Hanna Instruments HI 8014, HI 8915, HI 8314, HI 9214, HI 931000 Instruction Manual

Instruction Manual

HI 8014 - HI 8314
HI 8424 - HI 8915

HI 9214 - HI 931000

HI 9622

Portable

pH Meters

http://www.hannainst.com

These Instruments are in

Compliance with the CE Directives

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, as well as a more precise idea of its
versatility. If you need additional technical information, do not
hesitate to e-mail us at [e-mail].

These instruments are in compliance with the directives
EN 50081-1 and EN 50082-1.

TABLE OF CONTENTSTABLE OF CONTENTS

TABLE OF CONTENTS

TABLE OF CONTENTSTABLE OF CONTENTS

PRELIMINARY EXAMINATION........................................................3

GENERAL DESCRIPTION ................................................................ 3

FUNCTIONAL DESCRIPTION HI 8014.............................................5

SPECIFICATIONS HI 8014 ............................................................6

FUNCTIONAL DESCRIPTION HI 8314.............................................7

SPECIFICATIONS HI 8314 ............................................................8

FUNCTIONAL DESCRIPTION HI 8915.............................................9

SPECIFICATIONS HI 8915 ..........................................................10

FUNCTIONAL DESCRIPTION HI 9214...........................................11

SPECIFICATIONS HI 9214 ..........................................................12

FUNCTIONAL DESCRIPTION HI 8424...........................................13

SPECIFICATIONS HI 8424 ..........................................................14

FUNCTIONAL DESCRIPTION HI 931000.......................................15

SPECIFICATIONS HI 931000 ...................................................... 16

FUNCTIONAL DESCRIPTION HI 9622...........................................17

SPECIFICATIONS HI 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

BATTERY REPLACEMENT .............................................................. 43

DISPLAY CODES GUIDE ...............................................................44

ACCESSORIES.............................................................................45

ELECTRODE APPLICATION REFERENCE GUIDE ................................ 52

WARRANTY ................................................................................53

OTHER PRODUCTS FROM HANNA ...............................................54

CE DECLARATION OF CONFORMITY .............................................. 55

ISO 9000 Certified
Company since 1992

2

PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION

PRELIMINARY EXAMINATION

PRELIMINARY EXAMINATIONPRELIMINARY 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.

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 DESCRIPTION

GENERAL DESCRIPTIONGENERAL DESCRIPTION

HI 8014, HI 8314, HI 8424, HI 8915, HI 931000 and HI 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
temperature compensation. HI 8014 comes supplied with: HI 1332B
combination, double-junction, refillable pH electrode and a 9 volt
battery.

• HI 8314 is 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 calibra­tion adjustments are easily made with two trimmers on the front
panel. HI 8314 comes supplied with: HI 1230B combination,
double-junction, gel pH electrode, HI 7669AW temperature probe,
a 9 volt battery and a calibration screwdriver.

• HI 8424 is a portable microprocessor-based pH/mV/°C meter. It
features a user-friendly membrane keyboard, automatic calibra­tion and error codes to guide the user in calibration and
troubleshooting. The meter has three memorized buffer values:

3

pH 4.01, 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:
HI 1230B combination, double-junction, gel pH electrode,
H I 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 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, 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, even for nontechnical personnel. HI 9214 comes supplied
with: HI 1217S screw-type combination gel pH/°C electrode, a 9
volt battery and HI 710003 soft carrying case.

• HI 931000 is a compact, microprocessor-based pH/°C meter with
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 (see page 51). HI 931000 comes sup plied with : HI 1217D
combination gel pH/°C electrode, with a built-in temperature
sensor and signal amplifier, a 9 volt battery and HI 710004 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, double­junction, gel pH electrode, HI 7669/2W temperature probe and
a 9 volt battery.

FUNCTIONAL DESCRIPTION HI 8014FUNCTIONAL DESCRIPTION HI 8014

FUNCTIONAL DESCRIPTION HI 8014

FUNCTIONAL DESCRIPTION HI 8014FUNCTIONAL DESCRIPTION HI 8014

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) 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

°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.

4

5

SPECIFICATIONS HI 8014SPECIFICATIONS HI 8014

SPECIFICATIONS HI 8014

SPECIFICATIONS HI 8014SPECIFICATIONS HI 8014

FUNCTIONAL DESCRIPTION HI 8314FUNCTIONAL DESCRIPTION HI 8314

FUNCTIONAL DESCRIPTION HI 8314

FUNCTIONAL DESCRIPTION HI 8314FUNCTIONAL DESCRIPTION HI 8314

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 (32 to 212°F)
Electrode HI 1332B combination, double-junction,

refillable pH 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.)

1

2

3
4

pH

HI 8314
membrane
pHmeter

mV

STD
1nd

Calibration at pH

6.86 or 7.01

CALIBRATION

ON

OFF

pH

°C

SLOPE
2nd
Calibration at pH

4.01 or 10.01

5

6
7
8

9

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.

6

7

SPECIFICATIONS HI 8314SPECIFICATIONS HI 8314

SPECIFICATIONS HI 8314

SPECIFICATIONS HI 8314SPECIFICATIONS HI 8314

FUNCTIONAL DESCRIPTION HI 8915FUNCTIONAL DESCRIPTION HI 8915

FUNCTIONAL DESCRIPTION HI 8915

FUNCTIONAL DESCRIPTION HI 8915FUNCTIONAL DESCRIPTION HI 8915

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 1230B combination, 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.)

