Hanna Instruments | HI2040-01,HI2030-01,HI2020-01 | Owner Manual | Hanna Instruments HI2040-01,HI2030-01,HI2020-01 Owner Manual

Hanna Instruments HI2040-01,HI2030-01,HI2020-01 Owner Manual
pH•EC•DO
INSTRUCTION MANUAL
®
Dear
Customer,
Thank you for choosing a Hanna Instruments product.
Please read this instruction manual carefully before using the instrument.
This manual will provide you with the necessary information for correct use of
the instrument, as well as a precise idea of its versatility.
If you need additional technical information, do not hesitate to e‑mail us at
tech@hannainst.com or view our worldwide contact list at www.hannainst.com.
All rights are reserved. Reproduction in whole or in part is prohibited without the written consent
of the copyright owner, Hanna Instruments Inc., Woonsocket, Rhode Island, 02895, USA.
Product Diagram.........................................................................................................
Probe Diagram............................................................................................................
Keypad Function.........................................................................................................
Guide to Indicators......................................................................................................
5
5
6
6
6
8
9
10
TABLE OF CONTENTS
Included.............................................................................................................................
Safety Measures..................................................................................................................
Description..........................................................................................................................
Diagram.............................................................................................................................
Setup/Installation................................................................................................................ 11
Setting Up edge®.......................................................................................................
Electrode & Probe Connections......................................................................................
General Setup.............................................................................................................
Basic Mode.................................................................................................................
Logging Function........................................................................................................
Viewing Logged Data...................................................................................................
PC & Storage Interface.................................................................................................
11
14
15
17
17
20
23
Operational Guide................................................................................................................ 25
Basic vs Standard pH Mode.........................................................................................
pH Meter Configurations..............................................................................................
pH Calibration............................................................................................................
Calibration Messages...................................................................................................
pH GLP Information.....................................................................................................
pH Measurement........................................................................................................
Basic vs Standard EC Mode..........................................................................................
EC Meter Configuration................................................................................................
EC/TDS Calibration......................................................................................................
NaCl % Calibration.....................................................................................................
Calibration Messages...................................................................................................
EC/TDS GLP Information..............................................................................................
NaCl % GLP Information..............................................................................................
EC/TDS Measurements.................................................................................................
Salinity Measurements................................................................................................
Dissolved Oxygen Setup...............................................................................................
Dissolved Oxygen Probe Diagram..................................................................................
25
26
27
34
36
38
39
40
43
45
46
47
49
50
52
54
55
3
TABLE OF CONTENTS
Dissolved Oxygen Meter Configuration ......................................................................... 56
Dissolved Oxygen Calibration ...................................................................................... 58
Dissolved Oxygen Calibration Messages ....................................................................... 59
Dissolved Oxygen GLP Information ............................................................................... 59
Dissolved Oxygen Measurements ................................................................................. 61
Maintenance ...................................................................................................................... 62
pH Probe Maintenance ...............................................................................................
EC Probe Maintenance ...............................................................................................
Dissolved Oxygen Probe Maintenance ..........................................................................
Troubleshooting Guide ................................................................................................
62
64
65
67
Specifications ..................................................................................................................... 69
Accessories ........................................................................................................................ 72
4
Each instrument edge® (pH, EC, DO) is supplied with:
Bench cradle
Wall cradle
Electrode holder
USB cable
5 Vdc Power Adapter
Instruction Manual
Quality Certificate
INCLUDED
Remove the instrument from the packing material and examine it carefully to make sure that no
damage has occurred during shipping. If there is any damage, please contact your local Hanna
Instruments Office.
Model Specific Components include:
HI2020 (pH)
HI2030 (EC)
HI2040 (DO)
HI11310: Digital pH Electrode
with integrated temperature
sensor
HI763100: Digital 4 ring
HI764080: Digital polarographic
conductivity probe with integrated dissolved oxygen probe with
temperature sensor
integrated temperature sensor
pH Calibration Solution Kit
Conductivity Calibration Solution
Kit
HI7041S Electrolyte
for DO probe
2 DO membrane caps for
HI764080 DO probe
2 replacement O-Rings for
membrane caps
Electrode protective cap
Note: Save all packing material until you are sure that the instrument works correctly. Any
defective item must be returned in its original packing.
Operation of this instrument may cause interference to other electronic equipment, requiring the
operator to take steps to correct interference. Any variation introduced by the user to the supplied
equipment may degrade the instrument’s EMC performance.
To avoid damages or burns, do not put the instrument in microwave ovens. For your and the
instrument’s safety, do not use or store the instrument in hazardous environments.
SAFETY MEASURES
Before using this product, make sure that it is entirely suitable for your specific application and for
the environment in which it is used.
5
DESCRIPTION
edge® enables the user to make fast, accurate measurements of commonly measured laboratory
parameters using one of the Hanna Instruments edge® digital sensors for pH, Conductivity or
Dissolved Oxygen. Each digital sensors has a unique serial number and the parameter that is
measures is automatically identified by the meter. Once connected to the meter, the sensor(s) are
ready to measure their parameter along with temperature.
The user interface permits you to adapt edge® to your exact measurement requirements. The intuitive
design simplifies configuration, calibration, measurement, data logging and transfer of data to a USB
thumb drive or computer. edge® also offers a basic operation mode that streamlines measurement
configuration and is useful for many routine applications. (Every feature and measurement detail is
designed to give you an edge in measurement technology.)
PRODUCT DIAGRAM
• Sleek, clean, intuitive design
• Internal clock and date
• Adjustable resolution for pH and EC measurements
• Auto parameter recognition
• Dedicated GLP key
• GLP data included with logged data
• Basic mode for simplified operation
• Simplified data transfer to a PC
• Up to 8 hour battery life when used as a portable device
Side & Back view
6
DIAGRAM
DIAGRAM
edge® is versatile in many ways. The slim meter and probe can be used as a portable device (using
its rechargeable battery) or used in its bench or wall cradles (that also power the meter) as a linepowered laboratory instrument.
DIAGRAM
DIAGRAM
1.
2.
3.
4.
Liquid Crystal Display (LCD)
Capacitive Touch Keypad
3 mm jack input for edge® digital probes
Top mounted ON/OFF button
5.
6.
Micro USB device connection for power or
PC interface
Standard USB host connection for data
transfer to a USB thumb-drive
7
DIAGRAM
DIAGRAM
PROBE DIAGRAM
Probes
pH Electrode
•
•
•
•
•
•
•
8
EC Electrode
Probes process signal directly for noise free measurements
Auto sensor recognition
Store calibration specific data from the last calibration
Are built with materials suitable for use in chemical analysis
Have integrated temperature measurement
Incorporate a 3 mm jack termination
Unique serial ID in every probe for traceability
DO Electrode
DIAGRAM
KEYPAD FUNCTION
1. CAL/MODIFY - Used to enter and exit calibration mode. In SETUP, used to initiate changes of a
configuration setting.
2. GLP/CFM - Used to display GLP calibration information. In SETUP, used to confirm change made.
In calibration, used to accept calibration points.
3. RANGE/u - Used to select measurement range. In SETUP, used to move to right in pick list. In
log RCL, used to view GLP data for a data point.
4. SETUP/CLR - Used to enter/exit SETUP mode. During calibration, used to clear previous
calibration data. In log RCL, used to clear log records.
5. /
- Used to scroll through SETUP menu. Used to change selection when modifying a
parameter in SETUP.
6. RCL (Recall) - Used to view logged records or view % log memory used.
7. LOG - Used to log data by manual log on demand or manual log on stability or to
start/stop interval logging.
Note: You can increase/decrease the speed to change the value of a parameter.
Proceed as follows:
Press and hold down the or key, then slide the finger toward the double
apex to increase the speed that a value changes.
9
DIAGRAM
GUIDE TO INDICATORS
1.
2.
3.
4.
5.
6.
7.
8.
Mode tags
Confirm tag
USB connection status
pH electrode diagnostics
Probes symbol
Battery symbol
Arrow tags, displayed when they are
available
pH calibration buffers used
9. Third LCD line, message area
10. Labels
11. Second LCD line, temperature
measurement
12. Temperature units
13. Temp. Compensation status
14. Measurement line
15. Measurement units
16. Stability Indicator
The third line of the LCD (9) is a dedicated message line. During measurement the user may use
the
keys to select desired message. Options include date, time, calibration data, battery
charge or no message. If a measurement error or log status change occurs during measurement,
the third line will display a pertinent message.
10
1.
2.
3.
4.
5.
6.
Familiarize yourself with the design features of this unique meter.
Decide how the meter will be used and set up the wall or bench cradle in a clean area near
line power.
Turn edge ® on using the ON/OFF button located on the top of the meter.
Plug in the probe required for measurement.
SETUP the measurement parameters required for the measurement you will be making.
Calibrate the sensor/probe.
SETUP/INSTALLATION
SETTING UP edge ®
The main operating modes of edge ® are setup, calibration, measurement, data logging, and data
export. Follow this general outline of steps to get you started. The following topics are expanded upon
in the sections that follow in this manual.
You are now ready for measurements.
Bench Cradle Setup
Insert electrode holder arm into the post on the pivoting base.
Connect the probe connector to the socket located at the bottom of the instrument.
11
SETUP/INSTALLATION
Slide edge ® into the cradle while positioning the probe cable behind the cradle. Put the probe/sensor
into the electrode holder and secure cable in clips.
Connect the power adapter cable to the rear socket of the bench cradle. Connect the other end to the
power adapter and plug into line power. Verify the battery icon indicates charging.
Wall Cradle Setup
Choose suitable wall location. (Use 2.5 mm or US #3 bit). Fasten the wall cradle using the provided
screws. Snap cover over screw heads.
12
Connect the 3 mm probe jack to the socket located at the bottom of edge ®.
Slide edge ® into the wall cradle. Verify the battery icon indicates charging.
SETUP/INSTALLATION
Connect the power adapter cable to the bottom socket of the wall cradle. Connect the other end to the
power adapter and plug into line power.
Power Connection
Alternatively to using the cradle for power, edge ® can be powered by micro USB socket at the top.
Plug the 5 VDC adapter into the power supply socket or by connecting directly to a PC.
Note: edge ® is supplied with a rechargeable battery inside, which provides about 8 hours of
continuous use. Whenever edge ® is connected to the power adapter or to a PC, the battery
is charging.
13
SETUP/INSTALLATION
ELECTRODE & PROBE CONNECTIONS
Connect the 3 mm probe jack to the probe input located on the bottom of edge ®. Make sure the probe
is completely connected. If the probe is recognized, “CONNECTING” message is displayed along with
sensor model.
If the probe is not connected or not recognized, “NO PROBE” message is displayed.
14
Option
Description
*Only seen when
cable connection
between micro
USB and PC is
made.
Select if PC is being used for
charging battery (and meter
LOG ON EDGE or EXPORT
will be used for logging) or if
TO PC
Data will be exported to the PC.
Log
Select log type to be used from
3 types of logging:
Manual log on demand
Manual log on stability (3 types
of stability criteria available)
Timed interval lot logging
Choices
Default
Basic mode
(pH and EC)
LOG ON EDGE
Available
Manual Log
Stability Log: Fast,
Interval
Medium, Accurate;
(5 Sec)
Interval Log: Seconds:
5,10, 30;
Interval Log Minutes: 1, 2,
5, 15, 30, 60, 120, 180.
Manual log
or Stability
log: Medium
Set Calibration
Expiration
Warning
Meter will indicate “CAL
DUE” when set time in this
parameter has been exceeded.
Probe Specific
Parameters that are specific to a measurement type are inserted here in the SETUP list.
Set Date
Press CAL/MODIFY key to Set
current date, displayed in ISO
format.
Press GLP/CFM key to save
changes.
YYYY/MM/DD Date
Set date
Available
Set Time
Press CAL/MODIFY key to Set
current time, displayed in ISO
format.
Press GLP/CFM key to save
changes.
24 hr:MM:SS Time
Set time
Available
1, 2, 3, 4, 5, 6, 7 days
or OFF
7 days
SETUP/INSTALLATION
GENERAL SETUP
The following General Setup options are displayed regardless of the sensor being used. These settings
remain when switching to another probe type or when no probe is attached. Options are tabulated in
the table below with choices and default values. Options are accessed by pressing SETUP/CLR key.
Loop through the options by using the
keys. To modify a setting, press CAL/MODIFY key. The
option may be modified by using RANGE/u, and keys. Press GLP/CFM key to confirm the
change. To exit SETUP press SETUP/CLR key.
Not available
15
SETUP/INSTALLATION
Default
Basic mode
(pH and EC)
Set Auto Off
Used to save battery life by
automatically turning off when no key
5, 10, 30,
press is detected for time set and meter
60 Min or Off
is not in active logging or calibration
mode.
