4-20 mA Current Sensor

Rey25 · Nov 1, 2010

Friends,

I have AC current sensor with approx. 1/2 Volt output. I am looking for a circuit to convert that to 4-20 mA "true RMS" signal. Where should I start?

Thanks
Rey

IanP · Nov 1, 2010

First is the RMS conversion to dc ..
Have a look at this:
https://www.analog.com/static/impor.../4115467695831699656014RMStoDC_Appendix-D.pdf
or google for similar circuits ..
Once you have dc voltage, converting it to 4-20mA is not a big problem ..
IanP
:wink:

pmar_kpj · Nov 1, 2010

hi !

xtr112 is 4-20mA Current Transmitters with Sensor Excitation and Linearization from Analog, Embedded Processing, Semiconductor Company, Texas Instruments

input range is : 5mV to 1V !

link : Sensors, Sensor Conditioning, 4-20mA Transmitter - 4-20mA Conditioning - XTR112 - TI.com

4-20 mA Current Sensor

Rey25

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IanP

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Rey25

pmar_kpj

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Rey25

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4-20 mA Current Sensor

Rey25

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