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DIN Rail Mount Loop Powered RTD Input Signal Conditioner
DRA-RTT-2
U ±0.1% Accuracy
U Linearized
U Field Rangeable
U Non-Isolated
U Economical
DRA-RTT-2 is a non-isolated signal conditioner that
accepts 100 Ω Platinum RTD input and converts
this into a 4 to 20 mA process current output which
is linearly proportional to temperature. These
signal conditioners incorporate excellent lead wire
compensation and linearization circuitry.
Field ranging is accomplished by using an internal DIP
switch array for coarse range setting and front panel
accessible multi-turn zero and span potentiometers for
fine tuning. Test terminals are provided to monitor the
transmitter’s 4 to 20 mA output without disturbing the
actual process loop.
DRA-RTT-2
Specifications
Input: 3-wire Pt 100 RTD, a = 0.00385, according
to DIN 43760/BS1904
Input Span Range: 30 to 810°C (86 to 1490°F)
Input Zero Range: -55 to 202°C (-67 to 395°F)
Field Ranging: Done by three “zero” DIP switches,
three “span” DIP switches and two fine tuning
potentiometers
RTD Sensor Lead Resistance: < 50 Ω (two ways)
Lead Compensation Error: < ±0.05°C/10 Ω
lead resistance
Sensor Excitation: < 1 mA
Output: 4 to 20 mA
Test Terminals: 40 to 200 mV represents 4 to 20 mA
Supply Voltage: 10 to 36 Vdc
Supply Variation Effect: < ±0.03% of span for
full change
Accuracy: < ±0.1% of span (including linearity,
hysteresis and repeatability)
Loop Resistance: Rmax (Ω) = (Vsupply - 10)/0.02
Temperature Stability: < ±0.015% of span/°C
SM
Extended Warranty
Program
OMEGACARESM extended warranty program is available for models
shown on this page. Ask your sales representative for full details
when placing an order. OMEGACARE
equivalent loaners.
A/IN
A/OUT
SM
covers parts, labor and
Ambient Temperature Range: -20 to 70°C
(-4 to 158°F), 5 to 95% RH
Storage Temperature Range: -30 to 85°C
(-22 to 185°F)
Enclosure: Polycarbonate, IP40 protection
Terminal Housing: Polycarbonate, IP20 protection
Mounting: 35 mm DIN rail
Dimensions: 90 H x 17.5 W x 58 mm D
(3.54 x 0.7 x 2.28" )
Weight: 70 g (2.5 oz)
To Order
Model No. Description
DRA-RTT-2 Non-isolated RTD input
signal conditioner
iDRN-PS-1000 Power supply, 95 to 240 Vac
input, 24 Vdc @ 1 A output
Comes complete with operator’s manual.
Ordering Example: DRA-RTT-2, non-isolated RTD input signal
conditioner and OCW-2 OMEGACARESM 2-year extended warranty
for DRA-RTT-2 (adds 2 years to standard 1 year warranty)
and iDRN-PS-1000 power supply.
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