Instruction Manual
HI 8014 • HI 8915
HI 931000
Portable pH Meters
www.hannainst.com
1
Dear Customer,
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.
If you need additional technical information, do not hesitate to e-mail
us at tech@hannainst.com.
These instruments are in compliance with the directives.
WARRANTY
All Hanna Instruments meters are 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. Damages due to
accident, misuse, tampering or lack of prescribed maintenance are not covered. If
service is required, contact the dealer from whom you purchased the instrument. If
under warranty, report the model number, date of purchase, serial number and the
nature of the failure. 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 number from the Customer Service department
and then send it with shipping costs prepaid. When shipping any instrument, make
sure it is properly packaged for complete protection.
TABLE OF CONTENTS
PRELIMINARY EXAMINATION ........................................................ 3
GENERAL DESCRIPTION ................................................................3
FUNCTIONAL DESCRIPTION HI8014..............................................4
SPECIFICATIONS HI8014 .............................................................5
FUNCTIONAL DESCRIPTION HI8915.............................................. 6
SPECIFICATIONS HI8915 .............................................................7
FUNCTIONAL DESCRIPTION HI931000 ..........................................8
SPECIFICATIONS HI931000.......................................................... 9
OPERATIONAL GUIDE ................................................................. 10
pH CALIBRATION ....................................................................... 14
pH VALUES AT VARIOUS TEMPERATURES ................................... 18
TAKING REDOX MEASUREMENTS................................................. 18
TEMPERATURE CALIBRATION ...................................................... 19
mV OUTPUT .............................................................................. 19
DISPLAY CODES GUIDE............................................................... 19
ELECTRODE CONDITIONING AND MAINTENANCE ........................... 20
BATTERY REPLACEMENT .............................................................. 23
ACCESSORIES ............................................................................. 24
CE DECLARATION OF CONFORMITY.............................................. 27
PRELIMINARY EXAMINATION
Remove the instrument from the packing material and examine it
carefully to make sure that no damage has occurred during shipment. If noticeable damage is found, notify your Dealer or the nearest
Hanna Customer Service Center.
Note: Save all packing material until you are sure that the
instrument functions correctly. Any defective item must be
returned in the original packing together with the supplied
accessories.
GENERAL DESCRIPTION
HI 8014, HI 8915 and HI 931000 are hand-held pH/mV meters
with interchangeable plastic-body electrodes, simple controls on the
front panel, low battery detector, large easy-to-read display, simple
calibration procedure and lightweight ABS plastic housing.
• HI 8014 is an affordable portable pH/mV meter. The pH or mV
ranges are easily selected with a rotary knob, as well as the °C
range for manual temperature compensation. HI 8014 comes
supplied with: HI 1230B combination, double-junction, gel pH
electrode, one 9V battery and calibration screwdriver.
• HI 8915 is a portable pH/mV/°C meter that combines accurate
pH measurements with a recorder output capability and automatic 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 performed 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, one 9V bat-
tery and calibration screwdriver.
• HI 931000 is a compact, microprocessor-based pH/°C meter,
which comes supplied with: HI 1217D combination gel pH/°C
electrode with built-in temperature sensor and signal amplifier,
one 9V battery and HI 710004 soft carrying case.
23
FUNCTIONAL DESCRIPTION HI8014
SPECIFICATIONS HI8014
1
2
pH
pH meter
°C
OFF
HI 8014
pH
mV
3
°C mV/pH
4
ins rum n
AP
s
1) BNC socket for combination pH electrodes.
2) Liquid Crystal Display (LCD).
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
°C trimmer).
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.
HI 8014
Range pH 0.00 to 14.00
mV ±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 (32 to 212°F)
pH Electrode HI 1230B combination, double-junction,
gel-filled, with BNC connector
and 1 m (3.3') cable (included)
Input Impedance 1012 ohm
Battery Type 1 x 9V
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 53 mm
(7.3 x 3.2 x 2.1’’)
Weight 265 g (9.3 oz.)
45
FUNCTIONAL DESCRIPTION HI8915
1
2
3
4
5
6
pH
HI 8915
ATC
pHmeter
HOLD
mV
OFFSET
+-
6.86
7.00
mV OUTPUT
CALIBRATION
ON
OFF
pH
°C
SLOPE
4.01
10.01
1) BNC socket for combination pH or ORP electrodes.
