Hach H160 User manual

DOC022.98.80058
H160, H170
10/2013, Edition 1
User Manual
Bedienungsanleitung
Manuel d'utilisation
Uživatelská příručka
Brugsanvisning
Instrukcja obsługi
Ръководство на потребителя

English..............................................................................................................................3
Deutsch..........................................................................................................................21
Français.........................................................................................................................40
Čeština...........................................................................................................................59
Dansk..............................................................................................................................77
Polski..............................................................................................................................95
български...................................................................................................................113
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Table of contents
Specifications on page 3 Startup on page 10
General information on page 4 Operation on page 11
Installation on page 7 Maintenance on page 14
User interface and navigation on page 8 Troubleshooting on page 17
Specifications
Specifications are subject to change without notice.
Specification Details
Dimensions (W x D x H) 9 x 20 x 5 cm (3.5 x 8 x 2 in.)
Enclosure Water resistant
Weight 1300 g (3.0 lb.)
Power requirements 4-ANSI 15 A or IEC-LR6 (AA Alkaline)
Power consumptions 1 W with backlight on
Battery life Up to 200 hours continuous operation, 10-hour advance of low battery warning
Operating temperature 5 to 40 °C (41 to 104 °F)
Storage temperature –20 to +40 °C (4 to 140 °F)
Operating humidity Relative humidity: 50% maximum at 25 ºC (77 ºF), non-condensing
Input connectors 8-pin ISFET, BNC with phono jack temperature, 12-pin conductivity (H170 only)
Languages English
Temperature correction Off, automatic and manual (parameter dependent)
Measurement Continuous measurement
Protection rating IP67
Certifications CE
pH
Calibration Up to five points: 1.68, 4.01, 6.86, 7.00, 9.18, 10.01, 12.45
Accuracy ±0.01 pH
Resolution 0.01 pH
Range 0.00 to 14.00
mV
Calibration None
Accuracy 0.1 mV
Resolution Autoranging, 0.1 and 1
Range Autoranging, ±199.9 mV to ±1999 mV
Temperature
Calibration None
Accuracy ±0.5 °C
English 3

Specification Details
Resolution 0.1 °C (0.1 °F)
Range –0 to 100 °C (32 to 212°F)
Conductivity
Calibration Up to five points
Accuracy ±1% ppt (–2 to +35 °C)
Resolution 0.01 ìS, 0.1 ìS ,1 ìS, 0.01 mS, 0.1 mS
Range Autoranging: 0.00 to 19.99 ìS, 20.0 to 199.9 ìS, 200 to 1999 ìS, 2.00 to 19.99 mS,
20.0 to 199.9 mS
TDS
Calibration Up to five points
Accuracy ±1% full scale or ±1 digit
Resolution 0.01 ppm, 0.1 ppm, 1 ppm, 0.01 ppt, 0.1 ppt, 1 ptt, 0.1 mg/L, 1mg/L ,0.01 gal/L,
0.1 gal/L
Range Autoranging: 0.00 to 9.99 ppm, 10.0 to 99.9 pm, 100 to 999 ppm,1.00 to 9.99 ppt,
10.0 to 99.9 ppt, 100 to 200 ppt
mg/L: 0.00 to 199.9 mg/L, 200 to 1999 mg/L, 2.00 to 19.99 gal/L, 20.0 to 50 gal/L
Salinity
Calibration None (derived from conductivity)
Accuracy ±0.1 ppt, –2 to +35 °C (28.4 to 95 °F )
Resolution 0.1 ppt 1%
Range 0 to 42 ppt
General information
In no event will the manufacturer be liable for direct, indirect, special, incidental or consequential
damages resulting from any defect or omission in this manual. The manufacturer reserves the right to
make changes in this manual and the products it describes at any time, without notice or obligation.
Revised editions are found on the manufacturer’s website.
