationCoefficients>

[TCalDate=]

[TA0=]

[TA1=]

[TA2=]

[TA3=]

[CCalDate=]

[CG=]

[CH=]

[CI=]

[CJ=]

[CTCor=]

[CPCor=]

[CWBOTC=]

[PCalDate=]

[PA0=]

[PA1=]

[PA2=]

[PTCA0=]

[PTCA1=]

[PTCA2=]

[PTCB0=]

[PTCB1=]

[PTCB2=]

[PTempA0=]

[PTempA1=]

[PTempA2=]

[POffset= (decibars)]

[PRange= (psi)]

[OxCalDate=]

[OxTau20=]

[OxNTau=]

[OxA0=]

[OxA1=]

[OxA2=]

[OxB0=]

[OxB1=]

[OxC0=]

[OxC1=]

[OxC2=]

[OxTA0=]

[OxTA1=]

[OxTA2=]

[OxTA3=]

[OxE=]

37


ResetEC



GetEC

Get and display event counter data, which can help to identify root cause of a malfunction. Event counter records number of occurrences of common timeouts, power-on resets, etc. Can be cleared with ResetEC. Possible events that may be logged include:

• WDT reset – unexpected reset

• PON reset - power cycled on (each time power is applied)

• ErrorADC12TimeOut – response delayed from A/D converter that measures main power and back-up lithium cell power

• ErrorUART0TimeOut – timeout for transmitter to finish transmitting previous character via RS-232

• ErrorAD7714TimeOut – response delayed from temperature and pressure A/D converter

• ErrorInvWakeUpFlag – unexpected wakeup

• ErrorFLASHTimeOut – problem with writing data to FLASH memory

• Alarm long - time to take next sample is too far in future

• Alarm short - woke up MicroCAT to send a command while logging, and missed taking a sample

• LoggingRestartNoAlarm – no sample taken for 8 hours while logging, restart logging

• LoggingRestartPON – power cycled while logging, logging restarted

• ErrorSBE63Timeout – SBE 63 not responding within 1.5 sec of when power applied by MicroCAT


getec

<EventCounters DeviceType = 'SBE37SMP-ODO-RS232' SerialNumber = '03712345'>

<EventSummary numEvents = '1'/>

<Event type = 'PON reset' count = '1'/>

</EventCounters>

[can clear with ResetEC]

[can clear with ResetEC]

Delete all events in event counter (number of events displays in GetSD response, and event details display in GetEC response).

38



GetHD


Get and display hardware data, which is fixed data describing MicroCAT:

• Device type, Serial number

• Manufacturer

• Firmware version

• Firmware date

• PCB serial numbers and assembly numbers

• Manufacture date

•

Sensor types and serial numbers


gethd

<HardwareData DeviceType = 'SBE37SMP-ODO-RS232' SerialNumber = '03712345'>

<Manufacturer>Sea-Bird Electronics, Inc.</Manufacturer>

<FirmwareVersion>2.4.2</FirmwareVersion>

<FirmwareDate>30 Sep 2013 15:59:47</FirmwareDate>

<CommandSetVersion>1.1</CommandSetVersion>

<PCBAssembly SerialNum='54948' AssemblyNum='41783B'/>

<PCBAssembly SerialNum='54787' AssemblyNum='41785A'/>

<PCBAssembly SerialNum='55497' AssemblyNum='41661B'/>

<PCBAssembly SerialNum='50410' AssemblyNum='41787A'/>

<MfgDate>30 Sep 2013</MfgDate>

<FirmwareLoader> SBE 37-232-V3 FirmwareLoader V 1.0</FirmwareLoader>

<InternalSensors>

<Sensor id = 'Temperature'>

<type>temperature-1</type>

<SerialNumber>03712345</SerialNumber>

</Sensor>

<Sensor id = 'Conductivity'>

<type>conductivity-1</type>


</Sensor>

<Sensor id = 'Pressure'>

<type>strain-0</type>


</Sensor>

<Sensor id = 'Oxygen'>

<type>oxygen-1</type>


</Sensor>

</InternalSensors>

</HardwareData>

Help

Display list of currently available commands, which may be useful if you do not have access to the MicroCAT manual and/or are not using SeatermV2.

Command list depends on logging state.

Many commands are not available while

MicroCAT is sampling autonomously or waiting to start autonomous sampling

(StartLater has been sent).

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Manual revision 007

Notes:

• The DS response contains similar information as the combined responses from GetSD and

GetCD, but in a different format.

• Lines describing what parameters to output (temperature, conductivity, pressure, oxygen, salinity, sound velocity, specific conductivity, sample number) only appear if they are enabled, and if

OutputFormat=1 or 2. Raw output

( OutputFormat=0) is not affected by enabling / disabling parameter outputs.

• The DS response is also affected by the Legacy= command. See the

Output Format Setup commands below.



DS

Display operating status and setup.

List below includes, where applicable, command used to modify parameter.

• Firmware version, serial number, date and time [DateTime=].

• Main battery pack voltage and back-up lithium cell voltage.

• Number of samples in memory

[SampleNumber=] and available sample space in memory.

• Logging status (logging not started, logging data, not logging, or unknown).

• Interval between samples for autonomous sampling [SampleInterval=].

• Output temperature [OutputTemp=]?

Temperature units [SetTempUnits=]

• Output conductivity [OutputCond=]?

Conductivity and specific conductivity units [SetCondUnits=]

• Output pressure [OutputPress=]?

Pressure units [SetPressUnits=]

• Output oxygen [OutputOx=]?

Oxygen units [SetOxUnits=]

• Output salinity [OutputSal=]?

Factory-set salinity units (psu)

• Output sound velocity [OutputSV=]?

Factory-set sound velocity units (m/s)

• Output specific conductivity

[OutputSC=]?

Conductivity and specific conductivity units [SetCondUnits=]

• Specific conductivity temperature coefficient [UseSCDefault= and

SetSCA=]

• Transmit sample number with real-time autonomous data and polled data from memory [TxSampleNum=]?

• Transmit autonomous and serial line sync data real-time [TxRealTime=]?

• Serial sync mode state [SyncMode=].

• Reference pressure to use in calculations if no pressure sensor installed (only sent if pressure sensor not installed)

[ReferencePressure=].

• Minimum conductivity frequency for pump turn-on [MinCondFreq=].

• Adaptive pump control enabled

[AdaptivePumpControl=]?

If not enabled, pump-on time for each measurement displays

[OxNTau * OxTau20].

• Pump time multiplier [OxNTau=]

40


Example: MicroCAT with a pressure sensor (user input in bold, command used to modify parameter in parentheses).

DS

SBE37SMP-ODO-RS232 V 2.4.2 SERIAL NO. 12345 11 Oct 2013 10:55:45 vMain = 13.31, vLith = 3.19 samplenumber = 0, free = 399457 not logging, stop command sample interval = 300 seconds data format = converted engineering output temperature, Celsius output conductivity, S/m output pressure, Decibar output oxygen, ml/L output salinity, PSU output sound velocity, m/s output specific conductivity, S/m specific conductivity coefficient = 0.0200 output sample number transmit real time data = yes sync mode = no minimum conductivity frequency = 3000.00 adaptive pump control enabled nTau = 7.0

[DateTime=]

[SampleNumber=]

[SampleInterval=]

[OutputFormat=]

[OutputTemp=, SetTempUnits=]

[OutputCond=, SetCondUnits=]

[OutputPress=, SetPressUnits=]

[OutputOx=, SetOxUnits=]

[OutputSal=, factory-set units]

[OutputSV=, factory-set units]

[OutputSC=, SetCondUnits=]

[UseSCDefault= and SetSCA=]

[TxSampleNum=]

[TxRealTime=]

[SyncMode=]

[MinCondFreq=]

[AdaptivePumpControl=]

[OxNTau=]

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Manual revision 007

Notes:

• The

DC and GetCC responses contain the same information, but in different formats.

• Dates shown are when calibrations were performed.



DC

Display calibration coefficients, which are initially factory-set and should agree with

Calibration Certificates shipped with

MicroCAT.

Example: MicroCAT with a pressure sensor (user input in bold, command used to modify parameter in parentheses

).

DC

SBE37SMP-ODO-RS232 V 2.4.2 12345 temperature: 04-may-13

TA0 = 6.947802e-05

TA1 = 2.615233e-04

TA2 = -1.265233e-06

TA3 = 1.310479e-07 conductivity: 04-may-13

G = -1.036689e+00

H = 1.444342e-01

I = -3.112137e-04

J = 3.005941e-05

CPCOR = -9.570001e-08

CTCOR = 3.250000e-06

WBOTC = 1.968100e-05 pressure S/N 2478619, range = 2901 psia, 03-may-13

PA0 = 0.000000e+00

PA1 = 0.000000e+00

PA2 = 0.000000e+00

PTCA0 = 0.000000e+00

PTCA1 = 0.000000e+00

PTCA2 = 0.000000e+00

PTCB0 = 0.000000e+00

PTCB1 = 0.000000e+00

PTCB2 = 0.000000e+00

PTEMPA0 = 0.000000e+00

PTEMPA1 = 0.000000e+00

PTEMPA2 = 0.000000e+00

POFFSET = 0.000000e+00 oxygen S/N 12, 13-may-13

TAU_20 = 4.000000e+00

OXA0 = 1.051300e+00

OXA1 = -1.500000e-03

OXA2 = 4.161926e-01

OXB0 = -2.325492e-01

OXB1 = 1.692931e+00

OXC0 = 8.966704e-02

OXC1 = 3.617471e-03

OXC2 = 5.112384e-05

OXTA0 = 6.517293e-04

OXTA1 = 2.533749e-04

OXTA2 = 3.140482e-07

OXTA3 = 1.064506e-07

OXE = 1.100000e-02

[TCalDate=]

[TA0=]

[TA1=]

[TA2=]

[TA3=]

[CCalDate=]

[CG=]

[CH=]

[CI=]

[CJ=]

[CPCor=]

[CTCor=]

[CWBOTC=]

[PRange= (psi), PCalDate=]

[PA0=]

[PA1=]

[PA2=]

[PTCA0=]

[PTCA1=]

[PTCA2=]

[PTCB0=]

[PTCB1=]

[PTCB2=]

[PTempA0=]

[PTempA1=]

[PTempA2=]

[POffset= (decibars)]

[OxCalDate=]

[OxTau20=]

[OxA0=]

[OxA1=]

[OxA2=]

[OxB0=]

[OxB1=]

[OxC0=]

[OxC1=]

[OxC2=]

[OxTA0=]

[OxTA1=]

[OxTA2=]

[OxTA3=]

[OxE=]

42


General Setup Commands


DateTime=mmddyyyyhhmmss Set real-time clock month, day, year, hour, minute, second.

Notes:

• The MicroCAT baud rate (set with

BaudRate=) must be the same as

Seaterm232’s baud rate (set in the

Communications menu).

• BaudRate= must be sent twice.

After the first entry, the MicroCAT changes to the new baud, and then waits for the command to be sent again at the new baud (In

Seaterm232’s Communications menu, select Configure. In the dialog box, select the new baud rate and click OK. Then retype the command.). This prevents you from accidentally changing to a baud that is not supported by your computer. If it does not receive the command again at the new baud, it reverts to the previous baud rate.

Notes:

• The MicroCAT always outputs realtime data for polled sampling.

• TxRealTime does not affect storing data to memory, but slightly increases current consumption and time needed to sample (and then transmit) data.

• To capture real-time data to a file, do the following before starting logging:

1. Click the Capture menu in

Seaterm232.

2. Enter the desired file name in the dialog box. The capture status displays in the status bar at the bottom of the screen.

Note:

The MicroCAT automatically enters quiescent state after 2 minutes without receiving a command. This timeout algorithm is designed to conserve battery pack energy if the user does not send QS to put the MicroCAT to sleep.

Example: Set current date and time to 10 September 2013 12:00:00 (user input in bold).

DATETIME=09102013120000

BaudRate=x

x= baud rate (4800, 9600, 19200, 38400,

57600, or 115200). Default 9600. Check capability of your computer and terminal program before increasing baud; high baud requires a short cable and good PC serial port with accurate clock. Command must be sent

twice to change rate.

Length of cable that MicroCAT can drive is dependent on baud. See Real-Time Data

Acquisition.

OutputExecutedTag=x

x=Y: Display XML Executing and Executed tags. Executed tag displays at end of each command response; Executing tag displays one or more times if MicroCAT response to command requires additional time.

x=N: Do not.

Example: Set MicroCAT to output Executed and Executing tags (user input in bold).

outputexecutedtag=y

<Executed/>getcd

. . . (GetCD response)

<Executed/>

(Note: <Executed/> tag at end of command response takes place of S> prompt.)

TxRealTime=x

x=Y: Output real-time data while sampling autonomously or in serial line sync mode. Data is transmitted immediately after it is sampled.

x=N: Do not output real-time data.

ReferencePressure=x

x = reference pressure (gauge) in decibars.

MicroCAT without installed pressure sensor uses this reference pressure in conductivity

(and optional salinity and sound velocity) calculation, in Adaptive Pump Control algorithm (if enabled), and in oxygen calculation. Entry ignored if MicroCAT includes pressure sensor.

QS Quit session and place MicroCAT in quiescent

(sleep) state. Main power is turned off. Data logging and memory retention are not affected.

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Manual revision 007

Note:

See Pump Operation in Section 2:

Description of MicroCAT for details.

Note:

OxTau20= is the SBE 63 ODO sensor response time. If Adaptive Pump

Control is turned off, the pump runs for a multiple [ OxNTau=] of the response time before each sample.

CAUTION:

The MicroCAT does not check

MinCondFreq when you send

PumpOn; do not run the pump dry.

The pump is water lubricated; running it without water will damage it. If briefly testing your system with PumpOn in dry conditions, orient the MicroCAT to provide an upright U-shape for the plumbing. Then fill the internal plumbing and inside of the pump head with water via the pump exhaust. This will provide enough lubrication to prevent pump damage during brief testing.


Pump Setup Commands


The MicroCAT’s integral pump is water lubricated; running it dry for an extended period of time will damage it. To prevent the pump from running dry while sampling, the MicroCAT checks the raw conductivity frequency (Hz) from the last sample against the user-input minimum conductivity frequency

(MinCondFreq=). If the raw conductivity frequency is greater than

MinCondFreq, it runs the pump before taking the sample; otherwise it does not run the pump.

If the minimum conductivity frequency is too close to the zero conductivity

frequency (from the MicroCAT Calibration Sheet), the pump may turn on when the MicroCAT is in air, as a result of small drifts in the electronics.

Some experimentation may be required to control the pump, particularly in fresh water applications.

MinCondFreq=x

x= minimum conductivity frequency (Hz) to enable pump turn-on, to prevent pump from running before MicroCAT is in water. Pump does not run when conductivity frequency drops below MinCondFreq=. MicroCAT

Configuration Sheet lists uncorrected (raw) frequency output at 0 conductivity.

Typical value (and factory-set default) for salt water and estuarine applications:

(zero conductivity frequency + 500 Hz).

