6 mm: Knick VariTrans®
Active standard-signal isolators and signal doublers
For galvanic isolation of 0 ...10 V, 0 ... 20 mA, or 4 … 20 mA standard signals. For preventing a mutual or external influence of measuring signals in a system. Predestined for the isolation of PLC input and output circuits. Transformation of signals if required – e.g. when a current signal from the field is to be connected to a PLC voltage input. When a live zero signal has to be transformed into a dead zero signal. Or when other standard signal combinations are required.

 

Overview of the advantages
- 3-port isolation of input against output against power supply
- Long service life thanks to low self-heating (MTBF: 440 years)
- Good accuracy: 0.2 %
- Calibrated switching of input and output signals
- Flexible adaptability enables cost-conscious stockkeeping of only one model
- Safe Isolation up to 300 V according to EN 61140
- 5-year warranty
- Thanks to the cross-connection comb, the power supply has to be wired only once; parallel channels are supplied via the snap-in comb


 

6 mm: Knick IsoTrans®
Passive standard-signal isolators
Loop-powered standard-signal isolators are a low-cost solution for isolating 0...20 mA or 4...20 mA signals. There is no expenditure for power supply units and their wiring.
The use of passive isolators is frequently limited by feedback from the output to the input. This limitation is eliminated with Bürdenstop® – the isolator is reactionless.

Overview of the advantages
- 1:1 transmission of 0 ... 20 mA or 4 … 20 mA signals
- One- or two-channel versions in 8-pin 6 mm housing enables an extremely high component density
   with up to 320 channels per meter of top hat rail
- Protection against incorrect measurements or damage to the measuring equipment due to parasitic voltages
- No feedback due to Bürdenstop®, i. e. an interrupted output does not affect the input current circuit
- Safe Isolation according to EN 61140 up to 300 V
- Maximum reliability prevents repair and failure costs
- Low-cost, technically clean signal isolation
- 5-year warranty


 

6 mm: Knick IsoAmp®
Repeater power supply with signal transformation
For galvanically isolated supply of 2-wire sensors and transmitters; if required available with adaptation of the output signal to different standard signal inputs of a controller.
Sensors fed through a current loop are frequently supplied from a PLC module or by a common power supply unit. Disadvantage: Galvanic isolation of the circuits from each other is not guaranteed – mutual influence must be expected. Because a falsified measurement signal involves incalculable risks for the operation of the system, galvanic isolation of the sensor circuits from each other is absolutely advisable. The new 6 mm repeater power supplies offer very economical solutions here.

Overview of the advantages
- Low-cost supply of 2-wire sensors and transmitters with 3-port isolation
- Flexible and fast configuration: adaptation of the output signal to free control inputs through convenient DIP switches on the device:
   calibrated output range selection: 4 ... 20 mA, 0 ... 20 mA, or 0 … 10 V
- Safe Isolation up to 300 V according to EN 61140
- Undisturbed communication with SMART transmitters according to HART® specification
- Thanks to the cross-connection comb, the power supply has to be wired only once; parallel channels are supplied via the snap-in comb
- 5-year warranty

For more information about the Knick Isolators from Elscolab call +31 342 426080 or click here