Fixed Gas Detectors
Our fixed gas detectors provide continuous protection. With over 20 years of experience in gas detection, Rockall Safety has become a trusted partner for businesses across the UK, delivering the best fixed gas detection systems for your application.
Our portfolio includes fixed gas detectors, which provide continuous, reliable detection of toxic, flammable, and oxygen-deficient atmospheres. We also supply flame detectors, designed to detect fires quickly and accurately, even in challenging environments. We also provide fully integrated control panels that allow for seamless monitoring, alarm management, and system control across your site.
Our team of engineers are located across the UK and are highly trained to install, commission, and service fixed gas detectors to the highest standards. Whether you operate in oil and gas, chemical processing, wastewater management, or construction, our engineers ensure your fixed detection system is correctly specified, installed, and fully functional.
Beyond installation, we provide ongoing servicing and maintenance to ensure your detectors remain accurate and compliant with safety regulations including the Health and Safety in the Workplace Act 1974.
Rockall Safety works with industry leading brands such as Teledyne, Crowcon, Honeywell, and MSA to bring you the best fixed gas detectors on the market. From sensors that detect flammable gases and oxygen levels to those monitoring toxic gases, our solutions are designed to provide reliable, real-time alerts.
What sets our fixed gas detection team apart is not just technical expertise, but approachability. Known throughout the industry for their professionalism and knowledge, they are here to answer any questions you may have, no matter how simple or complex.
If you have any questions regarding Fixed Gas Detectors, please contact us or call 02920 759 683.
Fixed Gas Detectors
Our fixed gas detectors provide continuous protection. With over 20 years of experience in gas detection, Rockall Safety has become a trusted partner for businesses across the UK, delivering the best fixed gas detection systems for your application.
Our portfolio includes fixed gas detectors, which provide continuous, reliable detection of toxic, flammable, and oxygen-deficient atmospheres. We also supply flame detectors, designed to detect fires quickly and accurately, even in challenging environments. We also provide fully integrated control panels that allow for seamless monitoring, alarm management, and system control across your site.
Our team of engineers are located across the UK and are highly trained to install, commission, and service fixed gas detectors to the highest standards. Whether you operate in oil and gas, chemical processing, wastewater management, or construction, our engineers ensure your fixed detection system is correctly specified, installed, and fully functional.
Beyond installation, we provide ongoing servicing and maintenance to ensure your detectors remain accurate and compliant with safety regulations including the Health and Safety in the Workplace Act 1974.
Rockall Safety works with industry leading brands such as Teledyne, Crowcon, Honeywell, and MSA to bring you the best fixed gas detectors on the market. From sensors that detect flammable gases and oxygen levels to those monitoring toxic gases, our solutions are designed to provide reliable, real-time alerts.
What sets our fixed gas detection team apart is not just technical expertise, but approachability. Known throughout the industry for their professionalism and knowledge, they are here to answer any questions you may have, no matter how simple or complex.
If you have any questions regarding Fixed Gas Detectors, please contact us or call 02920 759 683.
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Fixed Gas Detectors
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Flame Detectors
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Control Panels
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Refrigerant Gas Detectors
SKU: OPT-CAM-NNN
Honeywell OmniPoint Fixed Gas Detector
- Gas Detection Class Fixed
- ATEX PENDING
- Temperature -55°C to 75ºC (-67°F to 167°F)
- Power Consumption Normal 4.5 watts, Max 8.5 watts
- Output 3 channels of fully configurable 4 mA to 20 mA providing current sink, current source and isolated modes of operation to support up to 3 sensors simultaneously.
- Display 3 inch (76 mm) circular high resolution, full color, TFT display
- Brand Honeywell
View productSKU: Crowcon-FGard-H2
Crowcon FGard H2 Flame Detector
- Gas Detection Class Fixed
- ATEX ATEX
- Power Consumption 3 W minimum (without heater), 12 W maximum (with heater).