Typical value for fresh water applications:

(zero conductivity frequency + 5 Hz).

AdaptivePumpControl=x

x=Y: Run pump before each sample based on

Adaptive Pump Control. Run pump for

OxNTau * OxTau20 * ft * fp. Default.

x=N: Do not use Adaptive Pump Control; run pump for [OxNTau * OxTau20] before each sample. Adaptive Pump Control should be

disabled only for testing and calibration.

Example: If AdaptivePumpControl=N, OxTau20=4.0 (sec), and OxNTau=7.0, pump will run for 28 sec (= 7.0 * 4.0) before each sample.

OxNTau=x

x= pump time multiplier.

Range 0 – 100.0; default 7.0.

PumpOn Turn pump on to test pump or remove sediment from inside plumbing. Pump runs

continuously, drawing current. Send

PumpOff to stop. PumpOn has no effect on pump operation while sampling.

PumpOff

Turn pump off if it was turned on with

PumpOn. PumpOff has no effect on pump operation while sampling.

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Note:

When using the SBE 63 integrated with a MicroCAT, the following setup in the SBE 63 is required:

• SetBaud=2400 (factory set; cannot be changed by command through the MicroCAT).

• SetEcho=1.

• SetFormat=1.

•

SetAvg=1 to 16; recommended

value is 2.

•

SetAutoRun=0.

•

<TxPwrSave> in SBE 63’s

GetSD

or GetHD response is 0 (factory set; cannot be changed by command).

Notes:

•

The MicroCAT pump does not run when

TS or TSR is sent to the

SBE 63. If desired, use PumpOn and PumpOff to turn the pump on and off.

•

Converted data in the SBE 63 response to TS is based on the calibration coefficients

programmed into the SBE 63, not the oxygen sensor calibration coefficients programmed into the

MicroCAT.


SBE 63 Optical Dissolved Oxygen Sensor Setup Commands

Send63=command

Command MicroCAT to send command to

SBE 63 and receive response; command can be any command recognized by SBE 63.

Example: Send GetSD command to SBE 63 to verify its setup (user input in bold).

send63=getsd

Sending SBE63: getsd

------ getsd

<StatusData DeviceType = 'SBE063' SerialNumber = '0012'>

<FirmwareVersion>V0.9n 05Dec2011</FirmwareVersion>

<LoaderVersion>SBE 63 FirmwareLoader V 1.0</LoaderVersion>

<CalibrationDate>04150</CalibrationDate>

<StatusConfig>

<BaudRate>002400</BaudRate>

<BlueOnTime>0000001</BlueOnTime>

<SampleAvg>002</SampleAvg>

<SampleInterval>00002</SampleInterval>

<BootDelay>001</BootDelay>

<OutFormat>01</OutFormat>

<AnalogGain>2</AnalogGain>

<AnalogOffset>06</AnalogOffset>

<Autorun>0</Autorun>

<BlueTupdate>0</BlueTupdate>

<SerPause>1</SerPause>

<Flags>0x0001</Flags>

</StatusConfig>

</StatusData>

<Executed/>

Commands that can be sent to the SBE 63 that are applicable to its use when integrated with the MicroCAT are listed below with brief descriptions; see the

SBE 63 manual for details.

GetSD

GetHD

Get and display SBE 63 status data.

Get and display SBE 63 hardware data.

GetCC

SetBaud=2400

SetFormat=1

SetAvg=x

Get and display SBE 63 calibration coefficients

Required SBE 63 setting for use with MicroCAT.


x= number of measurements in SBE 63 to average per sample; each measurement takes approximately 0.03 sec. Increasing SetAvg= may shorten sensor film life. Required range for use

with MicroCAT is 1-16; recommended value 2.

SetAutoRun=0

*Default


Reset most SBE 63 Setup parameters to factory defaults. Note that baud (SetBaud=) is not reset.

TS

Take 1 SBE 63 sample, transmit data in format defined by SBE 63’s SetFormat=.

TSR

Take 1 SBE 63 sample, transmit data in raw format (for factory diagnostics).

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Note:

If the FLASH memory is filled to capacity, sampling continues, but excess data is not saved in memory

(i.e., the MicroCAT does not overwrite the data in memory).

Note:

Do not send InitLogging or

SampleNumber=0 until all data has

been uploaded. These commands do not delete the data; they just reset the data pointer.

If you accidentally send one of these commands before

uploading, recover the data as follows:

1. Set SampleNumber=x, where x is your estimate of number of samples in memory.

2. Upload data. If x is more than actual number of samples in memory, data for non-existent samples will be bad, random data. Review uploaded data file carefully and delete any bad data.

3. If desired, increase x and upload data again, to see if there is additional valid data in memory.


Memory Setup Commands

InitLogging


Initialize logging – after all previous data has been uploaded, initialize logging before starting to sample again to make entire memory available for recording.

InitLogging sets sample number

(SampleNumber=) to 0 (sampling will start with sample 1). If not set to 0, data will be stored after last recorded sample.

Do not send InitLogging until all existing data has been uploaded.

MicroCAT requires this command to be sent twice, to prevent accidental reset of memory.

SampleNumber=x x= sample number for last sample in memory. SampleNumber=0 is equivalent to InitLogging. Do not send

SampleNumber=0 until all existing data has been uploaded.

MicroCAT requires this command to be sent twice, to prevent accidental reset of memory.

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Notes:

• See Data Formats after the command descriptions.

• The MicroCAT does not store salinity, sound velocity, or specific conductivity in memory when they are enabled. It calculates and outputs these derived parameters in real-time, when polled for data or as data is uploaded; therefore, outputting these parameters has no effect on the number of samples that can be stored in memory.

• Salinity, sound velocity, and specific conductivity (as well as other parameters, such as density) can also be calculated in SBE Data

Processing, from data uploaded from the MicroCAT’s memory.

• The pressure sensor is an absolute sensor, so its raw output

( OutputFormat=0) includes the effect of atmospheric pressure (14.7 psi).

However, when outputting pressure in

psi or decibars, the MicroCAT outputs pressure relative to the ocean surface (i.e., at the surface the output pressure is 0 psi or 0 dbar). The

MicroCAT uses the following equations to convert psia:

P (psi) = P (psia) – 14.7

P (dbar) = [P (psia) - 14.7] * 0.689476


Output Format Setup Commands

OutputFormat=x

x=0: output raw decimal data, which always includes temperature, conductivity, optional pressure, and dissolved oxygen.

x=1 (default): output converted decimal data.

x=2: output converted decimal XML data.

OutputTemp=x

x=Y: Output temperature (units defined by

SetTempUnits=) with each sample if

OutputFormat=1 or 2.

SetTempUnits=x

x=N: Do not.

x=0: Temperature output °C, ITS-90.

OutputCond=x

x=1: Temperature output °F, ITS-90.

x=Y: Output conductivity (units defined by SetCondUnits=) with each sample if


x=N: Do not.

SetCondUnits=x

x=0: Conductivity and specific conductivity output S/m.

x=1: Conductivity and specific conductivity output mS/cm.

2: Conductivity and specific conductivity output µS/cm.

OutputPress=x

x=Y: Output pressure (units defined by

SetPressUnits=) with each sample if


x=N: Do not.

SetPressUnits=x

x=0: Pressure output decibars.

x=1: Pressure output psi (gauge).

OutputOx=x

x=Y: Output oxygen (units defined by

SetOxUnits=) with each sample if


SetOxUnits=x

OutputSal=x

x=N: Do not.

x=0: Oxygen output ml/L.

x=1: Oxygen output mg/L.

x=Y: Output salinity (psu) with each sample if OutputFormat=1 or 2.

x=N: Do not.

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Note:

Specific conductivity

= C / (1 + A * [T - 25])

where

• C = conductivity (same units as specific conductivity: mS/cm, or

S/m)

µS/cm,

• T = temperature (°C)

•

A = thermal coefficient of conductivity for natural salt ion solutions (default 0.020).

Note:

The parameters reset by SetCoastal= can be individually set using

SetTempUnits=, SetCondUnits=,

SetPressUnits=, SetOxUnits=,

OutputTemp=, OutputCond=,

OutputPress=, OutputOx=,

OutputSal=, OutputSV=, OutputSC=, and

TxSampleNum=.

Note:

Legacy=1 forces the 37-SMP-ODO to act like older 37-SMP-ODOs

(firmware < 2.0), which did not have as many user output selections; it is intended for use by customers who have a mix of old and new instruments.


Output Format Setup Commands (continued)

OutputSV=x

x=Y: Output sound velocity (m/sec) using Chen and Millero formula

(UNESCO Technical Papers in Marine

Science #44) with each sample, if


OutputSC=x

x=N: Do not.

x=Y: Output specific conductivity (units defined by SetCondUnits=) with each sample, if OutputFormat=1 or 2.

UseSCDefault=x

x=N: Do not.

Only applicable if OutputSC=Y.

x=0: Use value specified by SetSCA=.

x=1: Use default value of 0.020 for thermal coefficient of conductivity for natural salt ion solutions (used in specific conductivity calculation).

SetSCA=x

Only applicable if OutputSC=Y and

UseSCDefault=0.

x= thermal coefficient of conductivity for natural salt ion solutions (used in specific conductivity calculation).

TxSampleNum=x

x=Y: Output sample number with each

polled sample if OutputFormat=1 or 2.

SetCoastal=x

x=N: Do not.

x=0: Reset output units to °C, S/m, dbar, and ml/L, and enable output of temperature, conductivity, pressure, and oxygen (disable output of salinity, sound velocity, specific conductivity, and sample number).

x=1: Reset output units to °C, psi, mg/L, and µS/cm (typical for coastal applications), and enable output of temperature, pressure, oxygen, and specific conductivity (disable output of conductivity, salinity, sound velocity, and sample number).

Legacy=x

x=0: Allow all commands documented in this manual.

x=1: Reset output units to °C, S/m, dbar, and ml/L, and enable output of temperature, conductivity, pressure, and oxygen (disable sound velocity, specific conductivity, and sample number). Do not allow user to disable temperature, conductivity, pressure, or oxygen, or to change output units. Modify DS response to match firmware < 2.0, for consistency with older instruments.

48


Autonomous Sampling (Logging) Commands


Notes:

• If the MicroCAT is logging data and the battery pack voltage is less than

7.1 volts for five consecutive scans, the MicroCAT halts logging.

• If the FLASH memory is filled to capacity, sampling continues but excess data is not saved in memory

(i.e., the MicroCAT does not overwrite the data in memory.

Notes:

• After receiving StartLater, the

MicroCAT displays not logging: waiting to start in reply to

DS. Once logging has started, the reply displays logging.

• If the delayed start date and time has already passed when StartLater is received, the MicroCAT executes

StartNow.

• If the delayed start date and time is more than 30 days in the future when StartLater is received, the

MicroCAT assumes that the user made an error in setting the delayed start date and time, and it executes

StartNow.

Note:

You may need to send Stop several times to get the MicroCAT to respond.

This is most likely to occur if sampling with a small SampleInterval and transmitting real-time data

( TxRealTime=Y).

Logging commands direct the MicroCAT to sample data at pre-programmed intervals and store the data in its FLASH memory. Pump operation is dependent on the settings for MinCondFreq= and AdaptivePumpControl=, and on the temperature and pressure of the previous sample, as described in

Pump Operation in Section 2: Description of MicroCAT.

SampleInterval=x x= interval (sec) between samples

(10 – 21,600). When commanded to start sampling with StartNow or StartLater, at

x second intervals MicroCAT takes measurement (running pump before each measurement), stores data in FLASH memory, transmits real-time data (if

TxRealTime=Y), and goes to sleep.

Note: Do not set SampleInterval= to less than

(pumping time + sampling time + 5 sec); see Pump Operation in Section 2:


StartNow

Start logging now, at rate defined by

SampleInterval=. Data is stored in

FLASH memory. Data is transmitted realtime if TxRealTime=Y.

StartDateTime=mmddyyyyhhmmss

Set delayed logging start month, day, year, hour, minute, second.

StartLater

Start logging at time set with delayed start date and time command, at rate defined by

SampleInterval. Data is stored in FLASH memory. Data is transmitted real-time if

TxRealTime=Y.

If you need to change MicroCAT setup after StartLater has been sent (but before logging has started), send Stop, change setup as desired, and then send

StartLater again.

Example: Program MicroCAT to start logging on 20 September 2013 12:00:00

(user input in bold).

STARTDATETIME=09202013120000

STARTLATER

Stop

Stop logging (started with StartNow or

StartLater) or stop waiting to start logging (if StartLater was sent but logging has not begun yet). Connect to

MicroCAT (Connect in Seaterm232’s

Communications menu) before entering

Stop. Stop must be sent before uploading data from memory.

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Note:

See Pump Operation in Section 2:


Note:

The MicroCAT has a buffer that stores the most recent data sample.

Unlike data in the FLASH memory, data in the buffer is erased upon removal or failure of power.


Polled Sampling Commands

These commands are used to request 1 or more samples from the MicroCAT.

Unless noted otherwise, the MicroCAT does not store the data in FLASH memory. For polled sampling commands that run the pump, pump operation is dependent on:

• Conductivity frequency from the last sample, and setting for

MinCondFreq=.

• Setting for AdaptivePumpControl=, and

• Temperature and pressure of the previous sample.

TS Do not pump. Take sample, store data in buffer, output data.

TSR Do not pump. Take sample, store data in buffer, output data in raw decimal format

(regardless of OutputFormat=).

TPS Run pump, take sample, store data in buffer, output data.

TPSH Run pump, take sample, store data in buffer (do not output data).

TPSS

Run pump, take sample, store data in buffer and FLASH memory, output data.

Note: MicroCAT ignores this command if sampling data (StartNow or StartLater has been sent).

TSN:x Do not pump. Take x samples and output data. To interrupt, press Esc key.


TPSN:x Run pump continuously while taking

x samples and outputting data. To interrupt this sampling, press Esc key.


T63

Do not pump. Command SBE 63 to take

1 sample, and output oxygen data in format set by SetFormat= in SBE 63.

SL

SLTP

Output last sample stored in buffer.

Output last sample stored in buffer. Then run pump, take new sample, and store data in buffer (do not output data from new sample).

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Note:

See Sampling Modes above for complete details on the operation of serial line synchronization.

Notes:

•

Use Seaterm232’s Upload menu to upload data that will be processed by SBE Data

Processing. Manually entering a data upload command does not produce data with the required header information for processing by our software. These commands are included here for reference for users who are writing their own software.

•

If not using the Upload menu -

To save data to a file, click

Capture before entering a data upload command.

• See Data Formats after these

Command Descriptions.


Serial Line Sync Commands

SyncMode=x x=Y: Enable serial line sync. When a simple pulse (a single character) is transmitted,

MicroCAT runs pump, takes a sample, stores data in FLASH memory, and goes to sleep.

Data is transmitted real-time if

TxRealTime=Y. Pump operation is dependent on setting for MinCondFreq= and AdaptivePumpControl=, and temperature and pressure of previous sample, as described in Pump Operation in Section 2:

Description of MicroCAT.

x=N: Disable serial line synchronization.