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

7

8
9

10

11

12

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).

8

9

SPECIFICATIONS HI 8915SPECIFICATIONS HI 8915

SPECIFICATIONS HI 8915

SPECIFICATIONS HI 8915SPECIFICATIONS HI 8915

FUNCTIONAL DESCRIPTION HI 9214FUNCTIONAL DESCRIPTION HI 9214

FUNCTIONAL DESCRIPTION HI 9214

FUNCTIONAL DESCRIPTION HI 9214FUNCTIONAL DESCRIPTION HI 9214

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 1230B combination, double-junction,

gel-filled pH electrode BNC

and 1 m (3.3') cable (included)

Temperature HI 7669AW (included)Probe

CFM

s
n

e

rum

CAL

ins

ON

OFF

H

p

HI 9214 stick pHmeter

1

2

3

4

5

6

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.)

10

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.

11

SPECIFICATIONS HI 9214SPECIFICATIONS HI 9214

SPECIFICATIONS HI 9214

SPECIFICATIONS HI 9214SPECIFICATIONS HI 9214

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 (32 to 158°F)
Electrode HI 1217S gel combination

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.)

FUNCTIONAL DESCRIPTION HI 8424FUNCTIONAL DESCRIPTION HI 8424

FUNCTIONAL DESCRIPTION HI 8424

FUNCTIONAL DESCRIPTION HI 8424FUNCTIONAL 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.

12

13

SPECIFICATIONS HI 8424SPECIFICATIONS HI 8424

SPECIFICATIONS HI 8424

SPECIFICATIONS HI 8424SPECIFICATIONS HI 8424

FUNCTIONAL DESCRIPTION HI 931000FUNCTIONAL DESCRIPTION HI 931000

FUNCTIONAL DESCRIPTION HI 931000

FUNCTIONAL DESCRIPTION HI 931000FUNCTIONAL DESCRIPTION HI 931000

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 1230B combination, 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.)

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) 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.

14

15

SPECIFICATIONS HI 931000SPECIFICATIONS HI 931000

SPECIFICATIONS HI 931000

SPECIFICATIONS HI 931000SPECIFICATIONS HI 931000

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)

Electrode HI 1217D combination 4-in-1 gel

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.)

FUNCTIONAL DESCRIPTION HFUNCTIONAL DESCRIPTION H

FUNCTIONAL DESCRIPTION H

FUNCTIONAL DESCRIPTION HFUNCTIONAL DESCRIPTION H

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.

I I

I

I I

96229622

9622

96229622

16

17

TOP VIEW

BNC
electrode
connector

ins

e

rum ns

ON
OFF

CAL

CFM

pH

HI 9214 stick pHmeter

SPECIFICATIONS HI 9622SPECIFICATIONS HI 9622

SPECIFICATIONS HI 9622

SPECIFICATIONS HI 9622SPECIFICATIONS HI 9622

OPERATIONAL GUIDEOPERATIONAL GUIDE

OPERATIONAL GUIDE

OPERATIONAL GUIDEOPERATIONAL GUIDE

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 1230B combination gel pH electrode

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.)

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 mea­surements. If the electrode has been left dry, soak the tip (bottom
4 cm/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

pH

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 tem­perature probe to the 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. With HI 8424 and
HI 9622, when the probe is disconnected, tem­perature can also be set manually (see page

22).
Turn the meter on by pressing ON/OFF.
With HI 9622, the display will show the previ-

ous calibration date (month & date) for 3
seconds.

For HI 9214:

Connect the 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.

OFF

°C

mV

ON

OFF

month day

CAL

ON

OFF

18

19

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

TAKING pH MEASUREMENTS

ON

OFF

C

°

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

(1

½

")

the sample to be tested.

pH

Turn the rotary knob to the °C position to

°C

OFF

mV

display temperature setting on the LCD.
Measure the temperature of the sample with a

ChecktempC (or an accurate thermometer), e.g.
25°C.

Using the provided screwdriver, turn the temperature trimmer to
display the measured temperature value.

ºC

°C

°C

pH

OFF

mV

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.

pH

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.

(1

½

")

4 cm

4 cm

For HI 9214 and HI 931000: To take a pH
measurement simply submerge the tip (4cm/
1½") of the combination pH/temperature

(1

½

")

electrode into the sample to be tested.
Turn the instrument ON. Select the pH mode

(HI 8314 and HI 8915 only) or press the

pH

RANGE key until the display changes to pH
(HI 8424 and HI 9622 only).

Shake the electrode briefly and allow a couple

RANGE

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:

After submerging the electrode into the sample
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 tempera­ture 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

∆

20

21

compensate for it (HI 8424 and HI 9622 only). In this case, the
temperature probe must be disconnected.

With HI 8314 and HI 8915 when the temperature probe is discon­nected, 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 tem­perature 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).

ºC

• Press RANGE to select the pH measurement mode and immerse
the pH electrode into the solution. The displayed pH reading will
be temperature compensated.

RANGE

pH

C

°

RANGE

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, see page 42 for more informa-

(1

½

")

tion about REDOX measurements.
Note (for HI 8424 and HI 9622 only): the

resolution is 0.1 mV for values within ±400mV

mV

range.

TAKING TEMPERATURE MEASUREMENTS (EXCEPT
FOR HI 8014)

Turn the instrument ON and press °C (HI 8314 and HI 8915) or
RANGE (HI 8424 and HI 9622).

