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System Components & Recorders / Loop Powered Isolator
420i Loop Powered Isolator
- Low Voltage drop
- High Accuracy, better than 0.1%
- 1kV Isolation
The 420i is typically used to provide an isolated 4-20mA current loop from any existing 4-20mA loop. This isolated 4-20mA can then be connected to any input stage without affecting other signals connected to the same earth. The output can be connected to any potential within 1kV of the input negative terminal while transients of 2.5kV can be withstood.
Another typical application is to use the 420i to enable two instruments to monitor the same 4-20mA at the same time. The 420i is wired in series with the input of the first instrument and then the output wired to the second.
The 420i also acts as a noise reduction device, giving a 'clean' 4-20mA output.
420TWHL Loop Powered Isolator
Isolating Terminal Block
- 2-wire Isolating Signal Converter
- Voltage or mA inputs
- Thermocouple & RTD Versions available
- Low Cost, Compact Solution
Powered from the output side the 420TWHL isolates the incoming signal and provides a clean 4-20mA signal output. Inputs for the HL version include 4-20mA, 0-10V and other mA and voltage levels.
The units are typically used in place of standard DIN rail terminals to provide isolated and clean 4-20mA signals to PLC inputs and other input cards.
For thermocouple and RTD inputs please use the 420TWTC and 420TWRTD versions.
420TWRTD Loop Powered isolator
Isolating Terminal Block
- 2-wire Isolating Signal Converter
- PT100 2 wire or 3 wire input
- Thermocouple Version available
- Low Cost, Compact Solution
- Optional High/Low Burnout
Powered from the output side the 420TWHL isolates the incoming signal and provides a clean 4-20mA signal output. Inputs for the RTD version include 2 or 3 wire PT100 sensors with almost any temperature range.
The units are typically used in place of standard DIN rail terminals to provide isolated and clean 4-20mA signals to PLC inputs and other input cards.
For mA,Voltage and TC inputs please use the 420TWHL and 420TWTC versions.
420TWTC Loop Powered Isolator
Isolating Terminal Block
- 2-wire Isolating Signal Converter
- Thermocouple or mV inputs
- RTD Version available
- Low Cost, Compact Solution
- Optional Cold Junction Compensation
Powered from the output side the 420TWHL isolates the incoming signal and provides a clean 4-20mA signal output. Inputs for theTC version include most thermocouple and mV inputs.
The units are typically used in place of standard DIN rail terminals to provide isolated and clean 4-20mA signals to PLC inputs and other input cards.
For mA,Voltage and RTD inputs please use the 420TWHL and 420TWRTD versions.
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