MemoTrans
17
pH:
Temp. compensation
Selection
• Off
• Automatic
• Manual
Factory setting
Automatic
Decide how you want to compensate the medium temperature:
• Automatically using the temperature sensor of your sensor
(ATC)
• Manually by entering the medium temperature
• Not at all
Medium comp.
Selection
• Off
• Two-point calibration
Factory setting
Off
Take a sample from the medium and determine its pH value at
different temperatures in the lab.
Offset
-18.00
…
18.00 pH
-100
…
100 mg/l
Factory setting
0.00 pH
0.00 mg/l
The offset compensates for a difference between a laboratory
measurement and an online measurement which is caused by
interference ions. Enter this value manually. If you are using a
compensation electrode, keep the offset at zero.
Internal buffer
pH 0
…
14
Factory setting
pH 7.00
Only change the value if you are using a sensor with an internal
buffer other than pH 7.
Oxygen:
Medium pressure
Selection
• Process pressure
• Air pressure
• Altitude
Factory setting
Air pressure
Press Measured value to connect a pressure measured value via a
fieldbus input or a current input. This measured value is then
used for medium pressure compensation.
For the other types of compensation, specify a compensation
value for the measurement in each case.
• Specify either the altitude (‑300
…
4000 m), the process
pressure (500
…
9999 hPa), or the air pressure (500
…
1200 hPa)
of the measuring point.
The pressure used during the calibration is also displayed for
information purposes. You can change this pressure in:
Calibration settings
Ambient conditions
Medium pressure
Salinity
Selection
• Fixed value
• Measured value
Factory setting
Fixed value (0.0 g/kg)
Diagnostic settings
Sensor diagnostic settings