ON

OFF

Make sure the temperature probe (for HI 8314,
HI 8915, HI 8424 and HI 9622) or pH/°C

electrode (for HI 9214 and HI 931000) is con­nected 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.

H

I 9

ºC

°C

2

1

4

s

tic

k

p

H

m

e

te

r

ON

C

A

L

C

F

M

OFF

rum

n

s

ins

e

RANGE

4 cm

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).

22

mV

RANGE

For HI 931000 only: to display the measured
temperature, press and hold the °C key. When

°C

the key is released, the display will return to

°C

pH

mV

OFF

the pH reading.

23

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.

HOLD

S

pH

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.

For HI 9214: when not in use, disconnect the
electrode from the meter and cover the threaded
connector with the supplied protective cap.

ON

°C

OFF

ON

OFF

pH

OFF

pp

H CALIBRATIONH CALIBRATION

p

H CALIBRATION

pp

H CALIBRATIONH 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

HI 7004

Pour small quantities of pH 7.01 (HI 7007 or

mV

solution into two clean beakers.

HI 8007) and pH 4.01 (HI 7004 or HI 8004)

HI 7004 HI 7007HI 7004 HI 7007

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.

RINSE

CALIBRATION

24

HI 7007

HI 7007

To obtain accurate readings, use pH 7.01 (HI 7007 or HI 8007) and
pH 4.01 (HI 7004 or HI 8004) if you are going to measure acidic
samples or pH 7.01 (HI 7007 or HI 8007) and pH 10.01 (HI 7010
or HI 8010) for alkaline 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 pH 10.01.

PROCEDURE FOR HI 8014

°C

• 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.

HI 7007

Note: the electrode should be submerged ap-

proximately 4 cm (1½") into the solution.
The ChecktempC should be located close

(1

to the pH electrode.

• Take the temperature of the buffer solution

4 cm

½

")

with a ChecktempC (or an accurate ther-

25

OFF

°C

mV

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 tem­perature.

°C

ºC

°C

pH

OFF

mV

• 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).

• Remove the protective cap from the elec­trode, 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-

HI 7007

librium.

Note: the electrode should be submerged ap-

proximately 4 cm (1½") into the solution.
The temperature probe should be lo­cated close to the pH electrode.

• Press °C to display the temperature of the buffer (e.g. 20°C).

°C

ºC

(1

4 cm

½

")

pH

A

P

°C

• Rinse and immerse the pH electrode in
pH 4.01 or pH 10.01 buffer (2nd calibra­tion point) and stir gently.

HI 7004

• Wait a couple of minutes and adjust the mV/pH trimmer until
the LCD shows the pH value at the noted temperature (see
page 35 for pH versus temperature chart).

pH

mV/pH

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.

ON

OFF

pH

• 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 tempera­ture chart on page 35).

pH

OFFSET

• Rinse and immerse the pH electrode in
pH 4.01 or pH 10.01 buffer (2nd calibra­tion point) and stir gently.

HI 7004

• 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.

pH

SLOPE

26

The pH calibration is now complete.

27

PROCEDURE FOR HI 8424

• Switch the meter on after connecting the

ON

OFF

pH electrode and the temperature probe.

• Remove the protective cap from the elec­trode, 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

HI 7007

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

(1

4 cm

½

")

be close to the pH electrode.

• Press RANGE to display pH measurement.

RANGE

• 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).

• Rinse the electrode and temperature probe
before immersing them into pH 4.01 /
pH 10.01 calibration buffer, stir gently
and wait for thermal equilibrium.

• The symbol "E5" should disappear and a

HI 7004

pH

temperature compensated buffer value will
flash.

• Wait until the pH symbol stops flashing.

• Press CFM to confirm the calibration.

pH

CFM

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.
If for some reason the temperature probe is out of order, or a manual

temperature compensation is required, follow the procedure below:

• Make sure the temperature probe is de-

tached.

RANGE

• Press RANGE to select the temperature
mode.

CAL

pH

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

pH

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.

CFM

28

• 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

HI 7007

C

°

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.

ºC

• Follow the calibration procedure on the previous page.

29

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
with some pH 7.01 solution, 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 ∆".

CAL

CFM

s

n

e

L
A

C

rum

ins

FF

ON

O

r

te
e
m
H

p
k

tic
s
4
1
2

9
I
H

ON

OFF

• Rinse the pH electrode with some pH 4.01
or 10.01 buffer solution (2nd calibration
point).

• Dip the electrode into the pH 4.01 (or

CFM

s

n

e

L
A

C

rum

ins

N

FF

O

O

r
te
e
m

H
p

k
tic

s
4
1

2
9
I
H

pH 10.01) buffer solution.

• Stir gently and wait until the stability
indicator "∆" stops flashing.

HI 7004

∆

• Press CFM to confirm the acceptance of

HI 7007

the second buffer solution.

M
F
C

s
n

e

L
A

rum

C

ins

ON

OFF

r
e

t
e
m
H
p
k
ic

t

s
4
1
2
9
I
H

pH calibration is now complete and the meter
returns to the measurement mode.

PROCEDURE FOR HI 931000

• Turn the meter on.

(1

4 cm

½

")

Note: the stability indicator "∆" blinks when

the electrode is not immersed in the
solution.

CFM

ON

OFF

• Press CAL and the display will flash "7.01 ∆".

CAL

∆

∆

• Wait until the stability indicator "∆" stops
flashing.

• Press CFM to confirm the first buffer solu-

CFM

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
is performed.

