T&D – Suppliers of Crowcon Gas Detectors
T&D, the specialist distributor of Gas Detection, Detectors & Monitoring Equipment for CH4 gas detection.
Watch, listen and learn how Crowcon, CH4 gas detection specialists, protect people and plant from the gas risks posed by flammable and toxic gas.
T&D are Crowcon distributors – market leading fixed and portable gas detectors and monitors for flammable and toxic gases, including ATEX Certified equipment
CH4 Methane Gas Detection : Crowcon are market leading manufacturers of Portable and Fixed Gas Detection Equipment
Unmanned platforms or storage areas are commonplace in the offshore oil and gas industry – the offshore platforms are continuously monitored by fixed gas detection equipment.
Laser-based gas detection equipment can identify fugitive leaks at a safe distance so workers know it is safe before they board an unmanned FPSO. Crowcon are industry specialists at methane gas detection for both onshore and offshore hazardous area working environments.
Crowcon Laser Methane Mini Green
Methane gas is commonly used in chemical industries and is used to refine petrochemicals. It is also used as a fuel and is burned in gas turbines or steam generators to produce electricity. Methane is widely used domestically for heating and cooking in homes (but you knew that didn’t you).
Methane is the main component of Liquefied Natural Gas (LNG) and Compressed Natural Gas (CNG) and is generated by the decomposition of biodegradable solid waste as well as animal and human waste. It is therefore commonly present in landfill sites and sewage treatment works.
“Trash To Treasure” : BMW convert landfill methane to hydrogen as part of their “gas-to-energy” policy. Image BMW.
Methane is not generally considered a toxic gas, however it is extremely flammable even in low concentrations when mixed with other chemicals – methane is also an asphyxiant as it will displace oxygen and this is particularly dangerous in confined spaces.
In order to create a fire/explosion, you need three things, 1) oxygen 2) ignition source and 3) a fuel. Take away the
Fire Triangle
oxygen and you remove the risk of explosion, in contrast high levels of oxygen will cause fuels to burn faster and more vigorously. For an explosive atmosphere to exist, a certain ratio of oxygen and fuel must exist. The ratio differs depending on the fuel. In the gas detection industry, such ratios are known as lower explosion limits (LEL) and upper explosion limits. (UEL)
LEL is defined as “the minimum concentration of a particular combustible gas necessary to support its combustion in air.” Concentrations below this level will not burn. The UEL is defined as “Highest concentration (percentage) of a gas or a vapor in air capable of producing a flash of fire in presence of an ignition source. The range between LEL and UEL is referred to as the flammable range and as the name suggests is when fire/explosions will occur.
Methane Lower & Upper Explosive Limits
As can be seen from the table, the LEL for methane is 5% and UEL is 15%. Concentrations of 9% are thought to be the most volatile. It may sound strange but concentrations above 15% will not be explosive as the air is too saturated with Methane. However this is when asphyxiation can be just as hazardous.
Asphyxiation becomes a risk when there are high concentrations of methane. This is because the methane displaces the oxygen. We need approximately 18% oxygen to breath, levels below 16% can be dangerous and levels below 10% can cause immediate loss of consciousness and inevitably death. Working in confined spaces can be extremely dangerous if exposure to methane (or any other gas for that matter) is considered a risk.
The following table provides an overview of the Crowcon Gas Detectors available for detecting methane gas – for expert technical support and product selection guidance please call T&D Sales Engineers.
 Crowcon Xgard INFO |
 Crowcon Flamgard Plus INFO |
 Crowcon IRMax INFO |
 Crowcon IREX INFO |
 Crowcon Gasman INFO |
 Crowcon Tetra 3 INFO |
 Crowcon GasPro INFO |
 Crowcon Tetra INFO |
 Crowcon Triple Plus+ INFO |
 Crowcon Detective+ INFO |
 Crowcon Laser Methane Mini INFO |
 Crowcon Xsafe INFO |
 Crowcon Open Path Gas Detectors INFO |
 Crowcon Gas-Pro PID INFO |
Crowcon Hazardous Area Gas Detectors (ATEX Certified) Zone 1 & Zone 2. Contact T&D for with your enquiry.