- Brand Crowcon
- Part Numbers FD-H2-A-M20 - Fgard H2 Flame Detector - Aluminium M20, FD-H2-A-M25 - Fgard H2 Flame Detector - Aluminium M25, FD-H2-A-NPT - Fgard H2 Flame Detector - Aluminium 3/4" NPT, FD-H2-SS-M20 - Fgard H2 Flame Detector - Stainless Steel M20, FD-H2-SS-M25 - Fgard H2 Flame Detector - Stainless Steel M25, FD-H2-SS-NPT - Fgard H2 Flame Detector - Stainless Steel 3/4" NPT
View productSKU: FD-IR3-A-NPT
Crowcon FGard IR3 Flame Detector
- Gas Detection Class Fixed
- ATEX ATEX
- Power Consumption 3 W minimum (without heater), 15 W at 32 Vdc with heater on maximum.
- Brand Crowcon
- Part Numbers FD-IR3-A-M20 - Fgard IR3 Flame Detector - Aluminium M20, FD-IR3-A-M25 - Fgard IR3 Flame Detector - Aluminium M25, FD-IR3-A-NPT - Fgard IR3 Flame Detector - Aluminium 3/4" NPT, FD-IR3-SS-M20 - Fgard IR3 Flame Detector - Stainless Steel M20, FD-IR3-SS-M25 - Fgard IR3 Flame Detector - Stainless Steel M25, FD-IR3-SS-NPT - Fgard IR3 Flame Detector - Stainless steel 3/4" NPT
View productSKU: FGARDIR3
Crowcon FGard UVIR Flame Detector
- Gas Detection Class Fixed
- ATEX ATEX
- Power Consumption 3 W minimum (without heater), 15 W maximum (with heater).
- Brand Crowcon
- Part Numbers FD-UVIR-A-M20 - Fgard UV/IR Flame Detector - Aluminium M20, FD-UVIR-A-M25 - Fgard UV/IR Flame Detector - Aluminium M25, FD-UVIR-A-NPT - Fgard UV/IR Flame Detector - Aluminium 3/4" NPT, FD-UVIR-SS-M20 - Fgard UV/IR Flame Detector - Stainless Steel M20, FD-UVIR-SS-M25 - Fgard UV/IR Flame Detector - Stainless Steel M25, FD-UVIR-SS-NPT - Fgard UV/IR Flame Detector - Stainless Steel 3/4" NPT
View product- BEST SELLER
SKU: GMS-BDL-1
Crowcon Gasmaster Control Panel
- Gas Detection Class Fixed
- ATEX Non ATEX
- Display LCD display
- Channels 4 channels
- Power Consumption 100-240Vac 50-60Hz or 20-30Vdc, 60W max
- Brand Crowcon
- Part Numbers 4 Channel, 1 mA & 0 mV modules, CE Label, Communication Port, 4 Channel, 0 mA & 2 mV modules, CE Label, Communication Port, 1 Channel, 2 mA & 1 mV modules, CE Label, Communication Port, 4 Channel, 1 mA & 1 mV modules, CE Label, Communication Port, 4 Channel, 0 mA & 3 mV modules, CE Label, Communication Port, 1 Channel, 2 mA & 2 mV modules, CE Label, Communication Port, 4 Channel, 1 mA & 2 mV modules, CE Label, Communication Port, 4 Channel, 0 mA & 4 mV modules, CE Label, Communication Port, 1 Channel, 3 mA & 0 mV modules, CE Label, Communication Port, 4 Channel, 1 mA & 3 mV modules, CE Label, Communication Port, 1 Channel, 3 mA & 1 mV modules, CE Label, Communication Port, 4 Channel, 2 mA & 0 mV modules, CE Label, Communication Port, 1 Channel, 4 mA & 0 mV modules, CE Label, Communication Port, 4 Channel, 2 mA & 1 mV modules, CE Label, Communication Port, 1 Channel, 0 mA & 0 mV modules, CE Label, Communications Port, 1 Channel, 0 mA & 1 mV modules, CE Label, Communication Port, 4 Channel, 2 mA & 2 mV modules, CE Label, Communication Port, 1 Channel, 1 mA & 0 mV modules, CE Label, Communications Port, 1 