Honeywell 2104B2111 Searchline Excel Short Range ATEX Infrared Gas Detector Receiver Unit
- Product Code: 2104B2111
- Availability: In Stock
Honeywell 2104B2111 Searchline Excel Short Range ATEX Infrared Gas Detector Receiver Unit
Manufacturer: Honeywell Analytics (Zellweger Searchline Excel Series)
Part Number: 2104B2111 (Short Range IR gas receiver, ATEX hazardous area certified)
Product Type: Open path infrared gas detector receiver, matched with 2104 series short range transmitter, flameproof explosion-proof unit
Matching Platform: Searchline Excel open path gas detection system, Experion PKS DCS, 4–20mA loop monitoring systems, ATEX Zone 1/2 hazardous industrial sites
Core Function: Receive infrared light beam from paired short range transmitter; absorbance measurement for combustible hydrocarbon gas concentration calculation; linear 4–20mA analog output (source/sink selectable); built-in misalignment self-compensation; multi-stage optical & electrical surge protection; front panel status/ fault LED indicators; 316 stainless steel explosion-proof IP66 housing; ATEX IIC T6 explosion certification; integrated gain/zero adjustment circuit; ambient temperature & pressure compensation; self-diagnosis for lens contamination, beam loss, hardware failure
1. Product Overview
2104B2111 is the short-range receiver component of Honeywell Searchline Excel open-path infrared gas detection system, designed exclusively for hazardous explosive industrial environments with ATEX Zone 1 & Zone 2 certification. It works in pair with a matching short-range IR transmitter to form a complete linear gas monitoring beam, detecting combustible hydrocarbon vapors (methane, ethane, propane, light oil gas) across open plant areas.
The receiver captures modulated infrared beams emitted by the transmitter, calculates gas concentration based on light absorption attenuation, and converts measurement values into standard industry 4–20mA analog loop signal for transmission to DCS, PLC or gas alarm controllers. The unit supports both sourcing and sinking current output modes with maximum loop load resistance up to 600Ω, compatible with all mainstream process control systems including Honeywell Experion PKS.
Advanced optical self-compensation technology automatically offsets minor installation misalignment (±0.5° angular tolerance) and gradual lens dust buildup, greatly reducing regular maintenance calibration frequency. Built-in full self-diagnosis continuously monitors lens fouling, beam signal strength, internal circuit faults and power supply anomalies, uploading fault status via the 4–20mA loop and local front-panel LED visual alarms.
Constructed with solid 316 stainless steel explosion-proof enclosure rated IP66, fully resistant to rain, dust, corrosive chemical vapors and industrial vibration. Wide operating ambient pressure compensation (91.5–105.5kPa) ensures stable measurement performance under varying site atmospheric conditions. Warm-up time under 5 minutes for immediate operational readiness after power-on, with full measurement stabilization within 1 hour.
This receiver unit is a critical spare sensing hardware for petrochemical refineries, offshore oil & gas platforms, combined cycle power plant gas turbine fuel yards and chemical reactor hazardous zones, used for system overhaul, damaged receiver replacement and periodic safety inspection maintenance.
