Otis Instruments Omniguard Model 860 Flame Detector

Availability: In stock
Operating Temperature Range-40°F to 185ºF (-40°C to 85°C)
Spectral ResponseUV: Peak Sensitivities of 0.22 pm; Infrared: Peak of 4.4 pm (Standard), and 2.9 pm and 4.4 pm (Dual Pass)
Nominal Voltage24 VDC (Ripple Voltage <240mV)
Voltage Range20 to 30 VDC
Power Consumption90 mA (Standby), 110 mA (Alarm), 250 mA (Auto and Manual Test)


  • Relays (2): Fire, Trouble, Dry Contacts, Hermetically Sealed
  • Rated: 2 A at 28 VDC (User Selects NO or NC)
  • Fire Relay: User Selects Latching or Non-Latching

Current Loop (Standard Version): 0 to 20 mA Output

  • 20 mA = Fire
  • 16 mA = UV or IR Presence
  • 4 mA = Ready
  • 0 mA = 20
Digital OutputProgrammable RS-485 Modbus Serial Output
Dimensions4.5 H x 5.5 W x 6 D in.
Total Weight5 lbs. (Aluminum), 13 lbs. (Stainless Steel)
Conduit Entry3/4-14 NPTF or M20-1.5
Optional Accessories- Swivel Mount: No. 20856 (Used with Aluminum), No. 70991 (Used with Stainless Steel)
- Portable Test Unit: Model 540 / 545
- Air Shield Assy Kit: No. 8001023
- Rain Shield: No. 23546
Certifications & Approvals- Class I, Division 1, Groups B. C & D (Explosion Proof)
- Class II, Division 1, Groups E, F & G (Dust Ignition Proof)
- NEMA 4X Weatherproof, Dust-Tight, Watertight
- CE0081 Ex d II 2 G/D
- Ex d IIB+H2 T5 Gb for Gas on 660-0X000
- Ex tb IIIC T100°C Db IP6X for Dust on 660-0X000x
- Ex d IIB+H2 T4 Gb for Gas on 660-1X000
- Ex tb IIIC T1 135°C Db IP6X for Dust on 660-12000
- Copper-free Aluminum Housing Conversion Coated to MIL-C-5541C. Class 3 (White) - Standard
- Stainless Steel Housing with Passive Finish per MIL-5-5002C, Type 1 - Optional


The Omniguard Model 860 UV/IR flame detector is designed to detect unwanted fires and output alarm information. The Model 860 senses ultraviolet radiation and infrared radiation in the appropriate wavelengths for early fire detection. Utilizes the patented Fire Event Analysis Algorithm to provide superior false alarm immunity. Available in two versions: one is for hydrocarbon fires only, and one is for hydrocarbon and certain non-hydrocarbon fires.


  • Patented Fire Event Analysis (FEA) Algorithm for Superior False Alarm Immunity
  • Operating Temperature: -40°F to 185°F (-40°C to 85°C)
  • User-Selectable Sensitivities
  • Long Range Detection
  • Advanced Through-the-Lens
  • Widest Field View in the Industry Diagnostic Self-Test of 120°C
  • Self-Contained, Explosion-Proof Enclosure
  • High Intensity, Localized Indication of Fire or Fault
  • Field Configurable Relays and Sensitivity
  • Economical No-Test Version Available
  • State-of-the-Art Microprocessor Control with Proprietary Fre Library * FM, CSA, IECEx and ATEX Approvel
  • Podust routeror Applications for
  • All Inclusive 3-Year Warranty on Parts and Labor

​Please refer to datasheet for more information
Technical Data-Sheet