Hanna Instruments HI 8314 User Manual
Instruction Manual
HI 8314
Portable pH/mV/ºC meter
www.hannainst.com
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. 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 shipment costs prepaid. When shipping
any instrument, make sure it is properly packaged for complete protection.
All rights are reserved. Reproduction in whole or in part is prohibited
without the written consent of the copyright owner, Hanna Instruments Inc., Woonsocket, Rhode Island, 02895 , USA.
This Instrument is in
Compliance with the CE Directives
Dear Customer,
Thank you for choosing a Hanna product. This manual will
provide you with the necessary information for the correct
operation of the meter. Please read it carefully before using
the meter. If you need additional technical information, do
not hesitate to e-mail us at tech@hannainst.com.
This instrument is in compliance with the directives.
PRELIMINARY EXAMINATION
Remove the instrument from the packing material and
examine it carefully to make sure that no damage has
occurred during shipment. If there is any damage, notify
your Dealer.
Note: Conserve all packing material until the instrument
has been observed to function correctly. Any defective
item must be returned in its original packing.
GENERAL DESCRIPTION
HI 8314 is an hand-held 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.
Calibration procedure is very simple and adjustments are
easily made with two trimmers on the front panel.
The built-in temperature sensor in the pH electrode allows
automatic temperature compensation of pH readings.
Moreover HI 8314 has been designed with a low battery
detector feature and a lightweight ABS plastic housing.
The meter is supplied with HI 1217D, an amplified interchangeable plastic-body, combination, double-junction, gel
pH electrode with built-in temperature sensor, a 9V battery
and a calibration screwdriver are also icluded.
FUNCTIONAL DESCRIPTION
1) DIN connector for combination pH or ORP electrode.
2) LCD display.
3) mV key, 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) SLOPE trimmer for SLOPE calibration of pH.
6) °C key, to display the temperature measurement.
7) pH key, to display the pH value.
8) ON/OFF key.
SPECIFICATIONS
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 ±0.4
Typical EMC pH ±0.07
Deviation mV ±5
°C ±1
pH Calibration Manual, at 2 points 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
Electrode (*) HI 1217D amplified, combination,
double-junction, gel-filled pH-electrode
with built-in temperature sensor and
DIN connector (included)
Battery Type 1 x 9V alkaline
Battery Life 100 hours of continuous use
Environment 0 to 50°C (32 to 122°F);
max 95% RH non-condensing
Dimensions 164 x 76 x 45 mm
(6.5 x 3.0 x 1.8")
Weight 570 g (1.3 lb.)
(*) The max. operating temperature of the HI 1217D pH electrode is 80ºC.
To perform measurements at higher temperature use adequate electrodes.
DISPLAY CODE GUIDE
°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.
Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice.
OPERATIONAL GUIDE
pH
INITIAL PREPARATION
The meter is supplied complete with a 9V battery. Remove 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
in HI 70300 Storage Solution for half an hour to reactivate it.
Connect the pH electrode to the DIN connector on the top of
the instrument.
Turn the meter ON by pressing the ON/OFF key.
TAKING pH MEASUREMENTS
To take a pH measurement simply submerge the electrode tip (at least 4cm/
1½") into the sample to be tested.
Select the pH mode. Shake briefly and
wait a couple of minutes for the reading
to stabilize. The display will show the pH
value automatically compensated for temperature variations.
In order to take accurate pH measurements, make sure that
the instrument has been calibrated for pH before use.
If measurements are taken in different samples successively, it
is recommended to rinse the electrode thoroughly to avoid
cross-contamination. After cleaning, rinse the electrode with
some of the sample to be measured.
TAKING ORP MEASUREMENTS
Connect the ORP electrode to the DIN connector on the top of
the meter.
To enter the "mV" mode (ORP Oxidation
Reduction Potential) turn the instrument
ON and press the mV key.
To take the mV measurement of a sample submerge the ORP
electrode tip (at least 4 cm/1½") into the solution to be tested.
Wait a few minutes for the reading to stabilize.
TAKING TEMPERATURE MEASUREMENTS
Turn the instrument ON, press the °C key
and allow the reading to stabilize.
pH CALIBRATION
For greatest accuracy, frequent calibration of the instrument is
recommended. The instrument should be recalibrated for pH:
a) Whenever the pH electrode is replaced.
b) At least once a month.
c) After testing aggressive chemicals.
d) Where extreme accuracy is required.
