The Det-Tronics LS2000SM25SMSE2R-YO is a high-performance infrared (IR) open-path gas detector receiver, specifically paired with the OPECLS2M1872R-YO model series, designed for the continuous monitoring of methane and other hydrocarbon gases over long distances.
Product Parameters (Datasheet)
- Receiver Model: LS2000SM25SMSE2R-YO
- System Model: OPECLS2M1872R-YO
- Gas Type: Methane (CH4) and various Hydrocarbons (C1-C5)
- Detection Range: 5 to 120 meters (Separation distance between TX and RX)
- Spectral Range: 3.3 μm to 3.4 μm (Infrared absorption band)
- Output Signal: 4-20 mA with HART communication / RS-485 Modbus
- Relay Outputs: Alarm, Fault, and Auxiliary (Form C)
- Input Voltage: 24 VDC (18-30 VDC range)
- Housing Material: Stainless Steel (316 Grade) for extreme durability
- Ingress Protection: IP66 / IP67 / Type 4X
- Hazardous Area Rating: FM/CSA Class I Div 1, ATEX/IECEx Ex d IIB+H2 T4
- Performance Certification: SIL 2 Capable (IEC 61508)
Country of Origin
This advanced safety instrument is engineered and manufactured by Detector Electronics Corporation (Det-Tronics), a Carrier company, in the USA.
Application Fields
The LS2000 system is the industry standard for perimeter monitoring in high-risk environments:
- LNG Terminals: Monitoring for leaks around storage tanks and loading jetties.
- Offshore Platforms: Detecting gas clouds across open decks on oil and gas rigs.
- Petrochemical Refineries: Perimeter protection for fencelines and process units.
- FPSO Vessels: Critical safety monitoring in floating production and storage.
- Pipeline Compressor Stations: Oversight of large valve manifolds and outdoor equipment.
Product Usage Instructions
- Alignment: Proper optical alignment between the Transmitter (TX) and Receiver (RX) is critical. Use the Det-Tronics handheld OPECL alignment tool to maximize signal strength.
- Mounting: Install on a rigid, vibration-free structure (like a 4-inch pipe or heavy-duty bracket) to prevent “beam wander” caused by structural movement.
- Wiring: Use shielded instrumentation cable. Ensure the 4-20mA loop is properly terminated and the housing is connected to a dedicated instrument earth.
- Optical Maintenance: Regularly clean the sapphire windows using only the manufacturer-approved cleaning solution and a lint-free cloth to maintain high “Beam Intensity.”
- Calibration: The LS2000 is factory-calibrated. Field verification should be performed using the specialized Det-Tronics test films or gas cells to confirm alarm thresholds.
Product Technical Description
The LS2000 operates on the principle of infrared absorption. The Transmitter sends a beam of IR light to the Receiver (LS2000SM25SMSE2R-YO). If a hydrocarbon gas cloud crosses this beam, it absorbs specific wavelengths of light. The receiver compares the “active” beam against a “reference” beam to calculate the gas concentration in LEL-meters. This “OPECL” (Open Path Eclipse) technology is exceptionally resistant to “false alarms” caused by fog, rain, or snow, as it uses dual-wavelength technology to distinguish between actual gas and atmospheric interference. The “YO” suffix often indicates specific regional or customized factory configurations for large-scale industrial projects.
Q&A (Common Questions)
Q: What is the benefit of LEL-meters vs. standard LEL%? A: Open path detectors measure the total gas integrated over the beam path. For example, 1 LEL-meter could be a 1-meter cloud at 100% LEL or a 2-meter cloud at 50% LEL.
Q: Does the LS2000 require a weather shield? A: While the unit is IP67 rated, a weather shield is highly recommended to prevent snow buildup or heavy rain from obscuring the optics and triggering a “Beam Block” fault.
Q: Can this receiver be used with any IR transmitter? A: No, it must be used with the corresponding Det-Tronics LS2000 series transmitter to ensure the pulse frequency and spectral signatures match.
Q: How does the unit handle 100% beam blockage? A: If the beam is completely blocked (e.g., by a vehicle or heavy obstruction), the 4-20mA output will drop to a “Fault” level (typically 1-2mA) to alert the operator that the path is obscured.
Similar Model Recommendations
- Det-Tronics LS2000-Short (For 5–30 meter paths)
- Det-Tronics LS2000-Medium (For 30–60 meter paths)
- Det-Tronics LS2000-Long (For 60–120 meter paths)
- Det-Tronics FlexVu UD10 (Display and interface for LS2000)
- Det-Tronics X3301 (Multi-spectrum IR Flame Detector for complementary safety)
For technical support or procurement of the Det-Tronics LS2000SM25SMSE2R-YO, please contact our hazardous area equipment specialists.
