Zoom | AP+4 4401A | 4401 Oxy-Trace v4 - Barben Analyzer Technology

Instruction Manual
Natural Gas Measurement
4401 Oxy-Trace v4
Fiber-optic trace oxygen meter
Manual Revision 1
1
Instruction Manual
4401 Oxy-trace v4
Natural Gas
PC Software Version 4401TRACEv1.14
October 2006
Specification:
Stand-alone one-channel fiber-optic oxygen meter with
graphical LCD and Data-logger for oxygen mini-sensors.
PC control of the oxygen meter is available.
Excitation wavelength of 505 nm.
Polymer optical fibers (POF) of 2 mm diameter
connected by SMA fiber connectors.
Manufacturer:
Barben Analyzers Technology L.L.C.
5200 Convair Drive
Carson City, Nevada 89706
USA
Phone
Fax
(775) 883-2500
(775) 297-4740
Email
Internet
info@BAT4pH.com
www.BAT4pH.com
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Table of Contents
Page
1. Preface…………………………………………………………………………………….. 4
2. Safety Guidelines of the 4401 Oxy-NG………………………………………………… 5
3. Description of the 4401 Oxy-trace NG Device………………………………………… 7
4. General Instructions……………………………………………………………………… 8
5. Service…………………………………………………………………………………….. 8
6. Terminal Board Layout…………………………………………………………………... 9
7. Required Basic Equipment……………………………………………………………….11
8. Optical Oxygen Sensors………………………………………………………………….12
9. Housing for Oxygen in Natural Gas……………………………………………………..13
10. Configuration for the 4401………………………………………………………………..15
10.1 Applying Power to the 4401……..……………………………………………….. 15
10.2 Sensor Selection……………………………………………………………………17
10.3 Setting the Measurement Parameters……………………………………………17
10.4 Data Logging………………………………………………………………………..19
10.5 Configuration Menu………………………………………………………………...20
10.5.1 Analog Output……………………………………………………………20
10.5.2 Analog Input……………………………………………………………...21
10.5.3 Clock/Date Adjustment………………………………………………….22
10.5.4 Display Illumination……………………………………………………...22
10.5.5 Resetting the Configuration…………………………………………….22
10.6 Diagnostics and Test……………………………………………………………… 22
11.0 Calibration……………………………………………………………………………….22
11.1 Calibration………………………………………………………………………….. 22
11.2 Calibration of the BOS 3 w/Temperature Compensation……………………… 23
11.3 Calibration of the BOS 3 without Temperature Compensation………………...23
11.4 Calibration of the BOS 3 with Manual Temperature Compensation…………...24
12.0 Software Description…………………………………………………………………… 24
12.1 Software Installation……………………………………………………………….. 24
12.2 Function and Description………………………………………………………….. 25
12.2.1 Menu Bar………………………………………………………………… 26
12.2.2 Display……………………………………………………………………. 27
12.2.3 Instrument Information………………………………………………….. 28
12.3 LED Intensity…………………………………………………………………………29
12.4 Oxygen Units…………………………………………………………………………31
12.5 Analog Output……………………………………………………………………….. 31
12.6 Analog Input…………………………………………………………………………..31
12.7 Control Bar…………………………………………………………………………… 32
12.7.1 Control Buttons…………………………………………………………… 33
12.7.2 Temperature Compensation…………………………………………….. 35
12.7.3 External Temperature Compensation………………………………….. 35
12.7.4 Data Downloading…………………………………………………………36
12.7.5 Warning Lights……………………………………………………………..37
12.7.6 Graphic Display…………………………………………………………… 37
13.0 Error Codes……………………………………………………………………………… 38
13.1 Saved Data Handling………………………………………………………………...38
13.2 Advice for Correct Measurements…………………………………………………. 40
13.3 Signal Drifts Due to Oxygen Gradients……………………………………………. 40
13.4 Signal Drifts Due to Temperature Gradients……………………………………… 40
13.5 Signal Drifts Due to Photo-Decomposition……………………………………….. 40
13.6 Signal Drifts Due to Too Much Light……………………………………………….. 40
13.7 Performance Verification……………………………………………………………. 41
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13.8 Correction for Air Pressure…………………………………………………………..41
14.0 Technical Data…………………………………………………………………………….42
14.1 General Data…………………………………………………………………………..43
15.0 Technical Notes……………………………………………………………………………44
16.0 Enclosure Drawing………………………………………………………………………...45
17.0 Parts List……………………………………………………………………………………46
18.0 Trouble Shooting…………………………………………………………………………..46
19.0 Error Codes………………………………………………………………………………...47
1.0)
Preface
Congratulations!
You have chosen the new innovative technology for measuring oxygen concentration in natural gas from
Barben Analyzer Technology!
The 4401 Oxy-trace-NG for Natural Gas
measurements is a fixed instrument easy to use,
stand-alone fiber optic oxygen meter. The data
evaluation is PC supported.
The 4401 Oxy-trace-NG was specially developed
for small fiber optic oxygen sensors in a flow
through ¼” Swagelok tee and integrated sensor.
It is based on a fluorescence quenching
technology, which creates very stable, internally
referenced measured values. This enables a
more flexible use of oxygen sensors in a variety
of sensor fittings, if required.
Optical oxygen sensors (also called optodes) have the following outstanding properties:
•
•
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•
•
•
•
They are small
They do not consume oxygen
Limit of detection is 0.5 ppm oxygen
Three (3) different measurement ranges
On-line non-invasive and non-destructive oxygen measurements
The 4401-NG can measure in other gas phase ranges using different Optodes (BOS 1, BOS2)
They have excellent long term stability
Therefore, our sensors are ideally suited for measuring in every range of gas phase concentration in
Natural Gas in a variety of fittings, i.e., 12 mm, ½” NPT, or ¾” NPT.
Please feel free to contact our service team to find the best solution for your application.
Thank you.
Barben Analyzer Technology
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2.0) Safety Guidelines
PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE WORKING WITH THIS INSTRUMENT!
This device has left our factory after careful testing of all functions and safety requirements.
The perfectly functioning and operational safety of this instrument can only be ensured if the user observes the
usual safety precautions as well as the specific safety guidelines stated in this operating manual.
-
Before connecting the device to the electrical supply network, please ensure that the operating voltage
stated on the power supply corresponds to the main voltage input as describe on page 8.
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The perfect functioning and operat ional safety of the in strument can only be maintained und er the
environmental conditions, as specified, in Chapter 10 "Technical Data" of this operating manual.
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If the instrument is moved from cold to warm s urroundings, condensation may form and interf ere with
the functioning of the in strument. In this event, wa it until th e temperature of the in strument reaches
room temperature before putting the instrument back into operation.
-
Calibration, maintenance and repair work must only be done by a suitable qualified technician, trained
by Barben Analyzer Technology L.L.C.
-
Especially in the case of any damage to current-carrying parts, such as the power supply cab le or the
power supply itself, the device must be taken out of operation and protected against being put back into
operation.
-
If there is any reason to assume that the instrument can no longer be operated without a risk, it must be
set aside and appropriately marked to prevent further use.
-
The safety of the user may be endangered, e. g., if the instrument
* is visibly damaged;
* no longer operates as specified;
* has been stored under adverse conditions for a lengthy period of time;
* has been damaged in transport
-
If you are in doubt, the instrument should b
Technology, for repair and maintenance.
e sent back to the manufacturer,
Barben Analyzer
-
The operator of this measuring in strument must ensure that the following laws and guidelines are
observed when using dangerous substances:
* National protective labor legislation;
* Safety regulations for accident prevention;
* Safety data-sheets of the chemical manufacturer
The 4401 Oxy-trace v4 is enclosed in a NEMA 4 Stainless Steel enclosure;
The 4401 Oxy-trace v4 can be used in either industrial or laboratory environment;
The 4401 Oxy-trace v4 is Class I, Division II, Groups. A, B, C, and D (FM/CSA);
We explicitly draw you r attention to the fa ct that any da mage to th e instrument by misuse will void any
guarantee warranties.
Any internal operations on the unit must be done by a qualified technician that has been trained and authorized
by Barben Analyzer Technology and under antistatic conditions.
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The 4401 Oxy-trace-NG may only be operated by qualified personal.
This measuring instrument was developed for use in the natural gas industry. Thus, we must assume that, as a
result of their professional training and experience, the operators will know the necessary safety precautions to
take when handling this equipment and use of any cleaning chemicals.
