16
WIKA Operating Instructions Level Transmitter
– BLM-SF-FM
4.2.2.4 Setting of the alarm current
The current of the analogue output in case of sensor failure can be select-
ed. The alarm current is set, if the sensor detects no float or the electron-
ics detects a critical failure.
Access:
Setup -> 4-20 mA -> Alarm
Possible settings are:
Setting
Description
High (21 mA)
Switches current in case of error to >21 mA.(*) standard setting
Low (3.6 mA)
Switches current in case of error to <3.6 mA. **)
Hold
Hold the last valid current value.
**) Avail.: Available since version 8.32
See also: HART-Command 131. (since Version 8.32)
4.2.2.5 Using of the current simulation mode
The transmitter allows simulation of an user-defined current value. Hereby,
external switching functions or the cabling can be tested.
If small deviations of the measured current value from the set current val-
ue are existent, these can be corrected by means of the DAC calibration
function (see below).
Access:
Setup -> 4-20 mA -> DAC -> Simulation
Possible values:
3.8 … 20.5 mA
See also:
HART command 40.
Avail.:
Available since version 8.3.
