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.
Thorne & Derrick International are suppliers 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 – contact us to discuss your requirements, UK and Export sales.
Spectrex Quick Quote
Thorne & Derrick Sales Team aim to respond to all UK and international enquiries with a competitive Spectrex quotation within 24 hours.
Flame Detector Product Range
➡ The following table provides an overview of the Spectrex range of flame detectors:
|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.
Flame Detector Selection Guide
|Propellants (black powder)||1||3||2||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
Flame Detector Model & Specification
|Flame Detector Description|
|SP-4040-U* SP-4040-UB||UV||15||3 sec||UV flame detector for indoor applications, detects organic and inorganic flames|
|SP-4040-L* SP-4040-LB||UV/IR||15||5 sec||Dual UV/IR for flame detection of organic and inorganic flames for indoor and outdoor applications|
|SP-4040-R||IR||15||5 sec||Single IR flame detector for hydrocarbon fires for indoor applications|
|SP-4040-I**||Triple IR (IR3)||6560||5 sec||Triple IR (IR3) offers two to three times the flame detection distance of single IR or UV/ IR detectors and the highest immunity to false alarms. This flame detector includes heated optics, HART and complies with SIL-2|
|SP-4040-MSS||Multi IR||HCs – 65|
H2 – 30
|5 sec||Special design for the detection of invisible hydrogen flames and hydrocarbon fires|
|SP-2020-CTIPS||CCTV – IR3||60 & video 30||5 sec||CCTV flame detector is a Triple IR (IR3) detector with a video colour camera|
|SP-2020-MI1 SP-2020-MI3||Triple IR (IR3)||10 – 402.5 – 10||5 sec||Triple IR (IR3) performance in a compact design with 80% less power consumption|
|SP-2020-ML||UV/IR||15||5 sec||Special compact design UV/IR flame detector for industrial applications|
Comparison Table For Types Of Flame Detector
Each of the Spectrex flame detector ranges uses one or more of the Ultraviolet (UV) and/or Infrared (IR) techniques. However, each detector is recommended only for specific applications, usually determined by evaluating to what extent false alarms could create problems.
|Flame Detector Type||Applications||Advantages||Disadvantages|
|Triple IR (IR3)||Hydrocarbon fires. Indoors and outdoors.||Moderate speed|
High immunity to false alarms
Longer detection range. Unaffected by solar radiation
|Affected by IR sources only at short range in certain rare fire scenarios.|
|Multi IR||Hydrocarbon and Hydrogen fires. Indoors and outdoors.||As IR3, but with hydrocarbon and hydrogen fire detection.||Affected by IR sources only at short range in certain rare fire scenarios.|
|Hydrogen (IR3)||Hydrogen fires only. Indoors and outdoors.||Detects invisible hydrogen flames. Longer detection range.|
High immunity to false alarms. Unaffected by solar radiation
|Not to be used for Hydrocarbon fire detection.|
|Dual Band UV/IR||Hydrocarbon, Hydrogen, Silane, Ammonia, other hydrogen-based fuel fires and Metal fires. Indoors and outdoors.||Moderate speed|
Moderate sensitivity. Low false alarm rate. Unaffected by solar radiation
|Affected by specific UV/IR ratio created by false stimuli.Blinded by thick smoke, vapours, grease and oil deposits on the detector window.|
|Single I (IR)||Hydrocarbon fires. Indoors.||Moderate speed|
Unaffected by solar radiation. Low cost detector.
|Subject to false alarms (in the presence of flickering IR sources).|
|Single Ultraviolet (UV)||Hydrocarbon, Hydrogen, Silane, Ammonia, other hydrogen-based fuel fires and Metal fires. Indoors.||High speed|
Unaffected by solar radiation
Unaffected by hot objects. Low cost detector.
|Subject to false alarms from UV sources (arc welding, electrical sparks, halogen lamps). Blinded by thick smoke, vapours, grease and oil deposits on the detector window.|
Emerson Process Management Acquisition With Spectrex
In 2015 Spectrex were acquired by Emerson Process Management. The acquisition has strengthened Emerson’s product offering as they now have a comprehensive line of flame, gas and ultrasonic leak detector solutions used for safety monitoring in the industry.
➡ T&D Sales Team are able to support the specification and supply of their flammable and toxic gas detectors. Additionally, T&D are CompEx Certificated and competent in understanding hazardous area classifications and site requirements for the sale of explosion and flameproof equipment.
Fire & Gas Detection Systems
Industrial, Explosive Atmospheres & Hazardous Area Locations
Hazardous area 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 flame and gas detectors.
Fire and Gas Systems (F&G) are specified to protect plant and from hazardous conditions. By monitoring areas where a fire or build-up of a potentially flammable gas may occur, the Fire and Gas Systems (F&G) can detect hazardous events, alert personnel and initiate prompt actions in order to minimise the consequences of a critical event.
Detecting toxic and flammable gases requires the detectors to be classified and certified according to the specific IECEx or ATEX standard – contact us to discuss your portable and fixed gas detection requirements from the Crowcon range of gas monitor and detecting devices. The MEDC range of call points are designed for the purpose of raising a manual alarm once verification of a fire or emergency condition exists, by operating the push button or break glass the alarm signal can be raised in hazardous area locations.
Thorne & Derrick distribute Hazardous Area Fire & Gas Detection System Products including Explosion Proof Warning Systems – a comprehensive range of ATEX & IECEx certified products: intrinsically safe, flameproof and explosion proof non-sparking audible and visual signalling devices including alarm sounders, sirens, bells and horns, loudspeakers and beacons.
We supply Linear Heat Detection Cables (LHDC) from Patol – these heat detection cables are designed to provide early detection of fire and overheating in circumstances where other forms of detection would not be viable, either due to inability to sustain the environmental requirements or through prohibitive costs.
Explosion Proof & Hazardous Area Electrical Equipment
EXPERTS IN EQUIPMENT FOR EXPLOSIVE ATMOSPHERES
Thorne & Derrick are leaders in the development and distribution of ATEX & IECEx Product Innovations that deliver significant improvements to clients plant, people and operational safety in the explosive atmosphere industries.
Your proactive problem solvers experienced in succession planning for the replacement of obsolete, non-conformant and legacy equipment in hazardous areas.
Your first-choice provider of innovative and competitive solutions to ensure ATEX & IECEx Compliance for Hazardous Area Electrical, HVAC & Process Instrumentation Equipment to UK and international projects.
Panels | Plugs | Isolators | Enclosures | Lighting | Control Stations | Motor Starters | Call Points | Heat Trace | Gas Detection | Flame Detection | Process Instrumentation | Process Heating | Fans | Security Locks