Data Upload Commands

Stop sampling (send Stop) before uploading data.

GetSamples:b,e

Upload data from scan b to scan e, in format defined by OutputFormat=.

First sample is number 1. As data is uploaded, screen first displays start time = start sample number =

These are start time and starting sample number for requested data.

DDb,e Upload data from scan b to scan e, in converted decimal form

(OutputFormat=1) (regardless of

OutputFormat=).

First sample is number 1.

As data is uploaded, screen first displays start time =, start sample number = .

These are start time and starting sample number for requested data.

Example: Upload samples 1 to 200 to a file (user input in bold).

(Click Capture menu and enter desired filename in dialog box)

GETSAMPLES:1,200

or

DD1,200

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Note:

F = floating point number

S = string with no spaces

Note:

Dissolved oxygen sensor coefficients are also stored separately in the

SBE 63.

•

Coefficients stored in the SBE 63 are used to output converted oxygen data in response to

Send63=TS or

T63. To modify those coefficients, use the

Send63= command to send calibration coefficient commands to the SBE 63; see the SBE 63 manual for those commands.

•

Coefficients stored in the

MicroCAT are used to output converted oxygen data in response to all other commands. They are also placed in the configuration

(.xmlcon) file automatically created when you upload data from the

MicroCAT memory. The .xmlcon file is used by SBE Data Processing when post-processing the uploaded data.


Calibration Coefficients Commands


PCalDate=S

PA0=F

PA1=F

PA2=F

PTCA0=F

PTCA1=F

PTCA2=F

PTCB0=F

PTCB1=F

PTCB2=F

PTempA0=F

PTempA1=F

PTempA2=F

POffset=F

Dissolved Oxygen

OxCalDate=S

OxTau20=F

OxA0=F

OxA1=F

OxA2=F

OxB0=F

OxB1=F

OxC0=F

OxC1=F

OxC2=F

OxTA0=F

OxTA1=F

OxTA2=F

OxTA3=F

OxE=F

Calibration coefficients are initially factory-set and should agree with

Calibration Certificates shipped with the MicroCAT

Temperature

TCalDate=S

TA0=F

TA1=F

S=

F=

F=

F=

F=

Temperature calibration date.

Temperature A0.

Temperature A1.

Temperature A2.

Temperature A3.

TA2=F

TA3=F

Conductivity

CCalDate=S

CG=F

CH=F

CI=F

CJ=F

WBOTC=F

CTCor=F

CPCor=F

Pressure

F=

F=

F=

F=

S=

F=

F=

F=

Conductivity calibration date.

Conductivity G.

Conductivity H.

Conductivity I.

Conductivity J.

Conductivity wbotc.

Conductivity ctcor.

Conductivity cpcor.

F=

F=

F=

F=

F=

F=

F=

F=

F=

F=

S=

F=

F=

F=

Pressure calibration date.

Pressure A0.

Pressure A1.

Pressure A2.

Pressure ptca0.

Pressure ptca1.

Pressure ptca2.

Pressure ptcb0.

Pressure ptcb1.

Pressure ptcb2.

Pressure temperature a0.



Pressure offset (decibars).

S= Oxygen calibration date.

F= Oxygen Tau20 (sensor response time).

F= Oxygen A0 coefficient.



F= Oxygen B0 coefficient.


F= Oxygen C0 coefficient.



F= Oxygen TA0 coefficient.




F= Oxygen E coefficient.

52


Data Formats

Notes:

• Time is the time at the

start of the sample.

• When TxRealTime=Y, real-time autonomous data and real-time serial line sync data transmitted to the computer is preceded by a # sign.

• The MicroCAT’s pressure sensor is an absolute sensor, so its raw output

(

OutputFormat=0) includes the effect of atmospheric pressure (14.7 psi). As shown on the Calibration Sheet, Sea-

Bird’s calibration (and resulting calibration coefficients) is in terms of psia. However, when outputting pressure in psi or decibars, the

MicroCAT outputs pressure relative to the ocean surface (i.e., at the surface the output pressure is 0 psi or 0 dbar).

The MicroCAT uses the following equations to convert psia:

P (psi) = P (psia) – 14.7

P (dbar) = [P (psia) - 14.7] * 0.689476

Each scan ends with a carriage return <CR> and line feed <LF>.

• OutputFormat=0: raw decimal data, for diagnostic use at Sea-Bird tttttt, ccccc.ccc, pppppp, vvvv, oo.ooo, t.tttttt, dd mmm yyyy, hh:mm:ss

where

o tttttt = temperature A/D counts. o ccccc.ccc = conductivity frequency (Hz). o pppppp = pressure sensor pressure A/D counts; sent if optional pressure sensor installed. o vvvv = pressure sensor pressure temperature compensation A/D counts; sent if optional pressure sensor installed. o oo.ooo = oxygen sensor phase (µsec). o t.tttttt = oxygen sensor temperature voltage. o dd mmm yyyy = day, month, year. o hh:mm:ss = hour, minute, second.

Note that salinity, sound velocity, specific conductivity, and sample number are not sent, regardless of the setting for those parameters.

All data is separated with a comma and a space.

Example: Sample data output when pressure sensor is installed and OutputFormat=0:

524276, 2886.656, 785053, 2706, 4044.734, 16.952, 0.685624, 15 May 2013, 09:01:34

(temperature, conductivity, pressure sensor pressure counts, pressure sensor temperature compensation, oxygen phase, oxygen temperature voltage, date, time)

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Note:

The MicroCAT uses the raw phase delay and raw thermistor voltage from the integrated DO sensor, along with pressure and salinity data from the CTD, to compute and output oxygen in ml/L or mg/L. If the MicroCAT does not include a pressure sensor, it uses the

MicroCAT’s reference pressure

( ReferencePressure=) in the pressure correction term of the oxygen equation.


• OutputFormat=1 (default): converted decimal data tt.tttt, c, p.ppp, oo.ooo, sss.ssss, vvvv.vvv, x, dd mmm yyyy, hh:mm:ss, n

where

o tt.tttt = temperature (sent if OutputTemp=Y; units defined by

SetTempUnits=). o c = conductivity (sent if OutputCond=Y; units defined by

SetCondUnits=). c.ccccc if SetCondUnits=0 (S/m) cc.cccc if SetCondUnits=1 (mS/cm) ccccc.c if SetCondUnits=2 (µS/cm) o p.ppp = pressure (sent if optional pressure sensor installed and

OutputPress=Y; units defined by SetPressUnits=.)

Number of digits to left of decimal place is dependent on pressure sensor range. o oo.ooo = oxygen (sent if OutputOx=Y; units defined by

SetOxUnits=). o sss.ssss = salinity (psu); sent if OutputSal=Y. o vvvv.vvv = sound velocity (m/sec); sent if OutputSV=Y. o x = specific conductivity; sent if OutputSC=Y

(units defined by SetCondUnits=). x.xxxxx if SetCondUnits=0 (S/m) xx.xxxx if SetCondUnits=1 (mS/cm) xxxxx.x if SetCondUnits=2 (µS/cm) o dd mmm yyyy = day, month, year. o hh:mm:ss = hour, minute, second. o n = sample number in FLASH memory (sent if TxSampleNum=y, and autonomous sampling or using polled sampling commands that store data in FLASH memory or retrieve last sample from FLASH memory).

Leading zeros are suppressed, except for one zero to the left of the decimal point. All data is separated with a comma and at least one space.

Example: Sample data output for real-time autonomous data when pressure sensor is installed, OutputFormat=1,

SetTempUnits=0, SetCondUnits=0, SetPressUnits=0, SetOxUnits=0, and outputting all parameters:

23.6261, 0.00002, -0.267, 0.838, 0.0115, 1492.967, 0.00002,15 May 2013, 12:28:00, 1

(temperature, conductivity, pressure, oxygen, salinity, sound velocity, specific conductivity, date, time, sample number)

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Note:

• For ease in reading, the data structure is shown with each XML tag on a separate line. However, there are no carriage returns or line feeds between tags (see example below).

• The MicroCAT uses the raw phase delay and raw thermistor voltage from the integrated DO sensor, along with pressure and salinity data from the CTD, to compute and output oxygen in ml/L or mg/L. If the MicroCAT does not include a pressure sensor, it uses the

MicroCAT’s reference pressure

( ReferencePressure=) in the pressure correction term of the oxygen equation.


• OutputFormat=2: converted decimal data in XML

<?xml version=”1.0”?>

<datapacket>

<hdr>

<mfg>Sea-Bird</mfg>

<model>37SMP-ODO-RS232</model>

<sn>nnnnnnnn</sn>

</hdr>

<data>

<t1>ttt.tttt</t1>

<c1>cc.ccccc</c1>

<p1>p.ppp </p1>

<ox63r>oo.ooo </ox63r>

<sal>sss.ssss</sal>

<sv>vvvv.vvv </sv>

<sc>x</sc>

<smpl>n</smpl>

<dt>yyyy-mm-ddThh:mm:ss</dt>

</data>

</datapacket>

where

o 037nnnnn = MicroCAT serial number o ttt.tttt = temperature (sent if OutputTemp=Y; units defined by

SetTempUnits=). o c = conductivity (sent if OutputCond=Y; units defined by

SetCondUnits=). c.ccccc if SetCondUnits=0 (S/m) cc.cccc if SetCondUnits=1 (mS/cm) ccccc.c if SetCondUnits=2 (µS/cm) o p.ppp = pressure (sent if optional pressure sensor installed and

OutputPress=Y; units defined by SetPressUnits=).

Number of digits to left of decimal place is dependent on pressure sensor range. o oo.ooo = oxygen (sent if OutputOx=Y; units defined by

SetOxUnits=). o sss.ssss = salinity (psu); sent if OutputSal=Y. o vvvv.vvv = sound velocity (m/sec); sent if OutputSV=Y. o x = specific conductivity; sent if OutputSC=Y

(units defined by SetCondUnits=). x.xxxxx if SetCondUnits=0 (S/m) xx.xxxx if SetCondUnits=1 (mS/cm) xxxxx.x if SetCondUnits=2 (µS/cm) o dd mmm yyyy = day, month, year. o hh:mm:ss = hour, minute, second. o n = sample number in FLASH memory (sent if TxSampleNum=y, and autonomous sampling or using polled sampling commands that store data in FLASH memory or retrieve last sample from FLASH memory).

Leading zeros are suppressed, except for one zero to the left of the decimal point.

Example: Sample data output for real-time autonomous data when pressure sensor is installed, OutputFormat=2,

SetTempUnits=0, SetCondUnits=0, SetPressUnits=0, SetOxUnits=0, and outputting all parameters:

<?xml version="1.0"?><datapacket><hdr><mfg>Sea-Bird</mfg><model>37SMP-ODO-RS232</model>

<sn>03700000</sn></hdr><data><t1>23.6261</t1><c1>0.00002</c1><p1>-0.267</p1>

<ox63r>0.838</ox63r><sal>0.0115</sal><sv>1492.967</sv><sc>0.00002</sc><smpl>1</smpl>

<dt>2013-05-15T12:28:00</dt></data></datapacket> CRLF

(temperature, conductivity, pressure, oxygen, salinity, sound velocity, specific conductivity, sample number, date and time)

55


Optimizing Data Quality / Deployment Orientation

Note:

A pump clogged with sediment results in poor flushing, causing poor quality data.

A A

Section A-A:

Looking down


Bleed hole

Intake Exhaust

10 degree minimum

Background Information

Sea-Bird’s general recommendation is to deploy the MicroCAT with the plumbing in an inverted U-shape, to minimize the ingestion of sediment. A small bleed hole in the duct provides a way for air to exit the plumbing, so that the pump will prime and operate. In considering the effect of air on the pump, it can be instructive to look at the amount of air in the water column:

• Case 1: The top ~2 meters of the water column may contain a continuous supply of bubbles injected into the system by breaking waves. In this area, the ability to continuously eliminate air from the system, throughout the deployment, is of prime concern.

• Case 2: The next ~30 meters of the water column is not typically affected by bubbles from breaking waves. Without a bleed hole, it could take a few days to weeks after deployment for the air to clear out of the system in an inverted U-shape. However, once the air was bled, no more air would be injected into the plumbing.

• Case 3: Below ~30 meters, without a bleed hole, it could take only a few hours to a day for the air to clear out of the system in an inverted U-shape.

As in Case 2, once the air was bled, no more air would be injected into the plumbing.

The bleed hole, while providing a way for air to exit the plumbing, also provides a little more ventilation; this ventilation will cause a slight decrease in the concentration of anti-foulant in the water held in the plumbing between samples. In our judgment, and the experience of customers, the risk of poor data due to sediment accumulation is usually greater than the risk of slightly reduced effectiveness of the anti-foulant, or is at least a reasonable trade-off.

Deployment Recommendations

• Most deployments – Deploy the MicroCAT with the plumbing in an

inverted U-shape (as shown in the photos), allowing air to exit the plumbing through the bleed hole.

• Deployments where severe bio-fouling is the main concern and

sediment is not an issue –

Case A: You need accurate data immediately upon deployment -

Plug the bleed hole. Deploy the MicroCAT with the plumbing in an

upright U-shape, providing maximum bio-foul protection but leaving the

MicroCAT vulnerable to ingestion of sediment.

Case B: You can skip some initial data, allowing time for trapped air to dissolve into the water and the pump to prime properly – Plug the bleed

hole. Deploy the MicroCAT with the plumbing in an inverted U-shape, providing maximum bio-foul protection as well as protection from the ingestion of sediment. This deployment method will provide good data within a day if the deployment is deeper than ~30 meters. Eliminate scans associated with the initial deployment by evaluating the conductivity data; minimal changes in conductivity are an indication that pump flow is not correct because air in the plumbing has prevented the pump from priming.

• Deployments where air bubbles are the main concern and sediment is

not an issue - Plug the bleed hole. Deploy the MicroCAT with the plumbing in an upright U-shape. This orientation provides better bleeding of air from the plumbing than can be achieved with the small bleed hole, but leaves the MicroCAT vulnerable to ingestion of sediment.

• Deployments where (for mounting reasons) the preferred orientation

is horizontal – Sea-Bird does not recommend horizontal mounting, because sediment can accumulate in the conductivity cell, resulting in very poor quality conductivity data. As a minimum, incline the

MicroCAT 10 degrees above the horizontal, with the inlet and

exhaust pointing down, to prevent sediment accumulation and provide proper pump operation.

56


Setup for Deployment

Note:

You can program your controller to send periodic requests to transmit the last data sample from the MicroCAT memory ( SL), while sampling autonomously. Alternatively, if not interested in sampling autonomously, you can program the controller to send periodic requests to take and transmit a sample ( TPS or TPSS).

1. Install new AA lithium cells (see Section 5: Routine Maintenance and

Calibration) or ensure the existing battery pack has enough capacity to cover the intended deployment.

2. Ensure all data has been uploaded, and then send InitLogging to make the entire memory available for recording. If InitLogging is not sent, data will be stored after the last recorded sample.