10 MIN
Available
Sound
If enabled, a short audible tone is
produced for key stroke or calibration
confirmation and a longer tone for
wrong key.
On or Off
On
Available
Temperature Unit
Select degree Celsius or Fahrenheit
scale for displayed and logged
temperatures.
ºC or ºF
ºC
Available
LCD Contrast
Permits modification of the display
contrast for various lighting conditions.
1 to 8
3
Available
On or Off
OFF
Available
Word scroll
messages or
letter scroll
messages
Letter scroll
messages
Available
Option
Description
Flash Format*
Only seen when log Permits formatting the flash drive.
errors are present.
Choices
Message Transition
User may choose how messages are
displayed on third LCD line of display.
Reset Config To
Default
Press the CAL/MODIFY key and GLP/CFM key (when prompted) to reset
parameters.
Available:
RESETS with
Basic Mode OFF.
Instrument
Firmware/Probe
Firmware
Displays firmware version of meter.
Using the RANGE/u key switches
to Probe firmware (if connected) and
diagnostic made for troubleshooting.
View only
Current
firmware
version.
Available
Meter ID/
Meter SN/
Probe SN
User ID and Serial Number of meter
and probe (if connected). Use
RANGE/u to change between the
three parameters.
Meter ID is user
selectable
0000/Serial
Number
Available
CSV file separator
Used to separate columns in the CSV
file..
Comma (,) or
Semicolon (;)
Comma
Available
Note: Options that are seen under special conditions only.
16
SETUP/INSTALLATION
BASIC MODE
edge® offers a basic operation mode that streamlines measurement configuration for pH and EC
measurements and is useful for many routine applications. Basic pH SETUP reduces parameter
selection to the basic set. The meter limits calibration to 5 standard pH buffers: pH 6.86, 7.01,
4.01, 9.18 and 10.01 buffers. All pH measurements will display, log and export with 0.01 pH
resolution. Interval logging is also eliminated. Manual and Manual medium stability log on demand
are still functional. pH CONDITION, RESPONSE graphs are not displayed, giving the display a
“Basic” measurement screen with just pH data and temperature. Basic EC reduces specific EC SETUP
parameters to 3. The meter defaults settings to common parameters and auto ranges measurements
automatically. The Basic EC meter may be used for conductivity and TDS measurements (salinity is
not available). Interval logging is also eliminated. Manual and Manual medium stability Log on
demand are still functional.
LOGGING FUNCTION
Note: If powering edge® through the micro USB connector to a PC, a SETUP option will require
the choice “LOG ON EDGE” or “EXPORT TO PC“.
1000 log records can be stored into edge® memory. This memory is shared between all
measurement types (pH, EC, DO) and all logging types (Manual, Manual Stability, Interval
logs).
The maximum number of records for an Interval lot is 600 records (provided log space is
available).
A record is a stored reading and a lot is a group of records.
Each time an Interval log is initiated, a new lot is created. The
maximum number of Interval lots that may be stored is 100. If a 101st
lot is attempted, “MAX LOTS” will be displayed. Some lots will need
to be deleted. The lot numbering is up to 999 and restarts if all lot
logs are deleted. All log on demand and stability log on demand are
stored in a single lot. The maximum number of records that may be stored in a Manual or Stability
lot is 200 records.
If the log memory is full during any logging session, the “LOG FULL“
message will be displayed on the third LCD line for a brief moment
and logging will cease. The display will return to the measurement
screen.
Logging type is configured in SETUP.
17
SETUP/INSTALLATION
Types of Logging
Interval logging: A continuous log recorded using a user-selected timed period.
(This is not available in Basic mode).
Manual log on demand: Readings are logged each time LOG key is pressed. All of the records
are stored in a single Manual lot for the measurement type. New records made on different days are
stored in the same Manual lot.
Manual Stability log on demand: A log on demand that is made each time LOG key is pressed
and the stability criteria is reached. Stability criteria may be set to Fast, Medium or Accurate settings.
In Setup mode, choose log parameter, press CAL/MODIFY key then use the RANGE/u key to select
between Interval, Manual, or Stability. When Interval is displayed, use the and keys to select
the setting for the timed interval. When Stability is displayed, use the and keys to select the
measurement stability setting.
A complete set of GLP information including date, time, range selection, temperature reading,
calibration information and probe serial number is stored with each log made.
Interval Logging
Select Interval and sampling period in the SETUP menu (Not available in Basic mode). To start
Interval logging, press the LOG key while the instrument is in measurement mode.
A “PLEASE WAIT” message will be displayed followed by the number of
free spaces. During active interval logging, lot information is displayed
on the third LCD line. The line indicates in which lot the data will be
placed and keeps track of the number of logged records taken. The
“LOG“ tag is on continuously during active logging.
Pressing RANGE/u during an interval log will display the number of
logs available.
Pressing the LOG key again will stop the Interval logging session. The
“LOG STOPPED“ message will be displayed for a few seconds.
If a sensor failure occurs during interval logging, the message “OUT OF
SPEC.” will alternate with logging information.
18
The “LOG” tag will be displayed on all 3 screens.
“PLEASE WAIT”
“SAVED” with the log record number
“FREE” with the number of free spaces available
SETUP/INSTALLATION
Manual Logging
Select Manual in the SETUP menu. To initiate a Manual log, press the
LOG key while the instrument is in measurement mode. The “PLEASE
WAIT” screen will be displayed briefly followed by a screen indicating
the measurement has been saved and then a screen indicating the log
record number.
Stability Logging
Select Stability and choose measurement stability criteria in the SETUP
menu. Only Stability Medium is available in Basic mode. To initiate the
Stability log, press the LOG key while the instrument is in measurement
mode.
The “PLEASE WAIT” screen will be displayed briefly followed by a screen
showing the stability tag, “LOG” tag and a “WAITING” message. The
log can be stopped while the “WAITING” message is displayed by
pressing LOG key again.
When the stability selected criteria has been met, a “SAVED” message
will be displayed followed by a screen indicating how much log space is
available. The “LOG” tag will be displayed on all 4 screens.
“PLEASE WAIT”
“WAITING”
“SAVED” with the log record number
“FREE” with the number of free spaces available
19
SETUP/INSTALLATION
VIEWING LOGGED DATA
All log records stored on edge® may be viewed on the meter by pressing the RCL key. The log records
are grouped according to measurement (pH, EC, DO).
The parameter displayed first is based on the probe/sensor connected.
The display also indicates the percentage of log memory used. Press
GLP/CFM key to display those logs.
If no sensor or probe is connected, use the RANGE/u key to select the
desired measurement type. Press GLP/CFM key to display those logs.
Once a parameter is selected by pressing GLP/CFM key, use the
keys to chose the type of logging records to view.
Choices are:
• Manual log on demand lot,
• Manual log on stability lot,
• Individual Interval logging lots.
If no data was logged for the selected measurement range, the
instrument displays the following messages (ex. for pH range):
“NO MANUAL LOGS”
“NO STABILITY LOGS”
Press GLP/CFM key to enter inside lot information to view recorded data.
Use the
keys to toggle between different records.
Use RANGE/u to display GLP data including calibration information, date, time, etc.
Press SETUP/CLR key then GLP/CFM key when deleting records or lots.
Press RCL key to exit the logging type.
Press RCL key to exit the parameter selection screen.
Press RCL key to return to the measurement screen.
20
For Interval lots, the message “CLEAR”, followed by the selected lot will
be displayed with “CFM” tag blinking.
Press the
keys to select a different lot. Press GLP/CFM key. The
instrument will display “PLEASE WAIT”.
SETUP/INSTALLATION
Delete Logging Type/Lot
Press RCL key and select the parameter log.
Use the
keys to select the Manual/Stability records or Interval lots
to delete. Press SETUP/CLR key. The instrument will display “CLEAR
MANUAL” for Manual Records, “CLEAR STAB” for Stability Records.
“CLEAR DONE” is displayed for a few seconds after the selected Interval
lot is deleted.
Delete Records (Manual and Stability log on demand)
To delete individual records (Manual and Stability logs only), enter Manual (Stability) log by pressing
GLP/CFM key when Manual (Stability) is displayed. Use the
keys to select the record to be
deleted and then press SETUP/CLR key.
The instrument will display “CLEAR REC.“ and record number along with
“CFM” tag blinking.
Use the
keys to select another record if necessary.
Press GLP/CFM key. The instrument will display “PLEASE WAIT” and then “CLEAR DONE” message.
When individual logs are deleted within saved MANUAL or STABILITY logs, the logs will renumber,
filling in the deleted data but staying in chronological order.
21
SETUP/INSTALLATION
To delete all records of the MANUAL (STABILITY) log, proceed as described on page 21 for LOTS.
Select the Manual (Stability) lot and press SETUP/CLR key. The ”CLEAR”
message will be displayed along with ”MANUAL” or “STABILITY” and
“CFM” tag blinking on the LCD. Press the GLP/CFM key to confirm the
deleting of the selected lot (MANUAL or STABILITY) or all records. Press
SETUP/CLR key to exit without deleting.
The lot number is used to identify particular sets of data. The lot numbers are allocated successively
until 100, even if some lots were deleted. The total number of lots that can be saved is 100. If
some are deleted (for example 1-50), fifty additional logs may be stored. These will be numbered
101-150. The lots are allocated successively (provided available memory space) until 999 is
reached. After this, it is necessary to delete all the LOT logs to start over the numbering.
Delete All
All pH logs, (or all EC, all DO logs) can be deleted in a single clear. This function will delete all
MANUAL, STABILITY and INTERVAL logs for the measurement type selected.
Press the RCL key. The pH, EC, or DO type will be blinking. Use
RANGE/u to select desired measurement parameter log data to delete.
While the measurement type is blinking and message states “LOG
RECALL”, press SETUP/CLR key.
“CLEAR ALL” and measurement type will be displayed with “CFM” tag
blinking. Press GLP/CFM key.
“PLEASE WAIT” and the percent cleared will be displayed until
completed. The procedure can be repeated for the other measurement
modes.
Note: If SETUP/CLR key is pressed in error, press SETUP/CLR key
again to exit without deleting.
22
Connect USB flash drive to the USB port, located on the top of the
meter. Press the RCL key and select the parameter to view (pH, EC, or
DO). Press the GLP/CFM key. Select Manual, Stability, or interval lots
by using the
keys. Press the LOG key (not GLP/CFM key). The
“USB HOST” tag should come on.
SETUP/INSTALLATION
PC & STORAGE INTERFACE
Logged data on edge® can be transferred from the meter to a USB flash drive by using the log recall
function. The minimum requirement for the drive is USB 2.0. Select the pH, EC or DO record you wish
to export and follow the simple steps below.
“PLEASE WAIT” message appears followed by “EXPORT”.
Press GLP/CFM key to export the selected record or lot. If GLP/CFM
key is not pressed in 10 seconds, the USB host will become inactive.
The meter will display the percentage of export.
The export percentage should go to 100%. Remove USB flash drive.
If the selected file is already saved on the flash drive, edge® will
ask for confirmation of overwriting the existing file. The message
“OVERWRITE” and “CFM” tag will blink. Press GLP/CFM key for
overwriting the existing file or CAL to exit without exporting.
After exporting the display will return to the selected file. Press the RCL
key twice to return to measurements.
Note: Do not remove USB flash drive during an active export
transfer.
23
SETUP/INSTALLATION
Logged data on the edge® can be transferred from the meter to a PC by following these simple
directions. Suitable operating systems include Windows (XP minimum), OS X or Linux.
1.
2.
3.
4.
5.
6.
Connect edge® to the PC using the supplied micro USB cable.
Turn on edge®.
Press SETUP/CLR key and select “LOG ON EDGE”.
Press CAL/MODIFY key then use
keys to change to “EXPORT TO USB”.
Press GLP/CFM key and the USB/PC Tag is displayed.
Press SETUP/CLR key to exit.
The PC should detect the USB as a removable drive. Open the drive to view the stored files. Log
files are formatted as Comma separated values (*.CSV) and can be opened with any text editor or
spreadsheet program. (Note: Field separator may be set as comma or semicolon depending upon
region preferences, see Setup.)
Note: Western Europe (ISO-88859-1) character set and English language are suggested
settings. Other files may be visible depending upon computer settings. All files stored will
appear in this folder.
Adjust Font or column width appropriately. Adjust the decimal places if the pH was logged
with 0.001 resolution.
All conductivity measurements will be displayed as μS/cm.
Interval logs are designated as pH, EC or DO Lots. ie. PHLOT001, ECLOT002, DOLOT003.
The Manual Lots are PHLOTMAN, ECLOTMAN, and DOLOTMAN.
