The Det-tronics 010195-247 (Model PIRECLB4D1T2) is a high-performance PointWatch Eclipse infrared hydrocarbon gas detector. Engineered for the most demanding industrial environments, this device provides continuous monitoring of methane, propane, and other combustible hydrocarbon gases. Utilizing advanced PointWatch infrared technology, the Eclipse series offers superior stability and speed of response, making it a critical component for fire and gas safety systems in hazardous areas.

Product Technical Description

The PIRECLB4D1T2 operates on the principle of infrared (IR) absorption. It features a dual-source, dual-path optical design that provides internal compensation for changes in temperature, humidity, and component aging. The “B4D1T2″ configuration specifies a 4-20 mA output with HART communication, an integrated relay package, and a 3/4” NPT thread connection. The device is housed in a rugged, explosion-proof 316 stainless steel enclosure, ensuring longevity in offshore, coastal, and heavy industrial applications. It is immune to “poisoning” from silicones or hydrides, which often disable traditional catalytic bead sensors.

 

Product Datasheet & Parameters

• Model Number: PIRECLB4D1T2
• Part Number: 010195-247
• Detection Technology: PointWatch Infrared (Non-Dispersive Infrared – NDIR)
• Gas Type: Combustible Hydrocarbons (Methane/Propane/Butane/etc.)
• Output Signal: 4-20 mA with HART 7 Protocol
• Relay Package: Integrated Alarm, Fault, and Auxiliary Relays
• Input Voltage: 24V DC nominal (18-30V DC range)
• Power Consumption: 4.0 watts average; 7.5 watts peak (with heaters active)
• Enclosure Material: 316 Stainless Steel
• Conduit Entry: 3/4″ NPT
• Hazardous Area Rating: Class I, Div. 1, Groups B, C & D; ATEX/IECEx Zone 1
• Response Time: T90 < 5 seconds (Methane)

 

Country of Origin

This gas detector is manufactured by Detector Electronics Corporation (Det-tronics) in the United States (USA).

 

Application Fields

• Oil & Gas Platforms: Monitoring for leaks in high-risk offshore production areas.
• Refineries & Petrochemical Plants: Detecting hydrocarbon vapors in processing units.
• LNG Terminals: Safety monitoring for liquefied natural gas storage and transport.
• Compressor Stations: Continuous surveillance of pipeline compression equipment.
• Wastewater Treatment: Monitoring for methane buildup in digestion and processing tanks.
• FPSO Vessels: Integrated fire and gas detection for floating production units.

 

Product Usage Instructions

Install the PointWatch Eclipse in areas where gas leaks are most likely to accumulate, considering the density of the target gas (e.g., lower for heavy gases, higher for methane). Ensure the optical path is clear and use the provided weather protection baffle to prevent lens contamination. During wiring, verify that the 24V DC supply meets the peak power requirements for the internal optics heaters. For commissioning, use the HART communicator or the Det-tronics Pulse communication tool to verify zero and span calibration. The internal relays can be wired directly to local beacons or integrated into a centralized Fire & Gas (F&G) controller.

 

Common Questions & Answers (Q&A)

Q: Does this detector require frequent calibration? A: Due to its infrared design, the Eclipse is extremely stable. While annual calibration checks are recommended by most safety standards, it does not suffer from the “drift” common in catalytic sensors.

Q: Can it detect Hydrogen (H2) gas? A: No. Infrared sensors cannot detect Hydrogen because Hydrogen does not absorb infrared energy. For H2 detection, a catalytic or electrochemical sensor is required.

Q: What is the significance of the “HART” communication in this model? A: HART allows for digital diagnostics and remote configuration over the existing 4-20 mA loop, enabling maintenance personnel to check sensor health without visiting the device in the field.

Q: How does the unit handle heavy fog or rain? A: The Eclipse features sapphire optics and internal heaters to minimize the effects of condensation and moisture. The dual-path logic helps the device distinguish between environmental obstructions and actual gas presence.

 

Similar Model Recommendations

1. Det-tronics PIRECLA1A1 (Basic 4-20mA model)
2. Det-tronics PIRECLB2A1
3. Det-tronics Open Standard (OPECL) Path Detectors
4. Det-tronics X3301 Multispectrum IR Flame Detector (Complementary safety device)
5. Det-tronics C7061 Electrochemical Sensors