• The LCD will now flash "4.01 ∆". If the
CAL key is pressed, the slope calibration
will change to "10.01 ∆".

30

• 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-

HI 7007

tly and wait a couple of minutes for
thermal equilibrium.

Note: the electrode should be submerged

approximately 4 cm (1½") into the

(1

4 cm

½

")

solution.

• When electrode has stabilized, the sta­bility indicator "∆" stops flashing.

∆

CFM

∆

• Press CFM to confirm the first buffer solution.

31

• 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 calibra­tion is performed.

• The LCD will now blink "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
pH 10.01) buffer solution.

HI 7004

• Stir gently and wait until the stability
indicator "∆" stops flashing.

• Press RANGE to display pH measurement.

RANGE

• Press CAL to start calibration and to display again the last
calibration date.

∆

CAL

month day

CAL

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.

month day

CAL

∆

• Press CFM to confirm the second buffer

CFM

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.

ON

OFF

• Remove the protective cap from the elec­trode, 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-

proximately 4 cm (1½") into the solution.
The temperature probe should be close
to the pH electrode.

32

CAL

month day

HI 7007

(1

4 cm

½

")

• Press CFM.

CFM

• The "day" symbol and the two right digits will start blinking.
Using the UP and DOWN keys, enter the day.

month day

CAL

• Press CFM to enter the new calibration date. The meter will
request pH 7.01 buffer value and the display will show:

CFM

If "Er-7" appears, the calibration solution is
wrong or is out of specifications and needs

pH
CAL

pH
CAL

to be replaced.

• When "CAL" disappears and the meter
displays "CFM", press CFM to confirm the

CFM

offset calibration.

33

• The meter will request pH 4.01 or 10.01
buffer showing "Er-4". This indicates that

pH
CAL

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 / pH 10.01 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.

pH
CAL

HI 7004

• When "CAL" disappears and the meter displays "CFM" press CFM
to confirm the slope calibration.

pH

CFM

CFM

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.
If for some reason the temperature probe is out of order, or a manual

temperature compensation is required, follow the procedure below:

• Make sure the temperature probe is detached.

• Press RANGE to select the temperature
mode.

RANGE

• 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

°C

ChecktempC (or an accurate thermometer),
e.g. 20°C.

• Use the UP and DOWN keys to set the temperature manually to
the above value.

ºC

• Follow the rest of the calibration procedure as described previously
(see page 32).

pp

H VALUES AT VARIOUSH VALUES AT VARIOUS

p

H VALUES AT VARIOUS

pp

H VALUES AT VARIOUSH VALUES AT VARIOUS

TEMPERATURESTEMPERATURES

TEMPERATURES

TEMPERATURESTEMPERATURES

For manual temperature compensation during calibration (HI 8014,
HI 8424 and HI 9622), 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

35

95

4.03

6.84

6.99

9.10

40

104

4.04

6.84

6.98

9.07

45

113

4.05

6.83

6.98

9.04

50

122

4.06

6.83

6.98

9.01

55

131

4.07

6.84

6.98

8.99

60

140

4.09

6.84

6.98

8.97

65

149

4.11

6.85

6.99

8.95

70

158

4.12

6.85

6.99

8.93

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.

34

35

TEMPERATURE CALIBRATIONTEMPERATURE CALIBRATION

TEMPERATURE CALIBRATION

TEMPERATURE CALIBRATIONTEMPERATURE CALIBRATION

TROUBLESHOOTING GUIDETROUBLESHOOTING GUIDE

TROUBLESHOOTING GUIDE

TROUBLESHOOTING GUIDETROUBLESHOOTING GUIDE

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
more information.

mm

V OUTPUTV OUTPUT

m

V OUTPUT

mm

V OUTPUTV 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.

SYMPTOMS PROBLEM SOLUTION

The meter fails to cali­brate 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 tem­perature probe

For HI 8424 only

Display shows "E1"

Display shows "E2"
Display shows "E3"
Display shows "E4"

Erroneous buffer so­lution used for
calibration.

An out of order pH
electrode

The electrode is not
working or the refer­ence junction is
clogged

Erroneous buffer so­lution used for slope
calibration

An out of order pH
electrode

A clogged or an out
of order pH electrode

An out of order probe

Out of range- pH
scale

Out of range- °C
scale

Out of range- mV
scale

Erroneous buffer so­lution used for offset
calibration

An out of order pH
electrode

Check the buffer solution and
replace it if necessary

Replace the pH electrode
Leave the electrode in a stor-

age solution after cleaning the
junction. If problem persists,
replace the electrode

Check the buffer solution and
replace it if necessary

Follow the cleaning procedure.
If this doesn't work replace
the electrode

Follow the cleaning procedure
and replace the pH electrode
if necessary

Replace the probe.

a) Check the calibration
b) Ensure that the pH value

is between 0 and 14
c) Check the level of electrolyte

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

36

37

SYMPTOMS PROBLEM SOLUTION

For HI 8424 only

Display shows "E5"

For HI 9622 only

Display shows "pH----"

Display shows "°C"
blinking

Display shows "mV----"
Display shows "Er-7"

Display shows "Er-4"

Display shows "Er-10"

For HI9214 & HI931000 only

Ec

Eb
Er

Erroneous buffer so­lution used for slope
calibration

An out of order pH
electrode

Out of range- pH
scale

No temperature
probe attached

Out of range- mV
scale

Erroneous pH 7 buffer
solution used for off­set calibration

An out of order pH
electrode

Erroneous pH 4 buffer
solution used for
slope calibration

An out of order pH
electrode

Erroneous pH 10
buffer solution used
for slope calibration

An out of order pH
electrode

Wrong buffer
Unfit electrode

Low battery
Over-Range
Dry electrode

38

Use fresh buffer solution

Replace the electrode

a) Check the calibration
b) Ensure that the pH value

is between 0 and 14
c) Check the level of electrolyte

and the state of the electrode
itself

Make sure the temperature
probe is attached properly

Make sure the mV value is
within ±1999

Use fresh pH 7 buffer solution

Replace the electrode
Use fresh pH 4 buffer solution

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.