• Rinse and immerse the pH electrode in pH4.01 or pH10.01
buffer (2nd calibration point) and stir gently.
• Wait a couple of minutes and adjust the SLOPE trimmer on
the lower right of the front panel until the LCD shows the
pH value at the noted temperature.
SLOPE
HI 1217D amplified, combination pH-electrode with built-
HI 3618D amplified, combination, Platinum ORP-electrode
HI 4619D amplified, combination, Gold ORP-electrode with
ACCESSORIES
in temperature sensor and DIN connector
with built-in temperature sensor and DIN connector
built-in temperature sensor and DIN connector
PREPARATION
Pour small quantities of pH7.01 (HI 7007) and pH4.01
(HI 7004) buffer 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. In this way contamination of the buffers is
minimized.
To obtain accurate readings, use pH7.01 (HI 7007) and
pH4.01 (HI 7004) buffers if you are going to measure acidic
samples, or pH7.01 (HI 7007) and pH10.01 (HI 7010) for
alkaline measurements.
If you need to calibrate the meter to NBS standards, use
pH6.86 (HI 7006) instead of pH7.01 and pH9.18 (HI 7009)
instead of pH10.01.
PROCEDURE
• Connect the pH electrode and switch the meter ON.
• Remove the protective cap from the electrode, rinse the tip
with some pH7.01 solution, then immerse the electrode into
a pH7.01 buffer solution; stir gently and wait a couple of
minutes for thermal equilibrium to be reached.
The pH calibration is now complete.
pH VALUES AT
VARIOUS TEMPERATURES
TEMP pH VALUES
°C 4.01 7.01 10.01
0
4.01
7.13
5
4.00
7.10
10
4.00
7.07
15
4.00
7.04
20
4.00
7.03
25
4.01
7.01
30
4.02
7.00
35
4.03
6.99
40
4.04
6.98
45
4.05
6.98
50
4.06
6.98
55
4.07
6.98
60
4.09
6.98
65
4.11
6.99
70
4.12
6.99
10.32
10.24
10.18
10.12
10.06
10.01
9.96
9.92
9.88
9.85
9.82
9.79
9.77
9.76
9.75
HI 7004M pH 4.01 Buffer Solution, 230 mL bottle
HI 7007M pH 7.01 Buffer Solution, 230 mL bottle
HI 7010M pH 10.01 Buffer Solution, 230 mL bottle
HI 70300M Storage Solution, 230 mL bottle
HI 7061M General Cleaning Solution, 230 mL bottle
HI 7082 3.5M KCl Electrolyte, 4 x 50 mL
HI 7091M Reducing Pretreatment Solution, 230 mL bottle
HI 7092M Oxidizing Pretreatment Solution, 230 mL bottle
HI 731326 Calibration screwdriver (20 pcs)
HI 76405 Electrode holder
CE DECLARATION OF CONFORMITY
Note: the electrode should be submerged approximately 4 cm
(1½") into the solution.
• Press the °C key to display the temperature of the buffer
(e.g. 20°C).
• Press the pH key to read pH values. Stir
°C
ºC
pH
gently and wait for a couple of minutes.
• Adjust the STD trimmer on the lower left of the front panel
until LCD shows the pH value at the noted temperature.
°C
OFFSET
pH
When the battery becomes weak, the
meter displays a blinking additional decimal point on the left side of the LCD.
When the low battery indicator appears only a few hours of
battery life is remaining. A low battery level may also result
in unreliable measurements. It is recommended to replace
the battery immediately.
Unscrew the 3 screws on the back of the meter, remove the
battery cover and replace the battery while paying attention to its polarity.
Replacement must only take place in a non-hazardous area
using an alkaline 9V battery.
BATTERY REPLACEMENT
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 area could cause
unacceptable interferences to radio and TV equipments, requiring the operator to take all
necessary steps to correct interferences. Any variation introduced by the user to the supplied
equipment may degrade the instruments' EMC performance. To avoid damages or burns, do
not perform any measurement in microwave ovens.
ISTR8314 01/02
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