SATO KEIRYOKI 6400-00, Instruction Manual

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9
Note: The table below shows the pH value range to be entered for calibration.
Calibration point pH value range
pH 4 3.50 to 4.50
pH 7 6.50 to 7.50
pH 10 9.50 to 10.50
Note that it is not possible to perform calibration using the oxalate standard solution
(pH 1.68 at 25°C) or borate standard solution (pH 9.18 at 25°C)
CAL key REC key REC Key REC Key
Measurement mode Calibration pH4 Calibration pH7 Calibration pH10
Calibration mode
Auto-return (after three seconds)
Note: The set temperature values are not displayed if an error code (E1 or E2) is displayed in the pH display
section (mV display). Once the error code is reset or the unit is turned off and on again, the set
temperature value will be displayed. For details of the error codes, refer to "Troubleshooting".
Relation between pH value and temperature
When performing calibration, set the pH value according to the temperature of the standard solution as
follows;
Standard solution Name of solution Temp. pH value Temp. pH value
pH 4
Phthalate solution
0
℃
4.00 30
℃
4.02
5
℃
4.00 35
℃
4.02
10
℃
4.00 40
℃
4.04
15
℃
4.00 45
℃
4.05
20
℃
4.00 50
℃
4.06
25
℃
4.01 - -
pH 7
Neutral
phosphate solution
0
℃
6.98 30
℃
6.85
5
℃
6.95 35
℃
6.84
10
℃
6.92 40
℃
6.84
15
℃
6.90 45
℃
6.83
20
℃
6.88 50
℃
6.83
25
℃
6.86 - -
pH 10 Carbonate solution
0
℃
10.32 30
℃
9.97
5
℃
10.24 35
℃
9.92
10
℃
10.18 40
℃
9.89
15
℃
10.12 45
℃
9.86
20
℃
10.06
50
℃
9.83
25
℃
10.01 - -
JIS Z 8802-2011
Measuring procedure
(1) Connect the sensor probe to the main unit. When the PHP-31 sensor, which is capable of measuring both
pH and temperature, is used, connect both the BNC plug (pH) and the diode plug (temperature).