ELECTRODE CONDITIONINGELECTRODE CONDITIONING

ELECTRODE CONDITIONING

ELECTRODE CONDITIONINGELECTRODE CONDITIONING

AND MAINTENANCEAND MAINTENANCE

AND MAINTENANCE

AND MAINTENANCEAND 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.

39

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.

For AmpHel® electrodes:

If the electrode does not respond to pH changes, the battery is run
down and the electrode should be replaced.

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
your measurements.

STORAGE

To minimize clogging and assure a quick response time, the glass
bulb and the junction should be kept moist 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 or, in its absence, HI 7007
pH 7.01 Buffer Solution.

Follow the Preparation Procedure above before taking measurements.
Note: NEVER STORE THE ELECTRODE IN DISTILLED OR DEIONIZED

WATER.

PERIODIC MAINTENANCE

Inspect the electrode and the cable. The cable used for 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.

AmpHel® is a registered Trademark of "Hanna Instruments"

40

CLEANING PROCEDURE

General Soak in Hanna HI 7061 General Cleaning Solu-

tion for approximately ½ hour.
Removal of films, dirt or deposits on the membrane/junction:
Protein Soak in Hanna HI 7073 Protein Cleaning Solu-

tion for 15 minutes.
Inorganic Soak in Hanna HI 7074 Inorganic Cleaning

Solution for 15 minutes.
Oil/grease Rinse with Hanna HI 7077 Oil and Fat Cleaning

Solution.
IMPORTANT: After performing any of the 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 HI 70300 Storage Solution for
at least 1 hour before taking a measurement.

TROUBLESHOOTING

Evaluate your electrode performance based on the following.

• Noise (Readings fluctuate up and down) could be due to:

- Clogged/Dirty Junction: Refer to the Cleaning Procedure
above.

- Loss of shielding due to low electrolyte level (in refillable
electrodes only): refill with HI 7071 for single junction or
HI 7082 for double junction electrodes.

• Dry Membrane/Junction: Soak in Storage Solution HI 70300
for at least 1 hour.

• Drifting: Soak the electrode tip in warm Hanna Solution
HI 7082 for one hour and rinse tip with distilled water (refill with
fresh HI 7071 for single junction electrodes and HI 7082 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 Solu­tion HI 7061 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.

41

HI 8014
HI 8314
HI 8424
HI 8915

BATTERY

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.

TAKING REDOX MEASUREMENTSTAKING REDOX MEASUREMENTS

TAKING REDOX MEASUREMENTS

TAKING REDOX MEASUREMENTSTAKING REDOX MEASUREMENTS

BATTERY REPLACEMENTBATTERY REPLACEMENT

BATTERY REPLACEMENT

BATTERY REPLACEMENTBATTERY REPLACEMENT

All meters are powered by a 9V battery that is located on the rear of
the instrument.

When the battery becomes weak:

- HI 8014, reaching a certain threshold, automatically switches the
LCD off.

- HI 8314, HI 8915, HI 8424 display a blink-
ing additional decimal point on the left side
of the LCD.

- HI 9214 and HI 931000 display "Eb".

HI 8014, HI 8314, HI 8424, HI 8915 and HI 9622 have the
capability to take ORP measurements.

An optional ORP electrode must be used to perform these measure­ments.

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.

- HI 9622 displays "BAT" on the left side of
the LCD.

pH

BAT

When the low battery indicator appears only a few hours of battery
life is remaining. A low battery may also result in loss of calibration
data or unreliable measurements. It is recommended that the battery
be replaced 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.

Note: the instrument should be recalibrated after changing the

battery.

HI 8014 - HI 8314
HI 8424 - HI 8915

HI 9622

HI 9214

HI 8114
HI 8414
HI 9214

HI 931000

9 VOLT BATTERY

SLIDE

42

43

DISPLAY CODE GUIDEDISPLAY CODE GUIDE

DISPLAY CODE GUIDE

DISPLAY CODE GUIDEDISPLAY CODE GUIDE

ACCESSORIESACCESSORIES

ACCESSORIES

ACCESSORIESACCESSORIES

HI 8014, HI 8314, HI 8424, HI 8915, HI 9214 AND
HI 9622

°C Symbol indicates the meter is in temperature mode. A flashing

°C symbol in HI 9622 means that the temperature probe is not
connected or the cable is damaged

pH Symbol indicates the meter is in pH mode.

HI 8014, HI 8314, HI 8424, HI 8915 AND HI 9622

mV Symbol indicates the meter is in mV mode.

HI 8424

E1 Out of range in pH scale
E2 Out of range in °C scale
E3 Out of range in mV scale
E4 Erroneous buffer solution used for offset calibration or out of order

electrode

E5 Erroneous buffer solution used for slope calibration or out of order

electrode

HI 8915

S Symbol to indicate the display is frozen (Hold function).

