MRC INE-PHS-3E Operating Manual
INE-PHS-3E pH Meter
Operating Manual
PLEASE READ THIS MANUAL CAREFULLY BEFORE
OPERATION
Hagavish st. Israel 58817 Tel: 972 3 5595252, Fax: 972 3 5594529 mrc@mrclab.com
MRC.12.16
INE-PHS-3E 2016
ADVICE:
z Read this instruction carefully before operating the meter.
z The meter should be re-tested by metrological department when it is used
for over one year. The meter can't be used until it is up to standard.
z The warranty of the glass PH electrode is one year. The electrode should be
replaced in time after one year no matter whether it is used or not, since the
performance of it will be influenced.
z When pH electrode is used for the first time, or if pH electrode is not used for
a long time, it must be immerged in 3mol/L (KCl) solution for 24 hours before
operating.
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INE-PHS-3E 2016
CONTENT
1. GENERAL
2. MAIN SPECIFICATIONS AND PERFORMANCE
3. CONSTRUCTION
4. OPERATION INSTRUCTION
5. MAINTENANCE
6. CAUTIONS FOR ELECTRODE OPERATING
7. COMMON PROBLEMS AND SOLVING
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INE-PHS-3E 2016
1. General
INE-PHS-3E pH meter is a precise digital display pH meter, which adopts double digits
LCD display with a big screen and blue back light. It displays PH value and temperature
value or mV value and temperature value simultaneously. It is suited for measuring pH
value and potential (mV) of water solution in laboratories of universities, institutions and
enterprise. Besides, it can also be used to measure electrode potential with various
ion-selected electrode and measure oxy-reduction potential (ORP) value with ORP
electrode.
2. MAIN SPECIFICATIONS AND PERFORMANCE
2.1 Range
pH mV Temp.
Measuring range (0~14.00)pH
displaying range:
-2.00~18.00pH
Resolution 0.01pH 1mV 0.1
Temp. compensation (0~99.9)
(0~±1999)mV
automatic polar display
(0-99.9)
2.2 Accuracy
pH mV Temp.
Electronic unit ±0.01pH±1bit ±1mV ±1 bit ±0.3±1 bit
The meter ±0.02pH±1bit ±0.5±1 bit
Temp. compensation ±0.01pH±1 bit
Repetitive of the electronic
units
Repetitive of the meter 0.01pH
Stability of the electronic unit ±0.01pH ±1bit/3h
2.3 Electronic input current: 2x10
2.4 Electronic input impedance: 1x10
2.5 External dimensions Lxbxh, mm 300x200x72
2.6 Weight: 1.5kg
2.7 Normal operating conditions:
a) Ambient temperature: (5~40)
b)Relative humidity: 85%
c)Power supply: AC: 220V, Frequency: 50Hz
d) No strong electromagnetic interference to surrounding except the geomagnetic field
0.01pH 1mV
-12
A
12
ȍ
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INE-PHS-3E 2016
3. CONSTRUCTION
Front panel of the meter
Case cover
1.
*1- Multi-function electrode support
stand rack (it has been set up under
bottom of the meter)
2. keyboard
3. Screen 5. Electrode
4. Multi-function electrode support stand
Back panel of the meter
6.
Measuring electrode socket
7. Reference electrode terminal
9. Temperature electrode socket
10. Fuse
11. Power switch
12. Power socket
Descriptions of keyboard
4
3
1
5
2
6 7 9 10 11 12
Keyboard Function
“pH/mV” button Press this button to select mV measuring, pH measuring,
“Std” button
“Slope” button
“ENTER” button
“Ÿ” button
"ź" button
For calibration, slope adjusting function
Press this button to confirm the last one operation and then to the next state.
The other function of the button is in case of mistaken operation in the course
of calibration, users may switch off the meter, then hold “ENTER” button,
switch on the meter again, the meter will be in the state of beginning.
This button is a increasing value key. Press the button to adjust the value
larger. Press the button to adjust the temperature value larger manually at the
pH measurement state; Press the button to adjust the calibration,slope pH
value larger manually at the calibration,slope adjusting state.
This button is a reducing value key. Press the button to adjust the value
smaller. Press the button to adjust the temperature value smaller manually at
the pH measurement state; Press the button to adjust the calibration,slope pH
value smaller manually at the calibration,slope adjusting state.
Descriptions of LCD display
-18.88—Displaying pH measurement and mV measurement value
88.8 — Displaying temperature value. If the ATC probe connected to the meter, the
displayed temperature value is the automatic measuring temperature, i.e. the
temperature of measured solution; if the ATC probe is not connected to the meter,
the meter will display temperature value which is set by manual.. Press this button
to set temperature value larger or smaller at the pH measurement state and then
press “ENTER” button to confirm the temperature value selected.
PHmV—Being pH and mV measurement value unit
—Being temperature unit. The light is flashing, the meter enters adjusting temperature
state manually.
Calibration/slope/measurementʊDisplaying corresponding working state.
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INE-PHS-3E 2016
INE-PHS-3E
Operating flow diagram
Switch on the meter
Enter manual or auto. temp. measurement selection
mV measurement
Press “pH/mV” button
pH measurement
Press “Std” button
Enter calibration state
Press “Slope” button
Enter slope adjusting state
Press “pH/mV” button
If the temperature electrode is not
connected to the meter, enter manual
adjusting temp. state. Press “Ÿ” or
“ź” button to adjust temp. larger or
smaller manually, and then press
“ENTER” button to confirm the temp.
selected.
Enter
(auto. Calibration
adjusting)
Enter
(auto. slope
adjusting)
Press “Ÿ” or “ź” button
to adjust calibration value
manually
Press “Ÿ” or “ź” button to
adjust slope calibration
value manually
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