Flame Detector

A flame detector is a sensor designed to detect and respond to the presence of a flame or fire.

Flame Detectors operate in the harshest environmental conditions and are self-contained stand-alone devices designed for direct connection to control and alarm systems or automatic fire extinguishing systems.

Flame Detectors manufactured by Spectrex operate in the harshest onshore and offshore environmental conditions and are self-contained stand-alone flame detection devices designed for direct connection to control and alarm systems or automatic fire extinguishing systems.

Spectrex Flame Detectors | Protect life and property in hazardous area industries and potentially explosive atmospheres with Spectrex flame detectors from the SharpEye range.

Etalon Security is supplier of Spectrex Flame Detectors for the accurate detection of Flame in industrial, potentially explosive atmospheres and hazardous area locations according to ATEX and IECEx classifications – Spectrex detectors are Hazardous Area Approved (FM/ATEX/IECEx/CSA and more) for location in Zone 1 & Zone areas (ATEX) and 3rd party Performance Approved (EN54-10, FM, DNV) for onshore and offshore flame detection.

Hazardous are industries including offshore oil/gas platforms and FPSOs, onshore oil refineries, processing plants, pipelines, storage farms and LPG/LNG plants all utilise or produce a wide range of hazardous flammable liquids and gases that can be detected using correctly specified both flame and gas detectors.

Spectrex is a world leader in Optical Flame Detection and Open Path Gas Detection – the first to launch major innovations that have become trade standards such as the first UV/IR and IR3 Flame Detector designs, with continuing new designs meeting application challenges. Spectrex was first to incorporate the Xenon Flash in OPGD detectors to solve false alarm issues common in the industry.

The range of Spectrex flame detectors are trusted and specified throughout the hazardous area industires protecting personnel, property and the environment.

Flame Detector Selection Guide

Fire Source	UV (A)	IR (B)	UV/IR (C)	IR3 (D)	Hydrogen (E)	Multi IR (F)
Gasoline	1	1	1	1	4	1
Diesel Fuel	2	2	2	2	4	2
N‑Heptane	1	1	1	1	4	1
Kerosene	2	2	2	2	4	2
JP8/JP4/JP5	2	2	2	2	4	2
Alcohol (Ethanol)	2	2	2	2	2	2
Methane	2	3	3	3	4	3
LPG	2	3	3	3	4	3
Hydrogen	2	4	3	4	1	2
Petrochemicals	1	1	2	1	4	1
Metals	2	4	3	4	4	4
Propellants (black powder)	1	3	2	3	4	3
Textiles (cotton)	3	3	3	3	4	3
Aromatic Solvents	2	2	2	2	4	2
Wood, Paper	3	3	3	3	4	3
Bonding Glue Substances	2	2	2	2	4	1

Spectrex Flame Detectors 

• (A) SP-4040-U, SP-4040-UB
• (B) SP-4040-R
• (C) SP-2020-ML, SP-4040-L, SP-4040-LB
• (D) SP-2020-MI1, SP-2020-MI3, SP-2020-CTIPS, SP-4040-I
• (E) SP-2020-SH (special order)
• (F) SP-4040-MSS

• (1) 100%-75% of the detector sensitivity
• (2) 75%-50% of the detector sensitivity
• (3) 50%-25% of the detector sensitivity
• (4) Not suitable

