JUMO dTRANS pH 02, Operating Manual, Page: 71 / 136

71
11 Calibrating a sensor with a standard signal
11.1.2 Calibration options
Different calibration options are available depending on the operating mode.
- With one-point (offset) calibration, the zero point of the sensor is
calibrated.
- With two-point calibration, the zero point and slope of the sensor are
calibrated. This is the recommended calibration for most sensors.
- With one-point final value calibration, the slope of the sensor
is calibrated. This is the recommended calibration for chlorine sensors, for
example.
- Calibration of relative cell constant
With conductivity sensors only.
- Calibration of the temperature coefficient
With conductivity sensors only.
11.1.3 Ways to start the calibration
Select the input to which the sensor is connected.
If Calibration level is not released
Press the key for longer than 3 seconds/ADMINISTR. LEVEL/PASSWORD/
CALIBR. LEVEL/OPTIONAL INPUT.
If Calibration level is released
Press the and keys simultaneously/OPTION INPUT.
If Calibration level is released
Press the key for longer than 3 seconds/CALIBR. LEVEL/OPTION INPUT.
Operating mode Calibration options Page
1-point 2-point Limit point Rel.
cell const.
Temp.
coeffic.
Linear X X X - - 72
pH
a
X X - - - 77
Conductivity - - - X X 78
Concentration - - - X 84
Customer specs. Due to the table with interpolation points, no calibration is required
Chlorine,
pH-compensated - - X - - 86
a
When configuring the device: the parameter "zero point" for the operating mode "pH" of the respective
optional board has to be set – one time – to value "7".
PGM
PGM
PGM