Channel, 0 mA & 2 mV modules, CE Label, Communication Port, 4 Channel, 3 mA & 0 mV modules, CE Label, Communication Port, 1 Channel, 1 mA & 1 mV modules, CE Label, Communications Port, 1 Channel, 0 mA & 3 mV modules, CE Label, Communication Port, 4 Channel, 3 mA & 1 mV modules, CE Label, Communication Port, 1 Channel, 1 mA & 2 mV modules, CE Label, Communications Port, 1 Channel, 0 mA & 4 mV modules, CE Label, Communication Port, 4 Channel, 4 mA & 0 mV modules, CE Label, Communication Port, 1 Channel, 1 mA & 3 mV modules, CE Label, Communications Port, 4 Channel, 0 mA & 0 mV modules, CE Label, Communication Port, 4 Channel, 0 mA & 1 mV modules, CE Label, Communication Port, 1 Channel, 2 mA & 0 mV modules, CE Label, Communication Port
View product SKU: FS24XP-AMGXX
Honeywell FS24X Plus Triple IR Flame Detector
- Gas Detection Class Fixed
- ATEX ATEX
- Power Consumption 1.8 Watts (Nominal) 2.4 Watts (Alarm) 12 Watts (max) = with heater ON 100% duty cycle.
- Gas Type Methanol - CH3OH, Propane - C3H8, Butane - C4H10, Diesel Fuel, Ethanol - C2H6O, Heptane - C7H16, Hydrogen - H, Jet Fuel / Kerosene, Methane - CH4
- Brand Honeywell
- Part Numbers FS24XP-SMGXM FS24X Plus - 3IR - SS - M25 kit includes marine mount and sunshade, FS24XP-ANGXX FS24X Plus - 3IR - AL - 3/4" NPT kit includes mount and sunshade, FS24XP-AMGXX FS24X Plus - 3IR - AL - M25 kit includes mount and sunshade, FS24XP-SNGXX FS24X Plus - 3IR - SS - 3/4" NPT kit includes mount and sunshade, FS24XP-SMGXX FS24X Plus - 3IR - SS - M25 kit includes mount and sunshade, FS24XP-ANGXM FS24X Plus - 3IR - AL - 3/4" NPT kit includes marine mount and sunshade, FS24XP-AMGXM FS24X Plus - 3IR - AL - M25 kit includes marine mount and sunshade, FS24XP-SNGXM FS24X Plus - 3IR - SS - 3/4" NPT kit includes marine mount and sunshade
View productSKU: FSL100-UV, FSL100-UVIR and FSL100-IR3
Honeywell FSL100 Flame Detector
- Gas Detection Class Fixed
- ATEX ATEX
- Power Consumption 10-28 VDC (12-24 VDC nominal)
- Brand Honeywell
- Part Numbers FSL100-UV UV flame detector. Suitable for ATEX zone 2/22; FM 3611 Class 1,2&3 Div2 EN54-10 (HIGH sensitivity) certificate. FM3260 approval. Red Housing, FSL100-UV-W UV flame detector. Suitable for ATEX zone 2/22; FM 3611 Class 1,2&3 Div2 EN54-10 (HIGH sensitivity) certificate FM3260 approval. White Housing., FSL100-UVIR UV/IR flame detector. Suitable for ATEX zone 2/22; FM 3611 Class 1,2&3 Div2 EN54-10 (HIGH sensitivity) certificate. FM3260 approval. Red Housing., FSL100-UVIR-W UV/IR flame detector. Suitable for ATEX zone 2/22; FM 3611 Class 1,2&3 Div2 EN54-10 (HIGH sensitivity) certificate FM3260 approval. White Housing., FSL100-IR3 Triple IR flame detector. Suitable for ATEX zone 2/22; FM 3611 Class 1,2&3 Div2 EN54-10 (HIGH sensitivity) certificate. FM3260 approval. Red Housing., FSL100-IR3-W Triple IR flame detector. Suitable for ATEX zone 2/22; FM 3611 Class 1,2&3 Div2 EN54-10 (HIGH sensitivity) certificate. FM3260 approval. White Housing.