2) Liquid Crystal Dysplay (LCD).
3) HOLD key, to freeze the reading on the display.
4) mV key, 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 HI7669AW temperature probe.
8) ON/OFF key, to switch the instrument on or off.
9) pH key, to display the pH value.
10) °C key, 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).
7
8
9
10
11
12
SPECIFICATIONS HI8915
HI 8915
Range pH 0.00 to 14.00
mV ±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
pH Electrode HI 1230B combination, double-junction,
gel-filled with BNC connector
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 9V
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 53 mm
(7.3 x 3.2 x 2.1’’)
Weight 265 g (9.3 oz.)
67
FUNCTIONAL DESCRIPTION HI931000
SPECIFICATIONS HI931000
1
s
ins rum n
2
ON
OFF
°C
3
4
5
CAL
CFM
HI 931000
6
1) DIN socket for combination pH/°C electrode.
2) Liquid Crystal Display (LCD).
3) ON/OFF key, to switch the instrument on or off.
4) °C key, to display the measured temperature (press & hold).
5) CAL key, to enter calibration mode.
6) CFM key, 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 (32 to 158°F)
pH Electrode HI 1217D combination, gel
with built-in temperature sensor
and amplifier (included)
Battery Type 1 x 9V
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.)
89
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, install the
battery while paying attention to its polarity.
Always remove the electrode protective cap before taking any measurements. If the electrode has been left dry, soak the tip (bottom
4 cm / 1½") in pH7 or pH4 buffer solution for a few hours or
overnight to reactivate it.
For HI 8014:
Connect the pH electrode to the BNC socket on the top of the meter.
Switch the meter on by turning the rotary knob to the °C, pH or mV
position.
TOP VIEW
BNC
electrode
connector
For HI 8915:
Connect the pH electrode to the BNC socket on
the top of the instrument. Connect the temperature probe to the other socket. The
temperature probe can be used independently
to take temperature measurements, or it can
be used in conjunction with the pH electrode to
utilize the meter's ATC capability.
Turn the meter on by pressing ON/OFF.
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.
ins
rum ns
pH
ON
OFF
°C
CAL
CFM
HI 931000
ON
OFF
OFF
°C
TOP VIEW OF HI 8915
pH
mV
ON
OFF
pH MEASUREMENTS
For HI 8014:
To take a pH measurement simply submerge
the tip (4cm/1½") of the electrode and a
ChecktempC (or another accurate thermometer) in the sample to be tested.
Turn the rotary knob to the °C position to
display temperature setting on the LCD.
Using the provided screwdriver, turn the temperature trimmer to display the temperature
measured by ChecktempC, e.g. 25°C..
ºC
°C
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 the manually adjusted temperature.
For HI 8915:
To take a pH measurement simply submerge
the tip (4cm/1½") of the electrode and the
temperature probe in the sample to be tested.
For HI 931000:
Simply submerge the tip (4cm/1½") of the
combination pH/temperature electrode in the
sample.
Turn the instrument ON, shake the electrode
briefly and wait until the stability indicator
"∆" stops blinking. The display will show the
pH value compensated for temperature.
OFF
OFF
°C
(1½")
4 cm
°C
pH
mV
°C
pH
mV
pH
(1½")
4 cm
(1½")
4 cm
∆
10 11
Notes:
• In order to take accurate pH measurements, make sure that the
instrument is calibrated for pH before use.
• 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 clean the electrode thoroughly to eliminate crosscontamination. After cleaning, 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 931000 uses an electrode with a built-in temperature sensor and
therefore no additional temperature probe is needed.
To use the Automatic Temperature Compensation feature of HI 8915,
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. When the
temperature probe is disconnected, the pH reading will be compensated at 25°C.
HI 8014 provides only for manual compensation.
Dip the temperature probe or the pH/°C electrode into the sample
and allow the reading to stabilize (a couple of minutes).
For HI 931000, to display the measured tem-
perature, press and hold the °C key. When the
key is released, the display will return to the pH
reading.
°C
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 (storage) mode.
Press the HOLD key again to return to the normal mode.
