Trying to convert the signal from a AD590 to go into a PLC 4..20mA or 0..10V.
I've come from the PLC side where everything is in mA or V, and the sensors used have a large install base, and changing the sensors over and cable will cost some serious man hours. Need to install a PLC and wire current sensors into them.

These temperature sensors
- Linear current output: 1 μA/K
- 298.2 μA output at 298.2 K (25°C)

Sensors are installed in cool rooms, so temp range will be -10 to 20 degrees.
263.2uA to 293.2uA. to 0..10v or 4..20mA

Googling and looking around this website puts me in the direction of Transimpedance amplifiers, but not sure where to go from there.
Will need to mass produce (several 100) of these, once we know what to use.

Thanks

 

If you look at the data sheet for the AD590, Fig. 21 on page 11 shows an example circuit for generating a 4-20 mA output signal.