Hanna Instruments HI 8014 User manual

HI8014
Portable pH Meter
INSTRUCTION MANUAL

Thank you for choosing a Hanna Instruments product.
Please read this instruction manual carefully before
using the instrument.
This manual will provide you with the necessary
information for correct use of the instrument, as well
as a precise idea of its versatility.
If you need additional technical information, do not
hesitate to e‑mail us at [email protected] or view
our worldwide contact list at www.hannainst.com.
Dear
Customer,
All rights are reserved. Reproduction in whole or in part is prohibited
without the written consent of the copyright owner, Hanna Instru-
ments Inc., Woonsocket, Rhode Island, 02895, USA.

3
Preliminary Examination ........................................................
Safety Measures ...................................................................
Description............................................................................
Functional Description............................................................
Specifications........................................................................
Operational Guide .................................................................
pH Calibration.......................................................................
Taking REDOX measurements .................................................
mV output ............................................................................
Display Codes Guide ..............................................................
Electrode Conditioning and Maintenance.............................13
Battery Replacement..........................................................16
Accessories........................................................................17
12
13
4
4
5
7
12
18
5
6
13
10
14
TABLE OF CONTENTS
19

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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.
Each HI8014 meter is supplied with:
• HI1230B ‑plastic body, double jonction, gel, combination
• pH electrode with BNC and 1 m cable
• 9V battery
• calibration screwdriver
• calibration certificate
• instruction manual
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.
INCLUDED
Before using this product, make sure that it is entirely suitable
for your specific application and for the environment in which it
is used.
Operation of this instrument may cause interference to other
electronic equipment, requiring the operator to take steps to
correct interference. Any variation introduced by the user to
the supplied equipment may degrade the instrument’s EMC
performance.
To avoid damages or burns, do not put the instrument in
microwave ovens. For your and the instrument’s safety, do not
use or store the instrument in hazardous environments.
SAFETY MEASURES

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HI8014 is hand‑held pH/mV meter with interchangeable plastic‑
body electrode, simple controls on the front panel, low battery
detector, large easy‑to‑read display, simple calibration procedure
and lightweight ABS plastic housing.
HI8014 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.
DESCRIPTION
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.
FUNCTIONAL DESCRIPTION
1
2
3
4

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SPECIFICATIONS
Range pH
mV
0.00 to 14.00
±1999
Resolution pH
mV
0.01
1
Accuracy pH
@ 25 °C / 77 °F mV
±0.01
±1
pH Calibration Manual 2 point through offset and
slope trimmers
Offset Calibration ±1 pH
Slope Calibration from 85 to 105%
Temperature
Compensation
Manual from 0 to 100 ºC
(32 to 212 ºF)
pH Electrode
HI1230B combination, double‑
junction, gel‑filled, with BNC
connector and 1 m (3.3’) cable
(included)
Input Impedance 1012 Ω
Environment 0 to 50 ºC (32 to 122 ºF);
max 95% RH non‑condensing
Battery Type
Life
9V (1 pcs.)
100 hours of continuous use
Dimensions 185 x 82 x 53 mm
(7.3 x 3.2 x 2.1”)
Weight 265 g (9.3 oz.)

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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 pH 7.01 or pH 4.01 buffer solution for
a few hours or overnight to reactivate it.
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.
OPERATIONAL GUIDE

8
pH MEASUREMENTS
To take a pH measurement simply
submerge the tip (4 cm/1½”) of the
electrode and a HI98501 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 HI98501
e.g. 25 °C..
Turn the rotary knob to the pH position to
display the pH measurement.
Shake the electrode briefly and allow a
few minutes for the electrode to adjust and
stabilize. The display will show the pH value
compensated for the manually adjusted
temperature.
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
cross contamination. 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 temprature must be taken into
consideration. HI8014 provides only for manual compensation.
OPERATIONAL GUIDE

9
ORP MEASUREMENTS
Connect an ORP electrode to the BNC socket on the top of the
meter.
To enter the “mV” mode (ORP Oxidation Reduction Potential)
switch the rotary knob to the mV position.
To measure the mV of a sample 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.
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 HI70300 storage solution in the protective cap.
Operational Guide
OPERATIONAL GUIDE

10
For best accuracy, frequent calibration of the instrument is recom‑
mended. 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 (HI7007) and pH 4.01 (HI7004)
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.
For accurate readings, use pH 7.01 (HI7007) and pH 4.01
(HI7004) if you are going to measure acidic samples, or pH 7.01
(HI7007) and pH 10.01 (HI7010) for alkaline measurements.
If you need to calibrate HI8014 to NBS standards, use pH 6.86
(HI7006) instead of pH 7.01 and pH 9.18 (HI7009) instead
of pH 10.01.
PROCEDURE
• 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 HI98501 or
another accurate thermometer, e.g. 20°C.
pH CALIBRATION
pH 7.01

11
Note: The electrode should be submerged approximately
4 cm (1½”) into the solution. The HI98501 should be
located as close as possible to the pH electrode.
• 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.
• 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 12 for pH vs. temperature
chart).
• Rinse and immerse pH electrode and
thermometer in pH 4.01 or pH 10.01
buffer (2nd calibration point); stir gently.
• Wait a few minutes, then adjust the
mV/pH trimmer until the LCD shows the
pH value at the noted temperature (see
page 12 for pH vs. temperature chart).
The pH calibration is now complete.
pH CALIBRATION
pH 4.01/pH 10.01

