The Conax Model DRT2-RTD and DRT4-RTD are compact, DIN rail mounted transmitters for 2, 3, and 4 wire RTD sensors. The output is linear with respect to the sensor’s temperature. The 4-wire input circuitry provides near perfect compensation for the effect of long leadwire resistance.
The units are powered by standard industrial loop power supply and provide a 4-20mA output on a 2-wire transmitter system (DRT2-RTD) or any standard current or voltage output on a 4-wire system (DRT4-RTD).

 

Specifications
Input	Pt-100, 2, 3, or 4-wire RTD. Other Pt, Ni, NiFe, Cu RTDs, available
Input Temp Range	-200ºC (-328ºF) to +850ºC (1562ºF)
Input Span	20ºC Min. to 800ºC Max.
Output (DRT2-RTD) 2-Wire (DRT4-RTD) 4-Wire	Current loop 4-20mA 0...1...4...20mA 0...1...2...6...10V
Linearity	Better than 0.1%, referred to the sensor’s actual temperature
Lead Wire Error (4-Wire)                       (3-Wire)	Negligible, for 4-Wire sensors Better than 100:1 compensation
Temperature Stability	<±0.01% of range/ºF (100ºC SPAN)
Power Supply Range	24 VDC ±20%, polarity protected
Adjustments	±25% on both ZERO and SPAN
Operating Temperature	-20ºC to 70ºC (0ºF to 160ºF)
Mounting	DIN rail 35 mm
Accuracy	0.1% of SPAN typical