ATRVM237+VM238隔离开关

The snap-on modules VM237 + VM238 are precision summation amplifiers with voltage or current output (10V/20mA).
Three negating and two non-negating inputs which can also be used as differential inputs, are at disposal. If the solder support points from „R26“ to „R29“ are equipped with a burden resistor (e.g. 100?), the corresponding inputs are operating as a current input.

Adjustment of amplification is made via a 20-pitch helical trimmer „V“ in the front panel. A coarse change of the amplification range can be easily achieved by replacing a resistor „R11“ located on solder support points.

The devices have a galvanic separated wide-range power supply, that allows a connection at all usual ac and dc supply voltages (19Vdc...255Vac). They can be snap-on mounted onto support rails TS35.