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What is a 4-20 mA current loop?
The 4-20 mA current loop has been the standard for signal transmission and electronic control in control systems since the 1950's. The 4 mA to 20 mA current loop is a common method of transmitting sensor information in many industrial process monitoring...
Convert 4-20 mA to 0-10 V using a resistor
All iSMA Universal Inputs cannot read a 4-20mA signal directly, so to read a 4-20mA sensor you will find in the box of every iSMA device (with Universal Inputs) a set of 200 Ohm resistors. It is extremely simple to measure 0-20 mA analog signal from a sensor with a...