See 3 more Crowcon Factoids ➡
Detecting Hydrogen Sulphide Gas
Methane Gas Detection – Know The Risks & Detect The Danger
Detecting Hydrogen Sulphide, Methane, Oxygen & Carbon Monoxide Gas Using Crowcon Detectors
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.
Detecting toxic and flammable gases requires the detectors to be classified and certified according to the specific IECEx or ATEX standard – we distribute flame and fire detectors manufactured by Spectrex to operate in the harshest environmental conditions including self-contained stand-alone devices designed for direct connection to control and alarm systems or automatic fire extinguishing systems.
Our range of Hazardous Area Fire & Gas Detection System products also includes Explosion Proof Warning Systems & Hazardous Area Lighting – comprehensive range of intrinsically safe, flameproof and explosion proof alarm sounders, sirens, bells and horns, loudspeakers and beacons.
♦ LV Power Products | Junction Boxes & Enclosures ATEX | Plugs ATEX | Control Stations ATEX | Isolators ATEX
Thorne & Derrick | Detecting Flame | Heat | Gas
Follow our Showcase Page on LinkedIn to receive hazardous area product innovations, industry news, whitepapers, videos, technical tips and training webinars for professionals involved in the explosive atmosphere industries.
Crowcon Gas Detection
T&D are distributors of Gas Detectors & Detection Equipment for industrial and hazardous area gas detection; this includes both portable and fixed gas detectors for improving site and worker safety in the food processing and beverage industries.
Stationary or fixed gas detectors provide advance warning against explosions, toxicity and oxygen levels by triggering alarms.
Portable gas detectors are suitable for working in confined spaces where mobile monitoring of harmful, flammable and toxic gas levels is required, whether the gas risk is in a safe or hazardous area.
Effective monitoring and detection of gases is essential to provide worker safety in the food and beverage industries where common gas risks include :
Typical applications and workplace exposures to gas: confined space entry, cold storage, grain delivery and storage, general safety, flash freezing and data-logging/industrial hygiene.
Food preparation and processing forms an integral part of the global food supply network and is one of the key factors that has enabled people to enjoy such a varied diet. The preparation and collection of foodstuffs typically involves gas, whether as a bi-product or in the direct preparation of food.
Monitoring these gases is vital to not only guarantee food quality and hygiene but to also protect those working in and around preparation areas. A variety of gases can be present throughout the food and beverage industry and monitoring these effectively can save lives and increase productivity.
Gas is present throughout the food production industry from fresh food produce to processed meals and packaging. Let’s review 2 recent instances where portable gas detectors have improved both safety and productivity.
| T4 | Gas-Pro | Gas-Pro IR | Gas-Pro PID | Tetra 3 | Clip | Gasman | Laser Methane Mini |
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Yes, you read correctly portable gas detectors can help hens when they are laying eggs.
Thorne and Derrick have recently been approached by a client searching for a solution to a rather unusual application. The client required a portable gas detection solution that could be used inside of poultry shelters that would require minimum training.
Portable gas detectors installed inside of poultry shelters are able to monitor the gas levels of the following gases; CO2, O2, NH3 and CH4.
Excess levels of these gases can prevent the hens from laying eggs or stop the eggs that do get laid from hatching.
A portable gas detector with built in data logger could be left in the coop and then removed to monitor the gas level average before being moved to the next coop and repeating the process.
Using a portable gas detector will keep the cost down as only one monitoring device is required and it can move throughout the coops.
Typically with chicken coops and the collection of eggs on a commercial scale, ammonia is the most prominent gas to cause harm and can be easily identified by its smell – a bleach like odour. Poultry farm animals naturally release ammonia gas and proper ventilation and gas detection is vital to protect farmers and anyone working in or around poultry.
