0-5volt to 4-20ma converter

if you have siemens plc system u select input module 0-5 volt analog voltage i.put selection and get the calculated value in words to get exit from 4-20 mA analog out module.

other vise you need real convertor of V - mA.check in internet lot of different sourse are available to buy...
thank you sir...

i am sankaranarayanan..
Mumbai.
[email protected]
 
I
You are kidding right? i mean, use a resistance for god sake, how do you convert voltage to current? that's electronics basic.

good luck.
 
Well, a resistor will work when going from 4-20 ma to 1-5 volts. But it won't necessarily work going the other way. Current loop transmitters are designed to drive a load that can vary from application to application, from 50 ohms to 750 ohms, typically. A current transmitter is able to compensate for the addition or deletion of a loop instrument by using more or less power to drive the loop. A fixed-size resistor could not do this and voltage sources are not designed to power current loops. Voltage sources expect a high impedance measurement device to be attached.
 
D
That will give them 0-20 ma not 4-20ma. Look at converters from someone like Weidmuller or Phoenix Contact.
 
Hello,

If you can't make it in basic way like using resistors, you can provide signal conditioners on the market with several input signals as your (4-20mA) output signal. Like we've done on my previous project with several analog signals to convert.

We have been using these, try this:

http://www.m-system.com
 
Top