AFTER MEASUREMENTS
After measurements switch the instrument off to save the battery,
disconnect the electrode from the meter and store it with a few drops
of HI 70300 storage solution in the protective cap.
ORP MEASUREMENTS (HI 8014 & HI 8915)
Connect an ORP electrode to the BNC socket on the top of the meter.
To enter the "mV" mode (ORP Oxidation Reduction Potential) turn the
instrument ON and select the mV mode.
To measure the mV of a sample submerge submerge the ORP
electrode tip (4 cm/1½") in the sample to be tested.
Allow a few minutes for the readings to stabilize. Also, see further on
for more information about REDOX measurements.
TEMPERATURE MEASUREMENTS (not for HI 8014)
Turn the instrument ON and press °C.
Make sure the temperature probe (for HI 8915) or the pH/°C
electrode (for HI 931000) is connected to the meter.
12 13
pH CALIBRATION
°C
For best 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) Whenever the battery has been replaced.
e) When high accuracy is required.
PREPARATION
Pour small quantities of pH 7.01 (HI 7007) and pH 4.01 (HI 7004)
solutions 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. This way, contamination of the buffers is minimized.
RINSE
HI 7007
For accurate readings, use pH 7.01 (HI 7007) and pH 4.01
(HI 7004) if you are going to measure acidic samples, or pH 7.01
(HI 7007) and pH 10.01 (HI 7010) for alkaline measurements.
If you need to calibrate HI 8014 and HI 8915 to NBS standards,
use pH 6.86 (HI 7006) instead of pH 7.01 and pH 9.18 (HI 7009)
instead of pH 10.01.
CALIBRATION
HI 7007
• Set the rotary knob to °C position to display the manual
temperature setting and adjust the °C trimmer until the LCD
shows the measured temperature.
°C
pH
OFF
mV
ºC
• Set the rotary knob to pH position to display pH measurement
and wait for the reading to stabilize and adjust the AP trimmer
with a small screwdriver until the LCD shows the pH value at the
above temperature (see page 18 for pH vs. temperature chart).
pH
OFF
°C
mV
pH
AP
°C
• Rinse and immerse pH electrode and
thermometer in pH 4.01 or pH 10.01
buffer (2nd calibration point); stir gently.
HI 7004
• Wait a couple of minutes, then adjust the mV/pH trimmer until
the LCD shows the pH value at the noted temperature (see page
18 for pH vs. temperature chart).
PROCEDURE FOR HI 8014
• Remove the protective cap from the electrode, rinse and immerse it in pH 7.01
buffer and stir gently. Wait a couple of
minutes for the reading to stabilize.
• Take the temperature of the buffer solution with a ChecktempC (or another
accurate thermometer), e.g. 20°C.
Note: The electrode should be submerged approximately 4 cm (1½")
into the solution. The ChecktempC should be located as close
as possible to the pH electrode.
14 15
°C
HI 7007
pH
mV/pH
The pH calibration is now complete.
PROCEDURE FOR HI 8915
• First connect the pH electrode and the temperature probe to the
instrument, then switch it ON.
• Remove the electrode protective cap, rinse
the electrode tip with some pH 7.01
solution, then immerse the pH electrode
and temperature probe in a pH 7.01
buffer solution.
HI 7007
• Stir gently and wait a couple of minutes for thermal equilibrium.
Note: The electrode should be submerged approximately 4 cm (1½")
into the solution. The temperature probe should be located as
close as possible to the pH electrode.
• Press °C to display the temperature of the buffer (e.g. 20.0°C).
°C
ºC
pH
• Press the pH key to read pH values. Stir
gently and wait for a couple of minutes.
• Adjust the OFFSET trimmer on the front panel until LCD shows the
pH value at the noted temperature (see the pH vs. temperature
chart on page 18).
pH
PROCEDURE FOR HI 931000
• Turn the meter on.
Note: The "∆" indicator blinks when the reading is not stable.
• Press CAL and the display will flash "7.01 ∆".
CAL
∆
• Remove the electrode protective cap, rinse the electrode tip with
some pH 7.01 solution, then immerse the pH electrode and
temperature probe in a pH 7.01 buffer solution.
• Stir gently and wait a couple of minutes for thermal equilibrium.