T&D, distributors for Crowcon, recommended the Crowcon Gas-Pro Portable Gas Detector as an ideal solution for this application as the monitor is able to detect up to 5 gases at any one time.
There is an option to be able to preset the gases. In this instance the client would preset the gas monitor to detect CO2, O2, NH3 and CH4. The display screen is top mounted to allow easy reading of the results at a glance.
The Crowcon Gas-Pro gas detector is very simple to use as it is operated by a single button so product training is not required to operate the device.
Crowcon Gas-Pro Gas Detectors
From eggs to pizza….
A further application that T&D have supplied portable gas detectors for is the production of pizza dough demonstrating the diversity of gas detection requirements in the food industry.
This process can emit carbon dioxide which if left undetected can build up and rise to potentially fatal levels – CO2 displaces oxygen causing potentially fatal suffocation. Oxygen deficiency can also be caused by processes such as food cooling.
The fermentation of sugar and yeast in pizza dough produces carbon dioxide which in turn give the bubbles that appear in a pizza crust when baked. Although delicious when eaten, the levels of CO2 build up in commercial pizza dough production can be dangerous requiring gas detection to alert when levels are too high.
Brewing – Fermentation is also used to make alcohol when producing drinks such as beer, wine and cider. In brewing, alcoholic fermentation is the conversion of sugar into carbon dioxide gas (CO2) and ethyl alcohol.
If CO2 levels rise above 1,000 ppm workers can begin to experience headaches and drowsiness. If left unresolved or undetected, CO2 levels rising to 5,000 ppm will exceed safe workplace limits resulting in staff not being able to work, hampering production and incurring financial losses.
If the levels of carbon dioxide remain undetected and rise above 40,000 ppm this can lead to serious oxygen depletion resulting in brain damage, coma and ultimately death.
Portable gas detectors can be attached to clothing, overalls and transported around within manufacturing areas for the detection of carbon dioxide and other gases.
Gas Detectors – single gas and multi-gas detectors are capable for detecting up to 5 gases
The range of portable gas detectors distributed by T&D can detect many gases with certain detectors able to monitor up to 5 gases. With products available from leading brands such as Crowcon, T&D gas detector sales engineers are on hand to specify the correct portable gas detector for your needs.
The 4 key gases (but not limited to) that portable gas detectors are typically deployed for are Methane, Hydrogen Sulphide, Carbon Monoxide and Oxygen depletion (lack of Oxygen).
Portable gas detection offers a cost effective solution to a potentially fatal problem. The products easily pay for themselves in terms of saved revenue in keeping production going but also in preventing loss of life from toxic gas level exposure.
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.
Detecting toxic and flammable gases requires the detectors to be classified and certified according to the specific IECEx or ATEX standard – we distribute flame and fire detectors manufactured by Spectrex to operate in the harshest environmental conditions including self-contained stand-alone devices designed for direct connection to control and alarm systems or automatic fire extinguishing systems.
Our range of Hazardous Area Fire & Gas Detection System products also includes Explosion Proof Warning Systems & Hazardous Area Lighting – comprehensive range of intrinsically safe, flameproof and explosion proof alarm sounders, sirens, bells and horns, loudspeakers and beacons.
♦ LV Power Products | Junction Boxes & Enclosures ATEX | Plugs ATEX | Control Stations ATEX | Isolators ATEX
Thorne & Derrick | Detecting Flame | Heat | Gas
Follow our Showcase Page on LinkedIn to receive hazardous area product innovations, industry news, whitepapers, videos, technical tips and training webinars for professionals involved in the explosive atmosphere industries.
T&D – Suppliers of Crowcon Gas Detectors
T&D, the specialist distributor of Gas Detection, Detectors & Monitoring Equipment for H2S gas detection.
