Hanna Instruments HI 8014 User manual

Instruction Manual
HI 8014 - HI 8314
HI 8424 - HI 8915
HI 9214 - HI 931000
HI 9622
Portable
pH Meters
http://www.hannainst.com TheseInstrumentsarein
Compliancewith theCE Directives

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2
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
Remove the instrument from the packing material and examine it
carefully to make sure that no damage has occurred during ship-
ment. If noticeable damage is found, notify your Dealer.
Note: Save all packing material until you are sure that the
instrument functions correctly. Any defective items must be
returned in the original packing together with the supplied
accessories.
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTION
HI 8014, HI 8314, HI 8424, HI 8915,HI 931000 andHI 9622
are hand-held pH/mV meters. HI 9214 is a compact stick pH meter
designed to be carried anywhere.
Common features are: interchangeable plastic-body electrodes, simple
controls on the front panel, low battery detector, large easy-to-read
LCD display, simple calibration procedure and lightweight ABS plastic
housing.
•HI 8014 is an affordable portable pH/mV meter ideally suited
for the educational field. The pH or mV ranges are easily selected
with a rotary knob. A °C range is also provided for manual
temperaturecompensation.HI 8014comessuppliedwith:HI 1332B
combination, double-junction, refillable pH electrode and a 9 volt
battery.
•HI 8314is a pH/mV/°C meter designed for simplicity of use in
taking pH, mV (ORP) and temperature measurements. The pH,
mV and °C ranges are easily selected using a membrane
keyboard on the front panel. Temperature compensation of pH is
automatic when the temperature probe is connected and calibra-
tion adjustments are easily made with two trimmers on the front
panel. HI 8314 comes supplied with: HI 1230B combination,
double-junction,gelpHelectrode,HI7669AWtemperature probe,
a 9 volt battery and a calibration screwdriver.
•HI 8424isaportablemicroprocessor-basedpH/mV/°C meter.It
features a user-friendly membrane keyboard, automatic calibra-
tion and error codes to guide the user in calibration and
troubleshooting. The meter has three memorized buffer values:
ISO 9000 Certified
Company since 1992
DearCustomer,
Thank you for choosing a Hanna product.
Please read this instruction manual carefully before using the meter.
This manual will provide you with the necessary information for a
correct use of the instrument, as well as a more precise idea of its
versatility. If you need additional technical information, do not
hesitate to e-mail us at [email protected].
These instruments are in compliance with the directives
EN 50081-1 and EN 50082-1.
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTS
PRELIMINARY EXAMINATION........................................................3
GENERAL DESCRIPTION ................................................................3
FUNCTIONALDESCRIPTIONHI8014.............................................5
SPECIFICATIONSHI 8014 ............................................................6
FUNCTIONALDESCRIPTIONHI8314.............................................7
SPECIFICATIONSHI 8314 ............................................................8
FUNCTIONALDESCRIPTIONHI8915.............................................9
SPECIFICATIONSHI 8915 ..........................................................10
FUNCTIONALDESCRIPTIONHI9214...........................................11
SPECIFICATIONSHI 9214 ..........................................................12
FUNCTIONALDESCRIPTIONHI8424...........................................13
SPECIFICATIONSHI 8424 ..........................................................14
FUNCTIONALDESCRIPTION HI 931000.......................................15
SPECIFICATIONSHI 931000 ......................................................16
FUNCTIONALDESCRIPTIONHI9622...........................................17
SPECIFICATIONSHI 9622 ..........................................................18
OPERATIONAL GUIDE .................................................................19
pH CALIBRATION.......................................................................25
pH VALUES AT VARIOUS TEMPERATURES...................................35
TEMPERATURE CALIBRATION ......................................................36
mV OUTPUT..............................................................................36
TROUBLESHOOTING GUIDE ........................................................37
ELECTRODE CONDITIONING AND MAINTENANCE...........................39
TAKING REDOX MEASUREMENTS.................................................42
BATTERYREPLACEMENT ..............................................................43
DISPLAY CODES GUIDE...............................................................44
ACCESSORIES.............................................................................45
ELECTRODE APPLICATIONREFERENCE GUIDE ................................52
WARRANTY ................................................................................53
OTHER PRODUCTS FROM HANNA...............................................54
CE DECLARATION OF CONFORMITY..............................................55

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FUNCTIONAL DESCRIPTION HI 8014FUNCTIONAL DESCRIPTION HI 8014
FUNCTIONAL DESCRIPTION HI 8014FUNCTIONAL DESCRIPTION HI 8014
FUNCTIONAL DESCRIPTION HI 8014
1) BNC socket for combination pH electrodes.
2) LCD display.
3) Rotary Knob with the following selectable positions:
OFF To switch the meter off (in any other position the
instrument is on).
°C To display the manual temperature setting (through
°Ctrimmer).
pH To display the pH value.
mV To display the mV (ORP) readings when using an
ORP electrode or the mV equivalent to the pH values
when using a pH electrode.
4) Trimmers:
°C To set temperature manually.
mV/pH For SLOPE calibration of pH.
AP For OFFSET calibration of pH.
ins rum ns
pH
pH meter HI 8014
°C mV/pH AP
pH
°C
OFF mV
2
1
3
4
pH4.01, pH 7.01 and pH 10.01. It can also be used for ISE
and ORP measurements with automatic range switching when
readings exceed ±399.9 mV. HI 8424 comes supplied with:
HI1230B combination, double-junction, gel pH electrode,
HI 7669AW temperature probe and a 9 volt battery.
•HI 8915 is a portable pH/mV/°C meter that combines accurate
pH measurements with a recorder output capability and auto-
matic temperature compensation. Two recorder output terminals
make it possible to attach a plotter or recorder directly to the
meter for a hard copy of the measurements. Pressing the HOLD
key will freeze the reading on the display. Calibration is per-
formed using the two trimmers on the front panel. HI 8915
comes supplied with: HI 1230B combination, double-junction,
gel pH electrode, HI 7669AW temperature probe, a 9 volt
battery and a calibration screwdriver.
•HI 9214 is a compact microprocessor-based pH/°C meter. The
electrode has a built-in temperature sensor for quick and accurate
temperature measurements and temperature compensation. The
meter has three memorized buffer values (pH 4.01, pH 7.01, pH
10.01) and automatic buffer recognition to avoid errors during
calibration. There are no trimmers making calibration an easy
process,evenfor nontechnicalpersonnel.HI 9214comes supplied
with: HI1217S screw-type combination gel pH/°C electrode, a 9
volt battery and HI710003 soft carrying case.
•HI 931000isacompact, microprocessor-basedpH/°C meterwith
4-in-1 pH electrode (pH/°C electrode with built-in temperature
sensor and signal amplifier). Special shockproof rubberboots are
also available to prolong the life of the meter and to prevent
damage(seepage51).HI 931000comessuppliedwith:HI 1217D
combination gel pH/°C electrode, with a built-in temperature
sensor and signal amplifier, a 9 volt battery and HI710004 soft
carrying case.
•HI 9622 is a portable microprocessor-based pH/mV/°C meter
which meets the GLP (Good Laboratory Practice) requirements
and memorizes the last calibration date. The meter has three
memorized buffer values: pH 4.01, pH 7.01 and pH 10.01. The
meter can also be used for ISE and ORP measurements with
automatic range switching when readings exceed ±399.9 mV.
HI 9622 comes supplied with: HI 1230B combination, double-
junction, gel pH electrode, HI 7669/2W temperature probe and
a 9 volt battery.