3. Set the date and time (DateTime=).

4. Program the MicroCAT for the intended deployment (see Section 3:

Preparing MicroCAT for Deployment for connection information; see information in this section on commands and sampling modes):

A. Setup the MicroCAT as desired.

B. If you want the MicroCAT to sample autonomously when deployed, use one of the following command sequences to initiate logging:

• StartNow to start logging now, taking a sample every

SampleInterval= seconds.

• StartDateTime= and StartLater to start logging at the specified date and time, taking a sample every SampleInterval= seconds.

• SyncMode=Y to place the MicroCAT in serial line sync mode, so that a simple pulse on the RS-232 line will initiate a sample.

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Deployment


CAUTIONS:

• Do not use WD-40 or other petroleum-based lubricants, as they will damage the connectors.

•

For wet-pluggable MCBH connectors:

Silicone lubricants

in a spray can may contain ketones, esters, ethers, alcohols, or glycols in their propellant.

Do not use these sprays, as they will damage the connector.

I/O cable connector

Locking sleeve

For most applications, deploy in orientation shown

(connector at bottom)

Mounting clamp and guide – loosen hardware to separate clamp/guide halves and mount on mooring cable

The MicroCAT comes with a pre-installed Sea-Bird wire mounting clamp and guide.

1. New MicroCATs are shipped with AF24173 Anti-Foulant Devices and a yellow protective label pre-installed.

A. Remove the protective label, if installed, from the intake and exhaust.

The label must be removed prior to deployment or

pressurization. If the label is left in place, the flow will be impeded, the sensor will not operate properly, and you may cause severe damage to the conductivity cell.

B. Verify that the Anti-Foulant Devices are installed

(see Replacing Anti-Foulant Devices – Mechanical Design Change in

Section 5: Routine Maintenance and Calibration).

2. Install the dummy plug or I/O cable (for external power and/or serial communication during deployment):

A. Lightly lubricate the inside of the dummy plug or cable connector with silicone grease (DC-4 or equivalent).

B. XSG Connector (shown in photos) - Install the dummy plug or cable connector, aligning the raised bump on the side of the plug/connector with the large pin (pin 1 - ground) on the MicroCAT. Remove any trapped air by burping or gently squeezing the plug/connector near the top and moving your fingers toward the end cap. OR

MCBH Connector – Install the plug/cable connector, aligning the pins.

C. Place the locking sleeve over the plug/connector. Tighten the locking sleeve finger tight only. Do not overtighten the locking sleeve and

do not use a wrench or pliers.

3. Attach the mounting clamp and guide to the mooring cable.

See Optimizing Data Quality / Deployment Orientation for deployment recommendations.

4. Verify that the hardware and external fittings are secure.

5. Deploy the MicroCAT.

58


Recovery

WARNING!

If the MicroCAT stops working while underwater, is unresponsive to commands, or shows other signs of flooding or damage, carefully secure it away from people until you have determined that abnormal internal pressure does not exist or

has been relieved. Pressure housings may flood under pressure due to dirty or damaged o-rings, or other failed seals. When a sealed pressure housing floods at great depths and is subsequently raised to the surface, water may be trapped at the pressure at which it entered the housing, presenting a danger if the housing is opened before relieving the internal pressure. Instances of such flooding are rare. However, a housing that floods at 5000 meters depth holds an internal pressure of more than

7000 psia, and has the potential to eject the end cap with lethal force.

A housing that floods at 50 meters holds an internal pressure of more than 85 psia; this force could still cause injury.

If you suspect the MicroCAT is flooded, point it in a safe direction away from people, and loosen the bulkhead connector very slowly, at least 1 turn. This opens an o-ring seal under the connector. Look for signs of internal pressure (hissing or water leak). If internal pressure is detected, let it bleed off slowly past the connector o-ring. Then, you can safely remove the end cap.

1. Rinse the instrument, conductivity cell, and dissolved oxygen sensor with fresh water. (See Section 5: Routine Maintenance and Calibration for conductivity cell and oxygen sensor cleaning and storage.)

2. Install a yellow protective label over the intake and exhaust (1 extra label is included in the spares kit that ships with the MicroCAT).

3. If the battery pack is exhausted, new cells must be installed before the data can be extracted. Stored data will not be lost as a result of exhaustion or removal of the battery pack. See Section 5: Routine Maintenance and

Calibration for replacement of cells.

4. If immediate redeployment is not required, you can leave the MicroCAT with battery pack in place and in a quiescent state (QS). Because the quiescent current required is only 30 microAmps, the battery pack can be left in place without significant loss of capacity (less than 5% loss per year).

59


Uploading and Processing Data

.

Note: For best performance and compatibility, Sea-Bird recommends that customers set their computer to English language format and the use of a period (.) for the decimal symbol. Some customers have found corrupted data when using the software's binary upload capability while set to other languages. To update your computer's language and decimal symbol

(instructions are for a Windows 7 operating system):

1. In the computer Control Panel window, select Region and Language.

2. In the Region and Language window, on the Formats tab, select English in the Format pull down box.

3. In the Region and Language window, click the Additional settings . . . button. In the Customize Format window, select the period (.) in the

Decimal symbol pull down box, and click OK.

4. In the Region and Language window, click OK.

Follow the procedure below to upload data:

Note:

Data may be uploaded during deployment or after recovery. If uploading after recovery, connect the

I/O cable as described in Power and

Communications Test in Section 3:

Preparing MicroCAT for Deployment.

1. Double click on SeatermV2.exe. The main screen appears

2. In the Instruments menu, select SBE 37 RS232. Seaterm232 opens.

3. Seaterm232 tries to automatically connect to the MicroCAT. As it connects, it sends GetHD and displays the response. Seaterm232 also fills the Send Commands window with the correct list of commands for your

MicroCAT. If there is no communication:

A. In the Communications menu, select Configure. The Serial Port

Configuration dialog box appears. Select the Comm port and baud rate for communication, and click OK. Note that the factory-set baud rate is documented on the Configuration Sheet.

B. In the Communications menu, select Connect (if Connect is grayed out, select Disconnect and reconnect). Seaterm232 will attempt to connect at the baud specified in Step A, but if unsuccessful will then cycle through all other available baud rates.

C. If there is still no communication, check cabling between the computer and MicroCAT.

D. If there is still no communication, repeat Step A with a different comm port, and try to connect again.

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Note:

You may need to send Stop several times to get the MicroCAT to respond.

Note:

BaudRate= must be sent twice. After the first entry, the MicroCAT changes to the new baud, and then waits for the command to be sent again at the new baud (In Seaterm232’s

Communications menu, select

Configure. In the dialog box, select the new baud rate and click OK. Then retype the command.). If it does not receive the command again at the new baud, it reverts to the previous baud rate.


4. If sampling autonomously, command the MicroCAT to stop logging by pressing any key, typing Stop, and pressing the Enter key.

5. Display MicroCAT status information by typing DS and pressing the

Enter key. The display looks like this:

SBE37SMP-ODO-RS232 v2.4.2 SERIAL NO. 10519 11 Oct 2013 09:56:59 vMain = 13.02, vLith = 3.20 samplenumber = 95, free = 399362 not logging, stop command sample interval = 600 seconds data format = converted engineering output temperature, Celsius output conductivity, S/m output pressure, Decibar output oxygen, ml/L output salinity, PSU output sound velocity, m/s output specific conductivity, S/m specific conductivity coefficient = 0.0200 output sample number transmit real time data = no sync mode = no minimum conductivity frequency = 3225.4 adaptive pump control enabled nTau = 7.0

Verify that the status is

not logging.

6. If desired, increase the MicroCAT’s baud rate for data upload.

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Note:

If binary upload is selected,

Seaterm232 uploads the data in binary and then converts it to ASCII text, resulting in a data file that is identical to one uploaded in ASCII text.


7. Click the Upload menu to upload stored data. Seaterm232 responds as follows:

A. Seaterm232 sends GetHD and displays the response, verifying that it is communicating with the 37-SMP-ODO.

B. Seaterm232 sends OutputExecutedTag=Y; this setting is required for the upload.

C. Seaterm232 sends GetSD and displays the response, providing information on the number of samples in memory.

D. In the Save As dialog box, enter the desired upload file name and click Save. The upload file has a .XML extension.

E. An Upload Data dialog box appears:

Select to enable ASCII text or binary upload. Binary is approximately twice as fast.

Select number of bytes uploaded in each block.

Seaterm232 uploads data in blocks, and calculates a checksum at end of each block. If block fails checksum verification, Seaterm232 tries to upload block of data again, cutting block size in half.

Bytes

Samples

1995

95

SamplesFree 399362

SampleLength 21

Defines data upload type and range:

• All data as a single file – All data is uploaded into 1 file.

• By scan number range – Enter beginning scan

(sample) number and total number of scans. All data within range is uploaded into 1 file.

95

To change upload file name selected in Step D above, click Browse to navigate to desired upload file path and name. Upload file has a .xml extension.

After Seaterm232 uploads data into .xml data file, it creates .hex data file and .xmlcon configuration file that are compatible with SBE Data Processing.

These files are placed in same directory as .xml data file, and have same name (but different extensions).

C:\UploadTest.xml

Make the desired selections.

62


8. Click the Header Form tab to customize the header:

Defines header information included with uploaded data:

• Prompt for header information –

As data is uploaded, user is prompted to fill out user-defined header form.

• Include default header form in upload file – User-defined default header form included in upload file. User is not prompted to add any information when data is uploaded.

• Don’t include default header form in upload file – Header information not included in upload file.

The entries are free form, 0 to 12 lines long. This dialog box establishes:

• the header prompts that appear for the user to fill in when uploading data, if Prompt for header information was selected

• the header included with the uploaded data, if Include default header

form in upload file was selected

Enter the desired header/header prompts.

9. Click Upload; the Status bar at the bottom of the window displays the upload progress:

A. Seaterm232 sends several status commands providing information regarding the number of samples in memory, calibration coefficients, etc., and writes the responses to the upload .xml file.

B. If you selected Prompt for header information in the Upload Data

dialog box – a dialog box with the header form appears. Enter the desired header information, and click OK. Seaterm232 writes the header information to the upload .xml file.

C. Seaterm232 sends the data upload command, based on your selection of upload range in the Upload Data dialog box, and writes the data to the upload .xml file.

D. From the information in the .xml file, Seaterm232 creates a .hex data file and .xmlcon configuration file that are compatible with SBE Data

Processing for processing and plotting the data. These files are placed in the same directory as the .xml data file and have the same name

(but different extensions).

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Notes:

• Ensure all data has been uploaded from the MicroCAT by reviewing the data in SBE Data Processing.

• If you do not run Data Conversion now, you can run it later by opening

SBE Data Processing.

• See the SBE Data Processing manual and/or Help for details.


.

10. After the data has been uploaded, Seaterm232 prompts you to run SBE

Data Processing’s Data Conversion module if desired. Data Conversion converts the .hex (raw data) file to a .cnv file, which can then be processed by other modules in SBE Data Processing.

Location to store all setup information. Default is directory with SeatermV2 application data, when Data Conversion is launched from Seaterm232.

Instrument configuration (.xmlcon) file location, which is created by

Seaterm232, and contains

MicroCAT’s calibration coefficients

(see dialog box below).

Directory and file name for raw data (.hex) file created by

Seaterm232 from uploaded data.

A. If you click Yes, Seaterm232 opens SBE Data Processing’s Data

Conversion module, and fills in the appropriate instrument configuration (.xmlcon) file and data (.hex) file on the File Setup tab.

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Manual revision 007

Indicates if MicroCAT includes optional pressure sensor. If no pressure sensor included, deployment pressure is used to calculate conductivity (and derived variables such as salinity and sound velocity). Value shown is based on

ReferencePressure= that was programmed into

MicroCAT;

you can change this value in

.xmlcon file, if you have updated deployment

depth information.


The Configuration dialog box (which appears if you click Modify on the File Setup tab) looks like this:

Time between scans. Must agree with

MicroCAT setup ( SampleInterval=); see reply from GetCD or DS.

Select SBE 63 for ODO MicroCAT.

Latitude is used to calculate local gravity (to calculate salt water depth). If enabled, software uses input latitude in calculation. If disabled, software uses Latitude on

Miscellaneous tab of Data Conversion.

Enter latitude for your deployment.

Double click on sensor to view and/or modify calibration coefficients, which are based on calibration coefficients that were programmed into MicroCAT.

The settings in the .xmlcon file created by Seaterm232 are based on the setup of the MicroCAT.

• Review the deployment latitude, and modify as needed.

• If your MicroCAT does not have a pressure sensor, review the deployment pressure, and modify as needed.

Click Save if you made any changes, and then click Exit.

65


B. Click on the Data Setup tab.


Select ASCII output.

Select:

- Upcast and downcast

- Create converted data (.cnv) file only

(only appropriate selections for

MicroCAT)

Select start time source for header: Instrument’s time stamp

(only appropriate selection for

MicroCAT).

Select which variables to convert and output (see dialog box below).

If desired, select to have software prompt you to modify start time to put in output .cnv header

(instead of using source for start time listed above), or to add a note to output .cnv header.

The Select Output Variables dialog box (which appears when you click

Select Output Variables on the Data Setup tab) looks like this:

If you plan to do further data processing, only output Conductivity, Temperature,

Pressure, and Oxygen raw. After processing is complete, compute calculated oxygen, salinity, density, etc. in the Derive module. See the SBE Data

Processing manual and/or Help for details.

Select Temperature, Conductivity, Pressure (optional), and Oxygen as well as desired derived variables such as salinity, sound velocity, etc.

Click OK.

C. At the bottom of the Data Conversion dialog box, click Start Process to convert the .hex file to a .cnv file.

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Notes:

To prepare for re-deployment:

1. After all data has been uploaded, send

InitLogging. If this is not sent, new data will be stored after the last sample, preventing use of the entire memory.

2. Do one of the following:

• Send QS to put the MicroCAT in quiescent (sleep) state until ready to redeploy. Quiescent current is only 30 microAmps, so the battery pack can be left in place without significant loss of capacity.

• Use StartNow to begin logging immediately.

• Set a date and time for logging to start using StartDateTime= and

StartLater.


11. Once the data is converted to a .cnv file, use the other SBE Data

Processing modules as desired:

• Derive module - Calculate additional derived variables.

• Sea Plot module - Plot data.

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Editing Raw Data File


Note:

Although we provide this technique for editing a raw .hex file,

Sea-Bird’s strong recommendation, as described above, is to always convert the raw data file and then

edit the converted file.

Sometimes users want to edit the raw .hex data file before beginning processing, to remove data at the beginning of the file corresponding to instrument soak time, remove blocks of bad data, edit the header, or add explanatory notes.

Editing the raw .hex file can corrupt the data, making it impossible to

perform further processing using Sea-Bird software. Sea-Bird strongly recommends that you first convert the data to a .cnv file (using the Data

Conversion module in SBE Data Processing), and then use other SBE Data

Processing modules to edit the .cnv file as desired.

The procedure described below for editing a .hex data file has been found to work correctly on computers running Windows 98, 2000, and NT. If the

editing is not performed using this technique, SBE Data Processing may

reject the edited data file and give you an error message.

