RFI Protection, Input Isolation

Current, Voltage, T/C & RTD Input Versions available

Up to 2kV Isolation Available

High Noise Immunity

High Accuracy, Low Cost

Powered from Input or Output

The 420i Series of loop powered isolators are direct current isolators. The isolator derives its power from the 4-20mA input signal and therefore requires no external power supply. The output of the isolator can be connected to any potential within 1kV of the input negative terminal while transients of 2.5kV can be withstood. An option exists to increase the isolation to 2kV. Two variants are available which can provide a 1-5V or a 0-10V output.

The 420-TW Series of isolating terminal blocks can replace standard DIN-rail terminals to provide input isolation, signal conversion and excellent RFI and noise rejection. The units are powered from the output side making them ideal for plc and data acquisition applications. Inputs available include thermocouple, RTD, current and voltage and the standard output is 4-20mA.

The 420-DIG family consist of 2 digital modules which will allow the isolation of digital inputs and outputs.

The 420-OEM unit is a very small pcb mounting 4-20mA isolator which is ideal for OEM applications.