Transmitters convert a resistance input into a proportional analogue respectively digital output. Input, output and power supply are isolated from each other. Transmitters are especially for use with KSR level sensors. The set point relays monitor trip limits in measurements using current/voltage signals. These signals can be generated by transmitters. Set point relays can be configured using DIP switches and potentiometers.
Contact protection relays are used to switch higher currents. A binary switch connected to the control circuit on the input triggers the relay with a higher contact rating. This increases service life considerably. The output relay is voltage-free. Inputs are safely separated from outputs and supply voltage. Contact protection relays are temperature stabilised and guarantee reliable switching operation.
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