Keep the 4401 Oxy-tra ce-NG and the equipment such as PT 1000 temperature sensor, pow
optical sensors out of the reach of children!
er supply and
As the ma nufacturer of the 4401 Oxy-trace -NG, we only consider ourselves responsible for safety and
performance of the device if
• The device is strictly used according to this instruction manual and the safety guidelines set forth
• The electrical insta llation of this ox ygen measuring instrument corresponds to th e standards set forth b y
(FM/CSA) for hazardous locations in Class I, Division II, Groups A, B, C, and D environments.
“Warning”
The 4401OXY Transmitter assembly is not for use in atmospheres containing an oxygen
concentration greater than 21% by volume.
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3.0 Description of the 4401 Oxy-trace NG v4 Device
The 4401 Oxy-trace NG is a p recision,
temperature compensated, stand-alone
oxygen meter enclosed in a NEMA 4
stainless steel case, designed for use with
the BOS family of fiber-optic oxygen
sensors in the gas phase and dissolved
oxygen measurements.
The rugged design and low
power
consumption makes the 4401 Oxy ready for
indoor and outdoor application in Class I,
Division II, Groups A – D environments.
4401 Oxy-trace v4 instrument features:
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Fiber-optic oxygen meter with temperature compensation
Programmable sampling rate
128x64 pixel graphical LCD
2 x 12bit, programmable voltage outputs with galvanic isolation
2 x 12bit, programmable current outputs with galvanic isolation
2 x 12bit, programmable analog voltage inputs with galvanic isolation
measuring range 0 – 250 % air saturation
110/220 Vac or 12/24 Vdc Power
RS 232 interface for PC communication, if desired
Stainless Steel NEMA 4
FM/CSA Class I, Division II, Groups A – D approved
The 4401 Oxy-trace NG is a precision oxygen meter, designed for 3 types of sensor ranges; BOS 1 (1 ppb to
1.8 mg/l DO/20 ppm to 4.2% v/v); BOS 2 (20 ppb to 22 ppm DO/50 ppm to 50% v/v); BOS 3 (0.5 ppm to 1000
ppm Gas Phase). The 4401 Oxy-NG is specifically designed for natural gas measurements using a flow
through fiber-optic oxygen sensor mounted in a ¼” Swagelok Tee. It is equipped with four independent Analog
Outputs (0 – 10 Vdc/4 – 20 mA) and two Analog Inputs. It is a stand-alone instrument with LCD and
integrated data-logger. The analog outputs are programmable to provide outputs for oxygen, temperature,
phase angle or signal amplitude. The digital interface (RS232) and PC software (included) is used for data
storage and external data logging that can store up to 26,000 data samples. Complete control including all
calibration and adjustments can be completed through your PC.
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4.0 General Instructions:
Warm-Up Time
The warm u p time of the electronic and opto-electronic co mponents of the 4401 Oxy-trace NG is 5 minutes.
Once the 4401 has warmed up stable measuring values will be obtained.
Maintenance
The instrument is maintenance-free . The housing should be cleane d only with a moist cloth. Never use
benzene, acetone, alcohol or other organic solv ents. The SMA-fiber connector of t he sensor can be clean ed
only with lint-free cloth. The sensor tip may be rinsed only with distilled water or ethanol.
Error codes
The error value is b inary coded. It means each b it corresponds to one specific error or warning. The summary
of error bits is given below:
bit 0 = ADC overflow
bit 1 = Ambient light
bit 2 = no oxygen sensor
bit 3 = no temperature sensor
bit 4 = current output 1 open loop error
bit 5 = current output 2 open loop error
bit 6 = overheat
bit 7 = system restart
Decoding example
If Error value received from a device is 10 then a following error has occurred:
Decimal 10 = Binary 00001010 (Table 1)
Here bit1 Ù ambient light and bit3 Ù no temperature sensor are “1”. This error code would appear if there was
too much of ambient li ght (sun lig ht illuminating the sen sor) and th e temperature sensor PT1000 is not
connected to the device.
Table 1
0001 = 1
0010 = 2
0011 = 3
0100 = 4
0101 = 5
0110 = 6
0111 = 7
1000 = 8
1001 = 9
1010 = 10
1011 = 11
1100 = 12
1101 = 13
1110 = 14
1111 = 15
Binary Numbers
5.0 Service
Maintenance and repair work may only be carried out by the manufacturer:
Barben Analyzer Technology LLC
5200 Convair Drive
Carson City, Nevada 89706
Phone: (775) 883-2500
Fax:
(775) 297-4740
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6.0 Terminal Layout and Description
Terminal Pin
Connection
DESCRIPTION
SMA
Connector
SMA fiber connector
Connect the fiber optic oxygen cable to SMA
connector located on the bottom of the 4401.
Wire to
Power Supply
Line adapter for power
supply
110/220 Vac power supply or optional 24 Vdc powered.
(note; must be ordered as 24 Vdc)
Ground (4)
Positive (5)
Negative (6)
FUNCTION
Connector for PT 1000 Connect the PT 1000 temperature sensor for
temperature compensated measurements here.
temperature sensor
TxD (23)
RxD(24)
Gnd (22)
RS232 interface
Connect the device with a RS232 data cable to your
PC/Notebook here (optional).
Ch 1 +10/-7
Ch 2 +13/-14
Analog out/input
(channel 1/2)
Voltage Output (0-10 V) from terminal board to external
recording device or DCS system
Ch 1 +19/-17
Ch 2 +18/-20
Analog out
(channel 1/2)
Current Output (4-20 mA) from terminal board to
external recording device or DCS system. Note that this
is a powered output
P
R
OE
TA
ER
CT
TH
I
V
E
INPUTS (SIGNAL)
0-10 VDC
(TEMP,
PRESSURE)
8 = V1+
12 = V116 = V2+
15 = V2-
(OUTPUTS (02, TEMP, AMP, PHASE)
0 - 10VDC
4 - 20 mA
10 = V1+
7 = V113 = V2+
14 = V2-
19 = I1+
17 = I118 = 12+
20 = 12-
TEMPERATURE
(PT1000)
5 = U+
6 = U4 = GND
External
Input Power
Located on
Power
Supply
(L)
RS232 INTERFACE
23 = TxD
24 = RxD
22 = GND
AUX DC OUTPUT
25 = +15VDC
26 = 0 VDC
(N)
100/240
VAC
50/60 Hz
- PE
Wiring Label 1 (VAC Version)
9
10
INPUTS (VARIOUS)
POWER
(9 - 24 VDC)
P
R
OE
TA
ER
CT
TH
I
V
E
1 = +VDC
2 = -VDC
(OUTPUTS (02, TEMP, AMP, PHASE)
0-10 VDC
(TEMP,
PRESSURE)
8 = V1+
12 = V116 = V2+
15 = V2-
0 - 10VDC
4 - 20 mA
10 = V1+
7 = V113 = V2+
14 = V2-
19 = I1+
17 = I118 = 12+
20 = 12-
TEMPERATURE
(PT1000)
5 = U+
6 = U4 = GND
RS232 INTERFACE
AUX DC OUTPUT
23 = TxD
24 = RxD
22 = GND
25 = +15VDC
26 = 0 VDC
Wiring Label 2 (DC Version)
-V dc +Vdc
Ch1-
C h1+
C h2+
C h2-
P in 2
P in 17
P in 19
P in 18
P in 20
P in 1
D C P o w er
In pu t
C h 1 C urren t
O u tp ut
C h 2 C urren t
O u tput
N ote: C urrent S inking O utputs
Terminal Board Connections
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7.0 Required Basic Equipment
• Oxygen meter 4401 Oxy-trace NG
• Line adapter (110/220 Vac, Optional 12/24 Vdc)
• Temperature sensor Pt 1000
• Flow through Tee fitting with sensor (DP-BOS3-L5-ST5-NOP-SSJ)
• PC / Notebook (optional)
(System requirements: Windows 98/2000/XP//Millenium/NT 4.0; Pentium processor, at least 133 MHz, 16
MB RAM)
• RS 232 Cable (optional)
Specifications
INSTRUMENT 4401 Oxy-trace NG (BOS3 Oxygen Sensor for Natural Gas)
Channels
Temperature (PT1000)
Digital interface
Analog outputs
Analog inputs
Specification
Analog output (Oxygen)
Analog output (Temperature,
PT1000)
Sample Rate
Power supply
1 x optical channel (SMA connector) , designed for mini-sensors
1 x PT1000 connector
Range
Resolution
Accuracy
0-50°C
±0.2°C
±1°C
RS 232 interface with galvanic isolation (19200 Baud, Data-bits 8),
(Tinned leads to SUB-D 9 cable for RS232 PC )
four independent, programmable 12bit analog I/O channels with galvanic
isolation (2 x voltage output 0-10 V; 2 x current output 4-20 mA)
four independent, programmable 12bit analog I/O channels with galvanic
isolation (2 x voltage input 0-10 V; 2 x current input 4-20 mA)
Range
Resolution
Accuracy
Adjustable (0 – 1000)
X.XX < 10/XXXX.X FS
± 5% of Reading
0-50°C
±0.5°C
±1.5°C
Programmable (default 3 second)
24 VDC/max.830 mA (110-240 VAC, 50/60 Hz adapter)
SOFTWARE OxyView
Oxygen units
Compatibility
Calibration
User selectable from:
air-saturation, oxygen-saturation, hPa, Torr, mg/L (=ppm), µmol
Windows 95/98/2000/Millenium/NT4.0/2000/XP
Conventional two-point calibration in oxygen-free environment (nitrogen)
and a second calibration value of 100 ppm (300 ppm Maximum).