HI 9214 AND 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.

HI 9622

pH---- Out of range in pH scale
mV---- Out of range in mV scale
Er-7 Erroneous pH 7 buffer solution used for offset calibration or

out of order electrode

Er-4 Erroneous pH 4 buffer solution used for slope calibration or

out of order electrode

Er-10 Erroneous pH 10 buffer solution used for slope calibration or

out of order electrode

BAT Low battery

pH CALIBRATION SOLUTIONS

HI 70004P pH 4.01 Buffer Sachets, 25 x 20 mL
HI 7004M pH 4.01 Buffer Solution, 230 mL
HI 7004L pH 4.01 Buffer Solution, 460 mL
HI 7006M pH 6.86 Buffer Solution, 230 mL
HI 7006L pH 6.86 Buffer Solution, 460 mL
HI 70007P pH 7.01 Buffer Sachets, 25 x 20 mL
HI 7007M pH 7.01 Buffer Solution, 230 mL
HI 7007L pH 7.01 Buffer Solution, 460 mL
HI 7009M pH 9.18 Buffer Solution, 230 mL
HI 7009L pH 9.18 Buffer Solution, 460 mL
HI 70010P pH 10.01 Buffer Sachets, 25 x 20 mL
HI 7010M pH 10.01 Buffer Solution, 230 mL
HI 7010L pH 10.01 Buffer Solution, 460 mL

pH CALIBRATION SOLUTIONS IN FDA APPROVED
BOTTLE

HI 8004L pH 4.01 Buffer Solution, 460 mL
HI 8006L pH 6.86 Buffer Solution, 460 mL
HI 8007L pH 7.01 Buffer Solution, 460 mL
HI 8009L pH 9.18 Buffer Solution, 460 mL
HI 8010L pH 10.01 Buffer Solution, 460 mL

ELECTRODE STORAGE SOLUTIONS

HI 70300M Storage Solution, 230 mL
HI 70300L Storage Solution, 460 mL

ELECTRODE STORAGE SOLUTIONS IN FDA
APPROVED BOTTLE

HI 80300M Storage Solution, 230 mL
HI 80300L Storage Solution, 460 mL

ELECTRODE CLEANING SOLUTIONS

HI 70000P Electrode Rinsing Sachets, 25 x 20 mL
HI 7061M General Cleaning Solution, 230 mL
HI 7061L General Cleaning Solution, 460 mL
HI 7073M Protein Cleaning Solution, 230 mL
HI 7073L Protein Cleaning Solution, 460 mL

44

45

HI 7074M Inorganic Cleaning Solution, 230 mL
HI 7074L Inorganic Cleaning Solution, 460 m L
HI 7077M Oil & Fat Cleaning Solution, 230 mL
HI 7077L Oil & Fat Cleaning Solution, 460 mL

pH ELECTRODES

B = BNC CONNECTION PLUG + 1 m (3.3’) CABLE

ELECTRODE CLEANING SOLUTIONS IN FDA
APPROVED BOTTLE

HI 8061M General Cleaning Solution, 230 mL
HI 8061L General Cleaning Solution, 460 mL
HI 8073M Protein Cleaning Solution, 230 mL
HI 8073L Protein Cleaning Solution, 230 mL
HI 8077M Oil & Fat Cleaning Solution, 230 mL
HI 8077L Oil & Fat Cleaning Solution, 460 mL

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

REFILLING ELECTROLYTE SOLUTIONS IN FDA
APPROVED BOTTLE

HI 8071 3.5M KCl + AgCl Electrolyte, 4 x 50 mL, for single

junction electrodes

HI 8072 1M KNO3 Electrolyte, 4 x 50 mL
HI 8082 3.5M KCl Electrolyte, 4 x 50 mL, for double junction

electrodes

ORP PRETREATMENT SOLUTIONS

HI 7091M Reducing Pretreatment Solution, 230 mL
HI 7091L Reducing Pretreatment Solution, 460 mL
HI 7092M Oxidizing Pretreatment Solution, 230 mL
HI 7092L Oxidizing Pretreatment Solution, 460 mL

S = SCREW-TYPE CONNECTOR

HI 1043B / HI 1040S

Glass-body, double junction, refillable, combination pH electrode.
Use: strong acid/alkali.

12 mm

0.5"

HI 1043

"S" VERSION

9.5mm DIA

120 mm

4.7"

0.37"

HI 1053B / HI 1050S

Glass-body, triple ceramic, conic shape, refillable, combination pH
electrode. Use: emulsions.

12 mm

0.5"

HI 1053

"S" VERSION

120 mm

4.7"

HI 1083B

Glass-body, micro, Viscolene, non-refillable, combination pH electrode.
Use: biotechnology, micro titration.

HI 1083

12 mm

0.5"

5 mm

0.2"

120 mm

3 mm

0.12"

"

3.0 mm DIA

0.12"

HI 1131B / HI 1111S

Glass-body, single junction, refillable, combination pH electrode.
Use: general purpose.

9.5mm DIA

0.37"

12 mm

0.5"

46

HI 1131

"S" VERSION

47

120 mm

4.7"

HI 1330B / HI 1310S

Glass-body, semimicro, single junction, refillable, combination pH
electrode. Use: laboratory.

HI 1330

"S" VERSION

120 mm

4.7"

5mm DIA

0.2"

5mm

0.2"

HI 1331B / HI 1311S

Glass-body, semimicro, single junction, refillable, combination pH
electrode. Use: flasks.

