Spectrex SharpEye™ 40/40 C & D Series Flame Detectors

The Spectrex SharpEye next-generation 40/40 C & D Series provides advanced optical flame detection for industrial and commercial applications where fast response, long-range detection, false alarm immunity, and hazardous area reliability are critical. The series includes QuadSense™ triple infrared (IR3) models and ultraviolet/infrared (UV/IR) models, allowing users to select the detection technology best suited for hydrocarbon fires, hydrogen fire detection, and other hazardous flame sources.

The 40/40C Series is designed for dependable flame detection with a wide operating temperature range and long-distance hydrocarbon fire detection up to 215 ft. (65 m). The 40/40D Series is built for more demanding applications, offering extended detection up to 300 ft. (90 m), ultra-fast response options, enhanced temperature performance, and stainless steel enclosure availability.

Both series are engineered for flexible integration into new or existing fire and gas detection systems. Configuration, monitoring, and maintenance functions can be supported through HART® or RS-485 Modbus® communication, while multiple output options help support compatibility with common plant safety systems.

Westech Industrial offers the Spectrex SharpEye next-generation 40/40 C & D Series in AB, BC, and SK. Our team can support product selection, application review, service requirements, and integration into custom fabricated fire and gas panels, analyzer shelters, safety systems, and site-specific industrial packages.

Spectrex SharpEye™ 40/40 C & D Series Flame Detectors

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Description

Multiple Flame Detection Technologies

Available configurations include QuadSense™ triple infrared (IR3), QuadSense™ IR3 with hydrogen fire detection, UV/IR with hydrogen fire detection, and UV/IR for hydrocarbon-based fuel and gas fires.

Long-Range Flame Detection

The 40/40C Series detects hydrocarbon-based fuel and gas fires up to 215 ft. (65 m), while the 40/40D Series extends detection up to 300 ft. (90 m) for select models.

Fast and Ultra-Fast Response Options

The 40/40C Series provides typical response in under five seconds. The 40/40D Series includes ultra-fast response capabilities, including UV/IR models designed for fire detection in under 20 milliseconds.

Hydrogen Fire Detection Options

Hydrogen detection is available on the 40/40C-M (QuadSense), 40/40C-LB (UV/IR), 40/40D-M (QuadSense), and 40/40D-LB (UV/IR) configurations.

False Alarm Immunity

Proven IR3 and UV/IR technologies help improve flame detection reliability while reducing unwanted alarms in challenging industrial environments.

Built-In Testing and Event Logging

Integrated built-in test functionality continuously validates optical integrity and electronic circuitry, while the internal event recorder helps support maintenance review.

Flexible Outputs and Communication

Output options include relays, analog voltage, stepped 0–20 mA, HART® communication, and RS-485 Modbus® communication.

Heated Optics for Harsh Conditions

Heated optics help maintain detector performance in environments where condensation, frost, or difficult weather conditions may affect optical visibility.

Hazardous Area Approval Options

Approval options include INMETRO, USA and Canada Explosion-Proof, ATEX/IECEx/UKCA, EAC CU TR, and Korea Flameproof configurations.

Rugged Industrial Construction

The 40/40C Series is available with a heavy-duty copper-free aluminum enclosure. The 40/40D Series is available with either electropolished stainless steel 316 or heavy-duty copper-free aluminum enclosure options.

Applications

The Spectrex SharpEye next-generation 40/40 C & D Series is suitable for industrial locations where early flame detection is essential to protect personnel, assets, and process operations. Typical applications include:

  • Oil and gas onshore and offshore installations
  • Pipelines, storage tank farms, and fuel processing facilities
  • Chemical and petrochemical plants
  • Power generation facilities
  • Hydrogenation processes
  • Hydrogen fuel cell applications
  • Vehicle battery charging stations
  • Fertilizer plants
  • Explosives and munitions facilities
  • Hazardous materials storage areas
  • Aerospace and automotive facilities
  • Pharmaceutical and printing industries
  • Warehouses and light industrial environments
  • Food processing facilities
  • Waste management and waste disposal facilities
  • Mining applications for select 40/40D configurations

Documents

Spectrex_SharpEye 40/40 C Series Flame Detector_Data Sheet_June2026_Westech.pdf

Spectrex_SharpEye 40/40 D Series Flame Detector_Data Sheet_June2026_Westech.pdf

Spectrex_4040_Manual_June2026_Westech.pdf

Spectrex-sharpeye-40-40d-m-ultra-fast-multi-ir-quad-sense-en_Datasheet_June2021_Westech.pdf