ENVIRONMENTAL CONDITIONS
Operating Temperature (°C)
Storage Temperature (°C)
Relative humidity (%)
Dimensions, DxWxH (mm)
Weight (kg)
0 to +50
-10 to +65
up to 95 (IP 64)
8” x 10” x 8”
2.2
Trace Oxygen Sensor Type BOS3
Gaseous Oxygen
Measurement range
Limit of Detection (LOD)
Resolution
Accuracy (20 °C)
0 – 100 ppm Nominal (Maximum Range 1000 ppm)
0.5 ppm
< 10 ppm X.XX; >10 ppm XXXX.X ppm
5% of the oxygen concentration
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8.0 Optical Oxygen Sensors
Sensor Characteristic of Oxygen-Sensitive Sensors
The operation principle of the optical oxygen sensor is based on the flu orescence quenching of luminescence
caused by a collision between molecular oxygen and lumine scent dye molecules in the excited state. Figure
5.1 shows a typical response curv e of the BOS 3 oxy gen-sensitive sensor. In th e presence of oxygen t he
signal - in our case the phase angle Φ - decreases.
Figure 5.1 Response of the BOS3 sensor toward changes in the oxygen concentration.
Temperature
Barben Analyzer Technology Optical oxygen sensors must b e used with a PT1000 temperature sensor in the
temperature range between -10 to 50 °C. Barben Analyzer supplies the PT1000 temperature sensor with each
4401 Oxy-trace NG for compensation and to re cord temperature variations which are compensated using the
4401 Oxy-trace software.
Cross sensitivity
There exists no cross sensitivity for carbon dioxide (CO2), hydrogen sulfide (H2S), sulfur dioxide (SO2),
pH, any ionic species like sulfide (S2- ), sulfate (SO42-), chloride (Cl-) or salinity. Turbidity and changes in the
flow rate (DO) have little or no influence on the measurement.
The sensors can a lso be used in methanol- and ethanol-water mixtures as well as in pure methanol and
ethanol.
We recommend avoiding other org anic solvents, such as acetone, chloroform or methylene chloride, which
may swell the sensor matrix rendering it unusable.
Response time
The response time to t90 (90% of full scale) in the gas phase for the BOS 3 oxygen sensor is less than 8
seconds.
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Optical isolation (Optional)
Optical isolated sensor tips are required in areas where the sensor is not placed in a flow-through fitting, if your
sample shows intrinsic fluorescence between 540 - 700 nm. Using optical isolated sensors exclude the impact
of colored samples and ambient light on meas urements. Furthermore, the optical isolation layer is applied to
eliminate strong ambient light, to improve chemical resi stance especially against oily samples as well as to
reduce bio-fouling on the sensor membrane.
Barben Analyzer offers additional optical isolation for all types of oxygen sensors.
Sensor Stability
The oxygen-sensitive membrane can withstand gamma-sterilization, sterilization by ethylene oxide, steam
autoclaving (140 °C, 1.5 atm), CIP conditions (cleaning-in-place, 5% NaOH, 90°C), as well as a 3% H2O2
(Hydrogen Peroxide) solution if this is required for inline cleaning.
The oxygen-sensitive material may be subject to photo-decomposition resultin g in a sign al drift. Photodecomposition takes place only du ring illumination of the sensor tip and depends on the intensity of the
excitation light.
Sensor Drift at 0 % air-saturation (0 ppb) recording 3600, 50000 and 100000 data points.
BOS2
BOS1
Drift per 3600 points
< 0.15 % air-sat.
< 1 ppb
Drift per 50000 points
< 0.15 % air-sat.
< 2 ppb
Drift per 100000 points
< 0.25 % air-sat.
< 3 ppb
The sensor should b e shielded from ambient light to obta in reliable data. A black overcoat, called optical
isolation is strongly recommended to reduce ambient light.
9.0 Housing for Oxygen in Natural Gas (DP-BOS3-L5-ST5-NOP)
Barben Analyzer fiber-optic oxygen sensors are based on 2 mm polymer optical fibers (POF).
Depending on the respective application, Barben Analyzer offers a set of different standard fitting
designs.
¼” Swagelok “Tee” Flow-Through Fitting
2 mm oxygen dipping probe mounts in
the Swagelok “Tee”
Of course, it is possible to build customer-specific designs. Please feel free to contact our service team to
find the best solution for your application.
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Trace Oxygen DP Probe
This oxygen sensor consists of a pol ymer optical fiber
(POF) with a polished distal tip which is coated with a
planar oxygen-sensitive foil.
The end of the pol ymer optical fiber is covered with a
high-grade steel tube, to protect both the sensor
material and the POF.
Usually, the fi ber is c oated with an optical isolated
sensor material in order to exclude ambient light from
the fiber tip.
Schematic drawing
POF
polymer optical fiber
(L = 2.5 m)
sensor spot
4 mm
steel tube
SMA connector
2 mm
Features
•
usable for process application
•
very rugged sensor with an excellent long-term stability (more than 100000 data points without drift)
•
sterilizable (H2O2, ethanol, ethylene oxide)
•
not autoclavable (POF does not stand autoclaving conditions (140 °C, 1.5 atm))
Ordering information
DP
L
Dipping Probe
ST
Length of optical fiber
L2.5: 2.5 m
L5: 5 m
OP
Optical Isolation
Y: with optical isolation
N: without optical isolation
Oxygen-Sensitive Coating Length of Steel tube
BOS1: 0 – 4.2 % oxygen
[cm]
BOS2: 0 – 50 % oxygen
BOS3: 0 – 1000 ppm
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Example
DP_BOS1-L2.5-ST10-YOP you will order a dipping probe (DP) coated with an optical isolated (YOP) trace oxygen sensor coating type
BOS1 (4 % oxygen). The standard cable length is 2.5 m (L2.5), the maximum length is 25 m. The length of the protection steel tube is
10 cm (ST10).
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10.0 Configuration of the 4401 Oxy-trace v4
10.1
Powering up the Instrument
Prior to powering up the 4401 Oxy refer to Diagram 1 (Page 8) for the connects for the power supply,
temperature sensor and oxygen sensor to the instrument.
Apply power and switch on the instrument by pressing the button on the right side:
Menu
Button
View
Button
Power
Button
The instrument will power up and begin to measure with the settings of the last readings.
By pressing the VIEW (second button from left) you can choose between two different display views:
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Oxygen
Units
Temperature
Status
Oxygen
Concentration
Sensor
Amplitude
Time of
Day Clock
Sampling
Rate
MAIN DISPLAY VIEW
Temperature
Status
Oxygen
Concentration
Error
Status
Phase
Angle
Sensor
Amplitude
Time of
Day
Sample
Rate
ALTERNATE DISPLAY VIEW
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10.2 Sensor Selection
Before starting the measurement you have to choose the correct sensor type. To set or change the sensor
type you have to press the ‘Menu’ button and afterwards the ‘Calibration’ button. In the Calibration Menu you
must scroll down to find the button ‘Sensor type’ and press enter to change the sensor. The following sensor
types are available:
BOS2: oxygen sensor measuring in both the liquid and gas phase;
Measurement range: 0-250 % air-saturation (0-50 % oxygen)
Limit of detection: 0.15 % air-saturation
BOS1: trace oxygen sensor measuring in both the liquid and gas phase;
Measurement range: 0-20 % air-saturation (0-5 % oxygen)
Limit of detection: 1 ppb dissolved oxygen
BOS3: trace oxygen sensor for gas phase measurements;
Measurement range: 0-200 ppm (1000 ppm Maximum) gaseous oxygen
Limit of detection: 0.5 ppm gaseous oxygen
10.3
Setting Measurement Parameters
Press the MENU button to enter the main menu:
Main Menu
Measurement
Calibration
Data Logging
Configuration
Diag & Test
Back
Enter
Use the up and down buttons (Under display) to select. Press MEASUREMENT to enter the Measurement
mode.