Safety information
N O T I C E
The manufacturer is not responsible for any damages due to misapplication or misuse of this product including,
without limitation, direct, incidental and consequential damages, and disclaims such damages to the full extent
permitted under applicable law. The user is solely responsible to identify critical application risks and install
appropriate mechanisms to protect processes during a possible equipment malfunction.
Please read this entire manual before unpacking, setting up or operating this equipment. Pay
attention to all danger and caution statements. Failure to do so could result in serious injury to the
operator or damage to the equipment.
Make sure that the protection provided by this equipment is not impaired. Do not use or install this
equipment in any manner other than that specified in this manual.
Use of hazard information
D A N G E R
Indicates a potentially or imminently hazardous situation which, if not avoided, will result in death or serious injury.
4 English

WARNING
Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious
injury.
CAUTION
Indicates a potentially hazardous situation that may result in minor or moderate injury.
N O T I C E
Indicates a situation which, if not avoided, may cause damage to the instrument. Information that requires special
emphasis.
Precautionary labels
Read all labels and tags attached to the instrument. Personal injury or damage to the instrument
could occur if not observed. A symbol on the instrument is referenced in the manual with a
precautionary statement.
This is the safety alert symbol. Obey all safety messages that follow this symbol to avoid potential
injury. If on the instrument, refer to the instruction manual for operation or safety information.
This symbol indicates that a risk of electrical shock and/or electrocution exists.
Electrical equipment marked with this symbol may not be disposed of in European public disposal
systems after 12 August of 2005. In conformity with European local and national regulations (EU
Directive 2002/96/EC), European electrical equipment users must now return old or end-of-life
equipment to the Producer for disposal at no charge to the user.
Note: For return for recycling, please contact the equipment producer or supplier for instructions on how to return end-
of-life equipment, producer-supplied electrical accessories, and all auxiliary items for proper disposal.
Certification
Canadian Radio Interference-Causing Equipment Regulation, IECS-003, Class A:
Supporting test records reside with the manufacturer.
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing
Equipment Regulations.
Cet appareil numérique de classe A répond à toutes les exigences de la réglementation canadienne
sur les équipements provoquant des interférences.
FCC Part 15, Class "A" Limits
Supporting test records reside with the manufacturer. The device complies with Part 15 of the FCC
Rules. Operation is subject to the following conditions:
1. The equipment may not cause harmful interference.
2. The equipment must accept any interference received, including interference that may cause
undesired operation.
Changes or modifications to this equipment not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment. This equipment has been tested
and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules.
These limits are designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference, in which case the user will be required to
correct the interference at their expense. The following techniques can be used to reduce
interference problems:
English 5

1. Disconnect the equipment from its power source to verify that it is or is not the source of the
interference.
2. If the equipment is connected to the same outlet as the device experiencing interference, connect
the equipment to a different outlet.
3. Move the equipment away from the device receiving the interference.
4. Reposition the receiving antenna for the device receiving the interference.
5. Try combinations of the above.
Product overview
N O T I C E
Always disconnect power to the meter before an electrode is changed. Only use the meter as instructed in this
manual or instrument damage can occur.
The meter is available in two models:
• H160—pH and ORP
• H170—pH, ORP, conductivity, TDS and salinity
The H-series waterproof handheld meters use glass sensor electrodes with BNC connectors and
non-glass probes with ISFET (ion sensitive field effect transistor) silicon chip sensors. The meters
use one pH electrode (a BNC pH electrode or an ISFET pH probe) at a time. When a meter is set to
on, the meter automatically identifies the type of electrode that is attached.
Figure 1 Handheld meter
1 Rubber dust caps 5 ISFET pH probe connector (8-pin)
2 Conductivity probe connection (12-pin, H170 only) 6 LCD display
3 BNC probe connector 7 Power button
4 3.5 mm phono jack for glass pH electrode, ISE,
ORP or DO temperature sensors
8 Battery cover
Product components
Make sure that all components have been received. Refer to Figure 2. If any items are missing or
damaged, contact the manufacturer or a sales representative immediately.
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Figure 2 Handheld meter components
1 Waterproof handheld meter (H160 shown) 2 AA Alkaline batteries (4x)
Installation
CAUTION
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the
document.
