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DIN Rail RTD Input Signal Conditioner w/ 2 or 3 Wire Inputs

RTD Input Signal Conditioner

Item# DRF-RTD-115VAC-0/200C-4/20

RTD Input Signal Conditioner DRF-RTD-115VAC-0/200C-4/20 DRF-RTD-115VAC-0/200C-4/20
  • This product series has been discontinued. For possible replacements, please see DRSL-RTD , DR-i3P , or DRST-UN.
  • 100 Ω Platinum (Pt) RTD Element, 0.00385 Curve
  • 2 or 3 Wire Configuration
  • 0.2% Accuracy
  • Cable Resistance Compensation up to 10 Ω
  • Upscale Break Protection
  • Response Time < 250 mS
  • Galvanic Isolation Between Input, Output and Power

The DRF series DIN rail signal conditioners are designed to accept a broad range of input signals, such as ac and dc voltage and current, frequency, temperature (thermocouple and RTD), and process transducers, and provide standard process outputs of either 4 to 20 mA, or 0 to 10 Vdc. The DRF series feature a modern housing design, that is easily mounted on standard 35 mm DIN rails. Connections are safely and securely made through pluggable screw terminal connectors, with input and output connections on the opposite sides of the module.

The DRF-RTD RTD signal conditioners accept 2 or 3 wire 100 platinum RTDs as input and provide an isolated 0 to 10 Vdc or 4 to 20 mA output. Models are available with three different power options,
24 Vdc, 120 Vac and 240 Vac.

The DRF-RTD are ideally suited for industrial applications. All models mount on a standard 35 mm DIN rail and provide galvanic isolation between input, output and power up to 3500 Veff (model specific). Module response time is 250 mS or less.

Range Code Table for DRF-RTD
Range CodeRange
-25/75C-25 to 75°C
0/100C0 to 100°C
0/200C0 to 200°C
0/300C0 to 300°C
0/450C0 to 450°C
0/600C0 to 600°C


RTD: 2 or 3 wire 100Ω platinum
RTD: α=0.00385
Accuracy: <0.2% full scale
Linearity: <0.1% full scale
Thermal Drift: 250 ppm/°C typical
Response Time: <250 mS (90% of signal)
RTD Excitation: 1 Vdc
Input Impedance: Measured with a "Wheatstone" bridge. Bridge to positive through a 100 . resistance, Bridge to negative through a 10 KΩ resistance

Power: 24 Vdc ±10%, 230 Vac ±10% 50/60 Hz, 115 Vac ±10% 50/60 Hz
Power Consumption: <3.8 VA
Output: 4 to 20 mA and 0 to 10 Vdc

Maximum Voltage Output: 11 Vdc approx.
Minimum Voltage Output: -1 Vdc approx.
Minimum Load Resistance (Voltage): >1 KΩ Maximum Current Output: 22 mA approx.
Maximum Current Output: -1.5 mA approx.
Maximum Load Resistance (current): >400 Ω

Electrical Connections: Plug-in screw terminals
Protection: IP-30

(DC Powered Models): 120 g (4.2 oz)
(AC Powered Models): 200 g (7 oz)
(DC Powered models):
110 H x 22.5 W x 93 mm D (4.3 x 0.9 x 3.7")
(AC Powered models):
110 H x 37 W x 93 mm D (4.3 x 1.46 x 3.7")
Operating Temperature: 0 to 60°C (32 to 140°F)
Storage Temperature: -20 to 70°C (-4 to 158°F)
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