View productSKU: DF-TV7
Teledyne DF-TV7 IR3 Fixed Flame Detector
- Gas Detection Class Fixed
- ATEX ATEX
- Power Consumption 2W normal; 4W during test
- Brand Teledyne
View productSKU: DF-TV7-V/IR2
Teledyne MultiFlame DF-TV7-V/IR2 Flame Detector
- Gas Detection Class Fixed
- ATEX ATEX
- Power Consumption 2W normal, 4w during test
- Brand Teledyne
View productSKU: SG50-F - UV/IR (V)
Teledyne Spyglass SG50 – UV/IR Optical Flame Detector
- Gas Detection Class Fixed
- ATEX ATEX
- Brand Teledyne
View productSKU: SG50-F-IR3-H2-V
Teledyne Spyglass™ IR3 – H2 Flame Detector
- Gas Detection Class Fixed
- ATEX ATEX
- Brand Teledyne
View productSKU: SG50-F-IR3-V
Teledyne Spyglass™ IR3 – Optical Flame Detector
- Gas Detection Class Fixed
- ATEX ATEX
- Brand Teledyne
View productSKU: SMART 3G-C3
Crowcon SMART 3G-C3 Fixed Gas Detector
- Gas Detection Class Fixed
- ATEX ATEX
- Temperature -40 / +60°C
- Output 4-20 mA, 1 or 3 relay boards, RS485
- Brand Crowcon
- Part Numbers Crowcon SMART 3G-C3 - Flammable gas, catalytic sensor, Petrol Vapours 0-100% LEL, Crowcon Smart 3G-C4 - R417a, Infrared, 0-2000 ppm, Crowcon SMART 3G-C3 - Toxic gas, electrochemical sensor, Nitric Oxide 0-100ppm, Crowcon Smart 3G-C6 - SF6, Infrared, 0-2000 ppm, Crowcon SMART 3G-C3 - Flammable gas, catalytic sensor, Hydrogen 0-100% LEL, Crowcon Smart 3G-C4 - R448, Infrared, 0-2000 ppm, Crowcon SMART 3G-C3 - Toxic gas, electrochemical sensor, Hydrogen 0-2000ppm, Crowcon Smart 3G-C1 - R125, Infrared, 0-2000 ppm, Crowcon SMART 3G-C3 - Flammable gas, Infrared sensor, Methane 0-100% LEL, Crowcon SMART 3G-C3 - Toxic gas, electrochemical sensor, Hydrogen 0-3000ppm, Crowcon Smart 3G-C1 - R1234yf, Infrared, 0-2000 ppm, Crowcon SMART 3G-C3 - Flammable gas, Infrared sensor, Propane 0-100% LEL, Crowcon Smart 3G-C1 - R1234ze, Infrared, 0-2000 ppm, Crowcon SMART 3G-C3 - Flammable gas, Infrared sensor, Butane 0-100% LEL, Crowcon Smart 3G-C3 - R454b, Infared, 0-100% LEL, Crowcon Smart 3G-C4 - R404a, Infrared, 0-2000 ppm, Crowcon SMART 3G-C3 - Flammable gas, Infrared sensor, LPG 0-100% LEL, Crowcon Smart 3G-C3 - R454c, Infrared, 0-100% LEL, Crowcon Smart 3G-C4 - R407a, Infrared, 0-2000 ppm, Crowcon SMART 3G-C3 - Toxic gas, electrochemical sensor, Oxygen 0-25% Vol, Crowcon Smart 3G-C3 - R32, Infrared, 0-100% LEL, Crowcon SMART 3G-C3 - Flammable gas, catalytic sensor, Methane 0-100% LEL, Crowcon Smart 3G-C4 - R407f, Infrared, 0-2000 ppm, Crowcon SMART 3G-C3 - Toxic gas, electrochemical sensor, CO 0-500ppm, Crowcon Smart 3G-C3 - R1234yf, Infrared, 0-100% LEL, Crowcon SMART 3G-C3 - Flammable gas, catalytic sensor, LPG 0-100% LEL, Crowcon Smart 3G-C4 - R449, Infrared, 0-2000 ppm, Crowcon SMART 3G-C3 - Toxic gas, electrochemical sensor, Ethylene 0-200ppm, Crowcon Smart 3G-C3 - R1234ze, Infrared, 0-100% LEL, Crowcon SMART 3G-C3 - Flammable gas, catalytic sensor, Propane 0-100% LEL, Crowcon Smart 3G-C5 - R507a, Infrared, 0-2000 ppm, Crowcon SMART 3G-C3 - Toxic gas, electrochemical sensor, Ammonia 0-100ppm, Crowcon Smart 3G-C3 - R32, Infrared, 0-2000 ppm, Crowcon SMART 3G-C3 - Flammable gas, catalytic sensor, Butane 0-100% LEL, Crowcon Smart 3G-C4 - R410a, Infrared, 0-2000 ppm, Crowcon SMART 3G-C3 - Toxic gas, electrochemical sensor, H2S 0-50ppm, Crowcon Smart 3G-C1 - R134a, Infrared, 0-2000 ppm