Note: The electrode should be submerged
approximately 4 cm (1½") in the
solution.
• When electrode has stabilized, the "∆" indicator stops flashing.
Press CFM to confirm the first buffer solution.
(1½")
4 cm
OFFSET
• Rinse and immerse pH electrode and temperature probe in pH 4.01 or pH 10.01
buffer (2nd calibration point); stir gently.
HI 7004
• Wait a couple of minutes and adjust the SLOPE trimmer on the
front panel until the LCD shows the pH value at the noted
temperature.
pH
SLOPE
The pH calibration is now complete.
16 17
CFM
∆
• To quit the calibration mode and save a one-point (offset)
procedure, press the ON/OFF key. For best accuracy, however, it
is recommended to perform a two-point calibration.
• The LCD will now blink "4.01 ∆".
pH 10.01 can be selected by pressing
the CAL key.
∆
• Rinse the electrode with the second
buffer solution (pH 4.01 or pH 10.01).
• Dip the electrode into the buffer solution, stir gently and wait
until the instability indicator "∆" stops flashing. Press CFM to
confirm the second buffer solution.
CFM
∆
The meter is now calibrated and will return to operational mode.
pH VALUES AT VARIOUS
TEMPERATURES
For manual temperature compensation during calibration, please
refer to the following chart.
TEMP pH VALUES
°C °F 4.01 6.86 7.01 9.18 10.01
0
32
4.01
6.98
7.13
9.46
10.32
5
41
4.00
6.95
7.10
9.39
10.24
10
50
4.00
6.92
7.07
9.33
10.18
15
59
4.00
6.90
7.04
9.27
10.12
20
68
4.00
6.88
7.03
9.22
10.06
25
77
4.01
6.86
7.01
9.18
10.01
30
86
4.02
6.85
7.00
9.14
9.96
35
95
4.03
6.84
6.99
9.10
9.92
40
104
4.04
6.84
6.98
9.07
9.88
45
113
4.05
6.83
6.98
9.04
9.85
50
122
4.06
6.83
6.98
9.01
9.82
55
131
4.07
6.84
6.98
8.99
9.79
60
140
4.09
6.84
6.98
8.97
9.77
65
149
4.11
6.85
6.99
8.95
9.76
70
158
4.12
6.85
6.99
8.93
9.75
TEMPERATURE CALIBRATION
HI 8915 and HI 931000 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
more information.
mV 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.
For instance, if the buffer temperature is 25°C, the display should
show pH 4.01 or 7.01 or 10.01. With the temperature at 20°C, the
display should show pH 4.00 or 7.03 or 10.06. Likewise, at 50°C,
the display should show pH 4.06 or 6.98 or 9.82.
TAKING REDOX MEASUREMENTS
HI 8014 and HI 8915 have the capability to take ORP measure-
ments, if using an optional ORP electrode.
Oxidation-reduction potential (REDOX) measurements provide the
quantification of the oxidizing or reducing power of the sample tested.
To correctly perform a redox measurement, the surface of the ORP
electrode must be clean and smooth.
When not in use, the tip of the electrode should be kept moist and
safe from any mechanical stress which might cause damage to the
glass-platinum junction.
18 19
DISPLAY CODES GUIDE
HI 8014 and HI 8915
°C Symbol indicates the meter is in temperature mode.
pH Symbol indicates the meter is in pH mode.
mV Symbol indicates the meter is in mV mode.
HI 8915
S Symbol to indicate the display is frozen (Hold function).
HI 931000
∆∆
∆ Stability indicator
∆∆
Ec Wrong buffer: Change the buffer solution;
Unfit electrode: Clean and condition the electrode.
Eb Low battery: Replace the battery.
Er Over-Range: Dry electrode, repeat conditioning.
ELECTRODE CONDITIONING AND
MAINTENANCE
* Only available with refillable electrodes.
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.
If the bulb and/or junction are dry, soak the electrode in HI 70300
Storage Solution for at least one hour.
For refillable electrodes:
If the refill solution (electrolyte) is more than 2½ cm (1") below the fill
hole, add HI 7082 (3.5M KCl Electrolyte Solution) for double junction
or HI 7071 (3.5M KCl+AgCl Electrolyte Solution) for single junction
electrodes.