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FUNCTIONAL DESCRIPTION HI 8314FUNCTIONAL DESCRIPTION HI 8314
FUNCTIONAL DESCRIPTION HI 8314FUNCTIONAL DESCRIPTION HI 8314
FUNCTIONAL DESCRIPTION HI 8314
1) BNC socket for combination pH or ORP electrodes.
2) LCD display.
3) mV to display the mV (ORP) readings when using an ORP
electrode or the mV equivalent to pH values when using a
pH electrode.
4) STD trimmer for OFFSET calibration of pH.
5) Phono plug socket for temperature probe HI 7669AW.
6) ON/OFF to switch the instrument on or off.
7) pH to display the pH value.
8) °C to display the temperature measurement (when the
temperature probe is disconnected, the LCD will show 25°C).
9) SLOPE trimmer for SLOPE calibration of pH.
1
5
2
7
38
49
6
pH
ON
OFF
mV °C
pH
HI 8314
membrane
pHmeter
STD
1nd
Calibration at pH
6.86 or 7.01
SLOPE
2nd
Calibration at pH
4.01 or 10.01
CALIBRATION
HI 8014
Range pH 0.00 to 14.00
mV 0 to ±1999
Resolution pH 0.01
mV 1
Accuracy pH ±0.01
(@20°C/68°F) mV ±1
Typical EMC pH ±0.05
Deviation mV ±8
pH Calibration Manual 2 point through
offset and slope trimmers
Offset Calibration ±1 pH
Slope Calibration from 85 to 105%
Temperature Manual from 0 to 100°C
Compensation (32to212°F)
Electrode HI 1332Bcombination,double-junction,
refillablepH electrode BNC
and 1 m (3.3') cable (included)
Input Impedance 1012 ohm
Battery Type 1 x 9 volt
Life 100 hours of continuous use
Environment 0 to 50°C (32 to 122°F);
max 95% RH non-condensing
Dimensions 185 x 82 x 45 mm
(7.3 x 3.2 x 1.8")
Weight 520 g (1.1 lb.)
SPECIFICATIONS HI 8014SPECIFICATIONS HI 8014
SPECIFICATIONS HI 8014SPECIFICATIONS HI 8014
SPECIFICATIONS HI 8014

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FUNCTIONAL DESCRIPTION HI 8915FUNCTIONAL DESCRIPTION HI 8915
FUNCTIONAL DESCRIPTION HI 8915FUNCTIONAL DESCRIPTION HI 8915
FUNCTIONAL DESCRIPTION HI 8915
1) BNC socket for combination pH or ORP electrodes.
2) LCD display.
3) HOLD to freeze the reading on the display.
4) mV to display the mV (ORP) readings when using an ORP
electrode or the mV equivalent to the pH values when using
a pH electrode.
5) OFFSET trimmer for OFFSET calibration of pH
6) + recorder output (mV output, positive connection).
7) Phono plug socket for temperature probe HI 7669AW.
8) ON/OFF to switch the instrument on or off.
9) pH to display the pH value.
10) °C to display the temperature measurement (when the
temperature probe is disconnected, the LCD will show 25°C).
11) SLOPE trimmer for SLOPE calibration of pH.
12) -recorder output (mV output, negative connection).
pH
ON
OFF
HOLD
mV
°C
pH
HI 8915
ATC
pHmeter
+-
mV OUTPUT
SLOPE
4.01
10.01
OFFSET
6.86
7.00
CALIBRATION
1
7
2
9
410
511
8
3
612
SPECIFICATIONS HI 8314SPECIFICATIONS HI 8314
SPECIFICATIONS HI 8314SPECIFICATIONS HI 8314
SPECIFICATIONS HI 8314
HI 8314
Range pH 0.00 to 14.00
mV 0 to ±1999
°C 0.0 to 100.0
Resolution pH 0.01
mV 1
°C 0.1
Accuracy pH ±0.01
(@20°C/68°F) mV ±1
°C ±0.4
Typical EMC pH ±0.05
Deviation mV ±5
°C ±1
pH Calibration Manual 2 point through
offset and slope trimmers
Offset Calibration ±1 pH
Slope Calibration from 85 to 105%
Temperature Automatic from 0 to 70°C (32 to 158°F)
Compensation or fixed at 25°C (77°F)
with temperature probe detached
Electrode HI 1230Bcombination,double-junction,
gel-filled pH electrode BNC
and 1 m (3.3') cable (included)
Temperature HI 7669AW (included)Probe
Input Impedance 1012 ohm
Battery Type 1 x 9 volt
Life 100 hours of continuous use
Environment 0 to 50°C (32 to 122°F);
max 95% RH non-condensing
Dimensions 185 x 82 x 45 mm
(7.3 x 3.2 x 1.8")
Weight 570 g (1.3 lb.)

