Action Pak models AP4001 and AP4151 are useful in any application requiring a DC output from an RTD input. Typical applications include energy management and data acquisition of process temperatures. The output of a 4000 series RTD signal conditioner can drive a digital meter for direct display, or interface with a computer for monitoring and control.

The two models of RTD input signal conditioners provide the following input to output relationship
AP4001 Linear to resistance
AP4151 Linear to temperature