Why 4-20 mA Standard is so popular ?
4-20 mA Standard 4-20mA has an inherent ‘live zero’. Zero engineering units is 4.0mA, not 0.0mA. 0.0mA indicates an open
4-20 mA Standard 4-20mA has an inherent ‘live zero’. Zero engineering units is 4.0mA, not 0.0mA. 0.0mA indicates an open
The most popular form of signal transmission used in modern industrial instrumentation systems is the 4 to 20 mA current signal standard.