TEST MEASUREMENT
Rinse the electrode tip with distilled water. Immerse the tip (bottom
4 cm / 1½") in the sample and stir gently for approx. 30 seconds.
For a faster response and to avoid cross contamination of the samples,
rinse the electrode tip with the solution to be tested, before taking
any measurements.
STORAGE
To minimize clogging and assure a quick response time, the glass
bulb and the junction should be kept moist at any time and not
allowed to dry out.
When not in use, replace the solution in the protective cap with a few
drops of HI 70300 Storage Solution.
Follow the Preparation Procedure above before taking measurements.
NEVER STORE THE ELECTRODE IN DISTILLED OR DEIONIZED WATER.
PERIODIC MAINTENANCE
Inspect the electrode and the cable. The cable used for the connection
to the meter 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.
For refillable electrodes:
Refill the electrode with fresh electrolyte (HI 7071 for single junction
or HI 7082 for double junction electrodes). Allow the electrode to
stand upright for 1 hour. Follow the Storage Procedure above.
CLEANING PROCEDURE
General Soak in Hanna HI 7061 General Cleaning Solu-
tion for approximately 30 minutes.
Removal of films, dirt or deposits on the membrane/junction:
Protein Soak in Hanna HI7073 Protein Cleaning Solu-
tion for 15 minutes.
20 21
Inorganic Soak in Hanna HI 7074 Inorganic Cleaning Solu-
tion for 15 minutes.
Oil/ grease Rinse with Hanna HI7077 Oil and Fat Cleaning
Solution.
IMPORTANT: After performing any of the above cleaning procedures
rinse the electrode thoroughly with distilled water, drain and refill the
reference chamber with fresh electrolyte (not necessary for gel-filled
electrodes), and soak the electrode in HI70300 Storage Solution for
at least 1 hour before taking any measurement.
TROUBLESHOOTING
Evaluate the electrode performance based on the following.
• Noise (Readings fluctuate up and down) could be due to:
- Clogged/Dirty Junction: Refer to above Cleaning Procedure.
- Loss of shielding due to low electrolyte level (in refillable
electrodes only): refill with HI7071 for single junction or
HI7082 for double junction electrodes.
• Dry Membrane/Junction: Soak in Storage Solution HI70300 for
at least 1 hour.
• Drifting: Soak the electrode tip in warm Hanna Solution HI7082
for one hour and rinse tip with distilled water (refill with fresh
HI7071 for single junction electrodes and HI7082 for double
junction electrodes if necessary).
• Low Slope: Refer to the cleaning procedure above.
• No Slope: - Check the electrode for cracks in glass stem or bulb
(replace the electrode if cracks are found).
- Make sure cable and connections are not damaged nor lying in a pool of water or solution.
• Slow Response/Excessive Drift: Soak the tip in Hanna Solu-
tion HI7061 for 30 minutes, rinse thoroughly in distilled water
and then follow the Cleaning Procedure above.
• For ORP Electrodes: polish the metal tip with a lightly abrasive
paper (paying attention not to scratch the surface) and wash
thoroughly with water.
Note: For field applications, it is always recommended to keep a
spare electrode handy. When anomalies are not resolved with
a simple maintenance, change the electrode (and recalibrate
the meter) to see if the problem is alleviated.
BATTERY REPLACEMENT
All meters are powered by a 9V battery that is located on the rear of
the instrument.
The meters provide the following, when the battery becomes weak:
- HI 8014, reaching a certain minimum threshold, automatically
switches the LCD off.
- HI 8915 flashes an additional decimal point
on the bottom left hand side of the LCD.
- HI 931000 displays the "Eb" message.
When the low battery indicator appears only a few hours of battery
life is remaining. Since a low voltage may also result in loss of
calibration data or unreliable measurements, it is recommended to
replace the battery immediately.
Replacement must only take place in a non-hazardous area using an
alkaline 9V battery.
To access the battery, remove the battery cover by applying pressure
in the direction indicated below. Replace the old battery with a new
one, while paying attention to its polarity.
HI 931000HI 8014 - HI 8915
HI 8014
HI 8314
HI 8424
HI 8915
BATTERY
Note: The instrument should be recalibrated after changing the
battery.