Spectrex-sharpeye-40-40d-l4b-ultra-fast-uv-ir-flame-detector-en_Datasheet_June2021_Westech.pdf

Spectrex_sharpeye-40-40c-i-multispectrum-quad-sense_Datasheet-en-June2021_Westech.pdf

Spectrex_sharpeye-40-40c-40-40d-quick-start-guide-en_May2026_Westech.pdf

Spectrex-sharpeye-40-40d-lb-ultra-fast-uv-ir-en_Datasheet_May2026_Westech.pdf

Spectrex-sharpeye-40-40c-l4b-integrated-uv-ir-en-Datasheet_May2026_Westech.pdf

Spectrex-sharpeye-40-40d-i-ultra-fast-multispectrum-quad-sense-en_Datasheet_June2021_Westech.pdf

Spectrex-sharpeye-40-40c-m-multispectrum-quad-sense-en_Datasheet_June2021_Westech.pdf

Spectrex-sharpeye-40-40c-lb-integrated-uv-ir-en_Datasheet_May2026_Westech.pdf

Manufacturer info

Spectrex fire detection products and Open Path Gas Detectors are designed to the highest safety requirements for high risk industries and commercial applications. Fire detection is achieved by the SharpEye 40/40 Series Optical Flame Detectors, including Triple infrared (IR3), Multi IR, UV/IR, UV, IR and CCTV models for Ex hazardous areas and safe area compact Mini designs. SafEye Open Path Gas Detectors monitor distances from <1 meter up to 200 meters with SIL2 high reliability units and duct mount options for turbine / air intake ducts. Spectrex Detectors are SIL2 approved and 3rd party certified to the latest applicable International Standards for Safety, Reliability, Quality and Performance.

https://www.spectrex.net/

SPECS

Product Series:
Spectrex SharpEye next-generation 40/40C and 40/40D Flame Detectors.
Detection Technologies:
QuadSense™ triple infrared (IR3), QuadSense™ triple infrared (IR3) with hydrogen fire detection, ultraviolet/infrared (UV/IR) with hydrogen fire detection, and ultraviolet/infrared (UV/IR).
40/40C Model Options:
40/40C-I QuadSense™ triple infrared (IR3); 40/40C-M QuadSense™ triple infrared (IR3) with hydrogen fire detection; 40/40C-LB ultraviolet/infrared (UV/IR) with hydrogen fire detection; 40/40C-L4B ultraviolet/infrared (UV/IR).
40/40D Model Options:
40/40D-I QuadSense™ triple infrared (IR3); 40/40D-M QuadSense™ triple infrared (IR3) with hydrogen fire detection; 40/40D-LB ultraviolet/infrared (UV/IR) with hydrogen fire detection; 40/40D-L4B ultraviolet/infrared (UV/IR).
Detection Range:
40/40C Series hydrocarbon-based fuel and gas fire detection up to 215 ft. (65 m); 40/40D Series hydrocarbon-based fuel and gas fire detection up to 300 ft. (90 m).
Hydrogen Fire Detection:
Available on 40/40C-M, 40/40C-LB, 40/40D-M, and 40/40D-LB configurations.
40/40C Response Time:
Standard response typically under 5 seconds.
40/40D Response Time:
For 40/40D-I and 40/40D-M models, standard response is typically <2 seconds at 131 ft. (40 m) and 10 seconds at 300 ft. (90 m); ultra-fast response is typically <1 second at 100 ft. (30 m); high-speed response for explosion is 50 ms for a 1 ft. (0.3 m) diameter sphere LPG/air mixture explosion at 66 ft. (20 m) via analog voltage output. For 40/40D-LB and 40/40D-L4B models, standard response is typically 5 seconds at 93 ft. (28 m); ultra-fast response is 20 ms for flash fire pan fire from 10 ft. (3 m) via analog voltage output; high-speed response for explosion is 50 ms for a 1 ft. (0.3 m) diameter sphere LPG/air mixture explosion at 32.8 ft. (10 m) via analog voltage output.
Field of View:
Horizontal 100° and vertical 95° for select configurations; hydrogen detection field of view is horizontal 90° and vertical 90°; field of view for other fuels on select models is horizontal 80° and vertical 80°.
Operating Voltage:
24 Vdc nominal (18 to 32 Vdc).
Cable Entries:
2 x ¾-in.–14 NPT conduits or 2 x M25 x 1.5 mm ISO.
Electrical Interface:
17 terminals with one wiring option.
Outputs:
Alarm, fault, and auxiliary relays; analog output; stepped 0–20 mA; HART® protocol; RS-485 Modbus® compatible communication.
Relay Rating:
SPDT volt-free contacts rated 2 A at 30 Vdc.
Analog Output Default:
Analog port malfunction 0 V under 0.5 V; normal 2 V ± 0.3 V; alarm/explosion 5 V ± 0.3 V.
0–20 mA Stepped Output Default:
Fault 0 ± 1 mA; built-in test fault 2 mA ± 0.3 mA; normal 4 mA ± 0.3 mA; warning 16 mA ± 0.3 mA; alarm 20 mA ± 0.3 mA.
Communication:
HART® communication on the 0–20 analog current using Frequency-Shift Keying; RS-485 Modbus® compatible communication for computer-controlled installations.
40/40C Temperature Range:
Operating and storage temperature from –40 to +167 °F (–40 to +75 °C).
40/40D Temperature Range:
Operating and storage temperature from –76 to +185 °F (–60 to +85 °C).
Humidity:
Non-condensing relative humidity up to 100%.
40/40C Enclosure:
Heavy-duty copper-free aluminum, less than 1%, polyurethane painted.
40/40D Enclosure:
Electropolished stainless steel 316 or heavy-duty copper-free aluminum, less than 1%, polyurethane painted.
Mounting:
Electropolished stainless steel 316 tilt mount option.
Dimensions:
Detector 4 x 4.6 x 6.18 in. (100.6 x 117 x 155 mm).
Weight:
40/40C aluminum detector 2.8 lb. (1.3 kg); 40/40D stainless steel detector 6.3 lb. (2.9 kg); 40/40D aluminum detector 2.8 lb. (1.3 kg); tilt mount 2.5 lb. (1.1 kg).
Ingress Protection:
IP66 and IP68 per EN60529; NEMA® 250 6P.
Approval Options:
INMETRO, USA and Canada Explosion-Proof, ATEX/IECEx/UKCA, EAC CU TR, and Korea Flameproof.
Accessories:
FS-1100 flame simulator for 40/40C-I and 40/40D-I models; FS-1200 flame simulator for 40/40C-LB, 40/40C-L4B, 40/40D-LB, and 40/40D-L4B models; FS-1400 flame simulator for 40/40C-M and 40/40D-M models; tilt mount; duct mount; pole mount assemblies; USB RS-485 harness kit; air shield; protective covers; field of view limiter.

