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- Honeywell
- 2104B3111
- Mid-Range Receiver
- USA
- 210 × 110 × 65 mm
- 7 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Honeywell 2104B3111 Mid-Range Receiver is an industrial open-path gas detection receiver unit used in the Honeywell Searchline Excel gas monitoring system.
It works as the receiving element of a transmitter–receiver pair, continuously analyzing an infrared beam sent from a matching transmitter to detect the presence of combustible gases across a defined open area. This makes it a critical component in industrial safety and gas leak detection systems.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Honeywell |
| Model | 2104B3111 |
| Product Type | Mid-Range Gas Receiver |
| System Series | Searchline Excel |
| Function | Infrared beam reception and gas detection analysis |
| Detection Method | Open-path infrared measurement |
| Measurement Role | Receives and analyzes optical gas signal |
| System Integration | Safety systems / PLC / DCS / ESD systems |
| Communication Output | Industrial control system compatible signal |
| Housing | Industrial corrosion-resistant enclosure |
| Operating Environment | Hazardous industrial areas |
| Dimensions | 210 × 110 × 65 mm |
| Weight | 7 kg |
Function and Working Principle
The 2104B3111 operates as part of a paired open-path gas detection system.
It is responsible for:
- Receiving infrared beam signals from a matched transmitter
- Measuring attenuation caused by gas clouds in the optical path
- Converting optical signal changes into gas concentration data
- Triggering alarms when gas levels exceed safety thresholds
- Providing continuous monitoring in real time
The system relies on line-of-sight alignment between transmitter and receiver, where any gas cloud in the beam path reduces signal intensity.
System Role in Architecture
The Honeywell 2104B3111 is a critical field safety device within industrial gas detection networks.
It is typically used for:
- Refinery perimeter gas monitoring
- Pipeline corridor protection systems
- LNG and gas processing facilities
- Offshore platform safety systems
- Large chemical plant hazard zones
It forms the receiving end of a long-range safety monitoring loop, feeding data into emergency shutdown and alarm systems.
Industrial Applications
- Oil and gas production facilities
- Petrochemical refineries
- LNG terminals
- Offshore drilling platforms
- Chemical processing plants
- Power generation stations
- Industrial safety monitoring systems
Installation & Integration
Proper installation is essential for accurate detection:
- Installed opposite a compatible transmitter unit
- Requires precise optical alignment
- Mounted on stable structures (towers, frames, poles)
- Must maintain clear line-of-sight path
- Integrated into safety shutdown systems (ESD)
- Requires periodic alignment checks and calibration
Compatible Components
- Honeywell Searchline Excel transmitters
- Gas detection control panels
- Safety shutdown (ESD) systems
- PLC and DCS integration modules
- Industrial alarm and monitoring systems
- Field termination units
Recommended Alternative Models
| Model | Type | Application |
|---|---|---|
| 2104B3101 | Short-range receiver | Smaller detection zones |
| 2104B3121 | Long-range receiver | Extended monitoring distance |
| 2104B3112 | Sink version receiver | Alternative configuration |
| Fixed point gas detectors | Alternative technology | Localized detection |
| Infrared gas detection systems | Generic replacement | Non-Honeywell systems |
Key Advantages
- High-reliability open-path gas detection
- Real-time monitoring of combustible gas clouds
- Suitable for large-area industrial coverage
- Fast response to gas leaks
- Strong integration with safety shutdown systems
- Designed for harsh industrial environments
- Reduces need for dense point detector installations
FAQs
Q1: What is the main function of this receiver?
It receives infrared signals and detects gas presence across an open path.
Q2: Does it detect gas directly?
It detects changes in an infrared beam caused by gas in the air.
Q3: Where is it used?
In refineries, offshore platforms, pipelines, and chemical plants.
Q4: Is it a control device?
No, it is a field safety sensing device.
Q5: Why is it important?
It provides early warning of hazardous gas leaks over large areas.
Conclusion
The Honeywell 2104B3111 Mid-Range Receiver is a key component in open-path gas detection systems. It enables reliable, real-time monitoring of combustible gas clouds and plays a vital role in protecting industrial facilities through early hazard detection.