9 VOLT BATTERY
SLIDE
22 23
ACCESSORIES
pH CALIBRATION SOLUTIONS
HI 70004P pH 4.01 buffer solution, 20 mL sachet, 25 pcs
HI 7004M pH 4.01 buffer solution, 230 mL bottle
HI 7004L pH 4.01 buffer solution, 500 mL bottle
HI 7006M pH 6.86 buffer solution, 230 mL bottle
HI 7006L pH 6.86 buffer solution, 500 mL bottle
HI 70007P pH 7.01 buffer solution, 20 mL sachet, 25 pcs
HI 7007M pH 7.01 buffer solution, 230 mL bottle
HI 7007L pH 7.01 buffer solution, 500 mL bottle
HI 7009M pH 9.18 buffer solution, 230 mL bottle
HI 7009L pH 9.18 buffer solution, 500 mL bottle
HI 70010P pH 10.01 buffer solution, 20 mL sachet, 25 pcs
HI 7010M pH 10.01 buffer solution, 230 mL bottle
HI 7010L pH 10.01 buffer solution, 500 mL bottle
ELECTRODE STORAGE SOLUTIONS
HI 70300M Storage solution, 230 mL bottle
HI 70300L Storage solution, 500 mL bottle
ELECTRODE CLEANING SOLUTIONS
HI 70000P Electrode rinsing solution, 20 mL sachet, 25 pcs
HI 7061M General cleaning solution, 230 mL bottle
HI 7061L General cleaning solution, 500 mL bottle
HI 7073M Protein cleaning solution, 230 mL bottle
HI 7073L Protein cleaning solution, 500 mL bottle
HI 7074M Inorganic cleaning solution, 230 mL bottle
HI 7074L Inorganic cleaning solution, 500 mL bottle
HI 7077M Oil & Fat cleaning solution, 230 mL bottle
HI 7077L Oil & Fat cleaning solution, 500 mL bottle
REFILLING ELECTROLYTE SOLUTIONS
HI 7071 3.5M KCl + AgCl electrolyte, 4 x 50 mL, for single
junction electrodes
HI 7072 1M KNO3 electrolyte, 4 x 50 mL
HI 7082 3.5M KCl electrolyte, 4 x 50 mL, for double junction
electrodes
ORP SOLUTIONS
HI 7020M Test solution, 200-275 mV, 230 mL bottle
HI 7020L Test solution, 200-275 mV, 500 mL bottle
HI 7091M Reducing pretreatment solution, 230 mL bottle
HI 7091L Reducing pretreatment solution, 500 mL bottle
HI 7092M Oxidizing pretreatment solution, 230 mL bottle
HI 7092L Oxidizing pretreatment solution, 500 mL bottle
pH ELECTRODES
B = BNC CONNECTION PLUG + 1 m (3.3’) CABLE
S = SCREW-TYPE CONNECTOR
HI1043B / HI1040S Glass body, double junction, refillable,
combination pH electrode. Use: strong acid/alkali.
HI1053B / HI1050S Glass body, triple ceramic, conic shape,
refillable, combination pH electrode. Use: emulsions.
HI1083B Glass body, micro, Viscolene, non-refillable, combi-
nation pH electrode. Use: biotechnology, micro titration.
HI1131B / HI1111S Glass body, single junction, refillable,
combination pH electrode. Use: general purpose.
HI1330B / HI1310S Glass body, semimicro, single junction,
refillable, combination pH electrode. Use: laboratory.
HI1331B / HI1311S Glass body, semimicro, single junction,
refillable, combination pH electrode. Use: flasks.
HI1230B / HI1210S Plastic body, double junction, gel-filled,
combination pH electrode. Use: general purpose.
HI2031B / HI2020S Glass body, semimicro, conic, refillable,
combination pH electrode. Use: semisolid products.
HI1332B / HI1312S Plastic body, double junction, refillable,
combination pH electrode. Use: general purpose.
FC100B PVDF body, double junction, refillable, combina-
tion pH electrode. Use: food industry, general.
FC200B / FC200S PVDF body, single junction, conic,
Viscolene, non-refillable, combination pH electrode. Use:
meat & cheese.
24 25
FC210B Glass body, double junction, conic, Viscolene, non-
refillable combination pH electrode. Use: milk, yogurt.