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Measurement
Sampling Rate
Temperature
Pressure
Signal Average
Oxygen Units
Sig. Intensity
Back
Enter
Use the up and down buttons to select. Press ENTER to change the respective settings:
Sampling rate: Press edit to change sampling rate and adjust the desired sampling rate. Use the up and down
buttons to select the respective unit and confirm by pressing enter
Temperature: Press edit to change the temperature compensation:
Pt 1000 the temperature compensation has a temperature sensor connected
Manual allows the manual input of a constant temperature; Use the up and down buttons to select the desired
temperature and confirm by pressing enter
External enables the input of a temperature signal by the analog inputs.
If analogue input chann els are already configured (see cha pter Analog Inputs) one can activate temperatu re
compensation by mean of externally imported value. Here the external channel 1 or 2 can be easily selected.
NOTE:
Before starting external temperature compensation it is useful to check the quality of electrical signals.
This can be done when the 4401 Oxy-trace v4 is NOT in “PC MODE”. By entering “Diag & Test/Analog
In” submenu the input voltage can be controlled directly on the front panel.
Pressure:
Disabled – please contact our service team for further information
Signal averaging:
Auto:
Press edit to change Signal Averaging
The instrument itself chooses the best settings (default setting)
Manual: The higher the running average, the longer the time (sampling time) used for averaging. The
higher the running average is set, the smoother the measurement signal
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Oxygen units: Press edit to change the oxygen unit displayed. Use the up and down buttons to select the
respective unit and confirm by pressing enter
Sig. Intensity: Press edit to change the intensity of the signal LED. Please notice that your calibration is
not valid after changing this parameter! Use the + and – button to adjust and press SET to confirm the
settings. Values between 10 and 100 % are possible.
10.4
Data Logging
By default (delivery status) the data logger is turned off. In order to start data logging please go to MENU and
select “Data logging” and “Start”. To stop the recording please select “Data logging” and “Stop”. The data
logger status is available in “Data logging” and “Status” and shows several details such as starting time and
date, sampling rate, saved records and free memory space. The maximal possible recording time depends on
the selected sampling rate and is shown on the display after selecting ‘Start‘.
During the recording (Data-logger activated) you cannot access other functions from the main menu. It
is possible to turn off and restart the oxygen instrument again with Data-logger still ativated. The recording of
data will be continuing immediately after the restart.
Important! When you stop the logging function and restart it, the previous records will be overwritten!
Stored records can be uploaded with the supplied 4401TRACEv113 (or higher) software by clicking on the
’Data logger’ button. After choosing the folder for saving data (’file location’), you have to click the ’Scan’
button and the software will show the stored number of data and the estimated download time. The download
will be started automatically after confirming the shown details by clicking the ’Yes’ button.
1
2
All records will be stored as a txt-file including date, time, amplitude, phase, temperature and oxygen.
Note! Measurement logging function (storage in PC) is not equal to Data logger function (storage in
4401 Oxy–trace NG).
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20
10.5 Configuration Menu
In this menu you can set most of your instrument parameters
Configuration
Status
Analog Out
Analog In
Clock/Date
Display
Reset Config.
Enter
Back
Status: Displays the main settings of the instruments Press any button to turn back to the main menu
10.5.1 Analog out:
Here you can choose which data are exported via the analogue outputs. The 4401 Oxy-trace v4 device has
two voltage outputs (U1, U2) and two current output channels (I1, I2). The desired data sources (oxygen,
temperature, amplitude, phase) can be chosen via the dialog box. All four output channels work independent
on each other and are free programmable.
Analog Out: Select Output
Voltage U1
Voltage U2
Current I1
Current I2
20 mA/10V Value
Back
Enter
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21
Voltage U1/U2: Select the parameter you want to activate as a Voltage analog output for port 1 and port 2 by
using the arrow keys. The following output selections are possible:
-
Inactive
Oxygen
Temperature
Phase
Amplitude
Current I1/I2: Select the parameter you want to activate as a Current mA analog output for port 1 and port 2
by using the arrow keys. The following selections are possible:
-
Inactive
Oxygen
Temperature
Phase
Amplitude
20 mA/10 V value: Here you can program the correlation of the 10 V/20 mA value to the exported value.
i.e., 10 V can be set to 100 % air-saturation (20.95% v/v), then 1 V corresponds to 10% air-saturation
i.e., 10 V can be set to 200 ppm gaseous oxygen, then 1 V corresponds to 20 ppm
10.5.2 Analog In:
Here you can choose which data is imported via the analog inputs. The
4401 Oxy-trace v4 device has two voltage input channels. The desired data sources temperature, pressure
(*optional) can be chosen via the dialog box.
The purpose of input channels is to compensate the oxygen value with externally measured temperature or
pressure. It is useful for a measurement set-up which has originally integrated temperature and/or pressure
sensor. The user has a possibility to export the analog data from external sensor into 4401 Oxy-trace v4 via
input channels. In order to initialize the input channels correctly, a proper measurement range must be set.
Once set, the input voltage is used for oxygen calculation correction.
Note 1: “Higher value” is the input voltage upper limit, and is equal to 10V for 4401 Oxy-trace v4. I.E.: If the
input signal of 10V corresponds to temperature of 60°C, one should set the value in the higher value
control window to 60.
Note 2: “Lower value” is the input voltage lower limit, and is equal to 0V for 4401 Oxy-trace v4. I.E.: If the input
signal of 0V corresponds to temperature of 10°C, one should set the value in the lower value control
window to 10.
Example 1: Using the values given in note 1 and 2, the temperature correction upon the input voltage is:
By input voltage = 5V, the imported temperature will be 35°C
By input voltage = 7.5V, the imported temperature will be 47.5°C
Example 2: Suppose that input voltage of 0V Ù 500hPa, and 10V Ù 2000 hPa.
By input voltage = 3,5V, the imported pressure will be 1025 hPa
By input voltage = 5V, the imported pressure will be 1250 hPa
By input voltage = 7,5V, the imported pressure will be 1625 hPa
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Clock/Date: Use + and next button to adjust clock and date and confirm with SET
Display: Changes the b acklight illumination of the display – Auto swit ches on th e illumination after pressi ng
any button and switches it of after a few seconds again.
Reset configuration: Sets all parameters defined in this sub menu to default
10.6 Diagnostics and Test
This menu allows you to test the analog out and in ports
Dianostics and Test
System
Outputs
Inputs
Back
Enter
System: Displays the most important information of the instrument. Press any key to return to the main menu
Outputs: Choose the channel you would like to test with up and down buttons and confirm with enter. Adjust
the test output value and check the value with your external data logger or voltmeter.
Inputs: Choose the channel you would like to test with up and down buttons and confirm with enter. The actual
reading of the channel is displayed based on the input value.
11.0
CALIBRATION:
11.1
Calibration
The 4401 Oxy NG has been pre-programmed for the BOS 3 sensor (0 – 1000 ppm), if another measurement
range above 1000 ppm is required you have to choose the correct sensor type (BOS1; 20 ppm to 4.2% v/v or
BOS2; 50 ppm to 50% v/v). To change the sensor type you have to press the ‘Menu’ button and afterwards the
‘Calibration’ button. In the Calibration Menu you will find the selection “Sensor type” which you have to press
to change the sensor.
Press Status to display the settings of your last calibration.
Press any button to return to the main menu
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23
Press Calibrate to enter into the calibration menu and choose the calibration mode:
a) Temperature ON: Calibration with the actual temperature reading (either Pt1000, external or manual
which is defined under Measurement – Temperature).
b) Temperature OFF: Calibration is completed without a temperature sensor, but with manual input.
c) Manual: Manual input of phase and temperature values
11.2
•
Calibration of the BOS3 oxygen sensor with Temperature compensation
Calibration with temperature compensation
1)
To calibrate the trace oxygen sensor with temperature compensation adjust sensor type BOS3 in the
calibration menu under ‘sensor type’
2) Select in the ‘Calibrate’ menu the button ‘temperature on’
3) Adjust the atmospheric pressure and confirm it by pressing the ‘Set’ button
4) Adjust the concentration of the second calibration gas to 100 ppm (Calibration can be in the range
between 10 and 300 ppm) and confirm it by pressing the ‘Set’ button
5) Connect the nitrogen (99.999%) calibration test gas to the sensor and turn on the regulator (1.5 LPM).
Please ensure, not to create an overpressure and that no traces of oxygen can diffuse into your
measuring system.
