Sensor with 4-20mA output
A sensor needs to be modified to work off a 24V DC supply and provide a
4-20mA output. How is this normally done? Is it okay if the 4-20mA output has a common connection with the power supply or should it be totally isolated. What is normally expected by typical control equipment? Someone must do this regularly. -- Brian Gregory. (In the UK) To email me remove the letter vee. |
Is it okay if the 4-20mA output has a common connection with the power
supply or should it be totally isolated. What is normally expected by typical control equipment? All versions seem to exist, but AFAIK delivering current towards ground is the most common (receiver is essentially a resistor to gound). Wouter van Ooijen -- ------------------------------------ http://www.voti.nl Webshop for PICs and other electronics http://www.voti.nl/hvu Teacher electronics and informatics |
In article , Brian Gregory [UK] wrote:
A sensor needs to be modified to work off a 24V DC supply and provide a 4-20mA output. How is this normally done? that depends on what the sensor needs to be modified from Is it okay if the 4-20mA output has a common connection with the power supply or should it be totally isolated. What is normally expected by typical control equipment? that depends... Bye. Jasen |
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