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PRODUCT FAQ's

What is the difference between the Spectrex 40/40C and 40/40D Series?
The 40/40C Series is designed for reliable flame detection with detection up to 215 ft. (65 m) and an operating range of –40 to +167 °F (–40 to +75 °C). The 40/40D Series offers longer detection distances up to 300 ft. (90 m), faster response options, a wider operating temperature range of –76 to +185 °F (–60 to +85 °C), and stainless steel enclosure availability.
Which Spectrex 40/40 models detect hydrogen flames?
Hydrogen fire detection is available on the 40/40C-M, 40/40C-LB, 40/40D-M, and 40/40D-LB configurations. The correct model depends on the application, hazard type, detection distance, and required response time.
What output options are available for the SharpEye 40/40 C & D Series?
The detectors support relay outputs, analog voltage output, stepped 0–20 mA output, HART® communication, and RS-485 Modbus® communication. This makes them suitable for integration into a wide range of fire and gas detection systems and plant safety infrastructure.
Can the Spectrex SharpEye 40/40 Series be used in hazardous areas?
Yes. Available approval options include INMETRO, USA and Canada Explosion-Proof, ATEX/IECEx/UKCA, EAC CU TR, and Korea Flameproof configurations. Approval requirements should be confirmed based on the specific model, enclosure, and installation location.
Does Westech Industrial support Spectrex flame detector selection?
Yes. Westech Industrial can help review the application, detection requirements, hazardous area needs, output requirements, and installation environment to help select the appropriate Spectrex SharpEye 40/40 configuration.
Can Westech integrate Spectrex 40/40 detectors into custom fire and gas systems?
Yes. Westech Industrial can support custom fabricated fire and gas panels, safety systems, analyzer shelters, and integrated industrial packages that incorporate Spectrex flame detectors alongside other site-required components.
Are flame simulators available for the 40/40 C & D Series?
Yes. Flame simulator options include the FS-1100 for IR3 models, the FS-1200 for UV/IR LB and L4B models, and the FS-1400 for M models with hydrogen fire detection.
Where is the Spectrex SharpEye 40/40 C & D Series available through Westech Industrial?
The Spectrex SharpEye next-generation 40/40 C & D Series is available through Westech Industrial in Alberta, British Columbia, and Saskatchewan.