250 Ohm to Convert 4-20mA to 1 -5 V

We have dedicated modules for converting 4-20mA to 0-5V or 0-10V. They provide isolation. They provide calibration for zero / span etc

In comparison if I just use a 250Ohm precision resistor in the current loop I can get 1-5V. Ok I need to offset the 1 V and there is no isolation.

Apart from these any other issue with the simple method of conversion ??

Buy a decent DD-DC module rated for your maximum needs. Put solenoids and stepper-motors on separate DC supply.

An alternative for bigger projects:
How to Build a Power Supply for Electronics Hobby : 3 Steps (with Pictures) - Instructables

Taking your question literally, the answer would be "no other issues". But as you haven't shared details of your case, there is a definite chance of some unexpected issue.

A resistor makes a pretty good "current to voltage converter".

Real questions would be like, "can you safely get away with no isolation?".

It depends. What is the compliance of the current source?
Is it carrying an analog value, or just binary?
What will you do with the "0-5V" signal?

Maybe you’re looking for something like this? Simple and offers some protection. Do bear in mind that your computer is not isolated either. The beauty of current-loops is that wire resistance doesn’t matter, transmitters usually work with circuit resistances up to 500 or 750 Ohms.
4-20mA

Do yourself one favor, though. Do not ever under any circumstances cause your 250 ohm resistor to go open circuit (for example, unscrew a wire) when the sensor power is applied, because if you do, you apply that sensor 24V to the Arduino, and poof, there goes an analog input, and quite possibly your processor... It's the one downfall of the current loop design.

Thanks to all those who responded with valuable tips and traps !

The points regarding isolation and accidental open circuiting are well noted.
And just for the records, in this particular case the converted 1-5V will be fed to a Labjack data logger. This runs of the USB port of a PC and the required excitation for the 15V for the 2-wire pressure sensor is generated from the USB 5V with a boost circuit. ( Of course will try to keep the maximum draw from the USB port well under 500mA ... if this is not possible then an external PS will need to kick in and then of course isolation becomes an issue )

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