Watch, listen and learn how Crowcon, H2S gas detection specialists, protect people and plant from the gas risks posed by flammable and toxic gas.
Hydrogen sulphide gas is considered a broad-spectrum poison, meaning that it can poison several different systems in the body, although the nervous and respiratory systems are most severely affected. Besides being highly toxic H2S is a flammable gas – heavier than air and hence tending to accumulate in low-lying areas.
H2S is pungent but rapidly destroys the sense of smell.
H2S gas is toxic at breathable concentrations between 500-1000 ppm, but death is not instantaneous. However, at concentrations of greater than 1000 ppm, H2S is lethal.
Industry practice is to recognise that fatality from H2S exposure can occur over a wide concentration band but at around 500–1000 ppm exposure for a short period, the fatal exposure levels would be significant. 800 ppm is the generally accepted lethal concentration for 50% of an exposed human population for 5 minutes exposure.
T&D are Crowcon distributors – market leading fixed and portable gas detectors and monitors for flammable and toxic gases, including ATEX Certified equipm
H2S Gas Detection : Crowcon are market leading manufacturers of Portable and Fixed Gas Detection Equipment
The UK HSE (Health & Safety Executive) have provided guidance to duty holders for detecting and managing hydrogen sulphide (H2S) hazards in hydrocarbon processing systems. As reservoirs begin to water out, hydrogen sulphide can become an issue when processing returning fluids. The gas is toxic in relatively low concentrations and the risks to the workforce need to be safely addressed once the presence of hydrogen sulphide has been detected.
H2S presence in reservoir streams tends to increase with time and it is important therefore that duty holders ensure that if the concentration levels in modules begin to increase the toxicity status of the areas are revised accordingly. The recommended strategy for fixed and portable detection is based on accepted management practice for confined space entry, and normally accessible process modules.
On an offshore installation, the standards recommend a 3-tier approach to H2S gas detection; similar to the flammable hazardous area classification arrangements:-
Fixed H2S detection is not recommended in areas where H2S is known to be present at high concentrations during normal operations. The argument is that if the presence of the toxic gas is known and known to be unacceptably high, there is no reason for installing detection.
Access is controlled by special precautions, confined space entry management, that starts with the removal of H2S and initial entry is by specifically trained personnel with portable H2S detection equipment wearing breathing apparatus (BA) and other protective equipment.
Entry is only allowed with portable toxic detection equipment and fixed detection is recommended for these areas to maintain a risk history, but should not be used for making safety-related decisions.
For ‘open access modules’, where H2S is not normally present but could be following a leak, fixed detection is recommended in certain scenarios. This is based on a concentration of 500 ppm H2S in the ‘carrier’ stream of process fluids. If the H2S concentration is below 500 ppm, in the carrier stream, the areas may be classified as “2A” and H2S detection is via the standard hydrocarbon detection instruments. At concentrations greater than 500 ppm, in the carrier stream, the area is designated “2B”, and requires a H2S specific detection system because the hydrocarbon detection systems cannot provide a timely response to the more harmful, higher H2S concentrations levels.
This argument is based on an assumption in the standard (unsubstantiated) that process hydrocarbon carrier gas on release is diluted to 1% by air entrainment. Hence if the hydrocarbon gas contained 500 ppm H2S, the toxic component would be diluted to 5 ppm; the occupational exposure limit (OEL) for the gas. However, there is no supporting argument in the standard that a 100:1 dilution will be achieved if a hydrocarbon gas stream is released to atmosphere.
Na Kika Project : involves the production of hydrocarbons from five small- to medium-sized discoveries in the Mississippi Canyon area of the Gulf of Mexico. Shell already has an extensive range of offshore hydrocarbon operations in the Gulf of Mexico. The map shows the oil projects operated by Shell, the gas projects operated by Shell and the many offshore hydrocarbons project in which Shell has an interest. Image Courtesy : Hydrocarbon Technology
The offshore industry employs about 28,000 personnel in the UK involved in a wide range of activities.