1. Make a back-up copy of your .hex data file before you begin.

2. Run WordPad. In the File menu, select Open. The Open dialog box appears. For Files of type, select All Documents (*.*). Browse to the desired .hex file and click Open.

3. Edit the file as desired, inserting any new header lines after the System

Upload Time line. Note that all header lines must begin with an asterisk

(*), and *END* indicates the end of the header. An example is shown below (for an SBE 21), with the added lines in bold:

* Sea-Bird SBE 21 Data File:

* FileName = C:\Odis\SAT2-ODIS\oct14-19\oc15_99.hex

* Software Version Seasave Win32 v1.10

* Temperature SN = 2366

* Conductivity SN = 2366

* System UpLoad Time = Oct 15 1999 10:57:19

* Testing adding header lines

* Must start with an asterisk

* Place anywhere between System Upload Time & END of header

* NMEA Latitude = 30 59.70 N

* NMEA Longitude = 081 37.93 W

* NMEA UTC (Time) = Oct 15 1999 10:57:19

* Store Lat/Lon Data = Append to Every Scan and Append to .NAV

File When <Ctrl F7> is Pressed

** Ship: Sea-Bird

** Cruise: Sea-Bird Header Test

** Station:

** Latitude:

** Longitude:

*END*

4. In the File menu, select Save (not Save As). If you are running

Windows 2000, the following message displays:

You are about to save the document in a Text-Only format, which will remove all formatting. Are you sure you want to do this?

Ignore the message and click Yes.

5. In the File menu, select Exit.

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Manual revision 007 Section 5: Routine Maintenance and Calibration SBE 37-SMP-ODO RS-232

Section 5: Routine Maintenance and Calibration

This section reviews corrosion precautions, connector mating and maintenance, conductivity cell cleaning and storage, plumbing maintenance, plastic housing handling instructions, replacement of AA cells, O-ring maintenance, pressure sensor maintenance, replacement of AF24173 Anti-

Foulant Devices, and sensor calibration. The accuracy of the MicroCAT is sustained by the care and calibration of the sensors and by establishing proper handling practices.

Corrosion Precautions

Rinse the MicroCAT with fresh water after use and prior to storage.

All exposed metal is titanium; other materials are plastic. No corrosion precautions are required, but direct electrical connection of the MicroCAT housing to mooring or other dissimilar metal hardware should be avoided.

Connector Mating and Maintenance

Note:

See Application Note 57: Connector

Care and Cable Installation.

CAUTIONS:

• Do not use WD-40 or other petroleum-based lubricants, as they will damage the connectors.

•

For wet-pluggable MCBH connectors:

Silicone lubricants

in a spray can may contain ketones, esters, ethers, alcohols, or glycols in their propellant.

Do not use these sprays, as they will damage the connector.

I/O cable

Clean and inspect the connectors, cable, and dummy plug before every deployment and as part of your yearly equipment maintenance. Inspect connectors that are unmated for signs of corrosion product around the pins, and for cuts, nicks or other flaws that may compromise the seal.

When remating:

1. Lightly lubricate the inside of the dummy plug/cable connector with silicone grease (DC-4 or equivalent).

2. XSG Connector - Install the plug/cable connector, aligning the raised bump on the side of the plug/cable connector with the large pin

(pin 1 - ground) on the MicroCAT. Remove any trapped air by burping or gently squeezing the plug/connector near the top and moving your fingers toward the end cap. OR

MCBH Connector – Install the plug/cable connector, aligning the pins.

Locking sleeve

3. Place the locking sleeve over the plug/cable connector. Tighten the locking sleeve finger tight only. Do not overtighten the locking sleeve

and do not use a wrench or pliers.

Verify that a cable or dummy plug is installed on the MicroCAT before deployment.

69


Conductivity Cell and Dissolved Oxygen Sensor Maintenance

CAUTIONS:

•

Do not put a brush or any object inside the plumbing to clean it.

Touching and bending conductivity cell electrodes can change the calibration; large bends /movement of the electrodes can damage the cell. Touching or wiping the oxygen sensor window can damage it.

•

Do not store with water in the plumbing.

Freezing temperatures

(for example, Arctic environments or during air shipment) can break the conductivity cell or damage the oxygen sensor if it is full of water.

Intake

Exhaust

The MicroCAT’s conductivity cell, plumbing, and oxygen sensor plenum is shipped dry to prevent freezing in shipping.

Refer to Application Note 2D: Instructions for Care and Cleaning of

Conductivity Cells for conductivity cell cleaning procedures and cleaning

materials.

• The Active Use (after each cast) section of the application note is not applicable to the MicroCAT, which is intended for use as a moored instrument.

Refer to the SBE 63 manual for cleaning and storage procedures and materials.

• Prolonged exposure of the dissolved oxygen sensor optical window to

Triton X-100 may be harmful. Because the conductivity cell and oxygen sensor are integrated in this instrument, we recommend use of the dissolved oxygen sensor cleaning and storage instructions for the entire plumbing system; do not use cleaning and storage instructions for the

conductivity cell (these could damage the oxygen sensor).

To rinse or fill the conductivity cell, dissolved oxygen plenum, pump, and plumbing:

• Hold or clamp the MicroCAT with the connector end up, so that the plumbing is in a U-shape.

• Pour the water or solution through the plumbing with a syringe or wash bottle.

Plumbing Maintenance

A A

Section A-A:

Looking down

Bleed hole

A clogged bleed hole can trap air, preventing the pump from functioning properly; this will affect the data quality. Before each deployment, clean the bleed hole with 0.4 mm (0.016 inch) diameter (#26 AWG) wire; a wire is included in the spares kit that ships with the MicroCAT.

Insert the wire 13 mm (0.5 inches) into the hole to clean it; verify it is clear by spraying water into the hole.

70


Handling Instructions for Plastic ShallowCAT

See detail below

Cap screw securing connector end cap (one each side)

Detail - Connector end cap

CAUTION:


Super O-Lube.

The MicroCAT’s 7000-meter titanium housing offers the best durability with a modest amount of care. The ShallowCAT, a 350-meter plastic housing, saves money and weight. However, more care and caution in handling is required.

To get the same excellent performance and longevity for the plastic-housing version:

• The MicroCAT’s connector end cap is retained by two screws through the side of the housing. The screw holes are close to the end of the housing.

Particularly in a cold environment, where plastic is more brittle, the potential for developing a crack around the screw hole(s) is greater for the plastic housing than for the titanium housing. Observe the following precautions –



When removing the end cap (to replace the AA lithium cells and/or to access the electronics), be careful to avoid any impact in this area of the housing.



When reinstalling the end cap, do not use excess torque on the screws. Sea-Bird recommends tightening the screws to 15 inch-lbs.

Alternatively, tighten the screws finger-tight, and then turn each screw an additional 45 degrees.

• A plastic housing is more susceptible to scratches than a titanium housing.

Do not use screwdrivers or other metal tools to pry off the end cap.



Of primary concern are scratches on O-ring mating and sealing surfaces. Take extra precaution to avoid a scraping contact with these surfaces when replacing AA lithium cells and/or re-seating the end cap.



Also take care to keep the O-ring lubricated surfaces clean – avoid trapping any sand or fine grit that can scratch the critical sealing surfaces. If the O-ring lubricant does accumulate any material or grit that can cause a leak or make a scratch, it must be carefully cleaned and replaced with fresh, clean lubricant (Parker Super O Lube).



Shallow, external scratches are cosmetic only, and will not affect the performance of the MicroCAT. However, deep external scratches can become points of weakness for deep deployments or fracture from impact during very cold weather.

• If you remove the screws securing the conductivity cell guard to the housing (for example, to change the Anti-Foulant Devices), follow the same precautions as described above for removing and replacing the connector end cap.

See Battery Pack Installation in Section 3: Preparing MicroCAT for

Deployment and Appendix II: Electronics Disassembly / Reassembly for detailed step-by-step procedures for removing the MicroCAT’s end cap.

71


Replacing AA Cells

Notes:

• For details and photos, see Installing

Battery Pack in Section 3: Preparing

MicroCAT for Deployment.

•

Only use the battery pack with the

yellow cover plate. Older

MicroCATs without dissolved oxygen use a battery pack with a red cover plate; the wiring of that pack is different from this one, and will not work properly in the 37-SMP-IDO.

•

Cells must be removed before returning the MicroCAT to Sea-Bird.

Do not return used cells to Sea-Bird when shipping the MicroCAT for calibration or repair.

• See Shipping Precautions in

Section 1: Introduction.

1. Remove the 2 cap screws holding the I/O connector end cap to the

MicroCAT housing. Remove the I/O end cap by twisting the end cap counter clockwise; the end cap will release from the housing. Pull the end cap out.

2. Loosen the captured screw holding the battery pack in the housing, and remove the battery pack from the housing.

3. Place the handle in an upright position. Unscrew the yellow cover plate from the top of the battery pack assembly.

4. Roll the 2 O-rings on the outside of the pack out of their grooves.

5. Remove the existing cells. Install new cells, alternating positive (+) end first and negative (-) end first to match the labels on the pack.

6. Roll the O-rings into place in the grooves on the side of the battery pack.

7. Place the handle in an upright position. Reinstall the battery pack cover plate.

8. Replace the battery pack assembly in the housing, and secure the assembly with the captured screw. Plug in the Molex connector. Reinstall the MicroCAT end cap, and secure with the 2 cap screws.

O-Ring Maintenance

Note:

For details on recommended practices for cleaning, handling, lubricating, and installing O-rings, see the Basic

Maintenance of Sea-Bird Equipment module in the Sea-Bird training materials on our website.

CAUTION:


Super O-Lube.

Recommended inspection and replacement schedule:

• For connector end cap O-rings – inspect each time you open the housing to replace the cells; replace approximately once a year.

• For O-rings that are not normally disturbed (for example, on the electronics end cap) - approximately every 3 to 5 years.

Remove any water from the O-rings and mating surfaces in the housing with a lint-free cloth or tissue. Inspect O-rings and mating surfaces for dirt, nicks, and cuts. Clean or replace as necessary. Apply a light coat of O-ring lubricant

(Parker Super O Lube) to O-rings and mating surfaces.

Pressure Sensor (optional) Maintenance

Pressure port plug

CAUTION:

Do not put a brush or any object in

the pressure port. Doing so may damage or break the pressure sensor.

The pressure port is located behind the mount clamp. The pressure port plug has a small vent hole to allow hydrostatic pressure to be transmitted to the pressure sensor inside the instrument, while providing protection for the pressure sensor, keeping most particles and debris out of the pressure port.

Periodically (approximately once a year) inspect the pressure port to remove any particles, debris, etc:

1. Unscrew the pressure port plug from the pressure port.

2. Rinse the pressure port with warm, de-ionized water to remove any particles, debris, etc.

3. Replace the pressure port plug.

72


Replacing Anti-Foulant Devices – Mechanical Design Change

CAUTIONS:

•

Be careful not to damage the glass conductivity cell or the thermistor when removing /

replacing Anti-Foulant Devices.

•

If applicable to your MicroCAT, see Handling Instructions for

Plastic ShallowCAT.

The AF24173 Anti-Foulant Devices are installed at the intake and the pump exhaust. Details are provided below on replacing the AF24173 Anti-Foulant

Devices. This page provides the mechanical details for the SBE 37-SMP-ODO

MicroCAT. The following page, developed for a MicroCAT that does not include an integral pump or dissolved oxygen sensor, provides the precautions and handling details.

1. Remove the 4 Phillips-head screws holding the conductivity cell guard to the housing. Carefully remove the cell guard.

2. Remove and replace the Anti-Foulant Devices.

3. Carefully replace the cell guard, securing it to the housing with the

4 Phillips-head screws.

Conductivity cell guard

Shorter screw

Remove screws

(both sides,

4 total)

Longer screw

Thermistor

Intake

Anti-Foulant

Devices

Exhaust


73


Replacing Anti-Foulant Devices (SBE 37-SI, SM, IM)

AF24173

Anti-Foulant

Device

WARNING!

AF24173 Anti-Foulant Devices contain bis(tributyltin) oxide.

Handle the devices only with rubber or latex gloves. Wear eye protection. Wash with soap and water after handling.

Read precautionary information on product label (see Appendix IV) before proceeding.

It is a violation of US Federal Law to use this product in a manner inconsistent with its labeling.

The MicroCAT has an anti-foulant device cup and cap on each end of the cell.

New MicroCATs are shipped with an Anti-Foulant Device and a protective plug pre-installed in each cup.

Wearing rubber or latex gloves, follow this procedure to replace each Anti-

Foulant Device (two):

1. Remove the protective plug from the anti-foulant device cup;

2. Unscrew the cap with a

5

/

8

-inch socket wrench;

3. Remove the old Anti-Foulant Device. If the old device is difficult to remove:

• Use needle-nose pliers and carefully break up material;

• If necessary, remove the guard to provide easier access.

Place the new Anti-Foulant Device in the cup;

4. Rethread the cap onto the cup. Do not over tighten;

Cup

Cap

5. If the MicroCAT is to be stored, reinstall the protective plug. Note that

the plugs must be removed prior to deployment or pressurization.

If the plugs are left in place during deployment, the cell will not register conductivity. If left in place during pressurization, the cell may be destroyed.

Plug

Cap

Cup

CAUTION:

Anti-foulant device cups are attached to the guard and connected with tubing to the cell

.

Removing the guard without disconnecting the cups from the guard

will break the cell. If the guard must be removed:

1. Remove the two screws connecting each anti-foulant device cup to the guard.

2. Remove the four Phillips-head screws connecting the guard to the housing and sensor end cap.

3. Gently lift the guard away.

74


Sensor Calibration

Notes:

• Cells must be removed before returning the MicroCAT to Sea-Bird.

Do not return used cells to Sea-Bird when shipping the MicroCAT for recalibration or repair.

• Please remove AF24173 Anti-

Foulant Devices from the anti-foulant device cup before returning the

MicroCAT to Sea-Bird. Store them for future use. See Replacing Anti-

Foulant Devices for removal procedure.

Conductivity cell

Thermistor

Sea-Bird sensors are calibrated by subjecting them to known physical conditions and measuring the sensor responses. Coefficients are then computed, which may be used with appropriate algorithms to obtain engineering units. The sensors on the MicroCAT are supplied fully calibrated, with coefficients printed on their respective Calibration Certificates (see back of manual). These coefficients have been stored in the MicroCAT’s EEPROM.

We recommend that MicroCATs be returned to Sea-Bird for calibration.

Conductivity Sensor Calibration

The conductivity sensor incorporates a fixed precision resistor in parallel with the cell. When the cell is dry and in air, the sensor’s electrical circuitry outputs a frequency representative of the fixed resistor. This frequency is recorded on the Calibration Certificate and should remain stable (within 1 Hz) over time.

The primary mechanism for calibration drift in conductivity sensors is the fouling of the cell by chemical or biological deposits. Fouling changes the cell geometry, resulting in a shift in slope. Accordingly, the most important determinant of long-term sensor accuracy is the cleanliness of the cell. We recommend that the conductivity sensor be calibrated before and after deployment, but particularly when the cell has been exposed to contamination by oil slicks or biological material.