6) Wait about 3 minutes until the phase angle and temperature are constant (the variation of the phase angle
and the temperature should be smaller than ± 0.1° and ± 0.1°C) and press the ‘Store’ button.
7) Turn off the Nitrogen test gas and disconnect from the sensor. Reconnect the “Span” calibration test gas
(100 ppm oxygen) and turn on the 1.5 LPM regulator to start the second calibration point. Please ensure,
not to create an overpressure or to contaminate your calibration chamber with air.
8) Wait about 3 minutes until the phase angle and temperature are constant (the variation of the phase angle
and the temperature should be smaller than ± 0.1° and ± 0.1°C) and press the ‘Store’ button.
9) Now, calibration is complete. Turn off the regulator and remove the test gas from the sensor, rotate your
valve to the sample position and begin you online measurement.
10) Press the “Menu” button to return to the main display to view your gas readings.
11.3
•
1)
2)
3)
4)
5)
6)
7)
Calibration of the BOS3 oxygen sensor without Temperature compensation
Calibration without temperature compensation
To calibrate the trace oxygen sensor without temperature compensation adjust sensor type BOS3 in the
calibration menu under ‘sensor type’;
Press in the ‘Calibrate’ menu the button ‘temperature off’;
Adjust the temperature of the calibration standards and confirm it by pressing the ‘Set’ button;
Adjust the atmospheric pressure and confirm it by pressing the ‘Set’ button;
Adjust the concentration of the second calibration gas in ppm (optimally in the range between 10 and 300
ppm) and confirm it by pressing the ‘Set’ button
Connect the nitrogen (99.999%) calibration test gas to the sensor and turn on the regulator (1.5 LPM).
Please ensure, not to create an overpressure and that no traces of oxygen can diffuse into your
measuring system.
Wait about 3 minutes until the phase angle and temperature are constant (the variation of the phase angle
should be smaller than ± 0.1°) and press the ‘Store’ button.
23
24
8)
Turn off the Nitrogen test gas and disconnect from the sensor. Reconnect the “Span” calibration test gas
(100 ppm oxygen) and turn on the 1.5 LPM regulator to start the second calibration point.
Please ensure, not to create an overpressure or to contaminate your calibration chamber with air.
9) Wait about 3 minutes until the phase angle and temperature are constant (the variation of the phase angle
should be smaller than ± 0.1°) and press the ‘Store’ button.
10) Now, calibration is complete. Turn off the regulator and remove the test gas from the sensor, rotate your
valve to the sample position and begin you online measurement.
Press the “Menu” button to return to the main display to view your gas readings
11.4
•
Calibration of the BOS3 oxygen sensor with Manual Temperature compensation
Manual Calibration
User-defined calibration should be applied, if you don't ha ve the possibility to adjust the second calibration
value via calibration test gas or if you don’t want to calibrate your sensor again. Barben Analyzers delivers an
inspection sheet with each oxygen s ensor where you c an find two calibration values, which you have to enter
in the user-defined calibration mode.
2) To calibrate the trace oxygen sensor with temperature compensation adjust sensor type BOS3 in the
calibration menu under ‘Sensor type’;
3) Press in the ‘Calibrate’ menu the button ‘Manual’;
4) Adjust the cal 0 phase angle delivered with the sensor inspection sheet;
5) Adjust the concentration of the second calibration gas in ppm (optimally in the range between 10 and
300 ppm) and confirm it by pressing the ‘Set’ button;
6) Adjust the second calibration phase angle delivered with the sensor inspection sheet;
7) Adjust the temperature for the cal0 calibration value and confirm it by pressing the ‘Set’ button;
8) Adjust the temperature for the second calibration value and confirm it by pressing the ‘Set’ button;
9) To finish the manual calibration, adjust the atmospheric pressure and confirm it by pressing the ‘Set’
button
12.0
Description of the 4401 Oxy-trace NG PC Software
This software is compatible with Windows 98/2000/Millenium/NT4.0/XP.
12.1 Software Installation and Starting the Instrument
1.
2.
3.
4.
Insert the supplied disc/CD into the respective drive. Copy the software file (*.exe) onto your hard disk.
Additionally, you may create a link (Icon) on your desktop.
Connect the 4401 Oxy-trace v4 via the supplied serial cable to a serial port of your computer. Tighten the
cable with the screws on your computer and connect the cable wires pins: (22 ground; 23 TxD; 24 RxD).
Apply power to the 4401 Oxy-trace v4
Please close all other applications as they may interfere with the software. Start the software with a double
click. The following information window appears:
24
25
5.
If the right com port is adjusted this information window disappears within a few seconds. If the wrong com
port is adjusted you are asked to set the right com port:
With a left mouse click onto ‘com port’ you are able to set the right com port. Please confirm your selection
by clicking the ‘OK’ button. The information window disappears if the right com port is adjusted.
12.2
Function and Description of the 4401 Oxy-trace v4 Program
The window shown below is displayed after starting the 4401 Oxy-trace v4 software:
The program has 4 main sections:
1. Menu bar
2. Graphical window
3. Status bar
4. Control bar, divided into numerical display, control buttons and warning lights.
menu
control
buttons
numerical
display
warning
lights
Graphical
window
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26
12.2.1 Menu Bar
File
Æ Exit
Charts
Æ Oxygen
Æ Zoom
Æ Phase
Æ Amplitude
Æ Temperature
Æ Clear Charts
Æ Dimensions
Print
Æ Charts
Display
Æ AutoScaleY1
Æ Undo Zoom
Settings
Æ Com Port
Æ Instrument Info
Æ analog output
Æ analog input
Æ LED Intensity
Î Sensor
BOS2
BOS1
BOS2
Æ Oxygen Unit
% air-saturation
% oxygen
hPa (mBar)
Torr
ppm / ppb
µmol/L
File
Exit
Closes the program.
Charts
The respective charts of the measurement can be displayed (√) or hidden
Oxygen:
Oxygen content in the chosen unit
Phase:
Phase angle, the raw data
Amplitude:
The magnitude of the sensor signal
Temperature:
The measured temperature
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27
12.2.2 Display
Zoom:
AutoScaleY1 is the default setting. AutoScaleY1 means that the y-axis is scaled automatically.
Undo Zoom: The original display is recovered; see also graphical display
Clear Charts: The graphs shown on the display is cleared.
Dimensions:
You can adjust the number of
measurements points on the x-axis
shown in the display (maximum
number of points are 5000)
Furthermore, you can adjust the
minimum and the maximum of the yaxis.
The AutoScaleY1 function is switched
off.
Print
Charts: The charts shown in the display can be printed
Settings
•
ComPort
The serial comport (com1 – com2 0) for the serial interface (RS 232) c an be chosen in this window. COM 1 is
the default setting. If you choose the wrong Com port, the information window ‘Connect the instrument to the
PC and choose the right com-port’ will appear and you must select the correct com port.
•
Instrument Info:
Here you can find the version of the software and additional important settings of the instrument. If you ha ve a
problem with the 4401 Oxy-trace v4 oxygen meter, please contact our service team and have the software and
instrument information ready for assistance in trouble shooting.
To change back to the graphical window click the ‘Measure Chart’ button.
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28
12.2.3 Instrument Information
Software Information
Barben Analyzer Technology LLC
5200 Convair Drive
Carson City, Nevada 89706
Version 8
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29
12.3 LED-Intensity
With the current of the LED you can adjust the amount of light illuminating the sensor spot.
You can choose between an ‘ Auto Adjust’ of the LED where the 4401 Oxy-trace v4 adjusts the optimal LED
current itself, or you can select ‘Advanced’ where you can adjust the LED current yourself.
If you increase the LED current, the signal a mplitude increases, sin ce a higher light density illuminates the
sensor spot.
Auto Adjust:
To make the adjustment of the LED intensity automatically, just click the button ‘Start Auto Adjust’. Please
check that the oxygen sensor has been connected to the instrument.
The automatic adjustme nt of the LED intensity is completed when in the status win dow the me ssage ‘Auto
adjustment finished’ appears. Click the ‘Close’ button to confirm the settings.
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30
Advanced:
Click the ‘Advanced’ button to change the LED current manually. Values between 10 and 100 % are possible.
After clicking the ‘confirm’ button you can see the change of the amplitude in the window below.
Please note, that after changing the LED intensity you should re-calibrate the oxygen micro-sensor. A
warning window points you to re-calibrate the oxygen micro-sensor.
Please note:
By increasing the light intensity you increase the am plitude of the oxygen sens or. This lea ds to smoother
phase signals. However, increasing the light intensity can increase photo-bleaching, which decrease s the
shelf-life of your sensor.
