ProMinent DULCOMETER Assembly And Operating Instructions Manual page 108

Electrical data
The mA output is galvanically isolated from all other connections (500 V)
Pump control (f-relay)
Max. switching voltage:
Max. switching current:
Max. residual current (open):
Max. resistance (closed):
Max. switching frequency (HW) at 50 %
filling factor
Digital output galvanically isolated from all other connections by OptoMos relay.
108
50 V (protective low voltage)
50 mA
10 mA
60 W
100 Hz