View productSKU: SMART 3G-D2
Crowcon SMART 3G-D2 Fixed Gas Detector
- Gas Detection Class Fixed
- ATEX ATEX
- Temperature -40 / +60°C
- Gas Type R407F, Ethane - C2H6, R1234YF, R449A, Cyclopentane, Ethanol - C2H6O, R1234ZE, R507A, Dimethyl Ether, Heptane - C7H16, R125, R410A, Ethyl Ether, Hydrogen - H, R134A, R417A, Hydrogen Sulfide - H2S, R32, Ethylene oxide - ETO, Ethyl Acetate, R448, R404A, Cyclohexane, Acetylene - C2H2, R454B, Ammonia - NH3, SF6, Ethylene, Benzene - C6H6, R152A, Butadiene, Butane - C4H10, R407A, Acetic Acid, Carbon Monoxide - CO
- Output 4-20 mA, 1 or 3 relay boards, RS485
- Brand Crowcon
- Part Numbers SMART 3G-D2, Flammable Cat Sensor, Methane 0-100% LEL, SMART 3G-D2, Flammable Cat Sensor, LPG 0-100% LEL, SMART 3G-D2, Flammable Cat Sensor, Butane 0-100% LEL, SMART 3G-D2, Flammable Cat Sensor, Propane 0-100% LEL, SMART 3G-D2, Flammable Cat Sensor, Petrol Vapours 0-100% LEL, SMART 3G-D2, Flammable Cat Sensor, Acetone 0-100% LEL, SMART 3G-D2, Flammable Cat Sensor, Hydrogen 0-100% LEL
View productSKU: SMART P
Crowcon SMART P Fixed Gas Detector
- Gas Detection Class Fixed
- ATEX Non ATEX
- Temperature -20 / +50°C
- Output RS485
- Power Consumption 12-24 Vdc
- Gas Type Sulphur Dioxide, Carbon Monoxide - CO, Petrol Vapours
- Brand Crowcon
- Part Numbers Crowcon SMART P, RS-485, CO 0-300ppm, Crowcon SMART P, RS-485, NO2 0-30ppm
View productSKU: S-MS-MED
Crowcon SMART S-MS MED Fixed Gas Detector
- Gas Detection Class Fixed
- ATEX ATEX
- Temperature -40 / +60°C
- Output 4-20 mA, RS485, 3 relay board
- Power Consumption 12-24 Vdc
- Gas Type Butane - C4H10, Methane - CH4, Pentane - C5H12, Propane - C3H8
- Brand Crowcon
- Part Numbers Smart S-MS MED Transmitter, RS-485, 4-20 mA, Relay Card. Propane Cat 0-100% LEL., Smart S-MS MED Transmitter, RS-485, 4-20 mA, Relay Card. Butane Cat 0-100% LEL., Smart S-MS MED Transmitter, RS-485, 4-20 mA, Relay Card. Pentane Cat 0-100% LEL., Smart S-MS MED Transmitter, RS-485, 4-20 mA, Relay Card. Hydrogen Cat 0-100% LEL., Smart S-MS MED Transmitter, RS-485, 4-20 mA, Relay Card. Petrol Vapours Cat 0-100% LEL., Smart S-MS MED Transmitter, RS-485, 4-20 mA, Relay Card. Methane IR 0-100% LEL., Smart S-MS MED Transmitter, RS-485, 4-20 mA, Relay Card. Propane IR 0-100% LEL., Smart S-MS MED Transmitter, RS-485, 4-20 mA, Relay Card. Butane IR 0-100% LEL., Smart S-MS MED Transmitter, RS-485, 4-20 mA, Relay Card. Pentane IR 0-100% LEL., Smart S-MS MED Transmitter, RS-485, 4-20 mA, Relay Card. Methane Cat 0-100% LEL.