12
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.
HI8014 has the capability to take ORP measurements, 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.
TAKING REDOX MEASUREMENTS
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 10.25
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
pH CALIBRATION

13
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 centigrade degree.
°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.
mV OUTPUT DISPLAY CODES GUIDE

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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.
* Only available with refillable electrodes.
ELECTRODE CONDITIONING AND MAINTENANCE

15
If the bulb and/or junction are dry, soak the electrode in HI70300
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 HI7082 (3.5M KCl Electrolyte Solution) for
double junction or HI7071 (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 HI70300 Storage Solution.
Follow the Preparation Procedure (see page 14) 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 (HI7071 for single
junction or HI7082 for double junction electrodes). Allow the
electrode to stand upright for 1 hour. Follow the Storage Procedure
(see page 14).
ELECTRODE CONDITIONING AND MAINTENANCE

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CLEANING PROCEDURE
General Soak in Hanna HI7061 General Cleaning Solution
for approximately 30 minutes.
Removal of films, dirt or deposits on the membrane/junction:
Protein Soak in Hanna HI7073 Protein Cleaning Solution
for 15 minutes.
Inorganic Soak in Hanna HI 7074 Inorganic Cleaning Solution
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.
ELECTRODE CONDITIONING AND MAINTENANCE

17
• Slow Response/Excessive Drift: Soak the tip in Hanna Solution
HI7061 for 30 minutes, rinse thoroughly in distilled water and
then follow the Cleaning Procedure (see page 16).
• 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.
ELECTRODE CONDITIONING AND MAINTENANCE

18
This meter is powered by a 9V battery that is located on the
rear of the instrument.
When the battery becomes weak, the meters provide the following:
reaching a certain minimum threshold, automatically switches
the LCD off.
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 safe 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.
BATTERY REPLACEMENT

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ACCESSORIES
pH CALIBRATION SOLUTIONS
HI70004P pH 4.01 buffer solution, 20 mL sachet, 25 pcs
HI7004M pH 4.01 buffer solution, 230 mL bottle
HI7004L pH 4.01 buffer solution, 500 mL bottle
HI7006M pH 6.86 buffer solution, 20 mL bottle
HI7006L pH 6.86 buffer solution, 500 mL bottle
HI70007P pH 7.01 buffer solution, 20 mL sachet, 25 pcs
HI7007M pH 7.01 buffer solution, 230 mL bottle
HI7007L pH 7.01 buffer solution, 500 mL bottle
HI7009M pH 9.18 buffer solution, 230 mL bottle
HI7009L pH 9.18 buffer solution, 500 mL bottle
HI70010P pH 10.01 buffer solution, 20 mL sachet, 25 pcs
HI7010M pH 10.01 buffer solution, 230 mL bottle
HI7010L pH 10.01 buffer solution, 500 mL bottle
ELECTRODE STORAGE SOLUTIONS
HI70300M Storage solution, 230 mL bottle
HI70300L Storage solution, 500 mL bottle
ELECTRODE CLEANING SOLUTIONS
HI70000P Electrode rinsing solution, 20 mL sachet, 25 pcs
HI7061M General cleaning solution, 230 mL bottle
HI7061L General cleaning solution, 500 mL bottle
HI7073M Protein cleaning solution, 230 mL bottle
HI7073L Protein cleaning solution, 500 mL bottle
HI7074M Inorganic cleaning solution, 230 mL bottle
HI7074L Inorganic cleaning solution, 500 mL bottle
HI7077M Oil & Fat cleaning solution, 230 mL bottle
HI7077L Oil & Fat cleaning solution, 500 mL bottle
REFILLING ELECTROLYTE SOLUTIONS
HI7071 3.5M KCl + AgCl electrolyte, 4 x 30 mL, for
single junction electrodes
HI7072 1M KNO3electrolyte, 4 x 30 mL

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ACCESSORIES
HI7082 3.5M KCl electrolyte, 4 x 30 mL, for double
junction electrodes
ORP SOLUTIONS
HI7020M Test solution, 200‑275 mV, 230 mL bottle
HI7020L Test solution, 200‑275 mV, 500 mL bottle
HI7091L Reducing pretreatment solution
HI7092M Oxidizing pretreatment solution, 230 mL bottle
HI7092L Oxidizing pretreatment solution, 500 mL bottle
pH ELECTRODES
HI1043B Glass body, double junction, refillable, com‑
bination pH electrode. Use: strong acid/alkali.
HI1053B Glass body, triple ceramic, conic shape,
refillable, combination pH electrode.
Use: emulsions.
HI1083B Glass body, micro bulb, Viscolene, non‑re‑
fillable, combination pH electrode. Use:
biotechnology, micro titration.
HI1131B Glass body, double junction, refillable, com‑
bination pH electrode. Use: general purpose.
HI1330B Glass body, single junction, refillable, combi‑
nation pH electrode. Use: laboratory.
HI1331B Glass body, semimicro, single junction,
refillable, combination pH electrode. Use:
flasks.
HI1230B Plastic body, double junction, gel‑filled, com‑
bination pH electrode. Use: general purpose.
HI2031B Glass body, conic, refillable, combination pH
electrode. Use: semisolid products.
HI1332B Plastic body, double junction, refillable, com‑
bination pH electrode. Use: general purpose.
FC100B PVDF body, double junction, refillable, com‑
bination pH electrode. Use: food industry,
general.