Electrical installation
Install the batteries
CAUTION
Explosion hazard. Incorrect battery installation can cause the release of explosive gases. Be sure that
the batteries are of the same approved chemical type and are inserted in the correct orientation. Do not
mix new and used batteries.
N O T I C E
Do not tighten the screws too much or instrument damage can occur.
N O T I C E
Do not complete this operation with probes attached to the meter. Remove all probes from the meter or
instrument damage can occur.
The meter uses AA alkaline or rechargeable NiMH batteries. To conserve the battery life, refer to
Configure the meter on page 10 to configure automatic shutdown of the meter.
Refer to Figure 3 to install the batteries.
Items to collect:
• Phillips screwdriver
• AA Alkaline batteries (4x)
English 7

Figure 3 Battery installation
Probe and connection types
N O T I C E
Make sure that all the rubber plugs are fully installed before the handheld meter is put in water or the interior of
the 3.5 mm phono jack will fill with water. However, the interior of the handheld meter will stay sealed. If water
gets into the 3.5 mm phono jack, immediately invert the meter to let water come out of the phone jack, then let the
connector dry.
N O T I C E
Always set the power to off before a probe connection is changed or damage to the instrument can occur.
The meter can connect to two pH-sensing technologies: ISFET pH probes and glass electrodes.
When the meter is set to on, it automatically recognizes the type of probe attached. The meter only
uses one type of pH probe at a time.
Note: If a probe is not attached to the meter, the selected mode is inactive.
User interface and navigation
Keypad description
Figure 4 and Table 1 show the function of the keys for each meter.
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Figure 4 Keypad descriptions
Table 1 Keypad functions
Key Action H160 H170
ON/OFF: Set the power to on or off. x x
pH mode x x
mV mode x x
Set the backlight to on. After 2 minutes without a keystroke, the backlight is set to
off.
x x
TDS mode x
Conductivity mode x
Salinity mode x
Hold mode: Operates only in measurement modes. All readings freeze when hold
mode is set to on.
x x
Calibration mode x x
Scroll through values, setup screens and options. x x
Setup mode x x
Select an option, setting or value. x x
English 9

Display description
Figure 5 shows measurement modes and values, data connection and storage options, battery
status, temperature values, stabilization lock and connection statuses shown on the display.
Figure 5 Display
1 Setup mode 7 Measurement mode
2 Temperature and data values 8 Measurement units
3 Measured value 9 Automatic Temperature Compensation (ATC) value
(pH, conductivity, TDS or salinity)
4 Stabilization lock 10 Data storage memory location
5 Hold indicator 11 Temperature unit
6 ISFET probe indicator 12 Low battery indicator
Startup
Set the power to on
Push the power button to set the power to on or off. Make sure that the power supply (AC power or
battery power) is correctly installed.
Configure the meter
Complete the operations in order:
1. Set the power to on.
2. Push SETUP to put the meter in setup mode.
3. Use the arrow keys to select an option, then push ENTER:
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Option Function Description
READY Stabilization lock Sets the stabilization lock to on or off.
• The "READY" icon shows when an endpoint occurs and the stabilization
lock is set to on.
• After stabilization, the display locks the value and the meter ignores slight
changes in the measurement of pH, conductivity or TDS.
• Sets the stabilization lock to off during titrations or slight change detection.
The display automatically unlocks after a significant measurement change
is found.
ºC ºF Temperature
display
Sets the temperature unit to ºC or ºF.
Snd Sound options Sets the sound alerts to on or off. Three sounds tell the user about different
functions:
•One beep: Stabilization occurred with the stabilization lock on.
•Two beeps: An error occurred. The error code shows on the display. Refer
to Error codes on page 18.
•Three beeps: Measurement stability in calibration mode, regardless of the
stabilization lock setting.
oFF Automatic
shutdown
Sets shutdown parameters from 1 minute to 000 minutes (continuous power).
