DRSL-RTD-LP-Sig-Cond

Non Isolated Loop Powered DIN Rail RTD Input Conditioner

Models In Stock

2, 3 or 4-Wire Pt100 RTD Input
Powered By the Host (Output) Current Signal Loop
High Accuracy Better Than 0.2°C or 0.1% of Selected Range
Slimline 6 mm (0.24') Housing

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From ^TWD 5,401

Models In Stock

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1 Variations available

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Data Sheet

Product Overview

Approvals CE, UL, RoHS
Calibration Temperature, Max 28 °C
Calibration Temperature, Min 20 °C
Electrical Output 0 to 20 mA, 4 to 20 mA
EMC Immunity Note NAMUR NE 21, A Criterion, Burst: <±1% of span (span = selected input range)
EMC Standard NAMUR NE 21
Enclosure Ratings IP20
Height 113 mm
Installation Pollution degree 2 and measurement/overvoltage category II
Length 115 mm
Mounting DIN Rail 35 mm Standard, EN 60715
Noise Calibration >60 dB
Operating Temperature, Max 70 °C
Operating Temperature, Min -25 °C
Output Value Process
Power Consumption 1 W, Internal - 0.65 W
Relative Humidity 0 to 95% RH (non-condensing)
Screw Terminal Torque 0.5 Nm
Series ID DRSL-RTD-LP-Sig-Cond
Stability Load Stability: ≤0.01% of span/100 Ω
Storage Temperature, Max 85 °C
Storage Temperature, Min -40 °C
Voltage Loss 3.3 Vdc
Weight 70 g
Width 6.1 mm
Wire Gauge 26 to 13 AWG

Supported Applications

The Omega DRSL-RTD-LP is a non-isolated, loop-powered DIN rail signal conditioner designed to interface 2-, 3-, or 4-wire Pt100 RTD temperature sensors with SCADA systems and PLC equipment. The unit converts the sensor input into a passive analog current output signal suitable for industrial process monitoring.

Operating Conditions & Performance

The DRSL-RTD-LP operates within an ambient temperature range of -25 to 70°C (-13 to 158°F) and supports storage temperatures from -40 to 85°C (-40 to 185°F). It is rated for environments with relative humidity up to 95% RH non-condensing. The device provides an accuracy of better than 0.2°C or ±0.1% of the selected range, with a temperature coefficient of ≤±0.02°C/°C.

Performance specifications include:

Input Range: -200 to 850°C (-328 to 1562°F)
Sensor Current (RTD): <150 μA
Response Time: <30 ms/300 ms (selectable, 0 to 90% / 100 to 10%)
Signal-to-Noise Ratio: >60 dB
EMC Immunity Influence: <±0.5% of span (Extended EMC: NAMUR NE 21, A Criterion)

The unit is designed for use in Pollution Degree 2 and Overvoltage Category II installations.

Power and Electrical Limits

Supply Voltage: 3.3 to 35 Vdc (loop-powered)
Voltage Drop: 3.3 Vdc
Max Power Consumption: 1 W max (Internal: 0.65 W max)
Load Resistance: ≤(V_supply - 3.3)/0.023 Ω
Sensor Cable Specifications: 50Ω per wire or 50 nF
Effect of Sensor Cable Resistance (3 or 4-Wire RTD): <0.002Ω/Ω

Configuration Options

The DRSL-RTD-LP series is configurable via DIP switches to select from over 1,000 factory-calibrated measurement ranges. The device supports programmable output signal ranges of 0 to 20 mA and 4 to 20 mA.

Input and Output Configuration

Input Type: 2, 3, or 4-wire Pt100 RTD
Broken Sensor Detection: >800Ω (Output: Below 3.5 mA or above 23 mA)
Shorted Sensor Detection: <18Ω
NAMUR NE43 Range Limits: Below 3.8 mA or above 20.5 mA
Error Identification: Incorrect DIP-switch settings trigger output levels below 3.5 mA or above 23 mA.
Output Error Level: Selectable for upscale or downscale via DIP switch.

Mechanical and Environmental Features

Housing Protection Degree: IP20
DIN Rail Type: DIN EN 60715 - 35 mm (requires enclosure for live part protection)
Dimensions: 113 H x 6.1 W x 115 mm D (4.4 x 0.24 x 4.5")
Weight: Approx. 70 g (0.15 lb)
Wire Size: 0.13 to 2.5 mm² / AWG 26 to 12 stranded wire
Screw Terminal Torque: 0.5 Nm

Key Product Differences

The DRSL-RTD-LP is a specific model within the broader DRS-L family of signal conditioners, distinguished by its loop-powered architecture and non-isolated design for Pt100 RTD inputs. Unlike isolated variants (e.g., DRS-L-RTD-ISO) or thermocouple models in the same manual scope, this unit is powered directly from the host output current signal loop.

Available accessories include: