Input type: Analog
Output type: Analog
Signal shaper type: Passive isolator
Input range: 0 to 20 mA, 4 to 20 mA
Output range: 0 to 20 mA
Mounting type: DIN rail
Sensor compatibility: Transmitter
Operating temperature min: -25°C
Operating temperature max: +70°C
Special features: No additional supply voltage required

The 857 series isolation amplifiers from Wago provide conversion, amplification, filtering, and electrical isolation of standard analog signals. Features include a limiting function that restricts standard analog signals to upper range values, switching of calibrated scale, a PC configuration interface, and safe 3-pole isolation with a 4 kV test voltage according to EN 61140.