HI 1331

"S" VERSION

8 mm

0.3"

7.5mm DIA

210 mm

8.25"

0.29"

HI 1230B / HI 1210S

Plastic-body (Ultem®), double junction, gel-filled, combination pH
electrode. Use: general purpose.

12 mm

0.5"

HI 1230

120 mm

"

"

4.7"

HI 2031B / HI 2020S

Glass-body, semimicro, conic, refillable, combination pH electrode. Use:
semisolid products.

6 mm

0.25"

HI 2031

75 mm

"

"

2.95"

HI 1332B / HI 1312S

Plastic-body (Ultem®), double junction, refillable, combination pH
electrode. Use: general purpose.

12 mm

0.5"

FC 100B

Plastic-body (Kynar®), double junction, refillable, combination pH
electrode. Use: general purpose for food industry.

12 mm

0.5"

FC 100

120 mm

4.7"

FC 200B / FC 200S
Plastic-body (Kynar®), single junction, conic, Viscolene, non-refillable,
combination pH electrode. Use: meat & cheese.

6 mm

0.25"

FC 200

75 mm

2.95"

FC 210B

Glass-body, double junction, conic, Viscolene, non-refillable combina­tion pH electrode. Use: milk, yogurt.

12 mm

0.5"

FC 210

120 mm

4.7"

FC 220B

Glass-body, triple ceramic, single junction, refillable, combination pH
electrode. Use: food processing.

12 mm

0.5"

FC 220

9.5mm DIA

120 mm

4.7"

0.37"

FC 911B

Plastic-body (Kynar®), double junction, refillable with built-in ampli­fier, combination pH electrode. Use: very high humidity.

12 mm

0.5"

HI 1332

"S" VERSION

Ultem® is registered Trademark of "General Electrics Co."

120 mm

4.7"

48

FC 911

110 mm

4.3"

Kynar® is registered Trademark of "Pennwalt Corp."

49

HI 1413B / HI 1410S

Glass-body, single junction, flat tip, Viscolene, non-refillable combina­tion pH electrode. Use: surface measurement.

12 mm

0.5"

HI 1413

110 mm

4.3"

ORP ELECTRODES

HI 3131B / HI 3111S

Glass-body, refillable, combination platinum ORP electrode.
Use: titration.

12 mm

0.5"

HI 3131

150 mm

50

5.9"

120 mm

4.7"

120 mm

4.7"

12 mm

0.5"

12 mm

0.5"

"S" VERSION

HI 3230B / HI 3210S

Plastic-body (Ultem®), gel-filled, combination platinum ORP elec-
trode. Use: general purpose.

HI 3230

"S" VERSION

HI 4430B / HI 4410S

Plastic-body (Ultem®), gel-filled, combination gold ORP electrode.
Use: general purpose.

HI 4430

"S" VERSION

Ultem® is registered Trademark of "General Electrics Co."

EXTENSION CABLES FOR SCREW-TYPE ELECTRODES
(SCREW TO BNC CONNECTOR)

HI 7855 SERIES CABLE CONNECTORS

CONNECTOR AND 3.0 mm (0.12") CABLE WITH BNC

CONNECT TO
SCREW TYPE
ELECTRODES

CONNECT TO THE

BNC SOCKET

OF THE METER

HI 7855/1 Extension cable 1 m (3.3') long
HI 7855/3 Extension cable 3 m (9.9') long
HI 7855/5 Extension cable 5 m (16.5') long
HI 7855/10 Extension cable 10 m (33') long
HI 7855/15 Extension cable 15 m (49.5') long

OTHER ACCESSORIES

HI 710001 Soft carrying case for HI 8014, HI 8314, HI 8424,

HI 8915 and HI 9622 (formerly BORG)
HI 710003 Soft carrying case for HI 9214 (formerly BORGPIC)
HI 710004 Soft carrying case for HI 931000, instrument only

(formerly BORGT)

ChecktempC Pocket-size thermometer (range -50.0 to 150.0°C)
HI 76405 Electrode holder
HI 731326 Small screwdrivers (20 each) for calibration (HI 8014,

HI 8314, HI 8915 only)
HI 7669AW Temperature probe with 1 m (3.3') screened cable
HI 721311 Rugged carrying case for HI 8014, HI 8314, HI 8915

with pH 4.01 and pH 7.01 solutions and screwdriver
HI 721312 Rugged carrying case for HI 8424 with pH 4.01 and

pH 7.01 solutions
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
HI 710007 Shockproof, blue rubberboot for HI 931000 (formerly

HI 935BTB)
HI 710008 Shockproof, orange rubberboot for HI 931000 (for-

merly HI 935BTY)

HI 710009 Shockproof, blue rubberboot (except for HI 931000)
HI 710010 Shockproof, orange rubberboot (except for HI 931000)
HI 710031 Rugged carrying case (formerly PKGCASE)
MANPHR2 Instructions manual