The Stability Lots are PHLOTSTA, ECLOTSTA, and DOLOTSTA. All stability logs, regardless of stability
setting, are located in the same stability file for that measurement.
Click on the desired log to view data.
Note: If “º C !” appears in log data, the electrode/probe was used beyond it’s operation
specifications and the data is not considered reliable.
If “º C !!” appears in log data, the temperature sensor within the probe or electrode is broken
and the device should be replaced. Logged data should not be considered reliable.
24
The “Standard” pH operation includes up to a 5-point buffer calibration, use of custom buffers,
choice of displaying 0.001 pH resolution, use of the full diagnostic features of Calibration Check™
(that includes buffers used, probe condition, response time and messages indicating a contaminated
buffer or pH sensor requiring maintenance during calibration). Additional Sensor Check™ indicators
are available if using HI11311 or HI12301 pH electrodes. These include a continuous diagnostic to
detect if the electrode is broken and at the time of calibration, a diagnostic to indicate the reference
junction has been compromised or fouled by sample contamination. The Standard pH operation
also includes full logging capability including Interval, Manual log on demand and Manual log on
stability.
“Basic” pH operation provides a simplified SETUP menu; there are no decisions to make regarding
the pH measurement itself. The meter will display 0.01 pH resolution and permit a 3-point buffer
calibration from the following pH buffers: pH 4.01, 6.86, 7.01, 9.18 or 10.01. Calibration Check™
and Sensor Check™ features are limited to messages during calibration. Calibration reminders are
also not available. The GLP will still provide offset, slope, buffers used and a calibration date. The
Basic pH operation includes Manual log on demand and Manual log on stability (medium setting).
OPERATIONAL GUIDE
BASIC VS STANDARD pH MODE
For optimum pH measurements, follow these steps:
1. Understand the benefits and features of Standard and Basic Operation.
2. Set up edge® meter by configuring preferences.
3. Calibration.
4. Measurement.
Note: When changing from Standard to Basic operation in SETUP, previous calibration data will
be cleared. A prompt will force the user to facilitate this.
Major differences between Standard and Basic modes are shown below.
Calibration
Diagnostics
Log types
Recommended pH electrodes:
Standard
5 points including 2 custom buffers
Cal Check™ Feature
Sensor Check™ Feature
Error messages
GLP
Manual Log on demand
Manual Log on stability
(Fast, Medium, Accurate)
Interval Logging
HI11310, HI12300
HI11311, HI12301
HI10530, HI10430
Basic*
3 points
Basic error messages
GLP basic
Manual Log on demand
Manual Log on stability
(Medium)
HI11310*
HI12300
* All Sensors work in this mode, but diagnostic and all buffers will not be available.
25
OPERATIONAL GUIDE
pH METER CONFIGURATIONS
edge’s pH meter operation is configured by using the SETUP/CLR key with a pH probe connected to
the meter. The parameter-specific options will be seen inserted into the menu. If Basic mode is “On”,
the pH parameter list will not be displayed. See Basic mode for a description of this operation before
choosing how to SETUP the meter.
Option
Basic Mode
Information
First Custom
Buffer
Second
Custom
Buffer
First
Calibration
Point
Resolution
Set Out Of
Calibration
Range
26
Description
When “On”, a limited set of
parameters and calibration
buffers are available for use.
Visual indication of buffers
used, Probe Condition and
Response times are determined
and displayed when calibration
uses pH 7.01 and 4.01 and/or
10.01 buffers.
When “On”, it permits the user
to enter a custom pH buffer
value to use during electrode
calibration.
When “On”, it permits the user
to enter a custom pH buffer
value to use during electrode
calibration.
Allows the user to choose how
the first point in calibration
will be made.
Allows the user to select
between 0.01 and 0.001 pH
resolution.
When set to “On”, a
measurement that is outside
the calibrated range (buffers
used) will trigger a warning
message.
Choices Default
Off or
On
Basic mode
Off
Available
Off or
On
On
Buffers used, probe
conditions, and
response times are not
displayed.
Off or
value
Off
Not Available
Off or
value
Off
Not Available
Not Available
(automatically uses
Offset).
0.01 or
Not Available
0.001 0.01 pH (automatically uses
pH
0.01 pH resolution).
Offset
Offset
or point
Off or
On
On
Not Available, No Error
messages displayed.
The instrument should be recalibrated whenever:
• High accuracy and sensor verification are required.
• The pH electrode is replaced.
• At least once a week.
• After testing aggressive chemicals.
• If ”CAL DUE” is displayed on the third LCD line.
OPERATIONAL GUIDE
pH CALIBRATION
Calibration in Standard Mode
pH operation in standard mode offers full function of edge®. This includes seven standard buffers and
two custom ones. Five pH buffers may be used for calibration.
Every time you calibrate the instrument use fresh buffers and perform electrode maintenance as
required. It is advised to choose calibration buffers that bracket the sample pH.
Preparation
Pour small quantities of the buffer solutions into clean beakers. If possible, use plastic to minimize
any EMC interferences. For accurate calibration and to minimize cross-contamination, use two
beakers for each buffer solution; one for rinsing the electrode and one for calibration. If you are
measuring in the acidic range, use pH 7.01 or 6.86 as the first buffer and pH 4.01 (or 3.00*) as the
second buffer. If you are measuring in the alkaline range, use pH 7.01 or 6.86 as first buffer and
pH 10.01 or 9.18 as the second buffer.
* pH 3.00 is only visible when using specific pH electrodes and will replace 4.01 pH buffer.
Procedure
Calibration can be performed using up to five calibration buffers. For accurate measurements, a
minimum of a three-point calibration is recommended. The calibration buffer can be selected from
the calibration buffer list that includes the custom buffers and the standard buffers:
pH 1.68, 4.01 (pH 3.00), 6.86, 7.01, 9.18, 10.01 and 12.45.
27
OPERATIONAL GUIDE
The custom buffers allow the user to calibrate in a buffer solution different from a standard one. Two
custom buffers can be set in SETUP menu. See page 29 for more information about using custom
buffers.
The instrument will automatically skip custom buffers which are in a ±0.2 pH window of an already
calibrated buffer.
Submerse the pH electrode approximately 3 cm (1¼”) into a buffer solution and stir gently. Press
CAL/MODIFY key to enter calibration.
The “CAL” tag will appear and the “7.01” buffer will be displayed on
the third LCD line.
If necessary, press the
keys to select a different buffer value. The
“ ” along with “STIR” tag will be displayed and “WAIT” will blink on
the LCD until the reading is stable.
When the reading is stable and close to the selected buffer, “CFM” tag
will blink. Press GLP/CFM key to confirm calibration.
After confirming the first point, the calibrated value will be displayed
on the first LCD line and the second expected buffer value on the third
LCD line (i.e. pH 4.01).
Rinse and submerse the pH electrode approximately 3 cm (1¼”) into the second buffer solution and
stir gently. If necessary, press the
keys to select a different buffer value.
The “ ” along with “STIR” tag will be displayed and “WAIT” will blink on the LCD until the reading
is stable.
When the reading is stable and close to the selected buffer, “CFM” tag will blink. Press GLP/CFM
key to confirm calibration.
28
After confirming the last desired buffer calibration points, press
CAL/MODIFY key (or if all five buffer values were calibrated) the
instrument will automatically display “SAVING” as it stores information.
It will then return to normal measurement mode.
Each time a buffer is confirmed, the new calibration data replaces the
old data for the corresponding buffer or for any buffer in the proximity
of ±0.2 pH. If current buffer has no previous data stored and the
calibration is not full (five buffers), the current buffer is added to the
existing calibration. If the existing calibration is full, the instrument
asks which buffer to replace.
OPERATIONAL GUIDE
Repeat procedure with additional pH buffers. A total of five pH buffers can be utilized.
Press the
keys to select another buffer to be replaced.
Press GLP/CFM key to confirm the buffer that will be replaced.
Press CAL/MODIFY key to leave calibration without replacing.
Note: If the replaced buffer is outside the ±0.2 pH window of the calibrated buffers, it is
possible to select this buffer during the next calibration.
Working With Custom Buffers
If a custom buffer was set in SETUP menu, it can be selected during calibration by pressing the
keys. The “C1” or “C2” tag will be displayed once selected.
Press RANGE/u key if you want to modify the custom buffer value.
The buffer value will start blinking.
Use the
keys to change the buffer value. After 5 seconds, the
buffer value is updated. Press RANGE/u key if you want to change
it again.
29
OPERATIONAL GUIDE
Note: Custom buffer values can be adjusted ±1.00 pH around the set value during calibration.
When a custom buffer is displayed, the “C1” or “C2” tag is displayed.
First Calibration Point
When performing a new calibration, or adding to an existing one, the user has a choice of how the
first new calibration point will be treated in reference to the existing calibration point. This is selected
in SETUP by the option FIRST CALIBRATION POINT. The two SETUP selectable options are “POINT”
or “OFFSET”.
Point: A buffer value can be recalibrated and added to the previous calibration set. The electrode
slope of the other calibration points will be reevaluated with the recalibrated buffer value.
Offset: The new buffer calibration point can create a constant offset to all existing pH calibration data
(existing calibration must have a minimum of two pH buffers).
Recalibrating a pH sensor or adding to an existing calibration is simple and follows the PROCEDURE
outlined on page 27.
Press CAL/MODIFY key. Place sensor in desired buffer and select buffer from choices. When sensor
has equilibrated, the “CFM” tag will turn on and blink. Press the GLP/CFM key.
Press CAL/MODIFY key to escape the calibration. Alternately continue calibrating in additional
buffers. The latest calibration point will be added to the existing data. GLP will reflect the latest
calibration data. Older calibration buffers will be seen as blinking buffers.
Note: Each time a buffer is confirmed, the new calibration data
replaces the old data for the corresponding buffer or for any
buffer in the proximity of ±0.2 pH. If the current buffer has
no previous data stored and the calibration has not used five
buffers, the current buffer is added to the existing calibration. If
the existing calibration is full, the instrument asks which buffer to replace.
When using Standard mode, the user can choose if they want the display to show the
CONDITION and RESPONSE gauges on the display. These are part of the Cal Check™ system
and are selected in SETUP by the option INFORMATION. The choice is ON or OFF.
30
The condition gauge shows the electrode’s condition that is based on the offset and slope
characteristics of the pH electrode at the time of calibration. The response gauge is a function of the
stabilization time between the first and second calibration buffers, when calibration is performed
between a pair of pH 4.01, 7.01 or 10.01 buffers. These gauges reflect the electrode’s performance
and should be expected to slowly decrease over the life of the electrode .
OPERATIONAL GUIDE
Electrode Condition and Electrode Response Time
edge® pH Calibration Check™ feature will assess electrode condition and response time during each
calibration and display it for the rest of the day.
If the instrument is not calibrated the calibration history has been deleted, or it has been calibrated
only at one point, the electrode condition and the electrode response gauges will be empty.
For a continuous display of the electrode’s condition and response, daily calibration is necessary. This
information can also be viewed in the GLP data.
Junction Condition (HI11311 and HI12301 Only)
edge’s pH Sensor Check™ feature assess the health of the pH electrode’s reference junction during
each calibration. The junction gauge may be viewed directly in GLP but will also blink a warning on
the display if the junction is compromised (not 100%). Should this happen, the junction condition
will appear on the display with the junction blinking. The Junction Condition is a function of the
electrode’s reference impedance which should be kept low. If the reference junction becomes fouled
from a precipitate or coating, the impedance will rise and cause the pH measurement to drift. This
diagnostic feature serves as a warning to clean the sensor.
31
OPERATIONAL GUIDE
Calibration in Basic Mode
Procedure
Basic mode operation permits up to three-point buffer calibration.
For accurate measurements, at least a two-point calibration is recommended. However, a single
point calibration can also be used.
The calibration buffers can be selected from the calibration buffer list that includes the standard
buffers, pH 4.01, 6.86, 7.01, 9.18 and 10.01.
Three-Point Calibration
Submerse the pH electrode approximately 3 cm (1¼”) into a buffer solution and stir gently. Press
CAL/MODIFY key. The “CAL” tag will appear and the “7.01” buffer will be displayed on the third
LCD line. If necessary, press the
keys to select a different buffer
value.
The “ ” along with “STIR” tag will be displayed and “WAIT” will
blink on the LCD until the reading is stable.
When the reading is stable and close to the selected buffer, the “CFM”
tag will blink. Press GLP/CFM key to confirm calibration.
After confirming the first calibration point, the calibrated value will be
displayed on the first LCD line and the second expected buffer value on
the third LCD line. (i.e. pH 4.01)
Rinse and submerse the pH electrode approximately 3 cm (1¼”) into
the second buffer solution and stir gently.
If necessary, press the
keys to select a different buffer value.