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FUNCTIONAL DESCRIPTION HI 9214FUNCTIONAL DESCRIPTION HI 9214
FUNCTIONAL DESCRIPTION HI 9214FUNCTIONAL DESCRIPTION HI 9214
FUNCTIONAL DESCRIPTION HI 9214
1) °C button, located on the top of the meter, to display
temperature measurements.
2) CFM to confirm calibration values.
3) CAL to enter calibration mode or to select buffer.
4) ON/OFF to switch the instrument on or off.
5) LCD display.
6) Screw-type socket for combination pH electrode with built-in
temperature sensor.
ins
e
rum ns
ON
OFF
CAL
CFM
pH
HI 9214 stick pHmeter
1
2
3
4
5
6
HI 8915
Range pH 0.00 to 14.00
mV 0 to ±1999
°C 0.0 to 100.0
Resolution pH 0.01
mV 1
°C 0.1
Accuracy pH ±0.01
(@20°C/68°F) mV ±1
°C ±0.5
Typical EMC pH ±0.02
Deviation mV ±1
°C ±0.8
pH Calibration Manual 2 point through
offset and slope trimmers
Offset Calibration ±1 pH
Slope Calibration from 85 to 105%
Temperature Automatic from 0 to 70°C (32 to 158°F)
Compensation or fixed at 25°C (77°F)
with temperature probe detached
Electrode HI 1230Bcombination,double-junction,
gel-filled pH electrodeBNC
and 1 m (3.3') cable (included)
Temperature HI 7669AW (included)Probe
Input Impedance 1012 ohm
Recorder Output 100 mV/pH
1mV/mV
10mV/°C
Battery Type 1 x 9 volt
Life 100 hours of continuous use
Environment 0 to 50°C (32 to 122°F);
max 95% RH non-condensing
Dimensions 185 x 82 x 45 mm
(7.3 x 3.2 x 1.8")
Weight 570 g (1.3 lb.)
SPECIFICATIONS HI 8915SPECIFICATIONS HI 8915
SPECIFICATIONS HI 8915SPECIFICATIONS HI 8915
SPECIFICATIONS HI 8915

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FUNCTIONAL DESCRIPTION HI 8424FUNCTIONAL DESCRIPTION HI 8424
FUNCTIONAL DESCRIPTION HI 8424FUNCTIONAL DESCRIPTION HI 8424
FUNCTIONAL DESCRIPTION HI 8424
1) BNC socket for combination pH or ORP electrodes.
2) LCD display.
3) RANGE to select the pH, °C or mV range.
4) UP arrow to set temperature manually when the
temperature probe is disconnected.
5) CAL to enter calibration mode.
6) Phono plug socket for temperature probe HI 7669AW.
7) ON/OFF to switch the instrument on or off.
8) DOWN arrow to set temperature manually when the
temperature probe is disconnected.
9) CFM to confirm calibration data.
HI 9214
Range pH 0.00 to 14.00
°C 0.0 to 70.0
Resolution pH 0.01
°C 0.1
Accuracy pH ±0.02
(@20°C/68°F) °C ±0.5
Typical EMC pH ±0.08
Deviation °C ±1
pH Calibration Automatic 2 point with
3 memorized standard buffers
(pH 7.01, 4.01 or 10.01)
Offset Calibration ±1 pH
Slope Calibration from 85 to 105%
Temperature Automatic from 0 to 70°C
Compensation (32to158°F)
Electrode HI 1217Sgelcombination
pH/°C(included)
Input Impedance 1012 ohm
Battery Type 1 x 9 volt
Life 100 hours of continuous use
Auto-off after 8 minutes of non-use
Environment 0 to 50°C (32 to 122°F);
max 95% RH non-condensing
Dimensions 185 x 42 x 26 mm
(7.3 x 1.6 x 1.0")
Weight 350 g (12.3 oz.)
SPECIFICATIONS HI 9214SPECIFICATIONS HI 9214
SPECIFICATIONS HI 9214SPECIFICATIONS HI 9214
SPECIFICATIONS HI 9214

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FUNCTIONAL DESCRIPTION HI 931000FUNCTIONAL DESCRIPTION HI 931000
FUNCTIONAL DESCRIPTION HI 931000FUNCTIONAL DESCRIPTION HI 931000
FUNCTIONAL DESCRIPTION HI 931000
ins rum ns
CFM
°C
CAL
OFF
ON
HI 931000
1
2
3
4
5
6
1) DIN socket for combination pH/°C electrode.
2) LCD display.
3) ON/OFF to switch the instrument on or off.
4) °C to display the measured temperature (press and hold).
5) CAL to enter calibration mode.
6) CFM to confirm calibration data.
SPECIFICATIONS HI 8424SPECIFICATIONS HI 8424
SPECIFICATIONS HI 8424SPECIFICATIONS HI 8424
SPECIFICATIONS HI 8424
HI 8424
Range pH 0.00 to 14.00
ISE 0.0 to ±399.9 mV
ORP ±400 to ±1999 mV
°C 0.0 to 100.0
Resolution pH 0.01
ISE 0.1mV
ORP 1mV
°C 0.1
Accuracy pH ±0.01
(@20°C/68°F) ISE ±0.2mV
ORP ±1mV
°C ±0.4
Typical EMC pH ±0.02
Deviation ISE ±0.2
ORP ±1
°C ±0.4
pH Calibration Automatic 2 point with
3 memorized standard buffers
(pH 7.01, 4.01 or 10.01)
Offset Calibration ±1.0 pH
Slope Calibration from 70 to 108%
Temperature Automatic from 0 to 100°C (32 to 212°F)
Compensation or manual without temperature probe
Electrode HI 1230Bcombination,double-junction,
gel pH electrode BNC
and 1 m (3.3') cable (included)
Temperature HI 7669AW (included)Probe
Input Impedance 1012 ohm
Battery Type 1 x 9 volt
Life 100 hours of continuous use
Environment 0 to 50°C (32 to 122°F);
max 95% RH non-condensing
Dimensions 185 x 82 x 45 mm
(7.3 x 3.2 x 1.8")
Weight 520 g (1.1 lb.)

