Honeywell Searchpoint 2106B2312 ATEX Sensepoint HT Flammable Gas Sensor

Product Overview

The Honeywell 2106B2312 is a high-performance flammable gas detector from the Searchpoint Optima Plus series, designed for hazardous industrial environments. This infrared (IR) point detector measures hydrocarbon gas concentrations, providing accurate readings from 0–20% or 0–100% LEL, depending on control configuration. Its robust design and advanced IR sensing technology make it highly resistant to chemical interference, reducing the need for frequent recalibration.

Engineered for harsh conditions, the 2106B2312 features a 316 stainless steel enclosure, wide operating temperature range, and rapid response to gas leaks, making it ideal for critical safety applications in oil & gas, chemical, and wastewater processing facilities.

Key Features

Advanced Infrared Detection

• Dual-beam, dual-compensated sensor ensures high accuracy and stability

• Resistant to catalytic sensor “poisoning” from silicones, halides, and sulfides

• Continuous internal self-checks detect optical or electronic faults

Fast and Sensitive Response

• T60 < 6 seconds, T90 < 10 seconds ensures quick detection of hazardous gases

• Dynamic heating of optics prevents condensation, fogging, or false alarms

• Minimum alarm level set at 5% LEL for early warning

Robust and Reliable Construction

• 316 stainless steel housing suitable for offshore, coastal, and industrial atmospheres

• Certified for ATEX Zone 1/2, IECEx, and other international standards

• Operates across -55°C to +150°C (-67°F to +302°F) and 20–90% RH continuous humidity

Operational Flexibility

• Compatible with 3/4 NPT or M25 entries depending on model configuration

• Low power consumption of 0.7 W at 200 mA ensures energy-efficient operation

• Output signal uses a mV bridge for accurate control system integration

Technical Specifications

Typical Applications

• Oil & Gas Platforms and FPSOs for hydrocarbon leak detection

• Chemical processing plants monitoring flammable vapor concentrations

• Gas turbine enclosures for fuel leak detection

• Wastewater treatment facilities monitoring methane accumulation

Installation Notes

The 2106B2312 is typically mounted with a 3/4 NPT or M25 thread and calibrated for specific gases like Methane or Propane. Ensure the calibration label matches the intended gas before installation. Its rugged IR sensor design reduces the need for routine maintenance and calibration.

FAQ

Q: How resistant is the 2106B2312 to environmental interference?
A: The dual-beam IR technology prevents false readings from chemical "poisons," condensation, and dust.

Q: What is the typical response time to gas leaks?
A: T60 is less than 6 seconds, and T90 is under 10 seconds, ensuring fast detection.

Q: Can this sensor operate in extreme temperatures?
A: Yes, it functions from -55°C to +150°C (-67°F to +302°F).

Q: Is calibration required frequently?
A: No, the dual-compensated IR design minimizes the need for frequent recalibration.