• Sensor
Before starting the measurement you have to choose the correct sensor type. To change the sensor type you
have to press the ‘Sensor’ in the Menu point ‘Settings’. The following sensor types are available:
BOS2: oxygen sensor measuring in both the liquid and gas phase;
Measurement range: 0-250 % air-saturation (0-50 % oxygen)
Limit of detection: 50 ppm gas phase
BOS1: trace oxygen sensor measuring in both the liquid and gas phase;
Measurement range: 0-20 % air-saturation (0-5 % oxygen)
Limit of detection: 20 ppm gas phase
BOS3: trace oxygen sensor for gas phase measurements;
Measurement range: 0-200 ppm (maximum 0 – 1000 ppm) gaseous oxygen
Limit of detection: 0.5 ppm gaseous oxygen
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31
12.4 Oxygen Unit
Here you can adjust the desired oxygen unit. Tables and formulas for th e calculation of different concentration
scales are given in the appendix.
12.5 Analog output
Here you can choose what data is exported via the analog outputs. The 4401 Oxy-trace NG device has t wo
voltage outputs and two current output channels. The desir ed data sources (oxyge n, temperature, amplitude,
phase) can be chosen via the dialog box (see figure belo w). All four output channels work in dependent on
each other.
Oxygen (Max Scale): Here you can program the correlation of the 10 V/20 mA value to the exported value.
i.e., 10 V can be set to 500 % air-saturation, then 1 V corresponds to 50% air-saturation
i.e., 10 V can be set to 200 ppm gaseous oxygen, then 1 V corresponds to 20 ppm
To change the oxygen unit you have to go to settings, oxygen unit, and adjust the desired unit.
12.6 Analog input
Here you can choose what data is imported via the analog inputs. The 4401 Oxy-trace v4 device has two
voltage input channels. The desired data sources temperature, pressure (*option) can be chosen via the dialog
box (see figure below).
The purpose of input channels is t o compensate the oxyg en value with externally measured temperature or
pressure. It is useful for a measure ment set-up which has originally int egrated temperature and/or pressure
sensor. The user has a possibility to export anal ogue data from e xternal sensor into 4401 Oxy-t race via input
channels. In order to ini tialise the in put channels correctly, a proper measurement range must be set. On ce
set, the input voltage is used for oxygen calculation correction.
Note 1: “Higher value” is the input voltage upper limit, and is equal to 10V for 4401 Oxy-trace NG. I.E.: If the
input signal of 10V corresponds to temperature of 60°C, one should set the value in the higher value
control window to 60.
Note 2: “Lower value” is the input voltage lower limit, and is equal to 0V for 4401 Oxy-trace NG. I.E.: If the
input signal of 0V corresponds to temperature of 10°C, one should set the value in the lower value
control window to 10.
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32
Example 1:
Using the values given in note 1 and 2, the temperature correction upon the input voltage is:
By input voltage = 5V, the imported temperature will be 35°C
By input voltage = 7.5V, the imported temperature will be 47.5°C
Example 2:
Suppose that input voltage of 0V Ù 500hPa, and 10V Ù 2000 hPa.
By input voltage = 3.5V, the imported pressure will be 1025 hPa
By input voltage = 5V, the imported pressure will be 1250 hPa
By input voltage = 7,5V, the imported pressure will be 1625 hPa
12.7 Control Bar
Numerical display
The actual oxygen content in the chosen unit (here % air-saturation) is displayed in the oxygen window. Tables
and formulas for the calculation of different concentration scales are given in the appendix.
Temperature measurement:
The actual temperature value of the sample (in the
displayed in the temperature window.
case of temperature compensated measurements) i s
If measurement is performed without temperature compensation, the manual inserted temperature is displayed
and that temperature measurement is shown off–line.
32
33
Control buttons:
The way to start a measurement is
(A) Calibration of the mini-sensor with the Calibration Assistant
(B) Start Measurement with measurement Assistant
(C) Readout Data-logger
(A) Calibration:
The calibration assistant will open (see Calibration of Oxygen Sensors);
(B) Measurement:
By clicking ‘Start Measurement’ the measurement assistant opens to enter the measurement settings.
If you haven't performed sensor calibration yet the following window appears
If you want to measure with the last sensor calibration - yo u can find the ‘ date of the last calibration’ in the
window - click the ‘ Continue’ button. To obtain reliable re sults we stro ngly recommend performing a sensor
calibration before measurement by clicking the ‘New calibration’ item when connecting a new sensor.
Follow the instructions given in chapter 7 to calibrate the respective sensor.
To leave this menu, click the ‘Cancel’ button.
If you have already performed sensor calibration, the measuring assistant will open.
33
34
In this window you can choose the measurement settings:
In the ‘Sampling Rate’ window you can select the desired measurement mode with a drop-down menu.
By clicking the drop down menu you can choose from ‘1s’ to the ‘60 min’ mode where each hour a measuring
point is recorded.
Please note:
The sensor shelf life can be increased using a slower Sampling rate since the effect of photo-bleaching
is reduced. The illumination light is turned off between sampling. A further advantage using a higher
measuring mode is that huge amounts of data for long-time measurement can be avoided.
Oxygen Unit:
With this drop down menu, you can select the desired
oxygen unit. Tables and formulas for the calculation of
different concentration scales are given in a
supplemental catalog.
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35
12.7.2 Temperature Compensated Oxygen Measurements:
If you want to measure with temperature compensation, click the ’
on’ button. Please ensure that th e
temperature sensor Pt 1000 is connected to t he 4401 Oxy-trace v4, before you click the ‘ Start’ button to
continue. The window where you can enter the temperature manually is disabled.
If you want to measur e without t emperature compensation, choose the ’ off’ button. Please enter t he
temperature of your measurement sample manually. Click the ’Start’ button to start the measurement.
12.7.3 External Temperature Compensation:
If the analog input chan nels are already configured (see chapter Analog Inputs) one can activate tempera ture
compensation by mean of externally importing value. Here the external channel 1 or 2 can be easily selected.
NOTE:
Before starting external temperature compensation it is useful to check the quality of electrical
signals. This can be done when 4401 Oxy-trace NG is NOT in “PC MODE”. By entering
“Diag&Test/Analog In” submenu the input voltage can be controlled directly on the LCD.
Logging Setup:
To start the measurement without logging data click ‘Measure’ in the Logging setup and the ‘Start’ button.
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36
To store the data of you r measurement click in t he ‘Logging Setup’ the ‘Measure & Log’ item and click th e
button ‘Choose File’. Here you c an select th e location where you want to store the data. Choose as file
extension *.txt. Click the ’speichern’ (SAVE) button to confirm your settings.
You can enter a measurement description in the text field ‘File description’ which is stored in the ASCII File.
To start the measurement, click the ‘Start’ button. In the Information windows ’Sampling Rate’ you can find
the adjusted sampling rate. To be sure whether you perform a measurement with or without logging the data,
the ‘Logging Status’ window displays whether the actual measurement is stored to a file (logging) or not (no
logging);
Stopping the Measurement:
The measurement is ended by a left click on the ’stop’ button in the control bar.
12.7.4 Downloading the Data-logger Data
Look at chapter 6.5 for this function and for the download from the stored data in the 4401 oxy instrument!
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12.7.5 Warning Lights:
At the right bottom of t he window you can fin d the amplit ude, phase angle an d three warning light s. The
warning lights are explained below:
Amplitude:
Amplitude is too low, the sensor tip may be damaged or sensor cable may not
be connected
Yellow: Amplitude is critically low, replacement of the sensor is recommended
Green: amplitude level is good
Phase:
Red:
phase angle is out of limits
Green: phase angle is in the normal range
Red:
background light (e.g. direct sunlight, lamp) is too high. Decrease
of background light is required
Green: ratio of sensor signal to false light is acceptable
Ambient light: Red:
By clicking the ‘Display Raw Values’ button, the raw dat a of
phase angle and amplitude are displayed next to the warning
lights.
12.7.6 Graphical Display Window
The respective sensor signal is disp layed according to the selection of the 4 contro l buttons ox ygen, phase,
amplitude and temperature (menu chart). The oxygen content is displayed in the ch osen unit, the temperature
in °C. The raw values (the phase angle in degr ees and the sensor amplitude in mV) can also be displayed by
clicking the button ‘Display Raw values’.
Zoom Function:
1. Press the left mouse button and drag from left to right to enlarge a certain area of the graphical window. The
graphical window displays the selected data points and is not actualized with new data.
2. Press the le ft mouse button and drag from right to left to recover the original disp
lay, or click the ‘ Undo
Zoom’ button in the display menu under zoom.
