RTD Input Signal Conditioner
100 Ω Platinum (Pt100) RTD Element, 0.00385 Curve
2 or 3 Wire Configuration
Cable Resistance Compensation up to 10 Ω
Upscale Break Protection
Response Time < 250 mS
Galvanic Isolation Between Input, Output and Power
This product has been discontinued. For a potential replacement, please see TXDIN402, DR-i3P, or DRST-UN.
Find how signal conditioning works on this link.
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 signal
conditioners accept 2 or 3 wire
100Ω platinum RTDs (Pt100) as input and
provide an isolated 0 to 10 Vdc
or 4 to 20 mA output. Models are
available with three different power
24 Vdc, 115 Vac and
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
Range Code Table for DRF-RTD
|-25/75C||-25 to 75°C|
|0/100C||0 to 100°C|
|0/200C||0 to 200°C|
|0/300C||0 to 300°C|
|0/450C||0 to 450°C|
|0/600C||0 to 600°C|
RTD: 2 or 3 wire 100Ω platinum
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
(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)