4-20 ma to Fiber

The simple answer is that there isn't one, but what exactly are you trying to do?

You would need to connect some form of A/D Converter in the field to convert the 4-20mA signal to a digital signal and then send this across the fibre. This is usually in the form of a Remote I/O module or RTU connected over the fibre to your control system.

Cameron:-)

I've seen this company's solution on an oil rig I worked on (commissioning).

Cheers

Thanks Tom - It is exactly what I need!

(commissioning).

RJB, Yes there is. Please follow the link

Hey Raj,

I had a quick look at the link below. Looks to me that the black box described is used to convert electrical serial data (digital) to and from fiber for long runs. Apart from good old rs-232, some ancient systems used a five bit code sent over a current loop (not 4 - 20)

RJB was looking to send an analogue 4 - 20 mA signal over fiber.

Cheers, Tom