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FUNCTIONAL DESCRIPTION HFUNCTIONAL DESCRIPTION H
FUNCTIONAL DESCRIPTION HFUNCTIONAL DESCRIPTION H
FUNCTIONAL DESCRIPTION HII
II
I
96229622
96229622
9622
1) BNC socket for combination pH or ORP electrode.
2) LCD display.
3) RANGE to select the pH, °C or mV range.
4) UP arrow to set the month and day for calibration data
recall and the temperature for manual compensation (when
the temperature probe is disconnected).
5) CAL to enter calibration mode.
6) Socket for temperature probe HI 7669/2W.
7) ON/OFF to switch the instrument on or off.
8) DOWN arrow to set the month and day for calibration data
recall and the temperature for manual compensation (when
the temperature probe is disconnected).
9) CFM to confirm calibration data.
HI 931000
Range pH 0.00 to 14.00
°C 0.0 to 70.0
Resolution pH 0.01
°C 0.1
Accuracy pH ±0.01
(@20°C/68°F) °C ±0.5
Typical EMC pH ±0.30
Deviation °C ±1
pH Calibration Automatic 2 point with
3 memorized standard buffers
(pH 7.01, 4.01, 10.01)
Temperature Automatic from 0 to 70°C
Compensation (32to158°F)
Electrode HI 1217Dcombination4-in-1gel
pH electrode with built-in temperature
sensor and amplifier (included)
Battery Type 1 x 9 volt
Life 300 hours of continuous use
Auto-off after 8 minutes of non-use
Environment 0 to 50°C (32 to 122°F);
max 95% RH non-condensing
Dimensions 143 x 80 x 38 mm
(5.6 x 3.2 x 1.5")
Weight 360 g (12.7 oz.)
SPECIFICATIONS HI 931000SPECIFICATIONS HI 931000
SPECIFICATIONS HI 931000SPECIFICATIONS HI 931000
SPECIFICATIONS HI 931000

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OPERATIONAL GUIDEOPERATIONAL GUIDE
OPERATIONAL GUIDEOPERATIONAL GUIDE
OPERATIONAL GUIDE
INITIAL PREPARATION
Each meter is supplied complete with a 9V battery. Slide off the
battery compartment cover on the back of the meter (see page 43),
install the battery while paying attention to its polarity.
Always remove the electrode protective cap before taking any mea-
surements. If the electrode has been left dry, soak the tip (bottom
4cm/1½") in a pH 7 or pH 4 buffer solution for a few minutes to
reactivate it.
For HI 8014:
Connect the pH electrode to the BNC socket on the top of the meter.
Turn the meter on by turning the rotary knob to the °C, pH or mV
position.
For HI 8314, HI 8915, HI 8424 and HI 9622:
Connect the pH electrode to the BNC socket on
the top of the instrument. Connect the tem-
perature probe to the socket. The temperature
probe can be used independently to take tem-
perature measurements, or it can be used in
conjunction with the pH electrode to utilize the
meter's ATC capability. With HI 8424 and
HI 9622, whentheprobe isdisconnected,tem-
perature can also be set manually (see page
22).
Turn the meter on by pressing ON/OFF.
WithHI 9622,thedisplaywillshow theprevi-
ous calibration date (month & date) for 3
seconds.
For HI 9214:
Connectthe pH electrode to the screw type connector on the meter. Be
sure that the electrode and the meter connections are clean and dry
to ensure a positive contact. Turn the meter on by pressing
ON/OFF.
CAL month day
ON
OFF
TOP VIEW BNC
electrode
connector
OFF mV
°C pH
ON
OFF
ins
e
rum ns
ON
OFF
CAL
CFM
pH
HI 9214 stick pHmeter
SPECIFICATIONS HI 9622SPECIFICATIONS HI 9622
SPECIFICATIONS HI 9622SPECIFICATIONS HI 9622
SPECIFICATIONS HI 9622
HI 9622
Range pH 0.00 to 14.00
ISE 0.0 to ±399.9 mV
ORP ±400 to ±1999 mV
°C 0.0 to 100.0
Resolution pH 0.01
ISE 0.1mV
ORP 1mV
°C 0.1
Accuracy pH ±0.01
(@20°C/68°F) ISE ±0.2mV
ORP ±1mV
°C ±0.4
Typical EMC pH ±0.01
Deviation ISE ±0.2mV
ORP ±1mV
°C ±0.5
pH Calibration Automatic 2 point with
3 memorized standard buffers
(pH 7.01, 4.01 or 10.01)
Offset Calibration ±1.0 pH
Slope Calibration from 70 to 108%
Temperature Automatic from 0 to 100°C (32 to 212°F)
Compensation or manual without temperature probe
Electrode HI 1230Bcombination gel pHelectrode
BNC and 1 m (3.3') cable (included)
Temperature HI 7669/2W (included)
Probe
Input Impedance 1012 ohm
Battery Type 1 x 9 volt
Life 100 hours of continuous use
Environment 0 to 50°C (32 to 122°F);
max 95% RH non-condensing
Dimensions 185 x 82 x 45 mm
(7.3 x 3.2 x 1.8")
Weight 520 g (1.1 lb.)