Temperature Sensor Calibration

The primary source of temperature sensor calibration drift is the aging of the thermistor element. Sensor drift will usually be a few thousandths of a degree during the first year, and less in subsequent intervals. Sensor drift is not substantially dependent upon the environmental conditions of use, and — unlike platinum or copper elements — the thermistor is insensitive to shock.

Dissolved Oxygen Sensor Calibration

The primary mechanism for calibration drift in optical oxygen sensors is the fouling of the optical window by chemical or biological deposits. Accordingly, the most important determinant of long-term sensor accuracy is the cleanliness of the window. We recommend that oxygen sensors be calibrated before and after deployment, but particularly when the sensor has been exposed to contamination by oil slicks or biological material.

Another important mechanism for oxygen sensor drift is photobleaching of the sensor film. Keep the SBE 63 sensor film out of direct sunlight if detached from the main body of the MicroCAT. Also, every sample that is taken illuminates the film with short wavelength light that eventually degrades the film. As a rule of thumb, re-calibration of the oxygen sensor on the MicroCAT is recommended when enough samples are taken to fill the MicroCAT’s memory (300,000 to500,000 samples).

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Manual revision 007

Note:

The MicroCAT’s pressure sensor is an absolute sensor, so its raw output

( OutputFormat=0) includes the effect of atmospheric pressure (14.7 psi). As shown on the Calibration Sheet, Sea-

Bird’s calibration (and resulting calibration coefficients) is in terms of psia. However, when outputting pressure in psi or decibars, the

MicroCAT outputs pressure relative to the ocean surface (i.e., at the surface the output pressure is 0 psi or 0 dbar).

The MicroCAT uses the following equations to convert psia:

P (psi) = P (psia) – 14.7

P (dbar) = [P (psia) - 14.7] * 0.689476

Section 5: Routine Maintenance and Calibration SBE 37-SMP-ODO RS-232

Pressure Sensor (optional) Calibration

The optional strain-gauge pressure sensor is a mechanical diaphragm type, with an initial static error band of 0.05%. Consequently, the sensor is capable of meeting the MicroCAT’s 0.10% error specification with some allowance for aging and ambient-temperature induced drift.

Pressure sensors show most of their error as a linear offset from zero.

A technique is provided below for making small corrections to the pressure sensor calibration using the offset (POffset=) calibration coefficient term by comparing MicroCAT pressure output to readings from a barometer.

Allow the MicroCAT to equilibrate in a reasonably constant temperature environment for at least 5 hours before starting. Pressure sensors exhibit a transient change in their output in response to changes in their environmental temperature. Sea-Bird instruments are constructed to minimize this by thermally decoupling the sensor from the body of the instrument. However, there is still some residual effect; allowing the MicroCAT to equilibrate before starting will provide the most accurate calibration correction.

1. Place the MicroCAT in the orientation it will have when deployed.

2. In Seaterm232:

A. Set the pressure offset to 0.0 (POffset=0).

B. Set the output format to converted decimal (OutputFormat=1), enable pressure output (OutputPress=y), and set pressure output units to decibars (SetPressUnits=0).

C. Send TSN:100 to take 100 samples and transmit data.

3. Compare the MicroCAT output to the reading from a good barometer at the same elevation as the MicroCAT’s pressure sensor port.

Calculate offset = barometer reading – MicroCAT reading

4. Enter the calculated offset (positive or negative) in the MicroCAT’s

EEPROM, using POffset= in Seaterm232.

Offset Correction Example

Absolute pressure measured by a barometer is 1010.50 mbar. Pressure displayed from MicroCAT is -2.5 dbar.

Convert barometer reading to dbar using the relationship: mbar * 0.01 = dbar

Barometer reading = 1010.50 mbar * 0.01 = 10.1050 dbar

The MicroCAT’s internal calculations output gage pressure, using an assumed value of 14.7 psi for atmospheric pressure. Convert MicroCAT reading from gage to absolute by adding 14.7 psia to the MicroCAT’s output:

-2.5 dbar + (14.7 psi * 0.689476 dbar/psia) = -2.5 + 10.13 = 7.635 dbar

Offset = 10.1050 – 7.635 = + 2.47 dbar

Enter offset in MicroCAT.

For demanding applications, or where the sensor’s air ambient pressure response has changed significantly, calibration using a dead-weight generator is recommended. The pressure sensor port uses a

7

/

16

-20 straight thread for mechanical connection to the pressure source. Use a fitting that has an O-ring tapered seal, such as Swagelok-200-1-4ST, which conforms to

MS16142 boss.

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Manual revision 007 Section 6: Troubleshooting SBE 37-SMP-ODO RS-232

Section 6: Troubleshooting

This section reviews common problems in operating the MicroCAT, and provides the most common causes and solutions.

Problem 1: Unable to Communicate with MicroCAT

If OutputExecutedTag=N, the S> prompt indicates that communications between the MicroCAT and computer have been established. Before proceeding with troubleshooting, attempt to establish communications again by selecting Connect in the Communications menu in Seaterm232 or pressing the Enter key several times.

Cause/Solution 1: The I/O cable connection may be loose. Check the cabling between the MicroCAT and computer for a loose connection.

Cause/Solution 2: The instrument communication settings may not have been entered correctly in Seaterm232. Verify the settings in the Serial Port

Configuration dialog box (Communications menu -> Configure). The settings should match those on the instrument Configuration Sheet.

Cause/Solution 3: The I/O cable between the MicroCAT and computer may not be the correct one. The I/O cable supplied with the MicroCAT permits connection to standard 9-pin RS-232 interfaces.

Problem 2: No Data Recorded

Cause/Solution 1: The memory may be full; once the memory is full, no further data will be recorded. Verify that the memory is not full using GetSD or DS (free = 0 or 1 if memory is full). Sea-Bird recommends that you upload all previous data before beginning another deployment. Once the data is uploaded, send InitLogging to reset the memory. After the memory is reset,

GetSD or DS will show samples = 0.

Problem 3: Unreasonable T, C, P, or D.O. Data

The symptom of this problem is a data file that contains unreasonable values

(for example, values that are outside the expected range of the data).

Cause/Solution 1: A data file with unreasonable (i.e., out of the expected range) values for temperature, conductivity, pressure, or dissolved oxygen may be caused by incorrect calibration coefficients in the MicroCAT. Send GetCC to verify the calibration coefficients in the MicroCAT match the instrument

Calibration Certificates. Note that calibration coefficients do not affect the raw data stored in MicroCAT memory.

• If you have not yet overwritten the memory with new data, you can correct the coefficients and then upload the data again.

• If you have overwritten the memory with new data, you can manually correct the coefficients in the .xmlcon configuration file, and then reprocess the data in SBE Data Processing’s Data Conversion module.

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Manual revision 007 Section 6: Troubleshooting SBE 37-SMP-ODO RS-232

Cause/Solution 2: Minimal changes in conductivity are an indication that the pump flow is not correct. Poor flushing can have several causes:

• Air in the plumbing may be preventing the pump from priming. This can result from:

- A clogged air bleed hole; clean the air bleed hole (see Plumbing

Maintenance in Section 5: Routine Maintenance and Calibration).

- Incorrect orientation for a shallow deployment in a location with breaking waves; see Optimizing Data Quality / Deployment Orientation in

Section 4: Deploying and Operating MicroCAT.

• The pump may be clogged by sediment. Using a wash bottle, flush the plumbing to attempt to dislodge the sediment. If the sediment is impacted and you cannot flush it, return the MicroCAT to Sea-Bird for servicing.

To minimize ingestion of sediment for future deployments, see

Optimizing Data Quality / Deployment Orientation in Section 4:

Deploying and Operating MicroCAT.

• The pump may not be turning on before each sample, if MinCondFreq= is set too high. See Command Descriptions in Section 4: Deploying and

Operating MicroCAT for details.

Problem 4: Salinity Spikes

Salinity is a function of conductivity, temperature, and pressure, and must be calculated from C, T, and P measurements made on the same parcel of water.

Salinity is calculated and output by the 37-SMP-ODO if OutputSal=Y.

Alternatively, salinity can be calculated in SBE Data Processing’s Data

Conversion module from the data uploaded from memory (.hex file) or in SBE

Data Processing’s Derive module from the converted (.cnv) file.

[Background information: Salinity spikes in profiling (i.e., moving, fast sampling) instruments typically result from misalignment of the temperature and conductivity measurements in conditions with sharp gradients. This misalignment is often caused by differences in response times for the temperature and conductivity sensors, and can be corrected for in postprocessing if the T and C response times are known.]

In moored, pumped instruments such as the 37-SMP-ODO MicroCAT, the pump flushes the conductivity cell at a faster rate than the environment changes, so the T and C measurements stay closely synchronized with the environment (i.e., even slow or varying response times are not significant factors in the salinity calculation). More typical causes of salinity spikes in a moored 37-SMP-ODO include:

Cause/Solution 1: Severe external bio-fouling can restrict flow through the conductivity cell to such an extent that the conductivity measurement is significantly delayed from the temperature measurement.

Cause/Solution 2: For a MicroCAT moored at shallow depth, differential solar heating can cause the actual temperature inside the conductivity cell to differ from the temperature measured by the thermistor. Salinity spikes associated mainly with daytime measurements during sunny conditions may be caused by this phenomenon.

Cause/Solution 3: For a MicroCAT moored at shallow depth, air bubbles from breaking waves or spontaneous formation in supersaturated conditions can cause the conductivity cell to read low of correct.

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Manual revision 007

Glossary

Note:

The 37-SMP-ODO battery pack has a

yellow cover plate. Older MicroCATs

without dissolved oxygen use a

battery pack with a red cover plate;

the wiring of that pack is different from this one, and cannot be used

with the 37-SMP-ODO.

Note:

All Sea-Bird software listed was designed to work with a computer running Windows XP service pack 2 or later, Windows Vista, or

Windows 7 (32-bit or 64-bit).

Note:

IDO MicroCATs are integrated with

SBE 43F DO sensors (Clark polarographic membrane type).

ODO MicroCATs are integrated with

SBE 63 Optical DO sensors.

Glossary SBE 37-SMP-ODO RS-232

Battery pack – 12 AA lithium cells in a battery holder that connects

4 cells in series and each series string in parallel. Battery pack uses:

• Saft LS 14500, AA, 3.6 V and 2.6 Amp-hours each

(www.saftbatteries.com) (recommended),

• Tadiran TL-4903, AA, 3.6 V and 2.4 Amp-hours each

(www.tadiran.com), or

• Electrochem 3B0064/BCX85, AA, 3.9 V and 2.0 Amp-hours each

(www.electrochemsolutions.com)

Deployment Endurance Calculator – Sea-Bird’s Windows software used to calculate deployment length for moored instruments, based on user-input deployment scheme, instrument power requirements, and battery capacity.

Fouling – Biological growth in the conductivity cell and in the oxygen sensor plenum during deployment.

MicroCAT (SBE 37) – High-accuracy conductivity, temperature, and optional pressure Recorder/Monitor. A number of models are available:

• 37-IM (Inductive Modem, internal battery pack and memory)

• 37-IMP (Inductive Modem, internal battery pack and memory, integral

Pump)

• 37-IMP-ODO (Inductive Modem, internal battery pack and memory, integral Pump, Optical Dissolved Oxygen sensor) – includes internal

RS-232 interface

• 37-SM (Serial interface, internal battery pack and Memory)

• 37-SMP (Serial interface, internal battery pack and Memory, integral

Pump)

• 37-SMP-ODO (Serial interface, internal battery pack and Memory, integral Pump, Optical Dissolved Oxygen sensor)

• 37-SI (Serial Interface, memory, no internal battery pack) *

• 37-SIP (Serial Interface, integral Pump, memory, no internal battery pack) *

• 37-SIP-IDO (Serial Interface, integral Pump, Integrated Dissolved

Oxygen sensor, memory, no internal battery pack)

The serial interface versions are available with RS-232 or RS-485 interface.

Some serial interface versions are also available with an SDI-12 interface.

* Note: Version 3.0 and later of the 37-SI and 37-SIP include memory; earlier versions did not include memory.

PCB – Printed Circuit Board.

SBE Data Processing - Sea-Bird’s Windows data processing software, which calculates and plots temperature, conductivity, oxygen, and optional pressure, and derives variables such as salinity and sound velocity.

Scan – One data sample containing temperature, conductivity, optional pressure, oxygen, and date and time, as well as optional derived variables

(salinity, sound velocity, specific conductivity).

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CAUTION:


Super O-Lube.

Glossary SBE 37-SMP-ODO RS-232

Seasoft V2 – Sea-Bird’s Windows software package, which includes software for communication, real-time data acquisition, and data analysis and display. Seasoft V2 includes Deployment Endurance Calculator, SeatermV2, and SBE Data Processing.

SeatermV2 – Windows terminal program launcher, which launches the appropriate terminal program for the selected instrument (Seaterm232 for this

MicroCAT).

Seaterm232 – Windows terminal program used with Sea-Bird instruments that communicate via an RS-232 interface, and that were developed or redesigned in 2006 and later. The common feature of these instruments is the ability to output data in XML.

Super O-Lube – Silicone lubricant used to lubricate O-rings and O-ring mating surfaces. Super O-Lube can be ordered from Sea-Bird, but should also be available locally from distributors. Super O-Lube is manufactured by

Parker Hannifin (www.parker.com/ead/cm2.asp?cmid=3956).

TCXO – Temperature Compensated Crystal Oscillator.

Triton X-100 – Reagent grade non-ionic surfactant (detergent), used for cleaning the conductivity cell. Triton can be ordered from Sea-Bird, but should also be available locally from chemical supply or laboratory products companies. Triton is manufactured by Avantor Performance Materials

(www.avantormaterials.com/commerce/product.aspx?id=2147509608).

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Manual revision 007 Appendix I: Functional Description SBE 37-SMP-ODO RS-232

Appendix I: Functional Description

Sensors

Note:

Pressure ranges are expressed in meters of deployment depth capability.

The MicroCAT embodies the same sensor elements (3-electrode, 2-terminal, borosilicate glass cell, and pressure-protected thermistor) previously employed in our modular SBE 3 and SBE 4 sensors and in the SeaCAT and

SeaCATplus family.

The MicroCAT’s optional strain-gauge pressure sensor is available in the following pressure ranges: 20, 100, 350, 600, 1000, 2000, 3500, and

7000 meters. Compensation of the temperature influence on pressure offset and scale is performed by the MicroCAT’s CPU.

The Optical Dissolved Oxygen sensor is an SBE 63 Dissolved Oxygen sensor, with the same performance specifications.

Sensor Interface

Temperature is acquired by applying an AC excitation to a hermetically sealed

VISHAY reference resistor and an ultra-stable aged thermistor with a drift rate of less than 0.002°C per year. A 24-bit A/D converter digitizes the outputs of the reference resistor and thermistor (and optional pressure sensor).

AC excitation and ratiometric comparison using a common processing channel avoids errors caused by parasitic thermocouples, offset voltages, leakage currents, and reference errors.