The “ ” along with “STIR” tag will be displayed and “WAIT” will blink on the LCD until the reading
is stable. When the reading is stable and close to the selected buffer, the “CFM” tag will blink.
Press GLP/CFM key to confirm calibration.
The calibrated value is then displayed on the first LCD line and the third expected buffer value on
the third LCD line.
After the second calibration point is confirmed, rinse and submerse the pH electrode approximately
3 cm (1¼”) into the last buffer solution and stir gently.
If necessary, press the
keys to select a different buffer value. The “ ” along with “STIR” tag
will be displayed and “WAIT” will blink on the LCD until the reading is stable.
32
At the end of calibration the instrument displays “SAVING”, stores the calibration value and returns
to normal measurement mode.
The calibration sequence may be reduced to two buffer values or a single one. Press CAL/MODIFY
key to return to measurement mode after the desired number of buffers have been calibrated.
Note: When performing a new calibration or adding to an existing calibration the first
calibration point will be treated as an offset. See page 30 for details.
Press CAL/MODIFY key after the first or second calibration point is confirmed and the
instrument will store the calibration data. Then it will return to measurement mode.
If the value measured by the instrument is not close to the selected buffer, “WRONG BUFFER”
will blink. Check if the correct buffer has been used or selected.
If the buffer temperature exceeds the temperature limits of the buffer, “WRONG BUFFER
TEMPERATURE” will be displayed.
Press SETUP/CLR key after entering calibration to clear previous calibrations stored on probe.
“CLEAR CALIBRATION” message will be displayed. Press GLP/CFM key. The instrument will
return to measurement mode displaying the “CAL DUE” message.
If measured value differs more than expected “CHECK ELECTRODE CHECK BUFFER“ will be
displayed. Take appropriate action, cleaning the probe if necessary or refreshing the pH buffer.
OPERATIONAL GUIDE
When the reading is stable and close to the selected buffer, the “CFM” tag will blink.
Press GLP/CFM key to confirm calibration.
33
OPERATIONAL GUIDE
pH Buffer Temperature Dependence
Calibration buffers are affected by temperature. During calibration with standard pH buffers (not
Custom), the instrument will display the pH buffer value at 25 ºC, however, it will use the appropriate
value for that buffer at the temperature of the buffer for the calibration. Immediately after exiting
calibration, the buffer will read its value at the temperature of measurement.
TEMP
ºC
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
ºF
32
41
50
59
68
77
86
95
104
113
122
131
140
149
158
167
176
185
194
203
1.679
1.670
1.670
1.671
1.673
1.675
1.679
1.683
1.688
1.693
1.700
1.707
1.715
1.724
1.734
1.744
1.755
1.767
1.780
1.793
1.807
3.000
3.072
3.051
3.033
3.019
3.008
3.000
2.995
2.991
2.990
2.990
2.991
2.993
2.995
2.998
3.000
3.002
3.003
3.002
3.000
2.996
4.010
4.007
4.002
4.000
4.001
4.004
4.010
4.017
4.026
4.037
4.049
4.062
4.076
4.091
4.107
4.123
4.139
4.156
4.172
4.187
4.202
pH BUFFERS
6.862
7.010
6.982
7.130
6.949
7.098
6.921
7.070
6.897
7.046
6.878
7.027
6.862
7.010
6.851
6.998
6.842
6.989
6.837
6.983
6.834
6.979
6.834
6.978
6.836
6.979
6.839
6.982
6.844
6.987
6.850
6.993
6.857
7.001
6.865
7.010
6.873
7.019
6.880
7.029
6.888
7.040
9.177
9.459
9.391
9.328
9.273
9.222
9.177
9.137
9.108
9.069
9.040
9.014
8.990
8.969
8.948
8.929
8.910
8.891
8.871
8.851
8.829
10.010
10.316
10.245
10.180
10.118
10.062
10.010
9.962
9.919
9.881
9.847
9.817
9.793
9.773
9.757
9.746
9.740
9.738
9.740
9.748
9.759
12.454
13.379
13.178
12.985
12.799
12.621
12.450
12.286
12.128
11.978
11.834
11.697
11.566
11.442
11.323
11.211
11.104
11.003
10.908
10.819
10.734
CALIBRATION MESSAGES
The Calibration Check™ feature may flag diagnostic messages during a calibration. As electrode
aging is normally a slow process, substantial changes from previous calibrations are likely due to a
temporary problem with the probe or buffers that can be addressed easily. These messages are seen
in Standard and Basic modes.
Wrong Buffer
This message appears when the difference between the pH reading
and the value of the selected buffer is too great. If this error message is
displayed, check if you have selected the proper calibration buffer and
have poured the desired buffer.
34
OPERATIONAL GUIDE
Wrong Old Points Inconsistency
“WRONG OLD POINTS INCONSISTENCY” is displayed if the new
calibration differs significantly from the last value of that probe in that
buffer. In this case it may be best to clear the previous calibration and
attempt a new calibration with fresh buffers.
To clear calibration information, press CAL/MODIFY key then press
SETUP/CLR key. The “CLEAR CALIBRATION” message will be displayed.
Either press the GLP/CFM key and clear all calibration information or
press CAL/MODIFY key to exit. The probe may retain a single point
calibration if first point was accepted.
Once calibration information is cleared, the message “CAL DUE” will
be displayed
Clean Electrode
“CLEAN ELECTRODE” indicates poor electrode performance (offset out
of accepted window, or slope under the accepted lower limit). Often,
cleaning the probe will improve the pH electrodes response. See pH
Electrode Conditioning and Maintenance for details. Repeat calibration
after cleaning.
Check Electrode Check Buffer
“CHECK ELECTRODE CHECK BUFFER” appears when electrode slope
exceeds the highest accepted slope limit. You should check your probe
and use fresh buffer. Cleaning may also improve this response.
Bad Electrode
“BAD ELECTRODE” appears if the cleaning procedure performed as a result
of the above two messages is found to be unsuccessful. In this case it is
advised to replace the probe.
Wrong Buffer Temperature
“WRONG BUFFER TEMPERATURE” appears if the temperature of the buffer
is outside the defined buffer temperature range. The calibration buffers are
affected by temperature changes in a defined manner. During calibration,
the instrument will automatically calibrate to the pH value corresponding to
the measured temperature but display it to the value at 25 ºC. Immediately
after calibration, the buffer should read the value of the buffer at the temperature of measurement.
Note: Temperature limits will be reduced to actual sensor specifications.
35
OPERATIONAL GUIDE
Contaminated Buffer
“CONTAMINATED BUFFER” appears in order to alert that the buffer
could be contaminated. Refresh your buffer and continue the calibration
procedure.
Broken Temperature Sensor
If the temperature sensor should malfunction or break at any time, a
temperature of “25.0 ºC” will blink on the second LCD line and the
message “BROKEN TEMPERATURE SENSOR” will appear on the
third LCD line after leaving calibration. The calibration will have the
compensation at 25 ºC. Replace probe if this occurs.
Note: If this occurs during logging “25º C !” will appear in the CSV file.
pH GLP INFORMATION
Good Laboratory Practice (GLP) refers to a quality control function used to ensure uniformity of sensor
calibrations and measurements. The dedicated GLP/CFM key opens a file of the latest calibration
information. Use the
keys to scroll the stored information. This includes the buffers used,
temperature of the buffer, time and date of the last calibration, the sensor serial number and the
calculated offset and percent slope. This information is available in Basic and Standard Modes. This
information is also included with every data log. Newest calibration points report as a solid number,
older calibration data (that is still used) will be displayed blinking.
If calibration has not been performed, the instrument displays a blinking
“NO CAL” message.
After the calibration has been performed the instrument displays
offset and slope. The GLP slope is the average of the calibration
slopes; the percentage is referenced to the ideal slope value at 25 ºC.
Additionally, the condition and response indicators displayed are from
the last calibration.
Pressing the
keys, the last calibration date (yyyy.mm.dd) together
with the current reading is displayed.
36
If disabled, “EXPIRATION WARNING DISABLED” is displayed.
Or if enabled the number of days until the calibration alarm “CAL
DUE” will be displayed. (i.e. “CAL EXPIRES IN 2 DAYS”)
OPERATIONAL GUIDE
Note: If a custom buffer was used in calibration, the “C1” and “C2” tags will be displayed.
If only the one custom buffer is used in calibration, the tag will be “C1” and the value will
be displayed.
The number of days since the calibration expired. (i.e. “CAL EXPIRED
2 DAYS AGO”).
The probe serial number together with the current reading.
If a buffer is not from the last calibration, the buffer tag will be
displayed blinking.
In Standard Mode, Condition and Response gauges are visible on the day of calibration (See
Electrode Condition And Electrode Response Time page 31). If configured in SETUP, a countdown
message displays the number of days remaining until a new Calibration is due.
If using a HI11311 or HI12301 sensor, the glass impedance is
continuously monitored, updated and reported here and the Junction
Condition Gauge is fully visible.
37
OPERATIONAL GUIDE
pH MEASUREMENT
When an edge® pH probe is connected, the instrument will recognize it
and the cap removal message will be displayed along with “PH”. Press
any key to skip the message. The instrument will enter measurement
mode. Make sure the electrode has been calibrated before taking
measurements.
Rinse the pH sensor with water and sample if possible. Submerse the
electrode tip approximately 3 cm (1¼”) into the sample to be tested and
stir sample gently. Allow time for the electrode to stabilize.
The pH is displayed on the first LCD line and the temperature on the
second LCD line. Using the
keys, date, time, battery status and offset with slope can be
displayed on the third LCD line. If the reading is out of measurement range, the closest full scale
value will be displayed blinking on the first LCD line.
If measurements are taken successively in different samples, it is recommended to rinse the electrode
thoroughly with deionized water or tap water and then with some of the next sample to prevent crosscontamination. The pH reading is affected by temperature. The temperature effect is compensated
for using the temperature sensor inside the probe. The resulting measurement is the actual pH at the
temperature of measurement.
Error Messages During Measurement
If the pH or temperature exceeds the limits of the sensor, the message
“ELECTRODE OUT OF SPEC” will scroll on the third LCD line. The
temperature will continue to be displayed. If temperature exceeds the
meter specification of 120 ºC, then “120 ºC” will blink on the display.
If interval logging, the message “OUT OF SPEC.” will alternate with the
LOG specific message. In both these cases the Log file will indicate a “ºC!” next to the data.
In case the temperature sensor is damaged, “BROKEN TEMPERATURE
SENSOR” message will be displayed with “25.0 ºC” blinking on the
second LCD line. The Log file will indicate “ºC!!” next to the data.
38
Third Line Messages Displayed During Measurement
All the messages described in General Setup (page 15) are displayed
in pH range.
OPERATIONAL GUIDE
mV Reading Of The pH
The mV reading of the measured pH can be displayed on the LCD by
pressing the RANGE/u key.
Temperature Sensor Problem (if there is one)
Cal Due or Offset and Slope Value
Time
Date
Battery or Charge Status
Logging Messages
Out of Calibration Range
BASIC VS STANDARD EC MODE
Steps To Optimize EC Measurement
Follow these steps to optimize measurement using an EC probe:
1. Determine what measurement you wish to make with the EC probe. (See below)
2. Determine if Standard or Basic mode is best for your measurement.
3. Connect the Probe and configure your measurement using the SETUP menu.
4. Calibrate the EC probe.
5. Take measurements using an EC probe.
Measurements Available With The EC Probe
The four-ring EC probe may be used for 3 different measurement applications with edge®.
• It may be used for temperature compensated or absolute conductivity measurements (with
units of μS/cm or mS/cm).
• TDS (Total Dissolved Solids) measurements (a calculated measurement derived from the
ionized particles in a sample and the conductivity measurement). This has measurement units
of mg/L, ppm or g/L.
• Salinity (not available in basic mode): 3 different seawater salinity scales are supported;
Practical Salinity (PSU), the Natural Seawater Scales (g/L), and the NaCl %.
The RANGE/u key is used to change from conductivity to TDS (and to Salinity available in standard
mode only).
39
OPERATIONAL GUIDE
Basic Versus Standard EC Mode
Standard operation mode allows complete configuration of all options for the measurement of
Conductivity, TDS or Salinity measurements. Measurement data can be logged using Manual log on
demand, Manual Log on Stability or Interval logs. All logged data can be exported to a thumb drive
or PC. Basic operation mode is used for conductivity and TDS measurements. Common default values
are used for Cell Factor (C.F.), temperature compensation coefficient and TDS conversion factor.
Measurement units are user-selectable for TDS. The meter uses continuous auto-ranging to simplify
the measurement experience.