51

ELECTRODE APPLICATIONELECTRODE APPLICATION

ELECTRODE APPLICATION

ELECTRODE APPLICATIONELECTRODE APPLICATION

REFERENCE GUIDEREFERENCE GUIDE

REFERENCE GUIDE

REFERENCE GUIDEREFERENCE GUIDE

Application Electrodes

1. Aquarium HI1332B, HI1911B, HI1312S

2. Bath-water HI1910B, HI1130B, HI1110S

3. Beer HI1131B, HI 1111S

4. Bread HI2031B, FC200B, HI2020S, FC200S

5. Cheese FC 200B, FC200S

6. Dairy products FC911B, FC100B

7. Dirty water HI1910B, H I 1912B

8. Emulsions HI1053B, HI1050S

9. Environment HI 1230B, HI 1210S

10. Flasks HI1331B, HI1310S

11. Food industry general use FC 911B, FC100B

12. Fruit FC200B, FC220B, FC 200S

13. Fruit juices, organic FC210B

14. Galvanizing waste solution HI1130B, HI 1912B, HI1110S

15. Heavy-duty applications HI 1135B, H I 1115S

16. High purity water HI1053B, HI1050S

17. Horticulture HI1053B, FC200B, HI1050S, FC200S

18. In-line applications HI1134B, HI 1135B, HI2114B, HI 2910B,

19. Laboratory general use HI 1131B, HI1230B, H I 1332B, HI1330B

20. Leather HI1413B, HI1410S

21. Lemon juice FC100B

22. Meat FC 200B, HI2031B, FC200S, HI2020S

23. Micro plate sampling of less than HI 1083B, HI1080S
100 mL

24. Milk and Yogurt FC210B

25. Paints HI 1053B, HI1050S

26. Paper HI1413B, H I 1410S

27 . Photographic chemicals HI1230B, HI1210S
28 . Quality control HI 1332B, HI1312S

29. Sausages FC200B, HI2031B, FC200S, HI2020S

30. Semi-solid products HI2031B, HI2020S

31. Skin HI1413B, HI1410S

32. Soil samples HI 1230B, HI1210S

33. Solvents HI 1043B, H I1040S

34. Strong acid HI 1043B, HI1040S

35. Submersion application HI 1130B, HI1110S

36. Surface measurements HI1413B, HI1410S

37. Swimming pool H I1130B, HI 2114B, HI 2910B

38. Titrations with constant HI1131B, HI1111S
temperature range

39. Titrations with wide temperature HI1131B, H I 1111S
range

40. Very high humidity FC911B, HI 1912B, HI1911B

41. Vials and test tube HI1330B, H I1310S

42. Wine processing FC220B

HI 1114S, HI1115S
HI1111S, HI1210S, HI1312S, H I 1310S

WARRANTYWARRANTY

WARRANTY

WARRANTYWARRANTY

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. The

electrodes and the probes are warranted for a period of 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.

To validate your warranty, fill out and return the enclosed warranty
card within 14 days from the date of purchase.

All rights are reserved. Reproduction in whole or in part is
prohibited without the written consent of the copyright owner,
Hanna Instruments Inc., 584 Park East Drive, Woonsocket, Rhode
Island, 02895 , USA.

B = BNC-type connector
S = Screw-type connector

52

Hanna Instruments reserves the right to modify the design, construc­tion and appearance of its products without advance notice.

53

OTHER PRODUCTS FROM HANNAOTHER PRODUCTS FROM HANNA

OTHER PRODUCTS FROM HANNA

OTHER PRODUCTS FROM HANNAOTHER PRODUCTS FROM HANNA

• CALIBRATION AND MAINTENANCE SOLUTIONS

• CHEMICAL TEST KITS

• CHLORINE METERS

• CONDUCTIVITY/TDS METERS

• DISSOLVED OXYGEN METERS

• HYGROMETERS

• ION SPECIFIC METERS (Colorimeters)

• MAGNETIC STIRRERS

• Na/NaCl METERS

• pH/ORP/Na ELECTRODES

• PROBES (DO, µS/cm, RH, T, TDS)

• PUMPS

• REAGENTS

• SOFTWARE

• THERMOMETERS

• TITRATORS

• TRANSMITTERS

• TURBIDITY METERS

• Wide Range of Accessories

CE DECLARATION OF CONFORMITYCE DECLARATION OF CONFORMITY

CE DECLARATION OF CONFORMITY

CE DECLARATION OF CONFORMITYCE DECLARATION OF CONFORMITY

Most Hanna meters are available in the following formats:

• BENCH-TOP METERS

• POCKET-SIZED METERS

• PORTABLE METERS

• PRINTING/LOGGING METERS

• PROCESS METERS (Panel and Wall-mounted)

• WATERPROOF METERS

• METERS FOR FOOD INDUSTRY

For additional information, contact your dealer or the nearest Hanna
Customer Service Center. You can also e-mail us at:
[e-mail].

54

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 24VAC or 60VDC.

For HI 8424 and HI 9622: the position of the probes' cable (the pH electrode and the temperature
probe) could effect the measurements. In order to minimize these effects due to external electromag­netic fields, it is recommended to keep parallel the cables of the two probes and as close as possible
to the instrument.

In particular cases HI 8915 could change its operating mode. In such cases, press any key to return to
normal operating conditions.

In particular cases, HI 8314 and HI 9214 could turn off. In such cases, turn the meters on by pressing
the ON/OFF key.

To avoid damages or burns, do not perform any measurement in microwave ovens.

55

HANNA LITERATUREHANNA LITERATURE

HANNA LITERATURE

HANNA LITERATUREHANNA LITERATURE

LAB RECORDING WATER ANALYSIS HANDBOOK

ENVIROCARE GENERAL CATALOG

These and many others catalogs, handbooks and leaflets are avail­able from Hanna. To receive your free copy, contact your dealer or the
nearest Hanna Customer Service Center.

http://www.hannainst.com

PRINTED IN PORTUGAL

MANPHR2

03/97