View product
FAQs
A fixed gas detector is fixed to the wall and continuously monitors hazardous gases in a certain area. Fixed gas detectors are designed to provide ongoing protection in areas such as chemical plants, oil refineries, wastewater facilities, and confined spaces. They can detect toxic gases, combustible gases, and oxygen levels, triggering alarms or alerting control systems when gas levels exceed set limits.
Common gases include hydrogen sulphide (H₂S), carbon monoxide (CO), oxygen (O₂), flammable gases such as methane and propane, ammonia (NH₃), chlorine (Cl₂), and volatile organic compounds (VOCs).
The main difference is that fixed gas detectors are permanently installed to continuously monitor an area, while portable gas detectors are wearable devices used to detect gases within the breathing zone. Fixed detectors are for ongoing hazard monitoring in high risk areas, such as industrial plants, tanks, or confined spaces, and can be linked to control panels. Portable detectors are more flexible and used for spot checks or temporary monitoring but do not provide continuous area wide protection.
Fixed gas detectors require regular maintenance and calibration to ensure they provide accurate readings. Most manufacturers recommend calibration every six to twelve months, depending on usage, the type of gas monitored, and environmental conditions. Routine bump testing or functional checks should be carried out periodically to confirm the detectors are responding correctly to gas exposure.
Rockall Safety have a range of service plans available for fixed gas detector customers, contact us for more information.
Yes, fixed gas detectors used in hazardous areas should be ATEX or IECEx certified. These certifications indicate that the detector is safe for use in explosive atmospheres, such as oil and gas production sites, chemical plants, and other high-risk environments. For more information on ATEX environments, click here: Fixed gas detection and hazardous zones
Yes, most fixed gas detectors and flame detectors can be integrated with building management systems, fire alarms, and emergency shutdown systems. This is important for large industrial sites, where early detection and coordinated response can prevent accidents and minimise downtime.
A flame detector is a specialised fixed detector designed to sense the presence of flames. Flame detectors use optical sensors to detect ultraviolet (UV), infrared (IR), or a combination of both emissions from flames. They are installed in oil and gas facilities, chemical plants, and industrial sites where fire hazards are high.
A control panel is the central hub for monitoring and managing multiple fixed gas detectors. The control panel receives signals from gas detectors, displays real time readings, logs events, and can trigger alarms, ventilation systems, or emergency shutdowns.