The FlameSpec-IR3 flame detector provides ultra-fast response, high performance and reliable detection of all types of hydrocarbon fires (visible and non-visible). The detector addresses slow growing fires as well as fast eruption of fire using improved triple IR (IR3) technology. It operates in all weather and light conditions with highest immunity to false alarms.

  • Detection within 40 milliseconds of fireballs or explosions
  • Standard fire in only 1.3 second from 50 ft. (15m) and 3.7 seconds from 230 ft. (70m).

Add to that, the integral event recording, on top of the proven superior capabilities of Triple IR (IR3) flame detection and you have a very powerful safety tool to protect your personnel, plant and process.


FlameSpec IR-3 Datasheet

Key Benefits

  • High immunity to false alarm
  •  Extreme sensitivity – up to 260 ft. (80m) for a 1 ft2 (0.1m2) n-heptane pan fire
  • Ultra-fast detection mode – detection within 40 milliseconds for fireballs or explosions
  • 1.3 seconds detection time – for 1 ft2 (0.1m2) n-heptane pan fire at up to 50 ft. (15m) distance
  • Data/Event logger – alarms, faults and other relevant events are logged to non-volatile memory
  • Built-in-Test (BIT) – Automatic and manual self-test of window cleanliness and the overall operation of the detector
  • Window heater to avoid condensation and icing
  • Tilt mounting bracket can be connected either above or below the detector


IP66 & 68 ; Nema 4X & 6P

Explosion Proof:
Ex db IIC T5 Gb or Ex db eb IIC T5 Gb and Ex tb IIIC T95°C Db -55°C<Ta<75°C
Ex db IIC T4 Gb or Ex db eb IIC T4 Gb and Ex tb IIIC T105°C Db -55°C<Ta<85°C
Ex db IIC T5 Gb -50°C≤Ta≤75°C
Ex db IIC T4 Gb -50°C≤Ta≤85°C
Class I, Div. 1, Groups B, C & D; T4
Class I, Zone 1, AEx/Ex db IIC T4 Gb
T4 -50°C≤Ta≤85°C
T5 -50°C≤Ta≤75°C

Functional Safety
SIL2, per IEC 61508


ANSI FM 3260


Additional information

Weight 6.6 lbs
Dimensions 6 × 4 × 4 in