Loop Isolator Input = 0(4) ... 20 mA Isolation test voltage up to 2.5kV Working voltage up to 500V AC/DC Surge withstand 5kV according to IEC 255-4 Power is supplied by input signal.
Knick IsoTrans® 41 DC transformers with transformer isolation have specifications well beyond other loop-powered DC isolators. 0.2 % accuracy and just 1.2 V intrinsic voltage drop allow diverse uses of this isolator.
The A2 modular housing with a width of 22.5 mm for max. 3 isolators offers optimum space usage in multichannel mode. The A3 modular housing for one isolator is just 17.5 mm wide.
The full encapsulation guarantees a high level of reliability even in extreme conditions.
The galvanic isolation in the IsoTrans® 41 is achieved by using a passive isolator that obtains its power from the measuring signal as a voltage drop. This saves on supply units and cabling and increases the reliability accordingly.
The units work with a serial chopper generator in the current path. This avoids the accuracy-reducing power losses of ordinary generators which are connected in parallel, reduces the voltage drop accordingly and also ensures accurate transmission of the smallest currents.