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For HI 9214 and HI 931000: TotakeapH
measurement simply submerge the tip (4cm/
1½") of the combination pH/temperature
electrode into the sample to be tested.
Turn the instrument ON. Select the pH mode
(HI 8314 and HI 8915 only) or press the
RANGE key until the display changes to pH
(HI 8424 andHI 9622only).
Shaketheelectrode brieflyandallowacouple
of minutes for the electrode to adjust and
stabilize. The display will show the pH value
compensated for temperature.
For HI 9214 and HI 931000:
Aftersubmergingtheelectrodeintothesample
to be tested, wait until the stability indicator
"∆" stops blinking. The pH readout is also
temperature compensated.
In order to take accurate pH measurements, make sure that the
instrument is calibrated for pH before use (see page 25).
For a faster response time when using refillable electrodes,
unscrew the refill hole cap.
If measurements are taken in different samples successively, it is
recommended to rinse clean the electrode thoroughly to eliminate
cross-contamination. After cleaning, it is recommended to rinse the
electrode with some of the sample to be measured.
TEMPERATURE COMPENSATION
The pH reading is directly affected by temperature. In order for the
meter to measure the pH accurately temperature must be taken into
consideration.
HI 9214 and HI 931000 use an electrode with a built-in tempera-
ture sensor and therefore no additional temperature probe is needed.
To use the Automatic Temperature Compensation feature of HI 8314,
HI 8424, HI 8915 and HI 9622, submerge the temperature probe
into the sample as close to the electrode as possible and wait for a
couple of minutes. The displayed pH reading is compensated for the
temperature variance associated with the effects of temperature upon
the electrode.
If you know the temperature of the sample you can also manually
4 cm
(1½")
RANGE
pH
∆
For HI 931000:
Attach the pH/°C electrode to the DIN socket on the top of the meter,
tighten the retainer ring and turn the meter on by pressing ON/OFF.
TAKING pH MEASUREMENTS
For HI 8014:
To take a pH measurement simply submerge
the tip (4cm/1½") of the electrode and a
ChecktempC (or an accurate thermometer) into
the sample to be tested.
Turn the rotary knob to the °C position to
display temperature setting on the LCD.
Measure the temperature of the sample with a
ChecktempC(oran accuratethermometer),e.g.
25°C.
Using the provided screwdriver, turn the temperature trimmer to
display the measured temperature value.
Turn the rotary knob to the pH position to
display the pH measurement.
Shake the electrode briefly and allow a couple
of minutes for the electrode to adjust and
stabilize. The display will show the pH value
compensated for temperature.
For HI 8314, HI 8424, HI 8915, HI 9214, HI 931000 and
HI 9622:
To take a pH measurement simply submerge
the tip (4cm/1½") of the electrode and the
temperature probe into the sample to be
tested.
ins rum ns
CFM
°C
CAL
OFF
ON
pH
HI 931000
ON
OFF
°C
4 cm
(1½")
OFF mV
°C
pH
OFF mV
°C
pH
pH
4 cm
(1½")
°C
ºC

23
22
To measure the mV of a sample submerge
the ORP electrode tip (4 cm/1½") into the
sample to be tested.
Allow a few minutes for the readings to
stabilize.Also, seepage 42for moreinforma-
tion about REDOX measurements.
Note (for HI 8424 and HI 9622 only):the
resolutionis0.1mVforvalueswithin±400mV
range.
TAKING TEMPERATURE MEASUREMENTS (EXCEPT
FOR HI 8014)
Turn the instrument ON and press °C (HI 8314 and HI 8915) or
RANGE (HI 8424andHI 9622).
Makesurethe temperatureprobe(forHI 8314,
HI 8915, HI 8424 and HI 9622) or pH/°C
electrode(forHI 9214 and HI 931000) iscon-
nected to the meter.
Dip the liquid/general purpose temperature
probe or the pH/°C electrode into the sample
and allow the reading to stabilize (a couple of
minutes).
For HI 9214 only: to display the measured temperature, press and
hold the °C button on the top of the meter. When the button is
released, the display will return to the pH reading.
For HI 931000 only: to display the measured
temperature, press and hold the °C key. When
the key is released, the display will return to
the pH reading.
4 cm
(1½")
mV
ins
e
rum ns
ON
OFF
CAL
CFM
HI 9214stickpHmeter
ºC
ON
OFF
°C
RANGE
°C
compensate for it (HI8424 and HI 9622 only). In this case, the
temperature probe must be disconnected.
With HI 8314and HI 8915 when the temperature probe is discon-
nected, the pH reading will be compensated at a fixed 25°C
temperature. If a different compensation is required, reattach the
temperature probe.
SETTING THE TEMPERATURE FOR MANUAL
COMPENSATION (HI 8424 AND HI 9622 ONLY)
If the temperature probe is defective or if
temperature is to be set manually, unplug
the temperature probe and record the tem-
perature of the sample with a ChecktempC or
an accurate thermometer.
• Press RANGE to select the temperature
measurement mode. The "°C" symbol will
blink to indicate that the temperature
probe is not connected.
• Press the UP and DOWN arrow keys to display the sample
temperature (e.g. 25°C).
• Press RANGE to select the pH measurement mode and immerse
the pH electrode into the solution. The displayed pH reading will
be temperature compensated.
ORP MEASUREMENTS (HI 8014, HI 8314, HI 8424,
HI 8915 AND HI 9622 ONLY)
Connect the ORP electrode to the BNC socket on the top of the meter.
To enter the "mV" mode (ORP Oxidation Re-
duction Potential) turn the instrument ON and
select the mV mode (HI 8014, HI 8314 and
HI 8915 only) or press the RANGE key until
the display changes to mV (HI 8424 and
HI 9622 only).
°C
RANGE
ºC
RANGE
pH
RANGE
mV OFF mV
°C
pH

25
24
pp
pp
pH CALIBRATIONH CALIBRATION
H CALIBRATIONH CALIBRATION
H CALIBRATION
For greatest accuracy, frequent calibration of the instrument is
recommended. The instrument should be recalibrated for pH:
a) Whenever the pH electrode or temperature probe is replaced.
b) At least once a month.
c) After testing aggressive chemicals.
d) Where extreme accuracy is required.
e) Whenever the battery has been replaced.
PREPARATION
Pour small quantities of pH 7.01 (HI 7007 or
HI 8007)andpH4.01(HI 7004orHI 8004)
solution into two clean beakers.
For accurate calibration use two beakers for each buffer solution, the
first one for rinsing the tip of the electrode, the second one for
calibration. In this way contamination of the buffers is minimized.
Toobtainaccuratereadings,usepH7.01(HI 7007orHI 8007)and
pH 4.01 (HI 7004 or HI 8004) if you are going to measure acidic
samplesorpH 7.01 (HI 7007or HI 8007)andpH10.01 (HI 7010
orHI 8010) foralkaline measurements.
If you need to calibrate HI 8014, HI 8314 and HI 8915 to NBS
standards, use pH 6.86 (HI 7006 or HI 8006) instead of pH 7.01
and pH 9.18 (HI 7009 or HI 8009) instead of pH10.01.
PROCEDURE FOR HI 8014
•Remove the protective cap from the elec-
trode, rinse and immerse it in pH 7.01
buffer and stir gently. Wait a couple of
minutes for the reading to stabilize.
Note: the electrode should be submerged ap-
proximately4cm(1½")intothesolution.
The ChecktempC should be located close
to the pH electrode.
• Take the temperature of the buffer solution
with a ChecktempC (or an accurate ther-
HI 7004 HI 7007HI 7004 HI 7007
HI 7004
HI 7007
RINSE
HI 7007
CALIBRATION
°C
HI 7007
4 cm
(1½")
HOLD FUNCTION (HI 8915 ONLY)
The hold function is activated by the HOLD key. The measured value
is frozen on the display when this key is pressed. "S" symbol will
appear on the display to indicate the holding mode.
Press the same key again and the meter will return to its regular
operational mode.
AFTER MEASUREMENTS
After measurements switch the instrument off
to save battery.
ForHI 9214:when notin use, disconnect the
electrodefromthemeterandcoverthethreaded
connector with the supplied protective cap.
ON
OFF
ON
OFF
OFF mV
°C
pH
HOLD
S
pH