Conductivity is acquired using an ultra-precision Wien Bridge oscillator to generate a frequency output in response to changes in conductivity.

Real-Time Clock

To minimize power and improve clock accuracy, a temperature-compensated crystal oscillator (TCXO) is used as the real-time-clock frequency source.

The TCXO is accurate to ± 1 minute per year (0 ºC to 40 ºC).

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Manual revision 007 Appendix II: Electronics Disassembly/Reassembly SBE 37-SMP-ODO RS-232

Appendix II: Electronics

Disassembly/Reassembly

CAUTION:

See Section 5: Routine Maintenance

and Calibration for handling instructions for the plastic

ShallowCAT housing.

Disassembly:

1. Remove the connector end cap and battery pack following instructions in

Section 3: Preparing MicroCAT for Deployment.

2. Remove two screws connecting the conductivity cell guard to the housing.

Put one of the removed end cap screws in the machined detail. Remove the housing by twisting the housing counter clockwise; the housing will release.

Cell guard

Remove screw, both sides,

2 total)

Threaded rod with

Phillips-head screw

Machined detail – place cap screw here

3. The electronics are on a sandwich of three rectangular PCBs. These PCBs are assembled to a bulkhead. To remove the PCB assembly:

A. Use a long screwdriver (#1 screwdriver) to remove the Phillips-head screw. The Phillips-head screw is a 198 mm (7.8 inch) threaded rod with Phillips-head.

B. Pull out the PCB assembly using the pylon (post with connector). The assembly will pull away from the edge connector used to connect to the sensors. If needed, pull the sandwich of three rectangular PCBs from the bulkhead.

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Manual revision 007 Appendix II: Electronics Disassembly/Reassembly

Note:

If the rod will not tighten, the PCBs have not fully mated or are mated in reverse.

Reassembly:

Threaded rod with

Phillips-head screw

Note:

Before delivery, a desiccant package is inserted in the housing and the electronics chamber is filled with dry

Argon gas. These measures help prevent condensation. To ensure proper functioning:

1. Install a new desiccant bag each time you open the electronics chamber. If a new bag is not available, see Application

Note 71: Desiccant Use and

Regeneration (drying).

2. If possible, dry gas backfill each time you open the housing. If you cannot, wait at least 24 hours before redeploying, to allow the desiccant to remove any moisture from the housing.

Note that opening the battery compartment does not affect desiccation of the electronics.

CAUTION:


Super O-Lube.


1. Replace all the components as shown at left. Tighten gently the threaded rod with Phillips-head screw. A gentle resistance can be felt as the PCB assembly mates to the edge connector.

2. Replace the housing on the end cap:

A. Remove any water from the O-rings and mating surfaces with a lintfree cloth or tissue. Inspect the O-rings and mating surfaces for dirt, nicks, and cuts. Clean as necessary. Apply a light coat of O-ring lubricant (Parker Super O Lube) to the O-rings and mating surfaces.

B. Carefully fit the housing onto the housing until the O-rings are fully seated.

C. Reinstall the two Phillips-head screws to secure the housing.

3. Reinstall the battery pack and end cap following instructions in

Section 3: Preparing MicroCAT for Deployment.

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Manual revision 007 Appendix III: Command Summary SBE 37-SMP-ODO RS-232

Appendix III: Command Summary

CATEGORY COMMAND DESCRIPTION

Note:

See Command

Descriptions in

Section 4: Deploying and Operating

MicroCAT for detailed information and examples.

Status

GetCD

GetSD

GetCC

GetEC

ResetEC

GetHD

Help

DS

DC

DateTime= mmddyyyyhhmmss

BaudRate=x

Display configuration data.

Display status data.

Display calibration coefficients.

Display event counter data.

Reset event counter.

Display hardware data.

Display list of currently available commands.

Display status and configuration data.

Display calibration coefficients.

Set real-time clock month, day, year, hour, minute, second.

x= baud rate (4800, 9600, 19200, 38400, 57600, or

115200). Default 9600.

General

Setup

Pump Setup

SBE 63

Optical DO

Sensor Setup

Memory

Setup

TxRealTime=x

ReferencePressure=x

QS

MinCondFreq=x

AdaptivePumpControl= x

OxNTau=x

PumpOn

PumpOff

Send63=command

Other commands

InitLogging

SampleNumber=x

x=N: Do not.

x=Y: Output real-time data while sampling autonomously or in serial line sync mode.

x=N: Do not.

x= reference pressure (gauge, dbar), used for conductivity (and optional salinity and sound velocity) computation, Adaptive Pump Control algorithm, and oxygen calculation when MicroCAT does not have pressure sensor.

Enter quiescent (sleep) state. Main power turned off, but data logging and memory retention unaffected.

x= minimum conductivity frequency (Hz) to enable pump turn-on.

x=Y: Run pump before each sample using Adaptive

Pump Control; run pump for

[OxNTau * OxTau20 * ft * fp]. Default.

x=N: Do not use Adaptive Pump Control; run pump before each sample for [OxNTau * OxTau20].

x= pump time multiplier (0 – 100.0). Default 7.0.

Turn pump on for testing or to remove sediment.

Turn pump off, if turned on with PumpOn.

Command MicroCAT to send command to SBE 63 and receive response (command can be any command recognized by SBE 63).

See SBE 63 manual for command list. Following setup of SBE 63 is required for use with MicroCAT:

SetFormat=1, SetAvg=1 to 16 (recommended value is 2), SetAutoRun=0.

Initialize logging to make entire memory available for recording.

x= sample number for last sample in memory.

SampleNumber=0 equivalent to InitLogging.

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Manual revision 007

Note:

Commands that enable/disable parameter outputs (temperature, conductivity, pressure, oxygen, salinity, sound velocity, specific conductivity, sample number) only apply if


Raw output

( OutputFormat=0) is not affected by enabling / disabling parameter outputs.

Note:

Do not set

SampleInterval= to less than

(pumping time + sampling time + 5 sec).

Appendix III: Command Summary SBE 37-SMP-ODO RS-232

CATEGORY

Output

Format

Setup

Autonomous

Sampling

(Logging)

COMMAND DESCRIPTION

OutputFormat=x

OutputTemp=x

SetTempUnits=x

OutputCond=x

SetCondUnits=x

OutputPress=x

SetPressUnits=x

OutputOx=x

SetOxUnits=x

OutputSal=x

OutputSV=x

OutputSC=x

UseSCDefault=x

x=0: Output raw decimal data.

x=1 (default): Output converted decimal data

x=2: Output converted decimal data in XML.

x=Y: Output temperature.

x=N: Do not.

x=0: Temperature °C, ITS-90.

x=1: Temperature °F, ITS-90.

x=Y: Output conductivity.

x=N: Do not.

x=0: Conductivity and specific conductivity S/m.

x=1: Conductivity and specific conductivity mS/cm.

x=2: Conductivity and specific conductivity µS/cm.

x=Y: Output pressure.

x=N: Do not.

x=0: Pressure decibars.

x=1: Pressure psi (gauge).

x=Y: Output oxygen.

x=N: Do not.

x=0: Oxygen ml/L.

x=1: Oxygen mg/L.

x=Y: Calculate and output salinity (psu).

x=N: Do not.

x=Y: Calculate and output sound velocity (m/sec).

x=N: Do not.

x=Y: Calculate and output specific conductivity.

x=N: Do not.

Only applicable if OutputSC=y.

x=0: Do not use default; use SetSCA=.

x=1: Use default value (0.020) for thermal coefficient of conductivity for natural salt ion solutions (specific conductivity calculation).

Only applicable if OutputSC=y and UseSCDefault=0.

SetSCA=x

TxSampleNum=x

SetCoastal=x

Stop

x= thermal coefficient of conductivity for natural salt ion solutions (specific conductivity calculation).

x=Y: Output sample number with each polled sample.

x=N: Do not.

x=0: Reset output units to °C, S/m, dbar, and ml/L, and enable output of temperature, conductivity, pressure, and oxygen (disable output of salinity, sound velocity, specific conductivity, and sample number).

x=1: Reset output units to °C, µS/cm, psi, and mg/L

(typical for coastal applications), and enable output of temperature, pressure, oxygen, and specific conductivity (disable output of conductivity, salinity, sound velocity, and sample number).

x=0: Allow all commands documented in this manual.

x=1: Reset output units to °C, S/m, dbar, and ml/L, and enable output of temperature, conductivity,

Legacy=x

pressure, and oxygen (disable sound velocity, specific conductivity, and sample number). Do not allow user to disable temperature, conductivity, pressure, or oxygen, or to change output units. Modify DS response to match firmware < 2.0, for consistency with older instruments.

SampleInterval=x

x= interval (sec) between samples (10 - 21600).

StartNow

StartDateTime= mmddyyyyhhmmss

StartLater

Start logging now.

Delayed logging start: month, day, year, hour, minute, second.

Start logging at delayed logging start time.

Stop logging or stop waiting to start logging. Press

Enter key before entering Stop. Must send Stop before uploading data.

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Manual revision 007

Note:

Use Seaterm232’s

Upload menu to upload data that will be processed by SBE Data

Processing. Manually entering a data upload command does not produce data with the required header information for processing by SBE Data Processing.

Polled

Sampling

Serial Line

Sync

Data Upload

( send Stop before sending upload command)

Appendix III: Command Summary

CATEGORY COMMAND

TS

TSR

TPS

TPSH

TPSS

TSN:x

TPSN:x

T63

SL

SLTP

SyncMode=x

GetSamples:b,e

DDb,e


DESCRIPTION

Do not pump. Take sample, store in buffer, output data.

Do not pump. Take sample, store in buffer, output data in raw decimal format.

Run pump, take sample, store in buffer, output data.

Run pump, take sample, store in buffer (do not output).

Run pump, take sample, store in buffer and in FLASH memory, output data.

Do not pump. Take x samples and output data.

Run pump continuously while taking x samples and outputting data.

Do not pump. Take sample from SBE 63, output oxygen data in format set by SetFormat= in SBE 63.

Output last sample stored in buffer.

Output last sample stored in buffer, run pump, take new sample, and store in buffer (do not output data from new sample).

x=Y: Enable serial line sync mode.

x=N: Disable serial line sync mode.

Upload scan b to scan e, in format defined by

OutputFormat=.

Upload scan b to scan e, in converted decimal form

(OutputFormat=1) (regardless of setting for

OutputFormat=).

86

Manual revision 007

Coefficients

(F=floating point number;

S=string with no spaces)

Dates shown are when calibrations were performed.

Calibration coefficients are initially factoryset and should agree with

Calibration

Certificates shipped with

MicroCATs.

View all coefficients with GetCC or

DC.

COMMAND

TCalDate=S

TA0=F

TA1=F

TA2=F

TA3=F

CCalDate=S

CG=F

CH=F

CI=F

CJ=F

WBOTC=F

CTCor=F

CPCor=F

PCalDate=S

PA0=F

PA1=F

PA2=F

PTCA0=F

PTCA1=F

PTCA2=F

PTCB0=F

PTCB1=F

PTCB2=F

PTempA0=F

PTempA1=F

PTempA2=F

POffset=F

OxCalDate=S

OxTau20=F

OxA0=F

OxA1=F

OxA2=F

OxB0=F

OxB1=F

OxC0=F

OxC1=F

OxC2=F

OxTA0=F

OxTA1=F

OxTA2=F

OxTA3=F

OxE=F

Appendix III: Command Summary

CATEGORY


DESCRIPTION

S=Temperature calibration date.

F=Temperature A0.

F=Temperature A1.

F=Temperature A2.

F=Temperature A3.

S=Conductivity calibration date.

F=Conductivity G.

F=Conductivity H.

F=Conductivity I.

F=Conductivity J.

F=Conductivity wbotc.

F=Conductivity ctcor.

F=Conductivity cpcor.

S=Pressure calibration date.

F=Pressure A0.

F=Pressure A1.

F=Pressure A2.

F=Pressure ptca0

F=Pressure ptca1.

F=Pressure ptca2.

F=Pressure ptcb0.

F=Pressure ptcb1.

F=Pressure ptcb2.

F=Pressure temperature a0.



F=Pressure offset (decibars).

S= Oxygen calibration date.

F= Oxygen Tau20 (sensor response time).













F= Oxygen E coefficient.

87

Manual revision 007 Appendix IV: AF24173 Anti-Foulant Device SBE 37-SMP-ODO RS-232

Appendix IV: AF24173 Anti-Foulant Device

AF24173 Anti-Foulant Devices supplied for user replacement are supplied in

polyethylene bags displaying the following label:

AF24173 ANTI-FOULANT DEVICE

FOR USE ONLY IN SEA-BIRD ELECTRONICS' CONDUCTIVITY SENSORS TO CONTROL THE GROWTH OF AQUATIC ORGANISMS

WITHIN ELECTRONIC CONDUCTIVITY SENSORS.

ACTIVE INGREDIENT:

Bis(tributyltin) oxide…………..………………………….....

OTHER INGREDIENTS: ……………………………….....

Total……………………………………………………….....

53.0%

47.0%

100.0%

DANGER

See the complete label within the Conductivity Instrument Manual for Additional Precautionary Statements and Information on the Handling, Storage, and

Disposal of this Product.

Net Contents: Two anti-foulant devices

Sea-Bird Electronics, Inc.

13431 NE 20 th Street

Bellevue, WA 98005

EPA Registration No. 74489-1

EPA Establishment No. 74489-WA-1

88


AF24173 Anti-Foulant Device

FOR USE ONLY IN SEA-BIRD ELECTRONICS’ CONDUCTIVITY SENSORS TO CONTROL

THE GROWTH OF AQUATIC ORGANISMS WITHIN ELECTRONIC CONDUCTIVITY

SENSORS.

ACTIVE INGREDIENT:

Bis(tributyltin) oxide…………..…………………………..... 53.0%

OTHER INGREDIENTS: ………………………………..... 47.0%

Total………………………………………………………..... 100.0%

DANGER

See Precautionary Statements for additional information.

If on skin or clothing

If swallowed

FIRST AID

• Take off contaminated clothing.

• Rinse skin immediately with plenty of water for15-20 minutes.

• Call a poison control center or doctor for treatment advice.

• Call poison control center or doctor immediately for treatment advice.

• Have person drink several glasses of water.

• Do not induce vomiting.

• Do not give anything by mouth to an unconscious person.

If in eyes

• Hold eye open and rinse slowly and gently with water for 15-20 minutes.

• Remove contact lenses, if present, after the first 5 minutes, then continue rinsing eye.

• Call a poison control center or doctor for treatment advice.

HOT LINE NUMBER

Note to Physician Probable mucosal damage may contraindicate the use of gastric lavage.

Have the product container or label with you when calling a poison control center or doctor, or going for treatment. For further information call National Pesticide Telecommunications

Network (NPTN) at 1-800-858-7378.

Net Contents: Two anti-foulant devices

Sea-Bird Electronics, Inc.