Standard
Basic
Measurement
Conductivity, TDS, Salinity
Conductivity, TDS
Set up Parameters
Fully selectable
Default values used
Log types
Manual Log on demand
Manual Log on stability (Fast,
Medium, Accurate)
Interval Logging
Manual Log on demand
Manual Log on stability
(Medium)
EC METER CONFIGURATION
EC (Electrolytic Conductivity) meter operation is configured using the SETUP/CLR key with an EC
probe connected to the meter. The EC-specific parameters will be seen inserted into the menu. If Basic
mode is “On”, the EC parameter list will be simplified, limiting the options the user can change.
See Basic mode for a description of this operation before choosing how to SETUP the meter.
40
Description
Basic Mode
Choices
Off or On
Temperature
Compensation
The user may select
Automatic Temperature
Compensation or No TC
to configure absolute
conductivity.
C.F (cm-1)
User may enter actual
Cell factor value Manual
calibration. (see page 42)
This parameter is related
to the solution being
measured at temperatures
other than 20 or 25 ºC. It
T.Coef. (%/ºC) is used to correct measured
conductivity to a reference
temperature by applying
a fixed factor for linear
compensation.
No TC or ATC
Default
Basic mode
Off
Available
ATC
Not available.
ATC is
automatically
used.
0.010 to 9.999 cm-1 1.000 cm-1
Not available.
Automatically
determined
during
calibration.
0.00 to 6.00 (%/ºC)
Note: Setting to
0.00 is the same
as using No TC.
1.90 (%/ºC)
Not available.
Close for natural
Automatically set
waters or salt
to 1.90%/ºC.
solutions.
T.Ref. (ºC)
The user may select either
20 ºC or 25 ºC
reference temperature
for temperature corrected
conductivity.
20 ºC or 25 ºC
25 ºC
Available
TDS
Conversion
Factor.
This factor is used to
mathematically convert
conductivity to a TDS
value.
0.40 to 0.80
0.50
Not Available.
Automatically set
to 0.50.
View T.Ref. or
T.Coef.
The user may choose
whether to display the
reference temperature
(T.Ref) or the Temperature
coefficient on the display
with the measurement.
T.Ref.(ºC) or
T.Coef.(%/ºC)
T.Ref (ºC)
T.Ref (ºC)
automatically
displayed during
measurement.
OPERATIONAL GUIDE
Option
41
OPERATIONAL GUIDE
Option
Description
Choices
EC Range
If AUTO is used, edge will
automatically find the correct
conductivity range and unit.
If a fixed value is used,
measurements made outside
the ranges are considered
Out of Range, but units will
remain fixed throughout the
measurement.
AUTO,
29.99 μS/cm,
299.9 μS/cm,
2999 μS/cm,
29.99 mS/cm,
200.0 mS/cm,
500.0 mS/cm
TDS Range
If AUTO is used, edge®
will automatically find the
correct TDS measurement
range and units. If a fixed
value is used, measurements
made outside the ranges
are considered Out of
Range, but units will
remain fixed throughout the
measurement.
TDS Unit
EC Salinity
Scale
Default
Basic mode
®
AUTO
Not available but
measurement
autoranges as
needed.
AUTO,
14.99 mg/L,
149.9 mg/L,
1499 mg/L,
14.99 g/L,
100.0 g/L,
400 g/L
AUTO
Not available but
measurement
autoranges as
needed.
Select units of measurement
for TDS measurement.
mg/L or ppm
ppm
Available to
select.
Three measurement scales
are available for salinity
measurement in Seawater.
(Practical Salinity Scale,
Percent Scale and Natural
Seawater Scale).
PSU, NaCl%,
g/L
NaCl%
Not available.
Cell Factor (cm-1) Manual Calibration
This option may be used to perform a manual calibration in a custom standard.
1. Rinse the probe with an aliquot of standard and shake off excess solution.
2. Place the probe in the standard. The sleeve holes must be covered with solution.
3. Press SETUP/CLR key and use the
keys to get to C.F. (cm-1)
4. Press CAL/MODIFY key.
5. Use the
keys to change C.F. (cm-1) until the display reads the Custom Standard value.
6. Press GLP/CFM key. The message “MANUAL CALIBRATION CLEARS PREVIOUS CALIBRATIONS”
42
Note: GLP will display “Manual” for a standard. Using this calibration technique will erase any
previous calibrations done in CAL. Log files will indicate “MANUAL” as standard.
User Selectable EC/TDS Range (Not Available In Basic Mode)
The EC and TDS measurements may be configured in SETUP as AUTO (meaning auto ranging, the
measurement automatically finds the correct conductivity or TDS unit and resolution), or it may be
configured with a user-selected measurement range and resolution (if you know ahead of time where
your samples will fall). If AUTO is selected, the meter will select the scale with the highest possible
resolution, but may change in the middle of a series of measurements changing units and displayed
resolution.
OPERATIONAL GUIDE
will be displayed on the third line LCD. “CAL” and “CFM” tags will blink.
Press GLP/CFM key to confirm the manual calibration.
Note: The selected range is only active during measurements. Auto ranging is used during
calibration. If a fixed range is selected and during measurement goes beyond the range limits,
the full scale value of that range will flash on the display. All log data in the CSV files will be
displayed in µS/cm.
EC/TDS CALIBRATION
General Guidelines
Calibrate the instrument frequently, especially if high accuracy is required.
The instrument should be recalibrated:
• Whenever the EC probe is replaced.
• At least once a week.
• After testing aggressive chemicals.
• If “CAL DUE” is displayed on the third LCD line.
Every time you calibrate the instrument use fresh standard and perform electrode maintenance as
required. It is recommended to choose a calibration standard that is close to the sample.
Preparation
Pour small quantities of the standard solutions into a beaker. If possible, use a plastic beaker to
minimize any EMC interferences. For accurate calibration and to minimize cross-contamination, use
two beakers for the standard solution; one for rinsing the probe and one for calibration.
43
OPERATIONAL GUIDE
Procedure
Select standard to be used for calibration. 0.00 μS (probe in air) may be used for an offset
calibration. This should be done first. Hanna Instruments Conductivity standards are available at
84 μS/cm, 1413 μS/cm, 5.00 mS/cm, 12.88 mS/cm, 80.0 mS/cm, 111.8 mS/cm and are used
for the cell factor calibration.
Rinse the probe with calibration solution or deionized water. Shake off excess solution. Submerse the
probe in the calibration solution. The sleeve holes must be completely submersed. If possible, center
the probe in the beaker away from the bottom or beaker walls.
Raise and lower the probe to refill the center cavity and tap the probe repeatedly to remove any air
bubbles that may be trapped inside the sleeve.
Press CAL/MODIFY key to enter calibration. The “CAL” tag and the
recognized standard value will appear on the third LCD line. If necessary,
press the
keys to select a different standard value. The “ “ along
with “STIR” tag will be displayed and “WAIT” will blink on the LCD until
the reading is stable.
When the reading is stable and close to the selected standard, “CFM”
tag will blink, the message “ SOL STD” and the value will be displayed.
Press GLP/CFM key to confirm calibration. The instrument displays
“SAVING”, stores the calibration values and returns to measurement
mode.
44
ºC
ºF
0
5
10
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
41
50
59
60.8
62.6
64.4
66.2
68
69.8
71.6
73.4
75.2
77
78.8
80.6
82.4
84.2
86
87.8
HI7030
HI8030
(μS/cm)
7150
8220
9330
10480
10720
10950
11190
11430
11670
11910
12150
12390
12640
12880
13130
13370
13620
13870
14120
14370
HI7031
HI8031
(μS/cm)
776
896
1020
1147
1173
1199
1225
1251
1278
1305
1332
1359
1386
1413
1440
1467
1494
1521
1548
1575
HI7033
HI8033
(μS/cm)
64
65
67
68
70
71
73
74
76
78
79
81
82
84
86
87
89
90
92
94
HI7034
HI8034
(μS/cm)
48300
53500
59600
65400
67200
68500
69800
71300
72400
74000
75200
76500
78300
80000
81300
83000
84900
86300
88200
90000
HI7035
HI8035
(μS/cm)
65400
74100
83200
92500
94400
96300
98200
100200
102100
104000
105900
107900
109800
111800
113800
115700
117700
119700
121800
123900
HI7039
HI8039
(μS/cm)
2760
3180
3615
4063
4155
4245
4337
4429
4523
4617
4711
4805
4902
5000
5096
5190
5286
5383
5479
5575
OPERATIONAL GUIDE
Conductivity vs Temperature Chart
The following table lists the temperature dependence of Hanna Instruments EC calibration standards.
edge® uses these values and their temperature coefficients during calibration.
NaCl % CALIBRATION
Preparation
Pour a small quantity of the calibration solution into a beaker. If possible, use a plastic beaker to
minimize any EMC interferences.
Before pressing CAL/MODIFY key verify in SETUP:
• Basic mode is off.
• Salinity Scale is set to NaCl%.
In measurement mode use the RANGE/u key to select the Salinity measurement. The NaCl% tag
will be on. NaCl calibration is a single point calibration at 100.0% NaCl. Use the HI7037 calibration
solution (sea water solution) as a 100% NaCl calibration solution.
45
OPERATIONAL GUIDE
Procedure
Rinse the probe with some of the HI7037 calibration solution or deionized water. Shake off excess
solution. Submerse the probe in the calibration solution. The sleeve holes must be completely
submersed. If possible, center the probe in the beaker away from the bottom or beaker walls. Raise
and lower the probe to refill the center cavity and tap the probe repeatedly to remove any air bubbles
that may be trapped inside the sleeve.
Press CAL/MODIFY key to enter calibration. The ” “, ”STIR” and
“CAL” tags will turn on and the first LCD line will display the percent
NaCl reading, the second LCD line will display the temperature and the
third LCD line will display ”WAIT” message blinking until the reading
is stable.
When the reading is stable and close to the standard, “CFM” tag will
blink and “SOLUTION STANDARD” message will be displayed.
Press GLP/CFM key to confirm calibration.
The instrument displays “SAVING”, stores the calibration values and returns to measurement mode.
Note: If a new EC calibration is performed, the NaCl calibration is automatically cleared. A new
NaCl calibration is required.
CALIBRATION MESSAGES
Wrong Standard
If the reading is too far from the expected value, the message “WRONG
STANDARD” will scroll. Calibration cannot be confirmed. In this case
check if the calibration solution has been used correctly or clean the
probe by following the instructions for EC PROBE MAINTENANCE (see
page 64).
46
EC/TDS GLP INFORMATION
GLP is a set of functions that allows storage and retrieval of data regarding the maintenance and status
of the electrode. The following information can be viewed on the third LCD line during measurement:
TEMPERATURE SENSOR problem (if there is one)
CAL DUE or CELL FACTOR
T.Coef. or T.Ref. (User selected)
TIME
DATE
RANGE
BATTERY or CHARGE STATUS
OPERATIONAL GUIDE
Wrong Standard Temperature
If the temperature is out of the 0.0 to 60.0 ºC range, “WRONG STANDARD
TEMPERATURE” message will be displayed and the temperature value
will blink.
To view more information, enter GLP mode by pressing GLP/CFM key.
EC calibration data is stored automatically after a successful calibration.
To view the EC calibration data, press GLP/CFM key when the instrument is in EC measurement
mode. The instrument will display the calibration standard and the temperature of the calibrated
standard. Use the
keys to scroll through the calibration data displayed on the third LCD line.
The cell factor in cm-1 determined from the calibration with the current
reading.
The calibration offset factor in μS/cm together with the current reading.
The Solution Standard and calibration temperature.
47
OPERATIONAL GUIDE
The temperature coefficient used during calibration with the current
reading.
The reference temperature together with the current reading.
The time (hh:mm:ss) of the last calibration together with the current
reading.
The date (yyyy.mm.dd) of the last calibration together with the current
reading.
Calibration Expiration status together with the current reading:
If disabled, “EXPIRATION WARNING DISABLED” is displayed.
If enabled, the number of days until the calibration alarm “CAL DUE”
will be displayed. (i.e. “CAL EXPIRES IN 2 DAYS”)
If enabled, the number of days since the calibration expired.
(I.E. “CAL EXPIRED 2 DAYS AGO”).
The serial number of the probe together with the current reading.
48
The cell factor in cm-1 determined from the calibration with the current
reading.
The salinity coefficient determined from the calibration together with the
current reading.
OPERATIONAL GUIDE
NaCl % GLP INFORMATION
NaCl % Calibration Data in GLP
To view the NaCl% calibration data, press GLP/CFM key when the instrument is in NaCl%
measurement mode. Use the
keys to scroll through the calibration data. The instrument will
display the calibration temperature and solution.
The Solution Standard together with the calibrated temperature.
The time (hh:mm:ss) of the last calibration together with the current
reading.