The meter beeps 1 minute before shutdown. Make sure to power cycle for the
automatic shutdown to occur. Automatic shutdown disables during: data
logging, Bluetooth™ transfers and when connected to the USB port.
CLr ALL
CAL
Clear calibration
points
Erases all calibration points in storage. Calibrate the meter again.1
1This does not erase calibration data for an ISFET probe.
4. Push ENTER to keep the changes and go back to setup mode.
Note: To exit and not keep the changes, push SETUP.
Operation
Override an error
The user can override some errors (e.g., poor electrode condition) until a replacement electrode is
ordered and received.
Note: It is not possible to override all errors. The manufacturer does not recommend that the user override error
codes. Contact technical support to override error codes.
To cancel or override an error:
1. Find the cause of the error. Refer to Error codes on page 18. If possible, push SETUP or pH,
COND, TDS or SAL to cancel the calibration or other error.
2. To override the error, do not complete step 1. Instead, push ENTER.
3. Use the arrow keys until "YES" shows.
4. Push ENTER.
Set the pH operations
Set the calibration alarm, the pH resolution, the calibration points and the calibration methods.
Complete the operations in order.
1. Set the power to on.
2. Push SETUP, then pH.
3. Use the arrow keys to select an option, then push ENTER:
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Operation Function
pH resolution Sets the pH resolution to 0.1 or 0.01 pH. The stabilization lock (the "READY" icon) is
faster at a 0.1 pH resolution.
Set the 2 or 3-point pH
calibration
Shows the current number of calibration points. Use the arrow keys to set the
calibration points.
pH calibration method • Sets the pH buffer. The default is a 2-point calibration (pH 7.00 then pH 4.00).
• Push ENTER again to set the first calibration buffer. The display shows the next
buffer. Do this procedure until all buffers are set. Previously-selected buffers do not
show.
4. Push ENTER to keep the changes and go back to setup mode.
Note: To exit and not keep the changes, push SETUP.
Set the manual temperature compensation
Glass pH electrodes are automatically temperature compensated if a temperature probe is sensed in
the 3.5 mm phono jack. If no probe is sensed, the meter defaults to the manual temperature
compensation at 25.0 ºC. Manual temperature compensation is always in ºC. Refer to Set the
manual temperature compensation for glass electrodes.
pH buffer values at various temperatures
25 ºC 0 ºC 5 ºC 10 ºC 20 ºC 30 ºC 40 ºC 50 ºC
1.68 1.67 1.67 1.67 1.67 1.68 1.69 1.71
4.01 4.00 4.00 4.00 4.00 4.01 4.03 4.06
6.86 6.98 6.95 6.92 6.87 6.85 6.84 6.83
7.00 7.12 7.09 7.06 7.01 6.99 6.97 6.97
9.18 9.46 9.40 9.33 9.23 9.14 9.07 9.02
10.01 10.32 10.25 10.18 10.06 9.97 9.98 9.83
12.45 13.42 13.21 13.00 12.63 12.29 12.04 11.70
1. Push SETUP, then pH to put into pH setup mode.
2. Use the arrow keys until the manual temperature shows "- - -.- ºC" on the display.
3. Push ENTER to see the manual temperature value.
4. Use the arrow keys to set the manual temperature compensation.
5. Push ENTER to keep the changes and go back to setup mode.
Note: To exit and not keep the changes, push SETUP.
Calibrate for pH measurement
The meter accepts 1,-2-or 3-point calibrations. The default is a 2-point calibration.
1. Set the power to on.
2. Connect the probe to the meter.
3. Push pH to put the meter in pH mode.
4. Put the probe in the buffer solution.
Note: To erase all previous calibration points, slopes and offsets, push CAL, then SELECT. To update a
previous calibration with a single-point calibration, ignore this step.
5. Push CAL, then the "CAL" icon flashes on the display.
Note: Stop a calibration when the pH value is in flash mode. Push pH or SETUP to go back to the
measurement mode.