Status Bar
sw1
sw2
sw3
sw4
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38
sw1: Displays the serial port which is used for communication of the 4401 Oxy-trace v4 device with the PC
sw2: Displays the file name in which the measurement data are stored. „No storage file selected“ is
displayed if no file was selected (no data storage).
sw3: Displays the start time of the measurement
sw4: Displays the actual time
13.0
Error Codes
The error value is binary coded. It means each bit corresponds to one specific error or warning. The summary
of error bits is given below:
bit 0 = ADC overflow
bit 1 = Ambient light
bit 2 = no oxygen sensor
bit 3 = no temperature sensor
bit 4 = current output 1 open loop error
bit 5 = current output 2 open loop error
bit 6 = overheat
bit 7 = system restart
Decoding example
If Error value received from a device is 10 then a following error has occurred:
Decimal 10 = Binary 00001010
Here bit1 Ù ambient light and bit3 Ù no temperature sensor are “1”. This error code would appear if there was
too much of ambient light (sun light illuminating the sensor) and the temperature sensor PT1000 is not
connected to the device.
Binary Table
0001 = 1
0010 = 2
0011 = 3
0100 = 4
0101 = 5
13.1
0110 = 6
0111 = 7
1000 = 8
1001 = 9
1010 = 10
1011 = 11
1100 = 12
1101 = 13
1110 = 14
1111 = 15
Saved Data Handling
In the heading of the A SCII file, you find the description of your measurement which you ha ve entered by
storing the file.
Below you find the ‘ instrument info’ containing the dat a of the complete calibration routine and so me
additional important settings of the instrument and firmware.
The ‘software info’ below contains the version number of t he 4401 Oxy-trace NG software, date and time of
the performed measurement. If there is a prob lem with the 4401 Oxy-t race NG oxygen meter, please contact
our service team and have the software and instrument information ready.
Below, you find the ‘measure mode settings’ containing the dynamic averaging, and the measuring mode.
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39
The following rows, separated by semicolons, list the measuring data. The first two rows contain the date and
time, the th ird the log-time in minu tes, the fourth the oxygen content in the cho sen unit. The raw data phase angle in [°] and the amplitude in [mV] - are stored in the fifth and sixth row, respectively. The seventh
row contains the temperature in °C measured by PT1000 temperature sensor. Raw data can be used for user
defined recalculations according to the formulas and tables listed in the appendix.
In the last row possible error codes are listed.
***** DESCRIPTION ***********
test measurement
***** INSTRUMENT INFO *******
IDENTIFICATION
PHIboard number : 12100911
PM number
: 20030082
LCD number
: 00062004
Serial number : FBX3LCD-0000-A24S006
MUX channel
: OFF - 01
PARAMETERS
Signal LED current: 020
Ref LED current : 075
Ref LED amplitude : 82440
Frequency
: 006
Sending interval : 0001
Averaging
:2
Internal temp : 29.6 C
SYSTEM SETTINGS
APL function
: ON
Temp compensation : AUTO
Voltage out
: ch1-OFF ch2-OFF
Current out
: ch1-OFF ch2-OFF
RS232 echo
: ON
Oxygen unit
: % air. sat.
CALIBRATION
Sensor type
:2
0%a.s.phase 1 : 58.19 at 021.7?C amp 078300
100.00%a.s.phase 2: 28.09 at 019.5?C amp 071700
Date (ddmmyy) : 030504
Pressure (mBar) : 1015
FIRMWARE
Code 3.010 (LCD) : 04/28/04, 14:13:28
Xilinx built
: 20/08/02 (MM/DD/YY)
Reset condition : SLEEP
***** SOFTWARE INFO *********
OxyView - LCDPST3-V1.01 03/2004
? by PreSens GmbH
03.05.2004
07:28:51
******MEASURE MODE SETTINGS**
1
Dynamic Aver
measure mod 1 sec
start time
07:28:46
amp
temp/?C
date(DD/MM/Ytime/hh:mm:s logtime/sec oxygen/% air phase/?
03.05.2004 07:28:51:02
0.02
2.51
56.31
83616
19.1
03.05.2004 07:28:51:79
0.036
2.45
56.36
83739
19.1
0.053
2.47
56.34
83615
19.1
03.05.2004 07:28:52:64
03.05.2004 07:28:53:64
0.07
2.44
56.37
83731
19.1
03.05.2004 07:28:54:64
0.086
2.47
56.34
83736
19.1
0.103
2.47
56.34
83715
19.1
03.05.2004 07:28:55:64
03.05.2004 07:28:56:65
0.12
2.45
56.36
83717
19.1
03.05.2004 07:28:57:65
0.136
2.45
56.36
83687
19.1
0.153
2.47
56.34
83712
19.1
03.05.2004 07:28:58:64
03.05.2004 07:28:59:64
0.17
2.44
56.37
83939
19.1
03.05.2004 07:29:00:64
0.186
2.4
56.4
84031
19.1
ErrorMessage
E0
E0
E0
E0
E0
E0
E0
E0
E0
E0
E0
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Concentrations units are calculated from % air-saturation by the software. Consequently, changes in the actual
atmospheric pressure have no effect on the partial pressure units (hPa, Torr) and concentration units (mg/L,
µmol/L) but the oxygen units % air-saturation and % oxygen-saturation have to be corrected f or air pressure
change.
13.2 Some Advice for Correct Measurement
Calibration of the sensor is recommended before each new application. If you don't want to recalibrate a
sensor, you can use the calibration values of your last measurement (see "User-Defined Calibration"). Ensure
that the temperature of the sample is known and is constant during measurement, if you do not use
temperature compensation. In the case of temperature-compensated measurements, the temperature sensor
Pt 100 should be positioned as close as possible to the oxygen mini-sensor to avoid temperature differences.
Please consult the special information on our Website www.BAT4ph.com or contact our service team if you are
in any doubt.
13.3 Signal drifts due to oxygen gradients
Please, keep in mind, that the sen sor only me asures the oxygen content near its surface. If the vessel or
pipeline is not moving it may cause an oxygen concentration gradient.
The formation of a bio-film during long term measurements or the accumulation of other sample components
like oil or solid substances may lead to an oxygen gradient.
13.4 Signal drifts due to temperature gradients
A further source of imprecise measurement is insu
fficient temperature compensation. If you use the
temperature compensation, ensure that no temp erature gradients exist between the oxygen sensor and the
temperature sensors. If you measure without temperatur e compensation, please b ear in mind, that the 44 01
Oxy-trace v4 only measures correctly, if the sample temperature is constant during measurement and the
temperature is the same as you entered in at the beginning of th e measurement. If the temperature is
measured with a precision of ± 0.2 °C, there is a variation in the measuring value at 100% air-saturation of ±0.7
% air-saturation. Please select the measurement with temperature compensation to minimi ze temperature
gradients.
13.5 Signal drift due to photo-decomposition
The oxygen-sensitive material may be subject to photo-decomposition resultin g in a sign al drift. Photodecomposition takes place only du ring illumination of the sensor tip and depends on the intensity of the
excitation light. Therefore, the excitation light should be minimized. Continuous illumination of a BOS2 oxygen
sensor over a period of 24 hours may lead to a phase drift of up to + 0. 4 % air-saturation measured at 100%
air-saturation at 20°C. However, this effect of photo-decomposition can even be minimized, by changing the
measuring mode to the 30 secon d or minute interval mode. In these modes, the software switches off the
excitation light after recording the data point and switches it on after the interval you have chosen.
Please use the interval method whenever it is possible to increase the operational life of the sensor.
Sensor Drift at 0 % air-saturation (0 ppb) recording 3600, 50000 and 100000 data points.
BOS2
BOS1
Drift per 3600 points
< 0.15 % air-sat.
< 1 ppb
Drift per 50000 points
< 0.15 % air-sat.
< 2 ppb
Drift per 100000 points
< 0.25 % air-sat.
< 3 ppb
Drift in % air-saturation at 100% air-saturation when illuminating the oxygen sensor BOS2 for 1, 12 and 24 hours in the
continuous mode.
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60
phase angle [°]
55
50
0 % air-saturation
45
40
35
30
25
100 % air-saturation
20
0
5
10
15
20
25
time [h]
Photo-decomposition test of BOS2, continuously illuminating the sensor membrane for 25 hours
13.6 Signal drift due to too much ambient light
A source o f error is t he detector overload d ue to too much
ambient light. A detecto r overload can be reco gnized with the
red shining warning light overload, which you can find at the
right bottom of the window.
Red:
Background light (i.e., d irect sunlight, lamp) is too high.
