MemoTrans
19
Function
Options
Info
Oxygen:
Stability criteria
Delta signal
0.1
…
2.0%
Factory setting
0.2 %
Permitted measured value fluctuation during
calibration.
Referenced to the raw value in nA in the case of
amperometric sensors.
Delta temperature
0.10
…
2.00 K
Factory setting
0.50 K
Permitted thermal fluctuation during calibration.
Duration
5
…
60 s
Factory setting
20 s
Timeframe within which the permitted measured value
variation may not be exceeded
Ambient conditions
Medium pressure
Selection
• Process pressure
• Air pressure
• Altitude
• As during measurement
(measured value)
Factory setting
Air pressure 1013 bar
Process pressure
Medium pressure =
process pressure
500
…
1200 hPa
Factory setting
1013 hPa
Enter the altitude or the average air pressure of the
place of calibration (mutually dependent values).
If you specify the altitude, the average air pressure is
calculated from the barometric altitude formula and
vice versa.
If you are compensating using the process pressure,
enter the pressure in your calibration medium here.
The pressure is then independent of the altitude.
Air pressure
Medium pressure =
air pressure
500
…
1200 hPa
Factory setting
1013 hPa
Altitude
Medium pressure =
altitude
-300
…
4000 m
Factory setting
0 m
Rel. hum. (air variable)
0
…
100 %
Calibration monitoring
(calibration timer)
Function
Selection
• Off (during operation,
during sensor connection)
Factory setting
Off
Calibration check:
calibration validity
The function checks whether the calibration of a sensor
is still valid. Example: You install a precalibrated sensor.
The function checks how long ago the sensor was last
calibrated. A diagnostics message is displayed if the
time since the last calibration is longer than specified
by the predefined warning and alarm limit.