Why we use 4 ~ 20mA or 3 ~ 15 PSI Standard Signal?
C Carl_E Dec 29, 2015 #2 >Why we use 4 ~ 20mA or 3 ~ 15 PSI Standard Signal? 3-15 psi: http://www.allinterview.com/showanswers/181560/why-we-use-3-15-psi-air-for-control-valve-input.html 4-20mA: http://control.com/thread/1274385621#1274385621
>Why we use 4 ~ 20mA or 3 ~ 15 PSI Standard Signal? 3-15 psi: http://www.allinterview.com/showanswers/181560/why-we-use-3-15-psi-air-for-control-valve-input.html 4-20mA: http://control.com/thread/1274385621#1274385621
