21
4.6
Analog output 2
Submenu
4.6.1 Calibration 4 mA
Selection:
Key functions can be used to set the
Setting the output current current and equalise it to the receiver side
4.6.2 Calibration 20 mA
Selection:
Key functions can be used to set the
Setting the output current current and equalise it to the receiver side
4.7
Analog output 3
Submenu
4.7.1 Calibration 4 mA
Selection:
Key functions can be used to set the
Setting the output current current and equalise it to the receiver side
4.7.2 Calibration 20 mA
Selection:
Key functions can be used to set the
Setting the output current current and equalise it to the receiver side
The current output can be calibrated so that the zero point (output of 4 mA) is set to the
background noise of the measuring point. If the background noise decreases due to process
changes, sensor wear or other ageing effects, a signal of less than 4 mA can be output at the
analog output. In this way, a zero offset can be detected (zero point drift).
If this function is not desired for process engineering reasons, the zero point must be specified
for the calibration to a raw value of zero and/or the
4.1 MIN limit
set to 4 mA.
If the settings of the 4 mA or 20 mA signal are changed, the checkbox
Overwrite calibration
must be set. If the checkbox is set the changed parameters can be sent to the Evaluation unit by
clicking on
Device program
.