Window comparator + Schmitt trigger
Schmitt trigger function for fill level control
two measuring ranges, 0...10V and 0/4...20mA
threshold adjustment by 3 decade switches
three way separation
power supply 24Vdc
The unit KM42 functions as a window comparator with its output K1 and as a Schmitt trigger (level control) with its output K2. It is designed for the standard signals 0...10V and 0/4...20mA. DIP switch S5-1 must be closed to switch over the operating mode when using the current input.
The lower and upper limit values (1...99%) can each be set using two decade switches in the front of the unit. A reference is not required as the operating points can be read off directly from the decade switches.
Voltage/current measurement, hysteresis (only effective in the case of K1), operating delay and non-inverting/inverting operation of the relays are selected using easy-to-operate DIP switches (S5).