FC220B Glass body, triple ceramic, single junction, refill-
able, combination pH electrode. Use: food processing.
FC911B PVDF body, double junction, refillable with built-
in amplifier, combination pH electrode. Use: very high
humidity.
HI1413B Glass body, single junction, flat tip, Viscolene,
non-refillable combination pH electrode. Use: surface.
ORP ELECTRODES
HI3131B / HI3111S Glass body, refillable, combination plati-
num ORP electrode. Use: titration.
HI3230B / HI3210S Plastic body, gel-filled, combination plati-
num ORP electrode. Use: general purpose.
HI4430B / HI4410S Plastic body, gel-filled, combination gold
ORP electrode. Use: general purpose.
EXTENSION CABLES (SCREW TO BNC CONNECTOR)
HI 7855/1 Extension cable 1 m (3.3') long
HI 7855/3 Extension cable 3 m (9.9') long
OTHER ACCESSORIES
ChecktempC Pocket-size thermometer (range -50.0 to 150.0°C)
HI 710001 Soft carrying case for HI 8014 and HI 8915
HI 710004 Soft carrying case for HI 931000
HI 710007 Shockproof, blue rubber boot for HI 931000
HI 710008 Shockproof, orange rubber boot for HI 931000
HI 710009 Shockproof, blue rubber boot (for HI8014 and HI8915)
HI 710010 Shockproof, orange rubber boot (for HI8014 and
HI8915)
HI 710031 General-purpose rugged carrying case
HI 721311 Rugged carrying case for HI 8014 and HI 8915 with
pH 4.01 and pH 7.01 solutions and screwdriver
HI 731326 Calibration screwdriver (20 pcs.)
HI 7669AW Temperature probe with 1 m (3.3') cable, for HI 8915
HI 8427 pH and ORP electrode simulator with 1 m (3.3')
coaxial cable ending in female BNC connectors
HI 931001 pH and ORP electrode simulator with LCD and 1 m
(3.3') coaxial cable ending in female BNC connectors
CE DECLARATION OF CONFORMITY
Recommendations for Users
Before using these products, make sure that they are entirely suitable for the environment in which
they are used. Operation of these instruments in residential areas could cause unacceptable interferences to radio and TV equipment.
The glass bulb at the end of the electrode is sensitive to electrostatic discharges. Avoid touching this
glass bulb at all times. During operation, ESD wrist straps should be worn to avoid possible damage to
the electrode by electrostatic discharges.
Any variation introduced by the user to the supplied equipment may degrade the instrument's EMC
performance. To avoid electrical shock, do not use these instruments when voltages at the measurement surface exceed 24 Vac or 60 Vdc.
In particular cases HI 8915 could change its operating mode. In such cases, press any key to return to
normal operating conditions.
To avoid damages or burns, do not perform any measurement in microwave ovens.
26 27
SALES AND TECHNICAL SERVICE CONTACTS
Australia:
Tel. (03) 9769.0666 • Fax (03) 9769.0699
China:
Tel. (10) 88570068 • Fax (10) 88570060
Egypt:
Tel. & Fax (02) 2758.683
Germany:
Tel. (07851) 9129-0 • Fax (07851) 9129-99
Greece:
Tel. (210) 823.5192 • Fax (210) 884.0210
Indonesia:
Tel. (21) 4584.2941 • Fax (21) 4584.2942
Japan:
Tel. (03) 3258.9565 • Fax (03) 3258.9567
Korea:
Tel. (02) 2278.5147 • Fax (02) 2264.1729
Malaysia:
Tel. (603) 5638.9940 • Fax (603) 5638.9829
Singapore:
Tel. 6296.7118 • Fax 6291.6906
South Africa:
Tel. (011) 615.6076 • Fax (011) 615.8582
Taiwan:
Tel. 886.2.2739.3014 • Fax 886.2.2739.2983
Thailand:
Tel. 66.2619.0708 • Fax 66.2619.0061
United Kingdom:
Tel. (01525) 850.855 • Fax (01525) 853.668
USA:
Tel. (401) 765.7500 • Fax (401) 765.7575
For e-mail contacts and complete list of Sales and
Technical offices, please see www.hannainst.com
28
MANPHR4 07/05
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