Hanna Instruments hi 8314 用户手册
OPERATIONAL GUIDE
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.
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.
CE DECLARATION OF CONFORMITY
ISTR8314 01/02
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.
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 sub-
merge 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 tem-
perature 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.
merge 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 tem-
perature 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.
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.
and allow the reading to stabilize.
°C
For greatest accuracy, frequent calibration of the instrument is
recommended. The instrument should be recalibrated for pH:
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.
b) At least once a month.
c) After testing aggressive chemicals.
d) Where extreme accuracy is required.
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.
(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
• 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.
a pH7.01 buffer solution; stir gently and wait a couple of
minutes for thermal equilibrium to be reached.
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
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.
pH CALIBRATION
• Rinse and immerse the pH electrode in pH4.01 or pH10.01
buffer (2
nd
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.
pH value at the noted temperature.
The pH calibration is now complete.
pH
OFFSET
pH
SLOPE
pH
BATTERY REPLACEMENT
When the battery becomes weak, the
meter displays a blinking additional deci-
mal 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 atten-
tion to its polarity.
Replacement must only take place in a non-hazardous area
using an alkaline 9V battery.
meter displays a blinking additional deci-
mal 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 atten-
tion to its polarity.
Replacement must only take place in a non-hazardous area
using an alkaline 9V battery.
ACCESSORIES
HI 1217D
amplified, combination pH-electrode with built-
in temperature sensor and DIN connector
in temperature sensor and DIN connector
HI 3618D
amplified, combination, Platinum ORP-electrode
with built-in temperature sensor and DIN con-
nector
with built-in temperature sensor and DIN con-
nector
HI 4619D
amplified, combination, Gold ORP-electrode with
built-in temperature sensor and DIN connector
built-in temperature sensor and DIN connector
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
°C
ºC
TEMP pH VALUES
°C 4.01 7.01 10.01
0
5
5
10
15
20
25
30
35
40
45
50
55
60
65
70
15
20
25
30
35
40
45
50
55
60
65
70
4.01
4.00
4.00
4.00
4.00
4.01
4.02
4.03
4.04
4.05
4.06
4.07
4.09
4.11
4.12
4.00
4.00
4.00
4.00
4.01
4.02
4.03
4.04
4.05
4.06
4.07
4.09
4.11
4.12
7.13
7.10
7.07
7.04
7.03
7.01
7.00
6.99
6.98
6.98
6.98
6.98
6.98
6.99
6.99
7.10
7.07
7.04
7.03
7.01
7.00
6.99
6.98
6.98
6.98
6.98
6.98
6.99
6.99
10.32
10.24
10.18
10.12
10.06
10.01
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
9.92
9.88
9.85
9.82
9.79
9.77
9.76
9.75
pH VALUES AT
VARIOUS TEMPERATURES