DRSL-RTD-ISO DIN Rail RTD Input Signal conditioner/Low profile
RTD Input DIN Rail Signal Conditioners
Supported Applications
The Omega DRSL-RTD Series consists of DIN rail signal conditioners designed to interface RTD inputs with SCADA systems or PLC equipment. The series converts signals from 2, 3, or 4-wire Pt100 RTDs into unipolar analog outputs suitable for industrial control environments.
Operating Conditions & Performance
The DRSL-RTD Series operates over an ambient temperature range of -25 to 70°C (-13 to 158°F) with a storage capability from -40 to 85°C (-40 to 185°F). The units support relative humidity levels of 0 to 95% RH non-condensing and carry an IP20 protection degree. Measurement ranges span -200 to 850°C (-328 to 1562°F) with a sensor current below 150 μA.
Accuracy specifications differ by model: the DRSL-RTD offers better than 0.2°C or ±0.1% of selected input range, while the isolated DRSL-RTD-ISO provides better than 0.1°C or ±0.05% of selected input range. Response time is selectable at <30 ms/300 ms (0 to 90%, 100 to 10%). The series includes broken sensor detection (>800 Ω) and shorted sensor detection (<18 Ω).
Configuration Options
The series supports configuration via DIP-switches for more than 1,000 factory-calibrated measurement ranges. Output signals are programmable to match specific system requirements.
• Output Signals: Current outputs include 0 to 20 mA and 4 to 20 mA; voltage outputs include 0 to 10 V, 2 to 10 V, 0 to 5 V, and 1 to 5 V.
• Power Supply: DRSL-RTD models accept 16.8 to 31.2 Vdc via connectors; DRSL-RTD-ISO models accept 16.8 to 31.2 Vdc via power rail or connectors.
• Isolation (DRSL-RTD-ISO Only): Provides 3-way isolation between input, output, and supply with a test voltage of 2.5 kVac (reinforced) and working voltage of 300 Vac.
• Error Detection: Sensor error detection is selectable via DIP-switch for enable or none; incorrect DIP-switch settings trigger specific out-of-range outputs.
Mechanical installation features DIN EN 60715 - 35 mm rail mounting with screw terminals accepting wire sizes from 0.13 x 2.5 mm² / AWG 26 to 12 stranded wire (torque: 0.5 Nm). The unit dimensions are 113 H x 6.1 W x 115 mm D (4.4 x 0.24 x 4.5") with an approximate weight of 70 g (0.15 lb).
Key Product Differences
The series is available in two primary configurations:
• DRSL-RTD: Non-isolated RTD input DIN rail signal conditioner.
• DRSL-RTD-ISO: Isolated RTD input DIN rail signal conditioner offering surge suppression and protection against transients and noise. This model requires the DRSL-PWR-RAIL power rail for operation when using the rail interface.
Accessories available for the series include the DRSL-PWR-RAIL (1 m length, with cover and end covers), DRSL-PCU (power connector unit, 24 Vdc/2.5 A output), and DRSL-MOD-STOP (module stop). The OMEGACARE™ extended warranty program is available for these models.
| Accuracy Detail | Better than 0.2°C or ±0.1% of selected range |
| Approvals | CE, UL, RoHS |
| Calibration Temperature, Max | 28 °C |
| Calibration Temperature, Min | 20 °C |
| Electrical Output | 4 to 20 mA |
| EMC Immunity Note | NAMUR NE 21, A Criterion, Burst: <±1% of span (span = selected input range) |
| Enclosure Ratings | IP20 |
| Height | 113 mm |
| Input Range Note | Sensor Current, RTD: <150 µA;Sensor Cable Specifications: 50 Ωper wire or 50 nF;Effect of Sensor Cable Resistance (3 or 4-wire RTD): <0.002 Ω/Ω;Broken Sensor Detection: >800 Ω;Shorted Sensor Detection: <18 Ω |
| Input Type | RTD |
| Installation | Pollution degree 2 and measurement/overvoltage category II |
| Length | 115 mm |
| Mounting | DIN Rail 35 mm Standard, EN 60715 |
| Noise Calibration | >60 dB |
| Number of Inputs | 1 |
| Operating Temperature, Max | 70 °C |
| Operating Temperature, Min | -25 °C |
| Output Detail | Current: Range Limits(NAMUR NE43 Out of Range):Below 3.8 mA or above 20.5 mA for 4 to 20 mA output; 0 mA or above 20.5 mA for 0 to 20 mA output Sensor Error Detection(Dip Switch Selectable for Enable or None): Below 3.5 mA or above 23 mA for 4 to 20 mA output; 0 mA or above 23 mA for 0 to 20 mA output Incorrect DIP-Switch Setting Identification: Below 3.5 mA or above 23 mA for 4 to 20 mA output; 0 mA or above 23 mA for 0 to 20 mA output Output Error Level: DIP switch selectable for upscale or downscale. Voltage: Range Limits (Out of Range):Range ±2.5% Sensor Error Detection (Dip Switch Selectable for Enableor None): 0V or selected range + 10% Incorrect DIP-Switch Setting Identification: 0V Output Error Level: DIP switch selectable for upscale or downscale |
| Output Signal | Current, Voltage |
| Power Consumption | 0.7 W, Internal - 0.65 W |
| Relative Humidity | 0 to 95% RH (non-condensing) |
| Response Time | < 30 ms |
| Response Time Note | Response Time (0 to 90%, 100 to 10%): <30 ms/300 ms (selectable, provides either fast response or signal dampening as needed) |
| Screw Terminal Torque | 0.5 Nm |
| Series ID | DRSL-RTD-Srs-Sig-Cond |
| Stability | Load Stability: ≤0.01% of span/100 Ω |
| Storage Temperature, Max | 85 °C |
| Storage Temperature, Min | -40 °C |
| Supply Power Type | DC |
| Supply Voltage | 16.8 to 31.2 Vdc |
| Temperature Coefficient | ≤±0.02°C/°C |
| Voltage Output Range | 0 to 10 Vdc |
| Weight | 70 g |
| Width | 6.1 mm |
| Wire Gauge | 26 to 13 AWG |
OMEGADRSL-PWR-RAIL
Power rail (with cover and two end covers, one right hand and one left hand), 1 m (3.3') length
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800-567-8686Normally ships in 2-3 weeks- OMEGA
DRSL-PCU
Power connector unit, 24 Vdc/2.5 A output to power rail
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800-567-8686Normally ships in 2-3 weeks - OMEGA
DRSL-MOD-STOP
Module stop (screwed onto DIN rail to support and hold mounted devices)
Call Today!
800-567-8686Normally ships in 2-3 weeks