Honeywell 2108n5101n | Ethylene | Gas Detectors (explosion-proof) | Gasdetectorsusa
Gas Leak and Flame Detectors, Analyzers, Alarm Devices and Calibration Gas

HONEYWELL   2108N5101N

Honeywell Ethylene Optima Plus advanced stainless steel Point Infrared Hydrocarbon Gas Detector for LEL. 4-channel (dual compensated) optics-block, 3-Wire 4-20mA source, optional HART. Ethylene calibration, for use in remote sampling systems, includes flow housing and remote gassing cell, configured as current source output


HART Output
Calibration (UL)
Please select one curve only
Calibration (ATEX)
Please select one curve only

   13 Weeks  ]

Kit also includes Dust Barrier 2108B0259, Deluge and Heat Shade 2108D0275, Weather housing 2108B0276, fully assembled and tested as a complete unit.

Largest selling point IR hydrocarbon gas detector in the world.

Advanced infrared point gas detector


Why Searchpoint Optima Plus is the right choice...
  • The proven strengths of the original Searchpoint OPTIMA design
  • Experience gained from over 30,000 units installed worldwide
  • The latest technology and techniques used to develop the successful Sieger open path gas detector, the Searchline Excel
  • Improved reliability
Why Infrared?
  • Failsafe operation
  • Fast speed of response
  • Reduced routine maintenance
  • Immune to catalytic poisons
  • Long operating life
  • Works in inert atmospheres
Why Searchpoint Optima?
  • Can detect a wide range of hydrocarbon gases including solvents
  • Increased reliability with no moving parts
  • Increased stability from self compensating optics
  • Immune to long term component drift
  • Remote functional gas test facility
  • Certified for North American and European Hazardous areas
Why Searchpoint Optima Plus?
  • Increased false alarm rejection with ✔2 SOFTWARE™
  • Increased uptime with contaminated optics warning
  • Dynamic Heating Control ensures condensation free optics
  • No undetected failures
  • Improved diagnostics
  • Integral event logging
  • Reduced power consumption
  • Certified to many hazardous area classification schemes including: European (ATEX), UL, CSA and more
Optics Block

The 4-channel (dual compensated) optics-block is the heart of the Searchpoint OPTIMA PLUS. It is specifically designed to compensate for changes in the external environment similar to 2- channel designs, but also compensates for long term component drift such as infrared sources and detectors. This combined with the de-focussed beam provides the Searchpoint OPTIMA PLUS with the most stable optics design possible.

Searchpoint Optima Plus Specification
Measuring range 4-20 mA sink or source, (Default current source)
Inhibit 1-3 mA (Default 2 mA)
Warning 0-4 mA (Default 4 mA)
Fault 0 mA
Over range 20-21.5 mA (Default 21 mA)
Digital Output Optional Multidrop Modbus RS485 (via DVC/DX100(m))
Material 316 stainless steel
Weight 1.6 kg
Optima PLUS (HC) Baseline < ±1% LEL, 50% FSD <±2% LEL
Optima PLUS (ET) Baseline < ±2% LEL, 50% FSD <±3% LEL
Repeatability < ±2% LEL at LEL 50% FSD
Linearity < 5% FSD
Response time T50 < 4.5 seconds, T90 < 6.5 seconds (for methane, including weather protection)
Operational and certified -40°C to +65°C temperature range
Drift with time and over temperature range -40°C to +65°C
Baseline < ±2% LEL
50% FSD < ±4% LEL
Variation with pressure 0.1% (of reading) per mbar
Power supply 18-32 V (24 V nom) DC, < 4.5 W max
Environmental protection IP 66/67
Diagnostics (and re-calibration) Via certified Hand Held Interrogator
Safety approvals

II 2 G EEx d IIC
   T5 (Tamb -40°C to +55°C)
   T4 (Tamb -40°C to +65°C)
UL/CSA Class 1, Div 1, groups B, C, and D (-40°C to +65°C)

Performance approvals EN50054, EN50057, CSA C22.2 152.
EMC compliance EN 50270
Export Info
Made inUnited Kingdom
Harmonized Tariff Code (HTC)9027102000

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HONEYWELL  2108B0259

Dust Barrier for Honeywell Optima Plus.


HONEYWELL  2108D0275

Deluge / Heat Shade for Honeywell Optima Plus


HONEYWELL  2108B0276

Weather housing for Honeywell Optima Plus.



Honeywell Optima Plus calibration kit, 3/16" ID Tubing, gas cover, C-10 inlet regulator for Optima without RGC Remote Gassing Cell (contains 998-100-004 tubing, 2108D0258 gas cover, 998-100-002 C-10 regulator (2LPM), W/GAS CELL), 998-100-003 carrying case. Calibration gas cylinder not included-


HONEYWELL  04200-A-1015

Optima duct mounting kit for Honeywell Optima Plus. Use only with ATEX and SAA Versions

> ETHYLENE :    5 Items found.

BACHARACH  6600-8075

Bacharach MGS-550 Industrial Refrigerant Gas Detector with semiconductor sensor for Ethylene (C2H4) 0-2,000 ppm. 3 x relays, analog output, RS485 MODBUS output and 5-digit display. Remote sensor capabilities. IP66 Housing. CE, UL and CSA Approvals.



Macurco Ex Series Explosion Proof Catalytic Bead Gas Detector for detection of Ethylene (C2H4) 0-100%LEL. Includes 4-20 mA Output, 3 Onboard Relays, Modbus RS-485 Communication and LCD Digital Display. Aluminium Enclosure. IP66. CSA approvals for Class I Division 2.



DETCON  961-ED0026-100G

Detcon DM-100-C2H4 Electrochemical Ethylene (C2H4) 0-100ppm or 0-200ppm Sensor Assembly with optional loop powered display. 4-100 mA. Features intelligent electronices, non-intrusive operator interface and comprehensive fault diagnostics. Optional 316 Stainless Steel Housing. 3/4" NPT thread. XP-instrinsically safe. Class I, Div. 1, Groups A, B, C, & D.


DETCON  967-12ED90-100

Detcon DM-700-C2H4 Electrochemical Smart Ethylene (C2H4) 0-100 ppm or 0-200 ppm Sensor Assembly with LED display. 4-20mA and Modbus RS-485 outputs. 316 Stainless Steel Housing. Water Proof, Corrosion Proof, Vibration Proof and Explosion proof. NEMA 4X. IP66. Class I, Div. 1, Groups B, C, & D. CSA and ATEX approvals.



Honeywell Ethylene Optima Plus advanced stainless steel Point Infrared Hydrocarbon Gas Detector for LEL, 4-channel (dual compensated) optics-block, 3-Wire 4-20mA source, optional HART. Ethylene calibration with dust barrier, weather housing, deluge/heat shade, configured as current source output. Optional remote gassing cell.


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