v_shortname: Frequency measuring transducer with limit values, device offers intrinsically safe circuits for device protection level: Ga , Gb , Gc , Da , Db , Dc , Ma , Mb, device offers intrinsically safe circuits for division: Div. 1 , Div. 2, Safety Integrity Level: SIL 2, Signal type: binary input, Number of channels: 1, Field side signal: frequency, Field side device: NAMUR sensor, potential-free contact, Control side signal: 0/4 ... 20 mA, Control side type: relay (changeover contact), transistor (passive), Transmission direction: to the control, Functions: start-up bridging, speed monitoring, error message output, frequency conversion, limit relay, pulse divider, line fault monitoring, Supply: 20 V ... 90 V DC/48 V ... 253 V AC, Supply connection: terminals, Connection type: screw terminals, Housing width: 40 mm, Ambient temperature: -20 ... 60 °C (-4 ... 140 °F)