Decrease of false light by decreasing the light intensity
or darkening the sample is necessary.
Green: Ratio of sensor signal to false light is acceptable
Please note, that your measureme nt is not reliable if the warning light overload is shining re d. A detector
overload causes a decrease in both amplitude and phase angle.
13.7 Performance Verification
If you want to prove the performance during the past measurements, please check the calibration values b y
using your calibration test gases for “0” (UHP Nitrogen 99.999%) and the Span test gas (100 ppm oxygen/N2).
This can be completed by using a 3 way valve connected to your test gases enabling you to switch back and
forth from the different bottles. This will verify proper operation.
13.8 Correction for air-pressure variations
The atmospheric pressure of the calibration is needed to convert the oxygen unit % air-saturation in partial
pressure units (hPa, Torr) or concentrations units (mg/L µmol/L). The partial pressure and the oxygen
concentrations units are calculated from % air-saturation by the software. Consequently, changes in the actual
atmospheric pressure have no effect on the partial pressure units (hPa, Torr) and concentration units (mg/L,
µmol/L) but the oxygen units % air-saturation and % oxygen-saturation have to be corrected for air pressure
change.
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14.0
Technical Data
14.1
General Data
MODES
BOS2 oxygen sensor
range: 0 - 250 % air-saturation
BOS1 oxygen sensor
range: 0 - 20 % air-saturation
BOS3 oxygen sensor
range: 0 - 1000 ppm gaseous oxygen
Temperature
range: 0 - 50 °C
resolution: ± 0.5 °C
accuracy: ± 1° C
CALIBRATION PROCEDURE
BOS2 oxygen sensor
2-point calibration in a oxygen-free atmosphere and a second
calibration gas or ambient oxygen
BOS1 oxygen sensor
2-point calibration in a oxygen-free atmosphere and a second
calibration gas in the range between 1% and 2 % oxygen
BOS3 oxygen sensor
2-point calibration in a oxygen-free atmosphere and a second
calibration gas in the range between 10 and 100 ppm
gaseous oxygen
OPTICAL OUTPUT / INPUT
Optical connector
SMA compatible, 2 mm polymer optical fiber
Channels
1
Wavelength
505 nm
LCD Display
Resolution
128 x 64 pixels
Background Illumination
green (LEDs) – function programmable
Contrast
Automatic contrast control
ENVIRONMENTAL CONDITIONS
Operating temperature
Storage temperature
0 to +50ºC
-10 to +65ºC
Relative humidity:
up to 98% (NEMA 4)
DIMENSIONS
(D x W x H) 8” x 10” x 8” weight: 2,2 kg;
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Analog Output and Input channels
4401 Oxy-trace v4 – instrument version is supplied with a four independent, programmable 12 bit analog I/O
channels with galvanic isolation.
VOLTAGE OUTPUT
Channels
Pin Connection
Resolution
Programmable
Output range
Galvanic isolation
Update rate
Shortcut protection
2
Phoenix Connector Terminal Board
± 2,5mV (12bit)
Yes (oxygen, temperature, amplitude, phase)
0 - 10V (optional 0-5V) (Accuracy ± 10 mV)
Yes
same as digital data on RS232
Yes
CURRENT OUTPUT
Channels
Pin Connection
Resolution
Programmable
Output range
Update rate
Galvanic isolation
Open-loop alarm
2
Phoenix Connector Terminal Board
± 4μA (12bit)
Yes (oxygen, temperature, amplitude, phase)
4 to 20mA (option 0-20mA) (Accuracy ± 5 µA)
same as digital data on RS232
Yes
Yes
VOLTAGE INPUT
Channels
Pin Connection
Resolution
Programmable range
Input range
Programmable range
Galvanic isolation
2
Phoenix Connector Terminal Board
± 2,5mV (12bit)
Yes (temperature, pressure)
0 to 10V
Temperature: 0-150°C
Pressure: 500-2000hPa
Yes
Note:
Current Outputs are Current Sinking
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15.0 Technical Notes
POWER
4401 Oxy-trace is available in power from 80- 253 Vac or optional 9 – 24 Vdc. The 4401 Oxy ca n be powered
by a external battery via connect ion directly to the term inal board. AC power is wired directly to the po wer
supply
mounted to the back plate
.
ANALOG OUTPUTS
WARNING: The analog outputs are not protected against any input voltage! Any voltage applied to the analog
outputs can cause irreversible damage of the circuit.
RS232 INTERFACE
The unit uses crossed interface cable. The use of other than the serial cable provided with the instrument can
cause the unit’s malfunction.
OPTICAL OUTPUT
The SMA connector is high precision optical component. Pleas e keep it clean and dry. Always use the rubber
cap to close the output when not in use.
WATERPROOF ENCLOSURE
4401 Oxy-trace v4 enclosure meets NEMA 4 standards. However Make sure that all cable p lugs are installed
in the enclosure cable grips if not used (Analog I/O). Care should be taken not allow water to ingress into the
enclosure via the unuse d cable grip s to cause device failure. 4401 Oxy-trace v4 h as no intern al dew fuse !
APPROVALS
The 4401 Oxy –trace NG has been approved for use in Hazardous locations by FM/CSA for Class I, Division 2,
Groups A, B, C, and D
Operation Notes
OXYGEN MEASUREMENT
To achieve a highest accuracy 4401 Oxy-T RACE NG sho uld be warmed-up for app. 5 min before taking a
measurement. Please see the details of measurement process described in 4401 Oxy-trace v4 manual.
TEMPERATURE COMPENSATION
No other th en supplied temperature sensor should be u se with the u nit. The u se of any other temperature
sensor can affect the oxygen compensation and can even damage the oxygen meter.
Support: www.BAT4pH.com
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16.0 Enclosure Drawing
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17.0 Parts List:
BOS 3 Trace Sensor
DP-BOS3-L5-ST5-NOP-SSJ
Power Supply (110 Vac)
B5400-1001
Board Set
B3600-0004
Calibration Span Gas
100 ppm balance Nitrogen
UHP Nitrogen Zero Gas
99.999% Nitrogen
Model 715 Regulator
1.5 LPM fixed flow
PT 1000 Temp. Sensor
RBJB0TA040KB150
4401 Calibration Test Mnl
Process Control Document
4401 TDS
Test Data Sheet for Calibration Test
RJ 11 Modular Cable
B3907-0026
RJ 22 Modular Cable
B3907-0027
Ribbon Cable
B3907-0028
Cable Grip
B4954-0156
Terminal Board, Phoenix
B3304-0007
Enclosure (10x8x6) 316
B5023-0010
Trouble Shooting Guide
Indication
Cause
No Sensor Detected
Fiber Optic Cable Not Connected
No Sensor Detected
Oxygen Sensor Damaged
Oxygen readings incorrect
Incorrect Sensor Selected
Oxygen reading unstable
Oxygen Sensor
Temp Sensor Not Detected
PT 1000 Sensor
Out of Range
Oxygen Sensor
Phase Value too low
Oxygen Sensor out of range
Unable to read Oxygen
Current Loop Open
Solution
Make sure that the SMA connector is
connected properly to the connector
Check the amplitude (signal) of the
Sensor, it must be above 1500. Check flow
to make sure the line is not plugged
preventing the sample to the sensor.
Check to make sure you have the proper
sensor selected: BOS 1; 0 – 4.2%; BOS 2;
0 – 50%: BOS 3; 0 – 1000 ppm
Check for Low Amplitude (signal) to make
sure it is >1500, check for low flow or
unstable flow on sensor.
Check to make sure that you have a
temperature sensor connected.
Sensor flow is blocked, clear sample line
and reset flow to 1.5 lpm
Check for blockage on sample line and
reset flow to 1.5 lpm.
Connect current loop to recording or
monitoring device.
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19.0 Error Codes:
bit 0 = ADC overflow
bit 1 = Ambient light
bit 2 = no oxygen sensor
bit 3 = no temperature sensor
bit 4 = current output 1 open loop error
bit 5 = current output 2 open loop error
bit 6 = overheat
bit 7 = system restart
Decoding example
If Error value received from a device is 10 then a following error has occurred:
Decimal 10 = Binary 00001010
Here bit1 Ù ambient light and bit3 Ù no temperature sensor are “1”. This error code would appear if there was
too much of ambient light (sun light illuminating the sensor) and the temperature sensor PT1000 is not
connected to the device.
Binary Table
0001 = 1
0010 = 2
0011 = 3
0100 = 4
0101 = 5
0110 = 6
0111 = 7
1000 = 8
1001 = 9
1010 = 10
1011 = 11
1100 = 12
1101 = 13
1110 = 14
1111 = 15
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