Since the Piper Alpha disaster in 1988, health and safety issues concerning offshore platforms have vastly reduced, however, the work practices involved are not risk free and still have the potential to cause considerable loss of life when things go wrong.
A falling oil price, declining reserves and an ageing infrastructure have resulted in increased drilling activity around marginal fields. Operators have looked for new ways in which to cut costs, which could affect the health and safety of the workforce.
In recent years there has been an increase in the number of major and significant hydrocarbon releases on offshore platforms that require investigation. – the following report aims to identify the immediate cause of hydrocarbon leaks and determine if there are discernable reasons for the increasing trends.
Hydrogen sulphide is a colourless gas that is known by its characteristic rotten egg like odour appearing naturally as a by-product of decomposition. A drawback to trusting the senses (olfactory) for protection against hydrogen sulphide is that prolonged exposure to the gas renders the sense of smell inoperative.
H2S reacts with the enzymes in the blood stream which inhibit cell respiration.
Put simply, high concentrations of hydrogen sulphide can shut off the lungs. Low concentration exposure to the gas can burn the respiratory tract and cause swelling around the eyes.
Symptoms of acute H2S gas exposure include nausea, headaches, delirium, tremors, convulsions, skin and eye irritation
The following table provides an overview of the Crowcon Gas Detectors available for detecting hydrogen sulphide – for expert technical support and product selection guidance please call T&D Sales Engineers.
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Crowcon Xgard INFO |
 Crowcon TXgard-IS+ INFO |
 Crowcon Clip INFO |
 Crowcon TXgard Plus INFO |
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Crowcon Gasman INFO |
Crowcon Tetra 3 INFO |
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Crowcon GasPro INFO |
Crowcon Tetra INFO |
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Crowcon Triple Plus+ INFO |
Crowcon Detective+ INFO |
 Crowcon Detective INFO |
 Crowcon XgardIQ INFO |
 Crowcon T4 INFO |
Crowcon Gas-Pro PID INFO |
Crowcon Hazardous Area Gas Detectors (ATEX Certified) Zone 1 & Zone 2. Contact T&D for with your enquiry.
See 3 more Crowcon Factoids ➡
Detecting Hydrogen Sulphide, Methane, Oxygen & Carbon Monoxide Gas Using Crowcon Detectors
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.
Detecting toxic and flammable gases requires the detectors to be classified and certified according to the specific IECEx or ATEX standard – we distribute flame and fire detectors manufactured by Spectrex to operate in the harshest environmental conditions including self-contained stand-alone devices designed for direct connection to control and alarm systems or automatic fire extinguishing systems.
Our range of Hazardous Area Fire & Gas Detection System products also includes Explosion Proof Warning Systems & Hazardous Area Lighting – comprehensive range of intrinsically safe, flameproof and explosion proof alarm sounders, sirens, bells and horns, loudspeakers and beacons.
♦ LV Power Products | Junction Boxes & Enclosures ATEX | Plugs ATEX | Control Stations ATEX | Isolators ATEX
Thorne & Derrick | Detecting Flame | Heat | Gas
Follow our Showcase Page on LinkedIn to receive hazardous area product innovations, industry news, whitepapers, videos, technical tips and training webinars for professionals involved in the explosive atmosphere industries.
T&D – Suppliers of Crowcon Gas Detectors
T&D, the specialist distributor of Gas Detection, Detectors & Monitoring Equipment for O2 gas detection.
Watch, listen and learn how Crowcon, O2 gas detection specialists, protect people and plant from the gas risks posed by flammable and toxic gases and oxygen depletion or enrichment levels.
Hypoxia (low physiologic oxygen content) symptoms include loss of peripheral vision and colour acuity causing panic and damaging personal coordination and judgement. Rapid onset of impaired sensory ability can seriously impact upon workers ability to implement self-rescue actions in confined space emergency situations.
