WIKA Operating Instructions Level Transmitter
– BLM-SF-FM
19
4.2.2.8 Selection of the multidrop mode
The multidrop mode of the transmitter can be selected independently from
the unique address. When activated, the loop current of the transmitter is
fixed to 4 mA.
Access:
Setup -> HART -> Multidrop
Possible Values:
On, Off (Standard value: Off)
4.2.2.9 Selection of the multidrop mode
The measurement values of the sensor can be damped exponentially.
Therefore, the time constant of the damping can be adjusted.
Access:
Setup -> HART -> Prim Var -> Damping
Possible Values:
0 … 999.9 s (standard value 0.0 s).
Example:
Waves in the tank should be suppressed.
By statistical analysis, a damping constant of 5 s is
calculated. The setting is applied by Setup -> HART
-> Damping -> Level -
> τ = 5 s.
Result:
The transmitter shows 64 % of the actual
measurement value after 5 seconds.