SPECTREX Flame Detector Product Range

Flame Detector Model	Flame Detection Technology	Spectrex Product Description	Detector Image
Spectrex SP‑4040‑1	Infra Red Triple IR (IR3)	Spectrex SP‑4040‑I, a multi-spectrum flame detector based on three IR bands (IR3), detects fuel and gas fires at long distances with the highest immunity to false alarms. The SP‑4040‑I IR3 can detect a 0.1 m2 gasoline pan fire at 65 metres in less than 5 seconds. The SP‑4040‑I is the most durable and weather resistant flame detector currently on the market. The flame detector features include a heated window, to eliminate condensation and icing; HART capabilities for digital communications; lower power requirements; and a compact, lighter design.
Spectrex SP‑4040‑M	Infra Red Multi IR	Spectrex SP‑4040‑M Multi IR Flame Detector is specifically designed for detection of hydrocarbon and hydrogen flames. It detects hydrocarbon‑based fuel and gas fires at long distances with the highest immunity to false alarms. The SP‑4040‑M can detect a gasoline pan fire at 65 metres or a hydrogen flame at 30 metres in less than 5 seconds. The SP‑4040‑M is the most durable and weather resistant range of flame detectors currently on the market. The flame detector features include a heated window, to eliminate condensation and icing; HART capabilities, for digital communications; lower power requirements, and a compact, lighter design.
Spectrex SP‑4040‑L & SP‑4040‑LB UV/IR	Combination of UV & IR Sensors	Spectrex SP‑4040‑L (SP ‑4040‑LB, with Built‑in Test option) is a flame detector provides a combination of UV and IR sensors, where the IR sensor operates at a wavelength of 2.5‑3.0 µm, and can detect hydrocarbon‑based fuel and gas fires, hydroxyl and hydrogen fires, as well as metal and inorganic fires. The UV/IR flame detector senses radiant energy in the short wave section of both the ultraviolet and infrared portions of the electromagnetic spectrum. The signals from both sensors are analysed for frequency, intensity and duration. Simultaneous detection of radiant energy in both the UV and IR sensors triggers an alarm signal. The UV sensor incorporates a special logic circuit that helps prevent false alarms caused by solar radiation.
Spectrex SP‑4040‑UFL	UV/IR High‑Speed Optical Flame Detector	Spectrex SharpEye UV/IR High‑Speed Optical Flame detector, SP‑4040‑UFL, is designed to meet two major requirements: • High‑Speed Response (20 msec) • High Reliability (immunity to False Alarm)This flame detector is based on Spectrex’s well‑known military detector used in Armoured Vehicle Explosion Suppression System, combined with the industrial UV‑IR detectors SP‑2020‑LB and SP‑4040‑LB. The UV/IR flame detector senses radiant energy in the short wave section of both the ultraviolet and infrared portions of the electromagnetic spectrum. The signals from both sensors are analysed for frequency, intensity and duration. Simultaneous detection of radiant energy in both the UV and IR sensors triggers an alarm signal. The UV sensor incorporates a special logic circuit that helps prevent false alarms caused by solar radiation.
Spectrex SP‑4040‑U & SP‑4040‑UB UV	UV Flame Detector	Spectrex SP‑4040‑UV Flame Detector detects hydrocarbon‑based fuel and gas fires, invisible hydrogen flames, and fires from hydrides, ammonia, Silane and other organics. The SP‑4040‑U (SP‑4040‑UB with Built‑in Test feature) is the most durable and weather resistant UV flame detector currently on the market. Its features include a heated window to eliminate condensation and icing; HART capabilities, for digital communications; lower power requirements; and a compact, lighter design. Note: This type of flame detector should not be exposed to UV radiation sources such as welding, sparks, and electric arcs as it will cause false alarms.
Spectrex SP‑4040‑R	Single IR Flame Detector	Spectrex SP‑4040‑R Single IR Flame Detector detects hydrocarbon‑ based fuel and gas fires using advanced flame analysis tools. The detector provides early warning of flaming fires working at 4.4 µm for maximum sensitivity, and immunity to false alarms from IR sources such as sunlight and IR projectors. The SP‑4040‑R is the most durable and weather resistant single IR flame detectors currently available. Its features include a heated window, to eliminate condensation and icing; HART capabilities, for digital communications; lower power requirements; and a compact, lighter design.
Spectrex SP‑2020‑MI1 & SP‑2020‑MI3	Compact Triple IR (Mini IR3) Flame Detector	Spectrex SP‑2020‑MI is an economical and compact Triple IR (IR3) Flame Detector in a rugged stainless steel housing. It is available in either general purpose non‑Ex approved, or intrinsically safe approved (EExia) format. The flame detector retains all the benefits of IR3 technology – long distance detection (up to 40 metres) along with highest immunity to false alarms.
Spectrex SP‑2020‑ML	Mini UV/IR Flame Detector	Spectrex low‑cost SP‑2020‑ML UV/IR Flame Detector has a compact, lightweight but rugged design for general purpose (non‑Ex approved) areas. It detects hydrocarbon fire at distances up to 15 metres. The SP‑2020‑ML flame detector provides a combination of UV and IR sensors and can detect hydrocarbon‑based fuel and gas fires, hydroxyl and hydrogen fires, as well as metal and inorganic fires. The UV sensor incorporates a special logic circuit that helps prevent false alarms caused by solar radiation. Simultaneous detection of radiant energy in both the UV and IR sensors triggers an alarm signal.