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RTD Input Non-Isolated DIN Rail Loop-Powered Signal Conditioner
The DRSL-RTD-LP RTD input non-isolated DIN rail loop-powered signal conditioner measures a standard 2-, 3- or 4-wire Pt100 temperature sensor and provides a passive analog current output signal. The DRSL-RTD-LP provides a competitive choice in terms of both price and technology for interfacing RTD signals to SCADA systems or PLC equipment. This unit is powered by the host (output) current signal loop. Low power consumption facilitates DIN rail mounting without the need for any air gap. Easy configuration of more than 1000 factory calibrated measurement ranges is done via DIP-switches. The unit operates over a wide temperature range from -25 to 70°C (-13 to 158°F).
Input | |
Input Type | 2, 3, or 4-wire Pt100 RTD |
Temperature Range | -200 to 850°C (-328 to 1562°F) |
Sensor Current, RTD | <150 µA |
Sensor Cable Specifications | 50Ω per wire or 50 nF |
Effect of Sensor Cable Resistance (3 or 4-wire RTD) | <0.002Ω/Ω |
Broken Sensor Detection | >800Ω |
Shorted Sensor Detection | <18Ω |
Output | |
Current Output | |
Programmable Signal Ranges | 0 to 20 mA and 4 to 20 mA |
Range Limits (NAMUR NE43 Out of Range) | Below 3.8 mA or above 20.5 mA |
Sensor Error Detection (Dip Switch Selectable for Enable or None) | Below 3.5 mA or above 23 mA |
Incorrect DIP-Switch Setting Identification | Below 3.5 mA or above 23 mA |
Output Error Level | DIP switch selectable for upscale or downscale |
Load Resistance (Ω) | ≤(Vsupply -3.3)/ 0.023 |
Load Stability | ≤0.01% of span/100Ω |
General | |
Supply Voltage | 3.3 to 35 Vdc |
Voltage Drop | 3.3 Vdc |
Power Consumption | 1 W max |
Internal Consumption | 0.65 W max |
Signal/Noise Ratio | >60 dB |
Response Time (0 to 90%, 100 to 10%) | <30 ms/300 ms (selectable, provides either fast response or signal dampening as needed). |
Accuracy | Better than 0.2°C or ±0.1% of selected range |
Temperature Coefficient | ≤±0.02°C/°C |
EMC Immunity Influence | <±0.5% of span |
Extended EMC Immunity | |
NAMUR NE 21, A Criterion, Burst | <±1% of span (span = selected input range) |
Environmental | |
Operating Temperature | -25 to 70°C (-13 to 158°F) |
Storage Temperature | -40 to 85°C (-40 to 185°F) |
Calibration Temperature | 20 to 28°C (68 to 82°F) |
Relative Humidity | 0 to 95% RH non-condensing |
Protection Degree | IP20 |
Installation Area | Pollution degree 2 and measurement/overvoltage category II |
Mechanical | |
Dimensions | 113 H x 6.1 W x 115 mm D (4.4 x 0.24 x 4.5") |
Weight | 70 g (0.15 lb) approx |
DIN Rail Type | DIN EN 60715 - 35 mm |
Wire Size | 0.13 x 2.5 mm²/AWG 26 to 12 stranded wire |
Screw Terminal Torque | 0.5 Nm |
OMEGA DRSL-RTD-LP Non Isolated Loop Powered DIN Rail RTD input Conditioner - Data sheet 475.3 KB |
OMEGA DRSL-RTD-LP Non Isolated Loop Powered DIN Rail RTD input Conditioner - Manual 1.2 MB |