13431 NE 20 th

Street

Bellevue, WA 98005

EPA Registration No. 74489-1

EPA Establishment No. 74489-WA-1

89


PRECAUTIONARY STATEMENTS

HAZARD TO HUMANS AND DOMESTIC ANIMALS

DANGER

Corrosive - Causes irreversible eye damage and skin burns. Harmful if swallowed. Harmful if

absorbed through the skin or inhaled. Prolonged or frequently repeated contact may cause allergic reactions in some individuals. Wash thoroughly with soap and water after handling.

PERSONAL PROTECTIVE EQUIPMENT

USER SAFETY RECOMMENDATIONS

Users should:

• Remove clothing immediately if pesticide gets inside. Then wash thoroughly and put on clean clothing.

• Wear protective gloves (rubber or latex), goggles or other eye protection, and clothing to minimize contact.

• Follow manufacturer’s instructions for cleaning and maintaining PPE. If no such instructions for washables, use detergent and hot water. Keep and wash PPE separately from other laundry.

• Wash hands with soap and water before eating, drinking, chewing gum, using tobacco or using the toilet.

ENVIRONMENTAL HAZARDS

Do not discharge effluent containing this product into lakes, streams, ponds, estuaries, oceans, or other waters unless in accordance with the requirements of a National Pollutant Discharge Elimination

System (NPDES) permit and the permitting authority has been notified in writing prior to discharge.

Do not discharge effluent containing this product to sewer systems without previously notifying the local sewage treatment plant authority. For guidance contact your State Water Board or Regional

Office of EPA. This material is toxic to fish. Do not contaminate water when cleaning equipment or disposing of equipment washwaters.

PHYSICAL OR CHEMICAL HAZARDS

Do not use or store near heat or open flame. Avoid contact with acids and oxidizers.

DIRECTIONS FOR USE

It is a violation of Federal Law to use this product in a manner inconsistent with its labeling. For use only in Sea-Bird Electronics’ conductivity sensors. Read installation instructions in the applicable

Conductivity Instrument Manual.

90


STORAGE AND DISPOSAL

PESTICIDE STORAGE: Store in original container in a cool, dry place. Prevent exposure to heat or flame. Do not store near acids or oxidizers. Keep container tightly closed.

PESTICIDE SPILL PROCEDURE: In case of a spill, absorb spills with absorbent material. Put saturated absorbent material to a labeled container for treatment or disposal.

PESTICIDE DISPOSAL: Pesticide that cannot be used according to label instructions must be disposed of according to Federal or approved State procedures under Subtitle C of the Resource

Conservation and Recovery Act.

CONTAINER HANDLING: Nonrefillable container. Do not reuse this container for any other purpose. Offer for recycling, if available.

Sea-Bird Electronics/label revised 01-28-10

91

Manual revision 007 Appendix V: Replacement Parts SBE 37-SMP-ODO RS-232

Appendix V: Replacement Parts

Part

Number

Part Application Description

Power MicroCAT

Quantity in

MicroCAT

1

Holds AA cells 1

30411 Triton X-100

Bis(tributyltin) oxide device inserted into anti-foulant device cup

Octyl Phenol Ethoxylate –

Reagent grade non-ionic cleaning solution for conductivity cell

(supplied in 100% strength; dilute as directed)

801385

4-pin RMG-4FS to

9-pin DB-9S I/O cable with power leads,

2.4 m (8 ft)

From MicroCAT to computer

17043 Locking sleeve (for RMG) Locks cable/plug in place

1 (set of 2)

1

1

1

For when cable not used 1

801206

4-pin MCIL-4FS (wetpluggable connector) to

9-pin DB-9S I/O cable with power leads,

2.4 m (8 ft) long

From MicroCAT to computer 1

Locks cable/plug in place

171398.1

4-pin MCDC-4-F dummy plug with locking sleeve, wet-pluggable connector

For when cable not used

For use with computer with

DB-25 connector

1

1

-

92

Manual revision 007 Appendix V: Replacement Parts SBE 37-SMP-ODO RS-232

Assorted hardware and O-rings:

• 30900 Bolt,

¼-20 x 2”

, Hex head, titanium (secures guide to connector end cap and clamp to sensor end cap)

• 30633 Washer, ¼” Split Ring Lock, titanium (for 30900)

•

30634 Washer, ¼” Flat, titanium

(for 30900)

• 31019 O-ring, Parker 2-008

N674-70 (for 30900)

• 31066 Cap screw, 8-32 x ¾ socket head, titanium (secures guide to connector end cap)

• 31873 Cap Screw, 6-32 x 1/2”, socket head, titanium (secures clamp to sensor end cap)

• 30867 Washer, #6 split ring lock, titanium (for 31873)

• 31755 Cap Screw, 8-32 x 1/4" SH, titanium (secures connector end cap to housing)

• 30857 O-ring, Parker 2-033E515-

80 (connector end cap O-rings)

• 30858 O-ring, Parker 2-133 N674-

70 (battery pack end cap O-ring)

• 31322 O-ring, Parker 2-130 N674-

70 (battery pack housing O-rings)

• 31749 Hex Key, 7/64" long arm,

DoALL BDH12106 (tool for battery pack)

• 31089 Screw, 10-32 x ½” FH

Phillips, titanium (secures cell guard to end cap)

• 31118 Screw, 10-32 x 3/8” FH

Phillips, titanium (secures cell guard to sensor end cap)

•

31516 Hex Key, 9/64" long arm,

DoALL AHT58010 (tool for guide)

• 311281 Removable shipping sticker (covers cell intake and exhaust for storage)

• Air bleed valve wire kit (for clearing bleed valve)

-

93

Manual revision 007 Appendix VI: Manual Revision History SBE 37-SMP-ODO RS-232

Appendix VI: Manual Revision History

Manual

Version Date

001

002

Description

04/12 • Initial release.

08/12 • Update Shipping Precautions for latest IATA rules.

• Add Declaration of Conformity.

• Add cable and wiring diagrams.

003

004

• Add dimensional information for SBE 63 with titanium housing.

• Add weight for titanium housing.

• Update GetSD response from SBE 63.

• Fix typos.

01/13 • Update lithium shipping restrictions to meet 2013 requirements.

• Update Upload dialog box.

• Update Serial Port Configuration dialog box.

• Update software compatibility information.

• Add information about limitations with 115200 baud rate.

•

Remove ‘preliminary’ from power requirement specifications.

• Correct description of pump operation for polled sampling commands.

• Add information that MicroCAT ignores TPSS if it is sent while logging.

03/13 • Firmware 2.2.0 added commands for:

- Enabling / disabling T, C, P, DO, sound velocity, and specific conductivity.

- Setting parameter output units.

- Setting output and units for typical oceanographic or coastal applications using just 1 command.

005

- Enabling compatibility with firmware < 2.0 for customers with a mix of 37-SMP-ODOs.

• Delete baud rate of 2400 (incompatible with SBE 63 DO sensor, which operates at 2400 baud;

MicroCAT baud rate must be higher).

10/13 • Firmware 2.4.2: OxNTau= now appears in GetCD and DS responses. GetHD response now provides correct XML formatting.

• Correct description of OxNTau. OxNTau affects pump time, regardless of whether Adaptive

Pump Control is enabled or disabled (documentation previously said that it had no effect if

Adaptive Pump Control was enabled). Correct minimum pump time with Adaptive Pump Control to 3.0 sec.

• Update plastic housing depth rating to 350 meters.

• Add more information on required settings in SBE 63.

• Update SeatermV2 screen capture and Upload dialog box.

• Add information on editing raw .hex files.

• Update contents of spare hardware & o-ring kit.

• Add information on new protective label to cover intake and exhaust, in place of plugs that were used previously.

• Update information on cleaning air bleed valve.

• Add information on O-ring maintenance.

• Clarify that accuracy specifications are ±.

• Clarify that SetPressUnits=0 (decibars) and OutputPress=Y in pressure sensor calibration example in Section 5.

• Glossary - Add information on SDI-12 MicroCATs.

• Update Declaration of Conformity.

• Fix typos.

006 03/14 • Update temperature range and accuracy specifications.

• Provide information on titanium mount for SBE 63, for depths > 5000 m.

• Update lithium cell and battery language to conform to latest IATA rules.

• Add caution on using spray can lubricants on MCBH connectors.

• Remove standard and optional language.

Continued on next page

94

Manual revision 007 Appendix VI: Manual Revision History SBE 37-SMP-ODO RS-232

Continued from previous page

007 03/15 • Add more information on how converted oxygen is calculated.

• Add information on 16 V minimum for external voltage, if you want to avoid drawing power from battery pack.

• Add information on PC settings for binary upload.

• Add caution regarding using Parker Super O Lube, not Parker O Lube (which is petroleum based).

• Update language on where to find updated software on website.

• Remove 37-SMP-IDO, 37-IMP-IDO, and 37-SIP-ODO from MicroCAT listing in Glossary; not available.

• Correct typos.

• Switch to Sea-Bird Scientific cover.

95

Manual revision 007

Index

.

.hex files editing · 68

A

Adaptive pump control · 14, 44

Air bleed hole · 56, 70

Anti-Foulant Device · 88 removal before shipping to Sea-Bird · 75 replacing · 73, 74

Autonomous sampling · 30, 49

B

Battery pack · 11, 57 description · 20 endurance · 10, 16 installing · 20 replacing · 72 shipping precautions · 8

Baud rate · 32, 43

Bleed hole · 56, 70

C

Cable length · 32

Cables · 13

Calibration · 75

CE certification · 3

Cells replacing · 72

Cleaning · 70

Clock · 11, 81

Command summary · 84

Commands autonomous sampling · 49 baud rate · 43 calibration coefficients · 52 data format · 47 data upload · 51, 60 date and time · 43 descriptions · 33 general setup · 43 logging · 49 memory setup · 46 optical dissolved oxygen sensor setup · 45 polled sampling · 50 pump setup · 44

SBE 63 setup · 45 serial line sync · 51 status · 34 upload · 60

Communication defaults · 25

Conductivity cell · 81 cleaning · 70

Connector · 12, 69

Corrosion precautions · 69

Index SBE 37-SMP-ODO RS-232

96

D

Data Conversion · 64

Data format · 47, 53

Data processing · 10, 22, 60, 64

Data upload · 60

Date and time · 43

Declaration of Conformity · 3

Deployment · 56 installation · 58 preparing for · 20 setup · 57

Deployment Endurance Calculator · 10, 16

Deployment orientation · 10, 12, 58

Derive · 64

Description · 9

Dimensions · 12

Dissolved oxygen sensor cleaning · 70

Dissolved Oxygen sensor · 81

E

Editing data files · 68

Electronics disassembly/reassembly · 82

End cap · 69

End cap connector · 12

External power · See Power, external

F

Flooded MicroCAT · 59

Format data · 53

Functional description · 81

G

Glossary · 79

Guard removal · 73, 74

I

Initializing memory · 46

L

Limited liability statement · 2

Logging · 30, 49

M

Maintenance · 69

Manual revision history · 94

Memory · 11

Memory setup · 46

Minimum conductivity frequency · 14, 44

Modes · See Sampling modes

Mounting · 56

Manual revision 007

O

Orientation · 56

O-ring maintenance · 72

Output format · 47, 53

Oxygen sensor · 81 cleaning · 70

P

Parker Super O-Lube · 80

Parts replacement · 92

Plastic housing handling · 71

Plumbing maintenance · 70

Polled sampling · 29

Power endurance · 10 external · 11, 18

Pressure sensor · 81 maintenance · 72

Processing data · 60

Pump · 10, 11, 12, 14, 28, 50, 56, 58

Pump setup commands · 44

Q

Quick start · 6

R

Real-time setup baud rate · 32 cable length · 32

Recovery · 59 uploading data · 60

Replacement parts · 92

Revision history · 94

Index

S

Sample timing · 16

Sampling modes · 28 autonomous · 30 logging · 30 polled · 29 serial line sync · 31

SBE Data Processing · 10, 22, 64

Sea Plot · 64

Seasoft · 10, 22

Seaterm232 · 10, 22, 23, 60

SeatermV2 · 10, 22, 23, 60

Sensors · 11

Serial line sync · 31

Setup commands · 43

ShallowCAT handling · 71

Shipping precautions · 8

Software · 10, 22

Specifications · 11

Status commands · 34

Storage · 70

Super O-Lube · 80

System description · 9

T

Terminal program · 10, 22, 23, 60

Testing · 22

Thermistor · 81

Timeout description · 32

Transient current · 18

Triton · 80

Troubleshooting · 77

U

Unpacking MicroCAT · 7

Uploading data · 60

V

Versions · 94

W

Wiring · 13, 22


97

SBE 37-SMP-ODO RS-232 Manual

User Manual

SBE 37-SMP-ODO MicroCAT

C-T-ODO (P) Recorder

Conductivity, Temperature, Optical Dissolved Oxygen (pressure optional) Recorder with

RS-232 Interface & integral Pump

Limited Liability Statement

Extreme care should be exercised when using or servicing this equipment. It should be used or serviced only by personnel with knowledge of and training in the use and maintenance of oceanographic electronic equipment.

ELECTRONICS, INC. harmless from all product liability claims arising from the use or servicing of this system.

Declaration of Conformity

Table of Contents

Section 1: Introduction

About this Manual

Quick Start

Unpacking MicroCAT

Shipping Precautions

Note new rules as of

January 1, 2013

1

2

Section 2: Description of MicroCAT

System Description

Specifications

Dimensions and End Cap Connector

Cables and Wiring

Pump Operation

Sample Timing

Battery Pack Endurance

External Power

Section 3:

Preparing MicroCAT for Deployment

Battery Pack Installation

Software Installation

Power and Communications Test

Section 4:

Deploying and Operating MicroCAT

Sampling Modes

Real-Time Data Acquisition

Timeout Description

Command Descriptions

Data Formats

Optimizing Data Quality / Deployment Orientation

Setup for Deployment

Deployment

Recovery

Uploading and Processing Data

Editing Raw Data File

Section 5: Routine Maintenance and Calibration

Corrosion Precautions

Connector Mating and Maintenance

Conductivity Cell and Dissolved Oxygen Sensor Maintenance

Plumbing Maintenance

Handling Instructions for Plastic ShallowCAT

Replacing AA Cells

O-Ring Maintenance

Pressure Sensor (optional) Maintenance

Replacing Anti-Foulant Devices – Mechanical Design Change

Replacing Anti-Foulant Devices (SBE 37-SI, SM, IM)

Sensor Calibration

Section 6: Troubleshooting

Problem 1: Unable to Communicate with MicroCAT

Problem 2: No Data Recorded

Problem 3: Unreasonable T, C, P, or D.O. Data

Problem 4: Salinity Spikes

Glossary

Appendix I: Functional Description

Sensors

Sensor Interface

Real-Time Clock

Appendix II: Electronics

Disassembly/Reassembly

Appendix III: Command Summary

Appendix IV: AF24173 Anti-Foulant Device

AF24173 Anti-Foulant Devices supplied for user replacement are supplied in

polyethylene bags displaying the following label:

DANGER

AF24173 Anti-Foulant Device

PRECAUTIONARY STATEMENTS

HAZARD TO HUMANS AND DOMESTIC ANIMALS

DANGER