27
26
• Remove the protective cap from the elec-
trode, rinse the tip of the electrode with
some pH 7.01 solution, then immerse the
pH electrode and temperature probe into
a pH 7.01 buffer solution; stir gently and
wait a couple of minutes for thermal equi-
librium.
Note: the electrode should be submerged ap-
proximately4cm(1½")intothesolution.
The temperature probe should be lo-
cated close to the pH electrode.
• Press °C to display the temperature of the buffer (e.g. 20°C).
• Press the pH key to read pH values. Stir
gently and wait for a couple of minutes.
• Adjust the STD trimmer (for HI 8314) or OFFSET trimmer (for
HI 8915) on the lower left of the front panel until LCD shows the
pH value at the noted temperature (see the pH versus tempera-
ture chart on page 35).
•Rinse and immerse the pH electrode in
pH4.01 or pH 10.01 buffer (2nd calibra-
tion point) and stir gently.
• Wait a couple of minutes and adjust the SLOPE trimmer on the
lower right of the front panel until the LCD shows the pH value
at the noted temperature.
The pH calibration is now complete.
HI 7007
4 cm
(1½")
°C
ºC
pH
HI 7004
OFFSET
pH
SLOPE
pH
mometer), e.g. 20.0°C.
• Set the rotary knob to °C to display the
manual temperature setting.
• Adjust the °C trimmer until the LCD shows the measured tem-
perature.
• Set the rotary knob to pH to display pH
measurement and wait for a couple of
minutes for the reading to stabilize.
• Adjust the AP trimmer with a small screwdriver until the LCD
shows the pH value at the above temperature (see the pH versus
temperature chart on page 35).
•Rinse and immerse the pH electrode in
pH4.01 or pH 10.01buffer(2nd calibra-
tion point) and stir gently.
• Wait a couple of minutes and adjust the mV/pH trimmer until
the LCD shows the pH value at the noted temperature (see
page35 for pH versus temperature chart).
The pH calibration is now complete.
PROCEDURE FOR HI 8314 & HI 8915
• Switch the meter on after connecting the
pH electrode and the temperature probe.
OFF mV
°C
pH
°C
ºC
OFF mV
°C
pH
AP
pH
°C
HI 7004
pH
mV/pH
ON
OFF

29
28
•Rinse the electrode and temperature probe
before immersing them into pH 4.01 /
pH10.01 calibration buffer, stir gently
and wait for thermal equilibrium.
•The symbol "E5" should disappear and a
temperature compensated buffer value will
flash.
•Wait until the pH symbol stops flashing.
•Press CFM to confirm the calibration.
The instrument is now calibrated and will
remain calibrated even when it is turned off.
Note: the meter will lose the calibration if the battery is removed.
Iffor some reasonthe temperature probeis out oforder,or a manual
temperature compensation is required, follow the procedure below:
•Make sure the temperature probe is de-
tached.
• Press RANGE to select the temperature
mode.
• Place the pH electrode into the pH 7.01
buffer and shake it briefly. Wait a couple
of minutes for thermal equilibrium.
• Note the temperature of the buffer with a
ChecktempC (or an accurate thermometer),
e.g. 20°C.
•Use the UP and DOWN arrow keys to adjust the temperature
manually to the above value.
•Follow the calibration procedure on the previous page.
HI 7004
pH
pH
CFM
RANGE
°C
HI 7007
ºC
PROCEDURE FOR HI 8424
• Switch the meter on after connecting the
pH electrode and the temperature probe.
• Remove the protective cap from the elec-
trode, rinse the tip of the electrode with
some pH 7.01 solution, then immerse the
pH electrode and temperature probe into
a pH 7.01 buffer solution; stir gently and
wait a couple of minutes for thermal equi-
librium.
Note: the electrode should be submerged
approximately 4 cm (1½") into the
solution. The temperature probe should
be close to the pH electrode.
•Press RANGE to display pH measurement.
• Press CAL. A temperature compensated buffer value together with
the pH symbol will be displayed, e.g. if the temperature is 25°C,
the display will show "pH 7.01". If the buffer temperature is
20°C, the display will show "pH 7.03" (see page 35).
If "E4" appears, the calibration solution is
wrong or is out of specifications and needs
to be replaced.
• Wait until the "pH" symbol stops flashing
which means that the reading is stable.
•Press CFM. The symbol "E5" will appear to indicate that offset
calibration is complete but the electrode is still in pH 7.01 buffer,
and the meter expects a pH 4.01 or 10.01 buffer.
ON
OFF
HI 7007
4 cm
(1½")
RANGE
CAL
pH
pH
CFM