Planned Oxygen Depletion: intended low oxygen levels may be unavoidable when carrying out confined space entries in the presence of flammable or explosive atmospheres in hazardous area locations. Oxygen removal eliminates the threat of the Fire Triangle. Adequate oxygen gas depletion detectors are essential to precise monitoring of low O2 levels in confined spaces in both safe (non-hazardous) and hazardous area classified work zones.
Unplanned Oxygen Depletion: often caused by equipment failure or inadequate isolation techniques. Even where entry teams have assessed confined space safety and relevant permits have been issued a previous entry team could have inadvertently introduced an inert gas into the confined space and failed to ventilate. Lethal low levels of oxygen should be detected using portable gas detectors for both permit and non-permit confined space working.
T&D are Crowcon distributors – market leading fixed and portable gas detectors and monitors for flammable and toxic gases, including ATEX Certified equipment
Main causes of fires and explosions when using oxygen are:
Oxygen O2 Gas Detection : Crowcon are market leading manufacturers of Portable and Fixed Gas Detection Equipment
Crowcon Tetra 3 gas detector is widely used for confined space entry, strengthened by specialist gas options for the water, hospitality and steel industries.
Crowcon Tetra 3 multigas monitor is a compact, robust and easy-to-use diffusion based gas detector. Single button operation, small size and clear top-mounted display for working in demanding industrial environments, such as water, telecoms, food, brewing or hydrocarbons sectors. Gases include the most common four (carbon monoxide, methane, oxygen and hydrogen sulphide), but also an expanded gas range: ammonia, ozone, sulphur dioxide, H2 filtered CO (for steel plants) and IR carbon dioxide (for safe area use only).
Crowcon Tetra 3 Gas Detectors
The following table provides an overview of the Crowcon Gas Detectors available for detecting oxygen – for expert technical support and product selection guidance please call T&D Sales Engineers.
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Crowcon Xgard INFO |
Crowcon TXgard-IS+ INFO |
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Crowcon Clip INFO |
Crowcon TXgard Plus INFO |
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Crowcon Gasman INFO |
Crowcon Tetra 3 INFO |
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Crowcon GasPro INFO |
Crowcon Tetra INFO |
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Crowcon Triple Plus+ INFO |
Crowcon Detective+ INFO |
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Crowcon Detective INFO |
Crowcon XgardIQ INFO |
 Crowcon Gas-Pro IR INFO |
Crowcon Gas-Pro PID INFO |
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Crowcon T4 INFO |
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Crowcon Portable Gas Detector used by BBC Film Crew on Indonesian Volcano
A BBC film crew filming sulphur miners in the crater of an active volcano used a Crowcon (UK) Tetra 3 portable gas detector to warn them of dangerous levels of hydrogen sulphide (H2S). The crew were filming in Indonesia as part of the BBC’s landmark ‘Human Planet’ series which explores mankind’s relationship with nature in the world today.
Crowcon Hazardous Area Gas Detectors (ATEX Certified) Zone 1 & Zone 2. Contact T&D for with your enquiry.
See 3 more Crowcon Factoids ➡
Detecting Hydrogen Sulphide Gas
Detecting Hydrogen Sulphide, Methane, Oxygen & Carbon Monoxide Gas Using Crowcon Detectors
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.
Detecting toxic and flammable gases requires the detectors to be classified and certified according to the specific IECEx or ATEX standard – we distribute flame and fire detectors manufactured by Spectrex to operate in the harshest environmental conditions including self-contained stand-alone devices designed for direct connection to control and alarm systems or automatic fire extinguishing systems.
Our range of Hazardous Area Fire & Gas Detection System products also includes Explosion Proof Warning Systems & Hazardous Area Lighting – comprehensive range of intrinsically safe, flameproof and explosion proof alarm sounders, sirens, bells and horns, loudspeakers and beacons.