6. If the buffer is correct, push ENTER, then the pH buffer flashes until the calibration is complete.
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7. If the pH buffer is not correct, use the arrow keys to select another buffer.
8. Use the arrow keys to see the buffers: 1.68, 4.01, 6.86, 7.00, 9.18, 10.01 and 12.45. During "CAL
2" or "CAL 3," the meter ignores the values used in previous calibrations.
9. The meter beeps three times when a calibration is complete. "CAL 3" and the next pH buffer
value (default = 4.01) flashes on the display.
10. Rinse the probe in deionized water. Put the probe in the second buffer solution.
11. If OK, push ENTER, or use the arrow keys to change the value. Push pH to accept a 1-point
calibration and to go back to the pH measurement mode. If ENTER is selected, the buffer value
flashes until calibration is complete.
12. If the meter is set for a 2-point calibration, the meter beeps three times when the calibration is
complete. The display shows the slope, the mV offset at pH 7.00 and the number of calibration
points. Review the calibration data, then push pH or STORE to start reading the pH value of
another solution.
13. If the meter is setup for a 3-point calibration, do steps 1 through 12 until all the calibration points
are set.
Set the conductivity and TDS options
Set the options for conductivity and TDS: conductivity calibration points, conductivity temperature
compensation, conductivity temperature, cell constant, TDS conversion factor, TDS units and salinity
units in ppm or as a percentage. Complete the operations in order:
1. Set the power to on.
2. Push SETUP, then COND or TDS to put the meter in conductivity or TDS setup modes.
3. Use the arrow keys to select an option, then push ENTER:
Operation Function
Conductivity calibration point Keeps up to five calibration points.
• Use the arrow keys to select each option, then push
ENTER.
• The first active calibration point shows. Use the
arrow keys to see other in-use values.
Note: "- - - -" shows on the display if there are no stored
conductivity calibration points.
Conductivity temperature1• Shows the conductivity normalization value.
• Use the display settings between 20 to 25 °C
(default = 25 °C).
Conductivity probe cell constant The cell constant is automatically found and shown on
the display. Sets the cell constants to:
• K = 0.5 for general procedures
• K = 1 for low conductivity procedures (e.g., drinking
water)
• K = 10 for salinity or brackish water
• If no conductivity probe is attached, the display
shows "000."
TDS conversion factor • TDS values are related to conductivity. Calibrate
with a TDS standard or with conductivity standards,
then set the meter with a conversion factor.
• Sets the conversion factor to 0.40 to 1.00 (default =
0.50).
English 13

Operation Function
TDS units Use the arrow keys to set the TDS units to mg/L (gal/L)
or ppm (ppt).
Salinity units in ppm (ppt) or % Use the arrow keys to set the salinity units to ppm (ppt)
or as a percentage.
1Conductivity varies a lot with temperature. The conductivity automatic temperature compensation (ATC)
adjusts conductivity measurements to calculate the conductivity changes in the reading that are caused by
temperature. The readings are referenced to or "normalized" at a standard temperature. The ATC gives the
equivalent conductivity or TDS of a solution normalized at 20 or 25 °C.
4. Push ENTER to keep the changes and go back to setup mode.
Note: To exit and not keep the changes, push SETUP.
Calibrate for conductivity and TDS measurement
Calibrate the meter with up to five calibration points with conductivity or TDS standards. If the
calibration point is 20% larger than a calibration point in storage, both conductivity points are kept. If
the calibration point is 20% smaller than a calibration point in storage, only the new calibration point
is kept. If there are five calibration points in storage, the new calibration data replaces values near
the same range.
By default, the meter uses the temperature coefficient of 2% per °C. The user can set the coefficient
in setup mode. Review calibration points in setup mode.
Note: Salinity measurements are identified from conductivity.
1. Set the power to on.
2. Push COND or TDS.
3. Put the probe in the first standard solution. The meter measures the standard.
4. Use the arrow keys to select the value of the conductivity or TDS standard.
5. Push ENTER. The main display shows, then the "WAit" icon flashes.
Note: Push TDS or COND to stop calibration. The meter stops the current calibration and keeps the previous
calibration data.