31
30
• RinsethepHelectrodewithsomepH 4.01
or 10.01 buffer solution (2nd calibration
point).
• Dip the electrode into the pH 4.01 (or
pH10.01) buffersolution.
• Stir gently and wait until the stability
indicator "∆" stops flashing.
• Press CFM to confirm the acceptance of
the second buffer solution.
pH calibration is now complete and the meter
returns to the measurement mode.
PROCEDURE FOR HI 931000
• Turn the meter on.
Note:the stability indicator"∆" blinks when
the electrode is not immersed in the
solution.
• Press CAL and the display will flash "7.01 ∆".
• Remove the protective cap from the elec-
trode, rinse the tip of the electrode with
some pH 7.01 solution, then immerse it
into a pH 7.01 buffer solution; stir gen-
tly and wait a couple of minutes for
thermal equilibrium.
Note: the electrode should be submerged
approximately 4 cm (1½") into the
solution.
• When electrode has stabilized, the sta-
bility indicator "∆" stops flashing.
• Press CFM to confirm the first buffer solution.
ins
e
rum ns
ON
OFF
CAL
CFM
HI9214stickpHmeter
HI 7004
ON
OFF
CAL
∆
∆
CFM
∆
HI 7007
4 cm
(1½")
CFM
PROCEDURE FOR HI 9214:
• Turn the meter on.
Note: the stability indicator "∆" blinks when
the electrode is not immersed in the
solution.
• Remove the protective cap from the pH/°C
electrode, rinse the tip of the electrode
withsome pH 7.01solution, then immerse
it into a pH 7.01 buffer solution; stir
gently and wait a couple of minutes for
the reading to stabilize.
Note: the electrode should be submerged
approximately 4 cm (1½") into the
solution.
• Press CAL. The display will flash "7.01 ∆".
• Wait until the stability indicator "∆" stops
flashing.
• Press CFM to confirm the first buffer solu-
tion.
• If the ON/OFF key is pressed at this point, the calibration process
will end with only the offset (one-point) calibration. For best
accuracy, however, it is recommended that two-point calibration
isperformed.
• The LCD will now flash "4.01 ∆". If the
CAL key is pressed, the slope calibration
will change to "10.01 ∆".
ON
OFF
ins
e
rum ns
ON
OFF
CAL
CFM
HI 9214stickpHmeter
HI 7007
4 cm
(1½")
ins
e
rum ns
ON
OFF
CAL
CFM
HI9214stickpHmeter
CAL
∆
∆
CFM
∆

33
32
•Press RANGE to display pH measurement.
• Press CAL to start calibration and to display again the last
calibration date.
Note: if changing the calibration date is not desired, simply press the
CFM key twice to bypass the month and day entry.
• Using the UP and DOWN keys, enter the month while the
"month" symbol and the two left digits blink.
• PressCFM.
• The "day" symbol and the two right digits will start blinking.
Using the UP and DOWN keys, enter the day.
• Press CFM to enter the new calibration date. The meter will
request pH 7.01 buffer value and the display will show:
If"Er-7"appears, thecalibrationsolutionis
wrong or is out of specifications and needs
to be replaced.
• When "CAL" disappears and the meter
displays "CFM", press CFM to confirm the
offsetcalibration.
RANGE
CAL
CAL month day
CAL month day
CFM
CAL month day
pH
CAL
CFM
pH
CAL
CFM
• If the ON/OFF key is pressed at this point, the calibration process
will end with only the offset (one-point) calibration. For best
accuracy, however, it is recommended that a two-point calibra-
tion is performed.
• TheLCDwillnowblink"4.01∆".pH 10.01
can be selected by pressing the CAL key.
• Rinse with pH 4.01 (or pH 10.01) buffer
solution (2nd calibration point).
• Dip the electrode into a pH 4.01 (or
pH10.01) buffersolution.
• Stir gently and wait until the stability
indicator "∆" stops flashing.
• Press CFM to confirm the second buffer
solution.
The meter is now calibrated and will return to
operational mode.
PROCEDURE FOR HI 9622
• Switch the meter on after connecting the pH electrode and the
temperature probe and the meter will display the previous
calibration date (month & day) for 3 seconds.
• Remove the protective cap from the elec-
trode, rinse the tip of the electrode with
some pH 7.01 solution, then immerse the
pH electrode and temperature probe into
the pH 7.01 buffer solution; stir gently
and wait a couple of minutes for thermal
equilibrium.
Note: the electrode should be submerged ap-
proximately4cm(1½")intothesolution.
The temperature probe should be close
to the pH electrode.
HI 7004
∆
CFM
CAL month day
HI 7007
ON
OFF
4 cm
(1½")
∆

35
34
•Use the UP and DOWN keys to set the temperature manually to
the above value.
•Followthe rest ofthe calibration procedureas described previously
(see page 32).
ºC
For manual temperature compensation during calibration (HI 8014,
HI 8424 and HI 9622), please refer to the following chart.
pp
pp
pH VALUES AT VARIOUSH VALUES AT VARIOUS
H VALUES AT VARIOUSH VALUES AT VARIOUS
H VALUES AT VARIOUS
TEMPERATURESTEMPERATURES
TEMPERATURESTEMPERATURES
TEMPERATURES
TEMP pH VALUES
°C °F 4.01 6.86 7.01 9.18 10.01
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
32
41
50
59
68
77
86
95
104
113
122
131
140
149
158
4.01
4.00
4.00
4.00
4.00
4.01
4.02
4.03
4.04
4.05
4.06
4.07
4.09
4.11
4.12
6.98
6.95
6.92
6.90
6.88
6.86
6.85
6.84
6.84
6.83
6.83
6.84
6.84
6.85
6.85
7.13
7.10
7.07
7.04
7.03
7.01
7.00
6.99
6.98
6.98
6.98
6.98
6.98
6.99
6.99
9.46
9.39
9.33
9.27
9.22
9.18
9.14
9.10
9.07
9.04
9.01
8.99
8.97
8.95
8.93
10.32
10.24
10.18
10.12
10.06
10.01
9.96
9.92
9.88
9.85
9.82
9.79
9.77
9.76
9.75
For instance, if the buffer temperature is 25°C, the display should
show pH 4.01 or 7.01 or 10.01.
If the buffer temperature is 20°C, the display should show pH 4.00
or 7.03 or 10.06.
If the buffer temperature is 50°C, the display should show pH 4.06
or 6.98 or 9.82.
pH
CAL
• The meter will request pH 4.01 or 10.01
buffer showing "Er-4". This indicates that
the instrument is ready for the second
point calibration
Note: only when the CFM is pressed for the offset calibration will the
meter permanently memorize the new calibration date (until
next calibration).
•Rinse the electrode and temperature probe before immersing
them into a pH 4.01 / pH10.01 calibration buffer, stir gently
and wait a couple of minutes for thermal equilibrium. The display
will now show the value of the temperature compensated buffer
solution.
• When "CAL" disappears and the meter displays "CFM" press CFM
to confirm the slope calibration.
The instrument is now calibrated and will remain calibrated even
when it is turned off.
Note: the meter will lose calibration if the battery is removed.
Iffor some reason the temperatureprobeis out of order, or amanual
temperature compensation is required, follow the procedure below:
•Make sure the temperature probe is detached.
• Press RANGE to select the temperature
mode.
• Place the tip of the pH electrode into the
pH 7.01 buffer and stir gently. Wait a
couple of minutes for thermal equilibrium.
• Note the temperature of the buffer with a
ChecktempC (or an accurate thermometer),
e.g. 20°C.
HI 7004
pH
CAL
pHCFM
CFM
RANGE
°C

