Input: Current = 0 ... 20mA , 4 ... 20mA or Voltage = 0 ... 10V 3 port Galvanic Isolation Isolation test voltage up to 2.5kV Working voltage up to 300V AC/DC Universal power supply 20...253 V AC/DC.
The A 21000 isolates, transmits and converts 0 ... 20 / 4 ... 20 mA and 0 ... 10 V standard signals with a high level of accuracy. In spite of its modular housing being only 6 mm wide, the new VariTrans® isolation amplifier provides maximum protection of personnel and equipment by protective separation up to a working voltage of 300 V conforming to EN 61140. Test voltage is 2.5 kV AC.
Very small coupling capacitances ensure that high transient common-mode interferences can be reliably isolated and cannot lead to system malfunctions.
Maximum flexibility is provided by the integrated broad-range power supply for 24 … 110 V DC / 110 … 230 V AC. This ensures trouble-free operation with alternating or direct voltages everywhere in the world even in unstable power supply networks. Erroneous connection of mains supply is practically impossible. Expensive standstill times and repair work during the commissioning are prevented.
VariTrans® A 21000 sets the measuring ranges via DIP switches – comfortably and unmistakably. Calibrated range selection ensures a gain accuracy of 0.2 (0.3) %. Tedious on-site adjustment using a screwdriver, calibrator or multimeter is therefore no longer required – it couldn't be safer or easier!
The 3-port isolation offers diverse application possibilities. The input and output circuits can be applied to any potentials, taking account of the permitted working voltages. The distinction between input and output isolation amplifier is not required with the VariTrans® A 21000 because all 3 electric circuits are galvanically isolated from each other.