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