The date (yyyy.mm.dd) of the last calibration together with the current
reading.
Calibration Expiration status together with the current reading:
If disabled, “EXPIRATION WARNING DISABLED” is displayed.
If enabled, the number of days until the calibration alarm “CAL DUE”
will be displayed. (i.e. “CAL EXPIRES IN 2 DAYS”)
49
OPERATIONAL GUIDE
If enabled, the number of days since the calibration expired.
(I.E. “CAL EXPIRED 2 DAYS AGO”).
The serial number of the probe.
Note: Press GLP/CFM key at any moment and the instrument will return to measurement
mode.
EC/TDS MEASUREMENTS
The RANGE/u key will change measurement from conductivity to TDS to Salinity.
Conductivity Measurements
Connect the conductivity probe to the instrument and wait until probe parameters are loaded. When
an edge® probe is connected, the instrument will recognize it.
Verify if the probe has been calibrated. Suspend the probe into the solution to be tested. The sleeve
holes must be completely submersed. Tap the probe repeatedly to remove any air bubbles that may
be trapped inside the sleeve.
The conductivity value will be displayed on the first LCD line, the temperature on the second LCD line
and calibration or range specific information on the third LCD line.
To toggle between information displayed on the third LCD line, use
the
keys.
If the reading is out of range when the range is set to automatic, the fullscale value (200.0 mS/cm for ATC mode or 500.0 mS/cm for absolute
conductivity) will be displayed blinking.
Note: Temperature-compensation and absolute conductivity (NoTC)
are selected in the SETUP configuration.
50
No Temperature Compensation (No TC): The temperature value is displayed, but not taken into
account. When this option is selected, the “NoTC” tag will be displayed. The reading displayed on
the primary LCD is the uncompensated EC or TDS value.
Note: The default compensation mode is ATC.
The compensation is referenced to the selected reference temperature (see SETUP for details).
If temperature compensation is selected, measurements are compensated using the temperature
coefficient (default value 1.90 %/ºC, is recommended for natural water samples).
To change the temperature coefficient, enter the SETUP mode and select “T.Coef.(%/ºC)” (see
SETUP).
The current temperature coefficient can be viewed on the third LCD line by pressing the
keys
until it is displayed. The value is displayed along with Cell Factor (the factor that is used to convert the
measured conductance to conductivity, based on the geometry of the cell). If the temperature reading
is out of range, the closest full scale value will be displayed with “ºC” blinking on the second LCD line.
OPERATIONAL GUIDE
Automatic Temperature Compensation (ATC): The conductivity probe has a built-in temperature
sensor; the temperature value is used to automatically compensate the EC/TDS reading. When this
option is selected, “ATC” tag is displayed. A temperature coefficient for the sample must also be set.
Error Messages During Measurement
If the EC temperature exceeds the limit of the probe, the message “PROBE OUT OF SPEC” will scroll
on the third LCD line. The temperature will continue to be displayed blinking. If temperature exceeds
the meter specification of 120 ºC, then “120 ºC” will blink on the display. If interval logging, the
message “OUT OF SPEC.” will alternate with the Log specific messages in both of these cases. The
Log file will indicate a “ºC!” next to the data. In this case, the temperature sensor is damaged,
“BROKEN TEMPERATURE SENSOR” , “---” along with NoTC tag will
be displayed and the unit tag will blink on the LCD. If logging when
this occurs, the Log file will indicate “ºC!!” next to the data. Absolute
conductivity (NoTC) will be marked with an “A” in the CSV files and
dashes will appear in the temperature field.
TDS Measurements
Press the RANGE/u key. The instrument will switch to TDS measuring
range. The TDS reading will be displayed on the first LCD line and the
temperature reading on the second LCD line. If the reading is out of
range, the full-scale value (100.0 g/L for ATC mode or 400.0 g/L for
uncompensated TDS) will be displayed blinking along with a message on the display.
51
OPERATIONAL GUIDE
SALINITY MEASUREMENTS
Salinity Measurements (Not Available In Basic Mode)
Press the RANGE/u key twice to switch from conductivity to the configured Salinity scale. Verify the
desired scale is configured in SETUP. The meter supports three salinity scales: Practical Scale 1978,
Percent Scale %, and Natural Sea Water 1966, [g/L]. (Information on the 3 scales follows)
Note: These are for determining salinity as they relate to general oceanographic use.
Practical salinity and the Natural Seawater require a conductivity calibration.
NaCl % requires a calibration in HI7037 standard.
PSU - Practical Salinity Units
The practical salinity (S) of seawater relates the ratio of electrical conductivity of a normal
seawater sample at 15 ºC and 1 atmosphere to a potassium chloride solution (KCl) with a mass of
32.4356 g/Kg water at the same temperature and pressure.
Under these conditions the ratio is equal to 1, and S=35. The practical salinity scale may be applied
to values to through 42.00 PSU at temperatures between -2 to 35 ºC.
According to the definition, salinity of a sample in PSU (practical salinity units) is calculated using
the following formula:
RT - ratio of sample conductivity to standard conductivity at Temp =(T)
CT(sample) - uncompensated conductivity at T ºC;
C(35,15) =42.914 µS/cm - the corresponding conductivity of KCI solution containing a mass of
32.4356 g KCl/1 Kg solution
rT - Temperature compensation polynomial
a0 = 0.008
a1 = -0.1692
a2 = 25.3851
a3 = 14.0941
a4 = -7.0261
a5 = 2.7081
52
b0 = 0.0005
b1 = -0.0056
b2 = -0.0066
b3 = -0.0375
b4 = 0.0636
b5 = -0.01442
c0 = 0.008
c1 = 0.0005
X = 400RT
Y = 100RT
f(t)=
T-15
1 + 0.0162•(t-15)
If the reading is out of range, the full-scale value (400.0%) will be
displayed blinking.
If this occurs during a log, a “!“ will be placed next to the measurement
unit. Data found in the CSV files with a “!“ should not be considered
reliable.
OPERATIONAL GUIDE
NaCl % Percent Scale
The NaCl % scale is an older salinity scale used for seawater salinity. In this scale 100% salinity is
equivalent to roughly 10% solids. High percentages were made by evaporation. To display NaCl in
% units, enter SETUP and select NaCl% unit. Press the RANGE/u key until “NaCl%” is displayed
on the LCD. The instrument will display the NaCl% reading on the first LCD line and the temperature
reading on the second LCD line.
Natural Sea Water Scale
The Natural Sea Water Scale extends from 0.00 - 80.00 g/L. It determines salinity based upon a
conductivity ratio of sample to “standard seawater” at 15 °C.
Where R15 is the conductivity ratio and salinity is defined by the following equation:
S = - 0.08996 + 28.2929729R15 + 12.80832R152 - 10.67869R153 + 5.98624R154 -1.32311R155
Note: The formula can be applied for temperatures between 10 ºC and 31 ºC.
If the reading is out of the measurement range, the display will flash the highest value possible
and a warning message will be displayed. If this occurs during a log a “!” will be placed next to the
measurement unit. Data found in the CSV file with a ”!” should not be considered reliable.
53
OPERATIONAL GUIDE
DISSOLVED OXYGEN SETUP
Steps To Optimize
1. Determine if Concentration or % Saturated measurements will be made.
2. Prepare the Dissolved Oxygen (DO) probe for measurement.
3. Connect the probe to the meter and configure the SETUP parameters.
4. Calibrate the DO sensor.
5. Take measurements using the DO sensor.
Measurements Available
Concentration measurements in water, and % oxygen-saturated measurements are available using
edge® together with HI764080 DO probe. Algorithms used for concentration measurements (units
of ppm or mg/L) are based upon the oxygen solubility in air-saturated fresh water. Compensation for
salinity and altitude are made by configuring SETUP options. Percent saturation measurements are
based upon the partial pressure of oxygen and are suitable for measurement in samples other than
air-saturated fresh water. It is advised to check material compatibility of the probe with the sample.
DO Probe Preparation
CAUTION: Use care during servicing and use. The HI764080 contains a glass insulator. Do not drop
or handle carelessly.
Probes from Hanna Instruments are shipped dry.
1. Carefully remove the cardboard shipping tube used to protect the probe during shipping. Save
the tube, should the probe be stored dry again.
2. Open membrane package and remove one O-Ring and one membrane cap.
3. Rinse the membrane cap with a small amount of HI7041 electrolyte and
discard.
4. Position the O-Ring in cap as indicated. Refill membrane cap 3/4 full with
electrolyte solution, ensure to cover the O-Ring.
5. Holding the membrane cap by the top, tap the side walls of the membrane
cap to dislodge gas bubbles and force them to rise to the surface. Do not
tap on the membrane directly as it may damage it.
6. With the probe facing down, slowly screw the cap counterclockwise until
completely tightened. Electrolyte will overflow.
7. Rinse outer body of the probe and inspect membrane for entrapped gas
bubbles. The cathode area should be free of bubbles.
8. Connect the DO probe to edge® meter and turn meter on.
9. Allow probe conditioning (polarizing) function to occur.
54
The conditioning message will be displayed for about 60 seconds while
the DO probe is conditioned. If the probe was conditioned and a new
conditioning is not necessary, press any key to enter measurement
mode.
The probe is polarized with a fixed voltage of approximately 800 mV between the cathode and
anode. Probe polarization is essential for stable measurements. With the probe properly polarized,
oxygen is continually consumed as it passes through gas permeable PTFE membrane.
If polarization is interrupted, the electrolyte solution continues to be enriched with oxygen until it
reaches an equilibrium with the surrounding solution. Whenever measurements are taken with a
non-polarized probe, the measurement will be drifty and inaccurate. The measurement will jump
when the probe is moved.
Note: When not in use and during polarization, use the protective transparent cap.
OPERATIONAL GUIDE
During this process, the following message will be displayed on the
LCD, “DISSOLVED OXYGEN PROBE CONDITIONING”.
DISSOLVED OXYGEN PROBE DIAGRAM
1. Strain Relief
2. Probe Cap
3. PEI Probe Body
4. Temperature Sensor
5. Threads for Membrane Cap
6. Ag/AgCl Anode and Reference
7. Glass Insulator
8. Platinum Cathode
9. O-Ring
10. Disposable Membrane Cap
11. Oxygen Permeable PTFE Membrane
12. Shipping Tube
55
OPERATIONAL GUIDE
Parameter
Description
Altitude (m)
Concentration measurements of
dissolved oxygen change depending
on atmospheric pressure. A
convenient way to estimate
atmospheric pressure effects is by
the related parameter of elevation
(m) above or below sea level.
Enter altitude in meters closest
to the actual altitude to ensure
the most accurate calibration and
concentration measurement.
Dissolved oxygen solubility
decreases if water contains salts.
Selecting this factor as to be
Salinity (g/L) close to your known salt level,
will improve the accuracy of DO
concentration calibration and
measurement.
DO Units
56
Choices
Default
-500, -400, -300, -200, -100, 0,
100, 200, 300, 400, 500, 600,
700, 800, 900, 1000, 1100,
1200, 1300, 1400, 1500, 1600,
1700, 1800, 1900, 2000, 2100, 0
2200, 2300, 2400, 2500, 2600,
2700, 2800, 2900, 3000, 3100,
3200, 3300, 3400, 3500, 3600,
3700, 3800, 3900, 4000 m
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
11, 12, 13, 14, 15, 16, 17 18,
19, 20, 21, 22, 23, 24, 25, 26,
27, 28, 29, 30, 31, 32, 33, 34,
35, 36, 37,38, 39, 40 g/L
Select preferred measurement units
mg/L or ppm
for DO concentration.
0
ppm
OPERATIONAL GUIDE
DISSOLVED OXYGEN METER CONFIGURATION
DO (Dissolved Oxygen) meter operation is configured using the SETUP/CLR key with a DO probe
connected to the meter. The parameter-specific options will be seen inserted into the menu. There is
no Basic mode for Dissolved Oxygen measurements.
Location
Meter
Feet
Sebkha paki Tah, Morocco
-55
-180
Lake Frome, Australia
-6
-20
-1 to -7
-3 to -23
Lake Michigan, USA
176
577
Lake Geneva; France, Switzerland
372
1220
Denver, CO USA
1609
5279
Mount Everest
8848
29029
Netherlands, coastal providence
OPERATIONAL GUIDE
Salinity and Altitude Compensation
Temperature, altitude and salinity compensation are used for DO concentration measurements
(ppm or mg/L). When the water is colder, it can hold more dissolved oxygen, when it is warmer it
holds less oxygen. Compensation for temperature-related solubility is done automatically using the
built-in temperature sensor within the DO probe and algorithms in edge®.
When water is measured at an altitude below sea level, oxygen solubility increases, but above sea
level the oxygen solubility decreases. To compensate for this during calibration and measurement,
the user must provide the approximate altitude (in meters) in the SETUP menu.
