Honeywell 2108B2001N Searchpoint Optima Plus Infrared Gas Detector

Important Correction

1. Basic Product Information

• Full series: Searchpoint Optima Plus NDIR infrared hydrocarbon gas detector
• Model: 2108B2001N
• Sensing principle: Non-dispersive infrared (NDIR), no catalytic bead, anti-poisoning
• Housing material: 316 stainless steel, corrosion-resistant
• Protection grade: IP66 / IP67, rainproof and dustproof for field direct installation
• Explosion certification: ATEX, applicable to Zone 1 & Zone 2 hazardous explosive areas

2. Core Electrical & Measurement Parameters

1. Power supply: 18–32 VDC industrial loop power supply
2. Measuring range: 0–100% LEL (lower explosive limit) for hydrocarbon gas
3. Signal output dual modes:
   • Analog: Standard 4–20mA current signal, compatible with DCS, PLC, gas alarm control panels
   • Digital: RS485 Modbus RTU multi-drop communication, upload gas concentration, fault codes, device status
4. Relay output: 2 sets of Form C alarm relays (high concentration alarm / fault alarm)
5. Power consumption: ~1.5W, low power loop design
6. Response speed: Ultra-fast response, stable measurement even in inert nitrogen atmosphere
7. Operating temperature: -40℃ ~ +85℃, adapts to extreme outdoor and process environments

3. Key Technical Advantages

1. NDIR infrared sensor, immune to silicone, lead, sulfur poisoning; far longer service life than catalytic bead detectors
2. Failsafe self-diagnosis design, automatically report lens contamination, circuit failure, sensor abnormal
3. Minimal maintenance: Only regular lens cleaning required, no frequent calibration cycles
4. Built-in event log, record alarm and fault historical data for post-event analysis
5. Support remote gas injection calibration without disassembly on site
6. Stainless steel shell, suitable for offshore platforms, chemical corrosive environments
7. Dual signal output, flexible access to safety interlock control systems

4. Communication & System Matching

• Modbus RTU RS485 bus: Multiple detectors can be connected in one bus to Honeywell Experion PKS DCS, third-party PLC safety systems
• 4–20mA analog signal: Directly access DCS analog input modules for real-time gas concentration display
• Relay dry contacts: Interlock with exhaust fans, emergency cut-off valves, audible/visual alarms

5. Typical Application Scenarios

• Petrochemical refineries, natural gas stations, offshore oil & gas platforms
• Chemical plants, solvent storage workshops, paint spraying rooms
• Oil depots, boiler rooms, fuel filling areas
• Pharmaceutical, printing, coating flammable solvent production lines
• Hazardous area gas safety monitoring linked to DCS fire & gas control systems