6. Push CAL. The main value flashes.
7. To erase all previous calibration points, slopes and offset values, push CAL, then DELETE.
Ignore this step to update a previous calibration with a single point calibration.
8. Push COND or TDS to read the conductivity or TDS value of any solution.
9. Do steps 2 through 9 again to complete multiple calibration points (maximum of 5).
10. When the calibration is complete, the meter shows the slope as compared to the nominal
sensitivity for a probe of that cell constant and the total number of conductivity and TDS
calibration points in the meter.
Note: The number at the bottom right corner of the display is the calibration points that are in the meter. The
value above the slope is the slope relative to the nominal sensitivity.
Maintenance
Replace the batteries
The screen reads "bAt" when the batteries are too low to give a reliable measurement. The low
battery icon shows when there is approximately 25 hours of battery power. Measurement errors are
possible when the batteries are low. Refer to Install the batteries on page 7 to replace the batteries.
Clean the instrument
Clean the exterior of the instrument with a moist cloth and a mild soap solution and then wipe the
instrument dry.
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ISFET pH probe maintenance
CAUTION
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the
document.
CAUTION
Chemical exposure hazard. Obey laboratory safety procedures and wear all of the personal protective
equipment appropriate to the chemicals that are handled. Refer to the current safety data sheets
(MSDS/SDS) for safety protocols.
The expected life of an ISFET probe is approximately 18 months. The reference electrode has a KCI
gel that is diluted over time. The reference is sealed and is non-refillable. Replace the probe when it
becomes difficult to calibrate.
• Keep the probe dry with the protective shroud on when not in use.
• Clean oil, fat, food particles, starch, protein or other materials from the probe tip after use.
• Never use sharp metal objects (e.g., a needle, a pin, etc.) to clean the sensor surface.
• Remove the probe from environments with static electricity. Electrostatic discharge (ESD) can
permanently damage the probe.
• Remove the probe from environments that will damage the sensor, such as hydrofluoric acid or
abrasive samples.
• Remove the probe from environments that will damage the epoxy materials used in the probe tip
(e.g., keep the probe away from acetone, toluene, methylene chloride, xylene and other strong
organic solvents).
• Do not use the probe in temperatures more than 60 ºC (140 ºF). Thermal cycling can decrease the
life of the probe.
• For semi-solids use, carefully twist the probe to make sufficient contact with the sample to the
sensor.
• When semi-solids are tested, make sure that solid objects (i.e., bone or gristle) do not scratch the
sensor.
• Cool samples to room temperature to maximize probe life.
• Always use new buffers and new rinse solutions.
Prepare the probe for storage
N O T I C E
Do not use the probe for long-term pH measurement applications.
Note: No electrode storage solution is necessary.
A new probe usually has visible reference gel at the tip of the probe, as well as in the interior of the
rubber dust cap. To remove the gel, carefully clean with a soft-bristled toothbrush and mild soapy
water (a few drops of dish soap in a warm cup of water). The gel can continue to show for two to five
days. Do not put the rubber dust cap on the probe until all of the reference gel is removed. Do not
complete the steps that follow until all reference gel is removed from the probe and the interior and
exterior of the rubber dust cap.
Prepare the probe for storage
1. Put the new probe (or the probe that was in extended storage) in pH 7 buffer for at least
5 minutes.
2. Stir the probe in pH 7 buffer solution to dislodge air bubbles.
3. Use fresh deionized water to rinse the probe.
4. Dry the probe with a lint-free cloth.
English 15

5. Put the rubber dust cap back on.
6. Keep the probe in dry storage when not in use.
Calibrate the ISFET probe
Refer to Prepare the probe for storage on page 15 before calibration.
N O T I C E
Do not use the probe for applications that cycle between hot and room temperature samples.
Note: Remove other active or non-active measurement devices during pH or conductivity measurement. Other
devices, even AC power, can cause interference.