The settings are in 100 m increments; select the value closest to the actual altitude. Some examples
of altitudes around the world follow:
The solubility of oxygen in water is also influenced by the amount of salt the water contains. Seawater
typically has a salinity of 35 g/L and the oxygen solubility is 18 % less compared to fresh water
at 25 °C. By entering the approximate salinity value, the calibration and subsequent concentration
measurement will be compensated to display the correct oxygen concentration. A 18 % error would
result if the salinity value is not entered.
Note: Salinity and Altitude have no effect on % oxygen solubility range.
When water is fresh, containing no sea water, the concentration of oxygen will be at a maximum.
The solubility of the oxygen dissolved in water is decreased when water is brackish or seawater. The
solubility of oxygen in water is decreased when measurements are made at elevations above sea
level.
57
OPERATIONAL GUIDE
DISSOLVED OXYGEN CALIBRATION
Before proceeding with the calibration, make sure the probe is ready for measurements (see
page 54), i.e. the membrane cap is filled with electrolyte, the probe is connected to the meter and
properly polarized. For an accurate calibration, it is recommended to wait at least 15 minutes to
ensure conditioning of the probe. Keep the protective cap on during polarization time and remove it
for calibration and measurements. Follow the calibration procedure. Calibrate the probe frequently,
especially if high accuracy is required. The probe can be calibrated at 2 points: 100.0 % (slope
calibration) and 0.0 % (zero calibration).
Initial Preparation
Prepare a fresh bottle of HI7040 by following package directions. Use solution within one month of
preparation. Pour small quantities of HI7040 Zero Oxygen solution into a beaker. If used, remove the
protective cap from the DO probe.
100% Saturated Calibration
It is suggested to perform the slope calibration in water-saturated air.
Pour water into a small beaker.
Rinse the polarized probe with clean water.
Dry the probe tip and allow a few seconds for the LCD reading to stabilize (probe in air).
Suspend probe with membrane just over the beaker of water.
Press CAL/MODIFY key.
The “ ” tag will be displayed along with “WAIT” blinking on the LCD
until the reading is stable.
When the reading is stable and is within the limits, “CFM” tag starts
blinking. Press GLP/CFM key to confirm the 100.0 % DO calibration.
Press CAL/MODIFY key to leave calibration after the first point. The instrument will display
“SAVING” message and it will return to measurement mode memorizing the slope calibration data.
Zero Calibration
Press CAL/MODIFY key or continue with calibration after confirming
first point. The meter will display “WAIT” and “0.0 %” will be displayed
in lower right corner.
58
When the reading is stable and stops decreasing, “CFM” tag starts
blinking. Press GLP/CFM key to confirm the 0.0 % DO calibration.
The instrument will display “SAVING” message and it will return
to measurement mode. Rinse probe tip off in water before taking
measurements in samples.
OPERATIONAL GUIDE
Submerse the probe membrane and temperature sensor into the beaker containing HI7040 Zero
Oxygen solution and stir gently for 2-3 minutes, the reading will go down.
DISSOLVED OXYGEN CALIBRATION MESSAGES
If the reading is outside limits, “WRONG STANDARD“ message will be
displayed.
If the temperature is out of range (0.0 - 50.0 ºC) during calibration,
then the message “WRONG STANDARD TEMPERATURE” will be
displayed and temperature value will blink.
DISSOLVED OXYGEN GLP INFORMATION
GLP refers to a quality control function used to ensure uniformity of probe calibrations and
measurements. The dedicated GLP/CFM key opens a file of the latest calibration information. Use
the
keys to scroll the stored information. This includes the standards used, temperature of the
standard, Altitude and Salinity factors, time and date of the last calibration, the expired calibration
information and the probe serial number. This information is also included with all logged data.
Last DO Calibration Data
The last DO calibration data is stored automatically after a successful
calibration. To view the DO calibration data, press GLP/CFM key when
the instrument is in measurement mode.
59
OPERATIONAL GUIDE
The instrument will display:
The calibration standard and the calibration temperature:
0.0 % will be displayed if the instrument was calibrated at this point.
100 % calibration point, if instrument was calibrated in water-saturated
air.
The altitude and salinity setting at the moment of calibration together
with the current reading.
The time of day that the calibration was performed together with the
current reading.
The date of the calibration together with the current reading.
Calibration Expiration status together with the current reading: If
disabled, “EXPIRATION WARNING DISABLED” is displayed.
If enabled, the number of days until the calibration alarm “CAL DUE”
will be displayed. (i.e. “CAL EXPIRES IN 2 DAYS”)
60
The probe serial number together with the current reading.
OPERATIONAL GUIDE
If enabled, the number of days the calibration has expired
(i.e. “CAL EXPIRED 2 DAYS AGO”).
DISSOLVED OXYGEN MEASUREMENTS
Make sure that the probe is polarized, calibrated and the protective cap has been removed.
Rinse probe.
Submerse the probe in the sample to be tested, make sure temperature probe is also immersed. Allow
reading to stabilize.
Note: The sample should be stirred when taking a reading.
The Dissolved Oxygen value (in %) is displayed on the first LCD line and
the temperature on the secondary LCD line.
Press RANGE/u to change the reading from % to ppm (mg/L) and
vice versa.
Oxygen is consumed during the measurement. For accurate DO measurements, water movement of
0.3 m/s is suggested. This is to ensure that the oxygen-depleted membrane surface is constantly
measuring a representative sample. The use of a magnetic stirrer is recommended. The probe has a
built-in temperature sensor. Make sure it is also in sample. The measured temperature is indicated
on the second LCD line as shown above. Allow time for the probe to reach thermal equilibrium before
taking any measurement. This can take several minutes. The greater the difference between the
temperature at which the probe was stored and the temperature of the sample, the longer the time
will be.
61
OPERATIONAL GUIDE
If the DO temperature exceeds the limits of the probe, the message “PROBE OUT OF SPEC” will scroll
on the third LCD line and LCD will display dashes. If the temperature exceeds the meter specification
120 ºC, then “120 ºC” will blink on the display. If interval logging, the message “OUT OF SPEC.” will
alternate with the Log specific messages in both of these cases. The Log file will indicate “ºC!” next to
the data. In this case, the temperature sensor is damaged, “BROKEN TEMPERATURE SENSOR” will
be displayed and the temperature will display “----” along with the unit tag blinking on the second
LCD line. The Log file will indicate “ºC!!” next to the data.
MAINTENANCE
pH PROBE MAINTENANCE
62
During transport, tiny bubbles of air may form inside the glass bulb affecting proper functioning of
the electrode. These bubbles can be removed by “shaking down” the electrode as you would do with
a glass thermometer. If the bulb and/or junction is dry, soak the electrode in HI70300 or HI80300
storage solution for at least one hour.
MAINTENANCE
Remove the protective cap of the pH electrode.
DO NOT BE ALARMED IF SALT DEPOSITS ARE PRESENT.
This is normal with electrodes. They will disappear when rinsed with water.
For refillable electrodes:
If the filling solution (electrolyte) is more than 2½ cm (1”) below the fill hole, add HI7082 or
HI8082 3.5M KCl Electrolyte Solution for double junction electrodes.
Unscrew the fill hole cover during measurements so the liquid reference junction maintains an
outward flow of electrolyte.
Measurement
Rinse the electrode tip with distilled water. Submerse the tip 3 cm (1¼”) in the sample and stir
gently for a few seconds.
For a faster response and to avoid cross-contamination of the samples, rinse the electrode tip with a
few drops of the solution to be tested, before taking measurements.
Storage Procedure
To minimize clogging and ensure a quick response time, the glass bulb and the junction should be
kept moist and not allowed to dry out.
Replace the solution in the protective cap with a few drops of HI70300 or HI80300 Storage Solution
or, in its absence, Filling Solution (HI7082 or HI8082 for double junction electrodes).
Follow the preparation procedure before taking measurements.
Note: NEVER STORE THE ELECTRODE IN DISTILLED OR DEIONIZED WATER.
Periodic Maintenance
Inspect the electrode and the cable. The cable used for connection to the instrument must be intact
and there must be no points of broken insulation on the cable or cracks on the electrode stem or
bulb. Connectors must be perfectly clean and dry. If any scratches or cracks are present, replace the
electrode. Rinse off any salt deposits with water.
63
MAINTENANCE
For refillable electrodes: Refill the reference chamber with fresh electrolyte (HI7082 or HI8082 for
double junction electrodes). Allow the electrode to stand upright for 1 hour. Follow the Storage
Procedure (page 63).
Cleaning Procedure
Use diagnostic messages to aid pH electrode troubleshooting. Several cleaning solutions are
available:
•
•
•
•
General – Soak in Hanna Instruments HI7061 or HI8061 General Cleaning Solution for
approximately ½ hour.
Protein – Soak in Hanna Instruments HI7073 or HI8073 Protein Cleaning Solution for
15 minutes.
Inorganic – Soak in Hanna Instruments HI7074 Inorganic Cleaning Solution for
15 minutes.
Oil/grease – Rinse with Hanna Instruments HI7077 or HI8077 Oil and Fat Cleaning
Solution.
Note: After performing any of the cleaning procedures, rinse the electrode thoroughly with
distilled water, refill the reference chamber with fresh electrolyte (not necessary for gel-filled
electrodes) and soak the electrode in HI70300 or HI80300 Storage Solution for at least
1 hour before taking measurements.
EC PROBE MAINTENANCE
Rinse the probe with clean water after measurements. If a more thorough cleaning is required,
remove the probe sleeve and clean the probe with a cloth or a nonabrasive detergent. Make sure
to reinsert the sleeve onto the probe properly and in the right direction. After cleaning the probe,
recalibrate the instrument.
The insulator used to support the platinum rings is made of glass. Use extreme caution when
handling this probe.
64
For a new probe, remove the protective shipping tube by gently twisting and pulling
it off the body of the probe (see fig. 1).
MAINTENANCE
DISSOLVED OXYGEN PROBE MAINTENANCE
The DO probe body is made of PEI.
A temperature sensor provides temperature measurements of the sample. Use the protective cap
when the probe is not in use. To replace the membrane or refill with electrolyte, proceed as follows:
If the membrane was previously installed, unscrew the membrane cap by turning it
clockwise (see fig. 2).
The new membrane cap should be rinsed with electrolyte solution. Refill with clean
electrolyte solution.
Gently tap the sides of the membrane cap to ensure that no air bubbles remain
trapped. Do not tap the bottom directly with your finger, as this will damage the
membrane.
Make sure that the rubber O-Ring sits properly inside the membrane cap. With the
sensor facing down, slowly screw the membrane cap clockwise. Some electrolyte
will overflow.
65
MAINTENANCE
The platinum cathode (DO Probe Diagram, page 55) should always be bright and untarnished. If it is
tarnished or stained, the cathode should be cleaned. You can use a clean lint-free cardboard or cloth.
Rub the cathode very gently side to side 4-5 times.
This will be enough to polish and remove any stains without damaging the platinum tip. Afterwards,
rinse the probe with deionized or distilled water and install a new membrane cap using fresh
electrolyte and follow DO Probe Preparation page 54.
Important
In order to have accurate and stable measurements, it is important that the membrane surface is in
perfect condition. This semipermeable membrane isolates the sensor elements from the environment
but allows oxygen to enter. If any dirt is observed on the membrane, rinse carefully with distilled
or deionized water. If imperfections still exist, or any damage is evident (such as wrinkles or
tears-holes), the membrane should be replaced. Make sure that the O-Ring sits properly in the
membrane cap.
66
Symptoms
Slow response/excessive
drift.
Problems
Dirty pH electrode.
Solution
Clean the electrode and then soak the tip in
HI7061 or HI8061 for 30 minutes.
pH: Clogged/dirty junction.
Clean the electrode. Refill with fresh solution
Low electrolyte level (refillable (for refillable electrodes only). Check cable
electrodes only).
and connectors.
Readings fluctuate up
and down (noise).
The meter does not
accept the buffer/
standard solution for
calibration.
If the display shows:
“pH” and “-2.00” or
“16.00” blinking.
The display shows EC,
TDS or Salinity readings
blinking.
The display shows DO
reading blinking.
EC: EC probe sleeve not
properly inserted; air bubbles
inside sleeve.
Reinstall the sleeve. Tap the probe to remove
air bubbles. Move to center of beaker. Verify
top hole in sleeve is covered with solution.
DO: DO probe electrolyte
contains entrapped gas.
Remove cap. Refill, tap and reinstall.
pH: Dirty electrode or
contaminated buffer.
Follow the cleaning procedure. If still no
results, replace the electrode. Replace buffer.
EC: The EC probe is defective.
