10-13-2006 05:32 PM
I am trying to understand the internal nature of the FP-RTD-122 3-wire module. My application consists of using several RTD's in series, and I am trying to adapt this module for the application. I need to understand information of how the module pulses a current from channel to channel, internal impedance, and related information to see if this is a feasible approach.
10-16-2006 06:56 PM
10-16-2006 07:09 PM
10-17-2006 09:54 AM
Due to the limited number of connectors into my system, I thought that I could wire multiple RTD's (resisters) in series. I would allow the one channel to pulse the current and the remainder channels to accurately read the voltage across each RTD (resister). This would eliminate a lead wire per RTD allowing me to have more RTD's with a limited number of connectors without compromising to a two wire RTD. I don't know if this is possible, but if I could obtain a wiring schematic or talk to someone who knows how the module operates internally I would determine if that is an approach worth taking.