Note: Only do calibrations away from the sun. Direct sunlight can cause unstable readings or difficulty in
calibration.
1. Connect the probe to the meter.
2. Set the meter power to on.
3. Clean the probe with new deionized water and dry with a lint-free cloth.
4. Put the probe in the pH 7 buffer.
5. Clean the probe with deionized water and dry with a lint-free cloth.
6. Put the probe in the second buffer (pH 4 or pH 10).
7. Read the results.
8. If the result is not correct, the probe is not correctly hydrated.
Soak the probe for another 5 minutes in pH 7 buffer, then do the calibration again.
Clean the ISFET probe
N O T I C E
Do not use sharp metal objects (a needle, a pin, etc.) to clean the sensor. This can scratch the sensor and cause
permanent damage to the probe.
For use in dairy, cheese or meat applications, soak the probe in Pepsin Cleaning Solution for
15 minutes before the probe is cleaned.
Regularly clean a non-glass probe:
1. Remove the rubber dust cap from the probe, then rinse with new deionized water.
2. Use a soft-bristle toothbrush and a mild detergent (a few drops of dish soap in a warm cup of
water) to carefully clean the probe.
3. Rinse with new deionized water to remove all debris from the sensor surface.
4. Dry the probe with a lint-free cloth.
5. Calibrate the probe again. Refer to Calibrate the ISFET probe on page 16, then Prepare the
probe for storage on page 15.
Repair the ISFET probes
N O T I C E
Do not use the probe to find out if the buffer is above 60 °C (140 °F). If the probe is suddenly put into very hot
liquid, the probe can be permanently damaged.
Monitor how long the probes are in dry storage. If the probes are in storage for an extended period of
time, the KCI gel at the reference junction can crystallize.
1. Heat pH 7 buffer to approximately 45 to 60 °C (115 to 140 °F).
2. Soak the probe for 2 minutes.
3. Put the probe in room temperature pH 7.00 buffer and let cool.
16 English

BNC electrode maintenance
Prevent unstable readings:
• Keep the probe in an electrode storage solution.
• Start measurements with at least a 2-point calibration. Update often with 1, 2 or 3-point
calibrations.
• Use new buffers and new deionized rinse solution.
• Use buffer solutions with pH values no larger than 3 pH units apart. Ideally, the buffers bracket the
anticipated pH values of the unmeasured samples.
• Use deionized water to rinse residual buffer and sample solutions from the probe after calibration
and measurement.
• Calibrate at the same temperature as the sample solution. Although the meter has an ATC, get the
best results when the calibration buffers and the sample are the same temperature.
• Keep the connectors clean and dry. Dirty or damp connectors can cause unstable readings.
Troubleshooting
Problem Possible cause Solution
No display Automatic shutdown set the
power to off.
Set the power to on again.
There is no power. Replace the batteries.
Unstable reading The probe is dirty. Clean the probe.
The probe or the meter
connectors are dirty.
Clean the probe contacts on the
cable connector. Clean the meter
with methanol on a cotton swab. Let
dry completely. Connect the probe to
the meter again.
No flow in the reference junction Clean the warm buffer.
ISFET probe is not properly
hydrated.
Soak the probe for at least 5 minutes
in a pH 7.00 buffer.
Interference from other devices Remove other devices from the
solution.
Interference from direct sunlight Use protection for the probe from
direct sunlight.
The probe is in a very low ionic
strength solution.
A stable reading is not possible.
The pH or temperature of the
solution changes.
A stable reading is not possible until
pH and temperature are constant.
English 17

Problem Possible cause Solution
The pH or temperature of the solution
changes.
The probe sensor surfaces are
dirty or the probe needs to be
conditioned again.
Clean and condition the probe again.
No flow in the reference junction Clean the warm buffer.
The buffers are contaminated or
expired.
Calibrate with new buffers again.
Interference from other devices in
solution
Remove other devices from the
solution.
The battery is low. Replace the batteries if the battery
icon shows low battery power.
Interference from direct sunlight.
Out of calibration.
Use protection for the probe from
direct sunlight.