Follow the cleaning procedure. If still no
results replace the probe. Verify correct
standard is selected.
Out of range in the pH scale.
A) Verify that the shipping cap has been
removed.
B) Make sure the pH sample is in the
specified range.
C) Check electrolyte level and general state
of the electrode.
Out of range in EC, TDS or
Salinity scale.
Out of range in DO scale.
MAINTENANCE
TROUBLESHOOTING GUIDE
Verify the plastic shipping spacer has been
removed from probe. Recalibrate the probe.
Make sure the solution is in specified range.
Make sure the range is not locked. (Select
Auto range)
Verify area of cathode is free of bubbles
inside cap. Verify solution movement past
membrane. Remove cap, inspect and clean if
necessary. Install new cap, fresh electrolyte
with no bubbles, permit longer polarization.
Stir or increase flow rate.
67
MAINTENANCE
Symptoms
If the display shows: “mV”
and “-1000” or “1000”
blinking.
The meter does not
measure temperature. “---” is displayed on second
LCD line.
The meter fails to calibrate
NaCl.
The meter fails to calibrate
or gives faulty readings.
At startup the meter
displays all LCD tags
permanently.
CAL “Prod” message at
startup.
68
Problems
Solution
A) Verify the shipping cap has been
removed.
B) Make sure the sample pH is within
Out of range in the mV specified range.
scale.
C) Verify electrolyte level in pH sensor is
topped off.
D) Verify no bubbles inside pH
membrane.
Broken temperature
sensor.
Replace the probe.
Incorrect EC calibration.
Recalibrate the meter in EC range. Set
cell constant to 1.
Broken pH electrode.
Replace the electrode.
One of the keys is
stuck.
Check the keyboard or contact your local
Hanna Instruments Office.
Instrument was not
Contact your local Hanna Instruments
factory calibrated or
Office for help.
lost factory calibration.
Range
Temperature
-2.00 to 16.00 pH
-2.000 to 16.000 pH*
±1000.0 mV
-20.0 to 120.0 ºC (-4.0 to 248.0 °F)**
0.01 pH
0.001 pH*
0.1 mV
0.1 ºC
Accuracy
@ 25 °C / 77 °F
±0.01 pH
±0.002 pH*
±0.2 mV
±0.5 ºC
pH Calibration
Automatic, up to 3 points (5 points*) calibration, 5 standard (7 standard*) buffers available
(pH 1.68*, 4.01 or 3.00, 6.86, 7.01, 9.18, 10.01, 12.45*) and 2 custom buffers*
Resolution
Temperature
compensation
Automatic -5.0 to 100.0 ºC (23.0 to 212.0 ºF) (using integral temperature sensor)
pH Electrode
HI11310 digital pH/temperature electrode
Log feature
Up to 1000* records organized in: Log on demand (Max. 200 logs)
Log on stability (Max. 200 logs) Interval logging*
EC
TDS
SPECIFICATIONS
pH
Salinity
Range
0.00 to 29.99 μS/cm,
30.0 to 299.9 μS/cm,
300 to 2999 μS/cm,
3.00 to 29.99 mS/cm,
30.0 to 200.0 mS/cm,
up to 500.0 mS/cm,
absolute conductivity ‡
0.00 to 14.99 ppm (mg/L),
15.0 to 149.9 ppm (mg/L),
150 to 1499 ppm (mg/L),
1.50 to 14.99 g/L,
15.0 to 100.0 g/L,
up to 400.0 g/L absolute TDS ‡
(with 0.80 factor)
0.0 to 400.0 %NaCl *,
2.00 to 42.00 PSU *,
0.00 to 80.00 g/L *
Resolution
0.01 μS/cm,
0.1 μS/cm,
1 μS/cm,
0.01 mS/cm,
0.1 mS/cm
0.01 ppm,
0.1 ppm,
1 ppm,
0.01 g/L,
0.1 g/L
0.1% NaCl,
0.01 PSU,
0.01 g/L
Accuracy
@ 25 °C / 77 °F
±1% of reading
(±0.05 μS/cm or 1 digit,
whichever is greater)
±1% of reading
(±0.03 ppm or 1 digit,
whichever is greater)
±1% of reading
EC Calibration
1 Cell Factor calibration;
6 standards available: 84 µS/cm, 1413 μS/cm, 5.00 mS/cm, 12.88 mS/cm, 80.0 mS/cm,
111.8 mS/cm, 1 point offset: 0.00 μS/cm
69
SPECIFICATIONS
EC
TDS
Salinity Calibration
%NaCl (only)
Single point with HI7037 Standard
Temperature
compensation
Automatic -5 to 100 ºC (23 to 212 ºF)
NoTC - can be selected to measure
absolute conductivity.
Salinity
Conductivity temperature
0.00 to 6.00 %/ºC (for EC and TDS only). Default value is 1.90 %/ºC
coefficient
TDS factor
0.40 to 0.80 (default value is 0.50)
EC Probe
HI763100 digital four-ring conductivity probe
Log feature
Up to 1000 * (400) records organized in: Manual log on demand (Max. 200 logs), Manual
log on stability (Max. 200 logs), Interval logging * (Max. 600 logs; 100 lots)
DO
70
Range
0.00 to 45.00 ppm (mg/L)
0.0 to 300.0%
0.0 to 50.0 ºC (32.0 to 122.0 °F)**
Resolution
0.01 ppm (mg/L)
0.1%
0.1 °C
Accuracy
@ 25 °C / 77 °F
±1.5% of reading ±1 digit
±0.5 ºC
DO Calibration
One or two points at 0% (HI7040) and 100% (water saturated air)
Altitude Compensation
Resolution
-500 to 4,000 m (-1640 to 13120’)
100 m (328’)
Salinity Compensation
Resolution
0 to 40 g/L
1 g/L
Temperature
Compensation
0.0 to 50.0 ºC
(32.0 to 122 ºF)
DO Probe
HI764080 digital dissolved oxygen electrode
Log Feature
Up to 1000 records organized in Manual Log on Demand (Max. 200 logs)
Manual Log on Stability (Max. 200 logs)
Interval Logging (Max 600 logs, 100 lots)
PC Interface
Micro USB
Storage Interface
USB
Power Supply
Environment
Dimensions
Weight
5 VDC Adapter (included)
0-50 ºC (32-122 ºF) Max 95% RH non-condensing
202 x 140 x 12 mm (7.9 x 5.5 z 0.5”)
250g (8.82 oz)
SPECIFICATIONS
Additional Specifications
*Standard Mode Only
** Temperature limits will be reduced to actual probe/sensor limits.
‡Absolute conductivity (or TDS) is the conductivity (or TDS) value without temperature compensation.
71
ACCESSORIES
Electrodes/Probes
HI10530
HI10430
HI11310
HI11311
HI12300
HI12301
HI763100
HI764080
Triple ceramic, double junction, glass body, refillable pH electrode with conical
tip and temperature sensor
Triple ceramic, double junction, glass body, refillable pH electrode with
temperature sensor
Glass body, double junction, refillable pH/temperature electrode
Glass body, double junction, refillable pH/temperature electrode with
enhanced diagnostics
Plastic body, double junction, gel filled, non refillable pH/temperature
electrode
Plastic body, double junction, gel filled, non refillable pH/temperature
electrode with enhanced diagnostics
EC/temperature probe
DO/temperature probe
pH
BUFFER SOLUTIONS
HI70004P
pH 4.01 Buffer Sachets, 20 mL (25 pcs.)
HI70007P
pH 7.01 Buffer Sachets, 20 mL (25 pcs.)
HI70010P
pH 10.01 Buffer Sachets, 20 mL (25 pcs.)
HI7001L
pH 1.68 Buffer Solution, 500 mL
HI7004L
pH 4.01 Buffer Solution, 500 mL
HI7006L
pH 6.86 Buffer Solution, 500 mL
HI7007L
pH 7.01 Buffer Solution, 500 mL
HI7009L
pH 9.18 Buffer Solution, 500 mL
HI7010L
pH 10.01 Buffer Solution, 500 mL
HI8004L
pH 4.01 Buffer Solution in FDA approved bottle, 500 mL
HI8006L
pH 6.86 Buffer Solution in FDA approved bottle, 500 mL
HI8007L
pH 7.01 Buffer Solution in FDA approved bottle, 500 mL
HI8009L
pH 9.18 Buffer Solution in FDA approved bottle, 500 mL
HI8010L
pH 10.01 Buffer Solution in FDA approved bottle, 500 mL
ELECTRODE STORAGE SOLUTIONS
HI70300L
Storage Solution, 500 mL
HI80300L
Storage Solution in FDA approved bottle, 500 mL
72
ACCESSORIES
ELECTRODE CLEANING SOLUTIONS
HI70000P
Electrode Rinse Sachets, 20 mL (25 pcs.)
HI7061L
General Cleaning Solution, 500 mL
HI7073L
Protein Cleaning Solution, 500 mL
HI7074L
Inorganic Cleaning Solution, 500 mL
HI7077L
Oil & Fat Cleaning Solution, 500 mL
HI8061L
General Cleaning Solution in FDA approved bottle, 500 mL
HI8073L
Protein Cleaning Solution in FDA approved bottle, 500 mL
HI8077L
Oil & Fat Cleaning Solution in FDA approved bottle, 500 mL
ELECTRODE REFILL ELECTROLYTE SOLUTIONS
HI7082
3.5M KCl Electrolyte, 4x30 mL, for double junction electrodes
3.5M KCl Electrolyte in FDA approved bottle, 4x30 mL, for double junction
HI8082
electrodes.
EC
CONDUCTIVITY SOLUTIONS
HI70030P
12880 μS/cm, 20 mL sachets (25 pcs.)
HI70031P
1413 μS/cm, 20 mL sachets (25 pcs.)
HI70039P
5000 μS/cm, 20 mL sachets (25 pcs.)
HI7030M
12880 μS/cm, 230 mL bottle
HI7031M
1413 μS/cm, 230 mL bottle
HI7033M
84 μS/cm, 230 mL bottle
HI7034M
80000 μS/cm, 230 mL bottle
HI7035M
111800 μS/cm, 230 mL bottle
HI7039M
5000 μS/cm), 230 mL bottle
HI7030L
12880 μS/cm, 500 mL bottle
HI7031L
1413 μS/cm, 500 mL bottle
HI7033L
84 μS/cm, 500 mL bottle
HI7034L
80000 μS/cm, 500 mL bottle
HI7035L
111800 μS/cm, 500 mL bottle
HI7039L
5000 μS/cm, 500 mL bottle
HI7037L
100% NaCl sea water standard solution, 500 mL bottle
73
ACCESSORIES
HI8030L
HI8031L
HI8033L
HI8034L
HI8035L
HI8039L
12880 μS/cm, 500 mL FDA approved bottle
1413 μS/cm, 500 mL FDA approved bottle
84 μS/cm, 500 mL FDA approved bottle
80000 μS/cm, 500 mL FDA approved bottle
111800 μS/cm, 500 mL FDA approved bottle
5000 μS/cm, 500 mL FDA approved bottle
DO
HI7040L
HI7041S
HI764080A/P
Zero Oxygen Solution
Refilling Electrolyte Solution, 30 mL
5 spare membranes
Other Accessories
HI75110/220U
HI75110/220E
HI76404B
HI2000WC
HI2000BC
Voltage adapter from 115 Vac to 5 Vdc (USA plug)
Voltage adapter from 230 Vac to 5 Vdc (European plug)
Electrode holder
Wall cradle
Bench cradle
MANEDGE 10/16
74
Warranty
The edge® is warranted for two years against defects in workmanship and materials
when used for their intended purpose and maintained according to instructions.
Electrodes and probes are warranted for six months. This warranty is limited to
repair or replacement free of charge.
Damage due to accidents, misuse, tampering or lack of prescribed maintenance
is not covered.
If service is required, contact your local Hanna Instruments Office. If under war‑
ranty, report the model number, date of purchase, serial number and the nature
of the problem. If the repair is not covered by the warranty, you will be notified
of the charges incurred. If the instrument is to be returned to Hanna Instruments,
first obtain a Returned Goods Authorization (RGA) number from the Technical Service
department and then send it with shipping costs prepaid. When shipping any
instrument, make sure it is properly packed for complete protection.
Hanna Instruments reserves the right to modify the design, construction or appearance of its
products without advance notice.
World
Headquarters
Hanna Instruments Inc.
Highland Industrial Park
584 Park East Drive
Woonsocket, RI 02895 USA
www.hannainst.com
Local Office
Hanna Instruments USA
270 George Washington Highway
Smithfield, RI 02917
Phone: 800.426.6287
Fax: 401.765.7575
e-mail: tech@hannainst.com
MANEDGE
Printed in ROMANIA
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