Power supplies & barriers Power supplies & barriers for sensors & transmitters RMA42 process indicator with control unit4-wire process indicator with control unit as DIN rail device with up to two universal sensor inputs and optional SIL approval RN22 active barrierActive barrier, 1/2-channel/SD for 4 to 20 mA, HART® transparent with 24 V DC as well as active/passive input and output, optionally with SIL and Ex RLN22 NAMUR isolating amplifierNAMUR isolating amplifier, 1/2-channel with 24 V DC and NAMUR or switching contact input as well as relay output, optionally with SIL and Ex RN42 active barrierActive barrier, 1 channel for 4 to 20 mA, HART® transparent with 24 to 230 V AC/DC as well as active/passive input and output, optionally with SIL and Ex RNB22 system power supply unitSystem power supply unit for parallel operation with 100 to 250 V AC input and 24 V DC 2.5 A output as well as static/dynamic boost RB223 passive barrierOne or two-channel barrier for the safe separation of 4...20 mA standard signal circuits RLN42 NAMUR isolating amplifierNAMUR isolating amplifier, 2-channel with 24 to 230 V AC/DC and NAMUR or switching contact input as well as relay output, optionally with SIL and Ex RNO22 output amplifierOutput amplifier, 1/2-channel for 4 to 20 mA, HART® transparent with 24 V DC and line fault detection, optionally with SIL and Ex