The probe is too old. Replace the probe.
The meter continually shows 14.00 or
0.00 with an electrode attached. The
"ISFET" icon does not show when an
ISFET probe is attached.
The ISFET probe is not sensed
by the meter or the probe.
Set the meter power to off. If the
ISFET icon does not show, replace
the ISFET probe.
Out of calibration. Calibrate the ISFET probe
on page 16
The probe is not in the solution. Put the probe in liquid. Carefully
shake the probe to make sure that air
bubbles are not caught on the sensor
surface.
The probe is dirty. Clean the probe.
The probe is damaged. Replace the probe. Contact technical
support.
Error codes
Table 2 shows what codes can occur for various reasons. Error codes can show instrument
malfunction or user error.
Table 2 Error code descriptions
Error code Description Solution
E03 Glass electrode offset error. Clean the probe. If the error
continues, contact technical support
to replace the probe.
E04 Glass electrode slope error. Clean the probe. If the error
continues, contact technical support
to replace the probe.
E06 ISFET pH probe slope error. Clean the probe. Soak in 40 ºC
(113 ºF) pH 7.00 buffer for
2 minutes. Try calibration again. If
the error continues, contact
technical support to replace the
probe.
E08 Too long to calibrate. Signal is not
stable during calibration.
Clean the probe. Disconnect stirrers
and other AC power sources. Make
sure that calibration solution
temperature is constant. If the error
continues, contact technical support
to replace the probe.
18 English

Table 2 Error code descriptions (continued)
Error code Description Solution
E13 The ISFET pH probe temperature
sensor is out of range.
Replace the probe. Contact
technical support for probe
replacement information.
E20 The conductivity probe temperature
sensor is out of range.
Replace the probe. Contact
technical support for probe
replacement information.
Replacement parts and accessories
WARNING
Personal injury hazard. Use of non-approved parts may cause personal injury, damage to the
instrument or equipment malfunction. The replacement parts in this section are approved by the
manufacturer.
Note: Product and Article numbers may vary for some selling regions. Contact the appropriate distributor or refer to
the company website for contact information.
Replacement parts
Description Quantity Item no.
AA Alkaline batteries 4 1938004
Accessories
Description Quantity Item no.
ISFET pH probes
General purpose round tip probe 1 PH77-SS
Micro pH probe 1 PH17-SS
Piercing tip micro pH probe 1 PH37-SS
pH probe for NMR tubes 1 PH47-SS
Heavy duty piercing tip micro pH probe 1 PH57-SS
Conductivity probes
General purpose conductivity probe, epoxy, K = 0.5 4 graphite contacts CDW97-KP5
LIS conductivity probe, glass, K = 1 4 platinum contacts CDW97-K1
Conductivity probe for salinity and brackish water, epoxy, K =
10 4 contacts CDW97-K10
Glass pH probes
Gel-filled combination pH, BNC and 3.5 mm phone [phone]
Pt Series combination pH, BNC and 3.5 mm phone [phone]
Refillable combination pH, BNC and 3.5 mm phone [phone]
English 19

Consumables
Description Quantity Item no.
Probe cleaning solution for removal of protein deposits on pH probes 500 mL 2964349
Rinse solution, non-ionic surfactant 500 mL 2964449
Buffer solution, red, pH 4.01 500 mL 2283449
Buffer solution, yellow, pH 7.00 500 mL 2283549
Buffer solution, blue, pH 10.01 500 mL 2283649
Conductivity standard solution, 100 μS/cm 500 mL 2971849
Conductivity standard solution, 1000 μS/cm 500 mL 1440049
Conductivity standard solution, 10,000 μS/cm 500 mL 2972249
Conductivity standard solution of 35 ppt salinity, 53 mS/cm 500 mL 2714349
Conductivity standard solution, 100 μS/cm 100 mL 2971842
Conductivity standard solution, 1000 μS/cm 100 mL 1440042
Conductivity standard solution, 10,000 μS/cm 100 mL 2972242
20 English