37
36
SYMPTOMS PROBLEM SOLUTION
Themeterfailstocali-
brate or gives faulty
readings
The meter is slow in
responding or gives
faulty readouts
The meter does not
accept the 2nd buffer
solution
The reading drifts
The meter does not
work with the tem-
perature probe
For HI 8424 only
Displayshows"E1"
Displayshows"E2"
Displayshows"E3"
Displayshows"E4"
Check the buffer solution and
replace it if necessary
Replace the pH electrode
Leave the electrode in a stor-
agesolutionaftercleaning the
junction. If problem persists,
replace the electrode
Check the buffer solution and
replace it if necessary
Followthecleaningprocedure.
If this doesn't work replace
theelectrode
Followthe cleaning procedure
and replace the pH electrode
ifnecessary
Replace the probe.
a) Check the calibration
b) Ensure that the pH value
is between 0 and 14
c)Checkthelevelofelectrolyte
and the state of the electrode
itself
Make sure the temperature
value is within 0 and 100°C
Make sure the mV value is
within ±1999
Make sure the buffer solution
used is pH 7 and replace it if
necessary
Replace the pH electrode
TROUBLESHOOTING GUIDETROUBLESHOOTING GUIDE
TROUBLESHOOTING GUIDETROUBLESHOOTING GUIDE
TROUBLESHOOTING GUIDE
Erroneous buffer so-
lution used for
calibration.
An out of order pH
electrode
The electrode is not
working or the refer-
ence junction is
clogged
Erroneous buffer so-
lution used for slope
calibration
An out of order pH
electrode
A clogged or an out
oforderpH electrode
Anoutoforderprobe
Out of range- pH
scale
Out of range- °C
scale
Out of range- mV
scale
Erroneous buffer so-
lution used for offset
calibration
An out of order pH
electrode
TEMPERATURE CALIBRATIONTEMPERATURE CALIBRATION
TEMPERATURE CALIBRATIONTEMPERATURE CALIBRATION
TEMPERATURE CALIBRATION
HI 8314, HI 8915, HI 8424, HI 9214, HI 931000 and HI 9622
have been accurately precalibrated for temperature at the factory.
For optimum accuracy, it is recommended that you have your pH
meter recalibrated for temperature at least once a year.
Contact your Dealer or the nearest Hanna Customer Service Center for
moreinformation.
mm
mm
mV OUTPUTV OUTPUT
V OUTPUTV OUTPUT
V OUTPUT
It is possible to attach the HI 8915 to a recorder or plotter using the
mV output sockets.
pH, mV and °C readings can be transmitted through the output
sockets at a voltage that proportionally matches the displayed value.
For example, when the meter reads 2.00, 7.00 or 12.00 pH, it emits
a 200, 700 or 1200 mV signal, respectively.
This makes it unnecessary to use conversion tables and charts.
The output signals for the three measurement ranges of the meter are
100 mV for every pH unit, 1mV for every mV unit and 10 mV for
every degree centigrade.

39
38
* Only available with refillable electrodes.
ELECTRODE CONDITIONINGELECTRODE CONDITIONING
ELECTRODE CONDITIONINGELECTRODE CONDITIONING
ELECTRODE CONDITIONING
AND MAINTENANCEAND MAINTENANCE
AND MAINTENANCEAND MAINTENANCE
AND MAINTENANCE
PREPARATION
Remove the protective cap.
DO NOT BE ALARMED IF ANY SALT DEPOSITS ARE PRESENT.
This is normal with electrodes and they will disappear when rinsed
with water.
During transport tiny bubbles of air may have formed inside the glass
bulb. The electrode cannot function properly under these conditions.
These bubbles can be removed by "shaking down" the electrode as
you would do with a glass thermometer.
SYMPTOMS PROBLEM SOLUTION
For HI 8424 only
Displayshows"E5"
For HI 9622 only
Displayshows"pH----"
Display shows "°C"
blinking
Displayshows"mV----"
Displayshows"Er-7"
Displayshows"Er-4"
Displayshows"Er-10"
Ec
Eb
Er
Erroneous buffer so-
lution used for slope
calibration
An out of order pH
electrode
Out of range- pH
scale
No temperature
probe attached
Out of range- mV
scale
ErroneouspH7buffer
solutionused foroff-
set calibration
An out of order pH
electrode
ErroneouspH4buffer
solution used for
slopecalibration
An out of order pH
electrode
Erroneous pH 10
buffer solution used
for slope calibration
An out of order pH
electrode
Wrong buffer
Unfitelectrode
Low battery
Over-Range
Dryelectrode
Use fresh buffer solution
Replace the electrode
a) Check the calibration
b) Ensure that the pH value
is between 0 and 14
c)Checkthelevelofelectrolyte
and the state of the electrode
itself
Make sure the temperature
probe is attached properly
Make sure the mV value is
within ±1999
Usefresh pH7 buffersolution
Replace the electrode
Usefresh pH4 buffersolution
Replace the electrode
Use fresh pH 10 buffer solu-
tion
Replace the electrode
Change the buffer solution.
Clean, condition and if neces-
sary change the electrode.
Replace the battery.
Repeat conditioning.
ForHI9214&HI931000only