♦ LV Power Products | Junction Boxes & Enclosures ATEX | Plugs ATEX | Control Stations ATEX | Isolators ATEX
Thorne & Derrick | Detecting Flame | Heat | Gas
Follow our Showcase Page on LinkedIn to receive hazardous area product innovations, industry news, whitepapers, videos, technical tips and training webinars for professionals involved in the explosive atmosphere industries.
T&D – Suppliers of Crowcon Gas Detectors
T&D, the specialist distributor of Gas Detection, Detectors & Monitoring Equipment for CO gas detection.
Watch, listen and learn how Crowcon, CO gas detection specialists, protect people and plant from the gas risks posed by flammable and toxic gas.
T&D are Crowcon distributors – market leading fixed and portable gas detectors and monitors for flammable and toxic gases, including ATEX Certified equipment
CO Carbon Monoxide Gas Detection : Crowcon are market leading manufacturers of Portable and Fixed Gas Detection Equipment
Unsafe gas appliances produce a highly poisonous gas called carbon monoxide (CO). It can cause death as well as serious long term health problems such as brain damage. Carbon monoxide symptoms are similar to flu, food poisoning, viral infections and simply tiredness. That’s why it’s quite common for people to mistake this very dangerous poisoning for something else.
You can’t see it, taste it or smell it but it can kill quickly and with no warning. Detect it with Crowcon CO Gas Detectors.
CoGDEM is the Council of Gas Detection and Environmental Monitoring, a trade association with a membership of around sixty companies involved in the gas detection industry.
CoGDEM is recognised as the single representative voice serving the U.K.’s gas detection, analysis and monitoring industries.
In recent years, the true toxicity of CO2 in the workplace has been identified and publicised, including articles in IET by HSE and others. For example, it was common practice in the alcohol brewing and distilling process industry just twenty years ago to monitor oxygen deficiency as the only means of protecting workers from exposure to excessive CO2. However, it had to be pointed out that oxygen levels may only be very slightly depressed by the time a CO2 concentration exceeded Workplace Exposure Limits. In the UK the HSE’s EH40 document shows the WELs for CO2 to be 0.5% (8-hour LTEL) and 1.5% (15-minute STEL). These levels indicate that CO2 is a toxic gas in its own right, not just an asphyxiant when it displaces enough oxygen.
The following table provides an overview of the Crowcon Gas Detectors available for detecting carbon monoxide – for expert technical support and product selection guidance please call T&D Sales Engineers.
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Crowcon Xgard INFO |
Crowcon TXgard-IS+ INFO |
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Crowcon Clip INFO |
Crowcon TXgard Plus INFO |
|
Crowcon Gasman INFO |
Crowcon Tetra 3 INFO |
|
Crowcon GasPro INFO |
Crowcon Tetra INFO |
|
Crowcon Triple Plus+ INFO |
Crowcon Detective+ INFO |
|
Crowcon Laser Methane Mini INFO |
Crowcon XgardIQ INFO |
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Crowcon Gas-Pro IR INFO |
Crowcon Gas-Pro PID INFO |
|
Crowcon T4 INFO |
Crowcon Detective INFO |
 Crowcon I-Test & I-Test Manager INFO |
 Crowcon Bump & Calibration Gas INFO |
Crowcon Hazardous Area Gas Detectors (ATEX Certified) Zone 1 & Zone 2. Contact T&D for with your enquiry.
See 3 more Crowcon Factoids ➡
Detecting Hydrogen Sulphide Gas
Detecting Hydrogen Sulphide, Methane, Oxygen & Carbon Monoxide Gas Using Crowcon Detectors
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.
Detecting toxic and flammable gases requires the detectors to be classified and certified according to the specific IECEx or ATEX standard – we distribute flame and fire detectors manufactured by Spectrex to operate in the harshest environmental conditions including self-contained stand-alone devices designed for direct connection to control and alarm systems or automatic fire extinguishing systems.
Our range of Hazardous Area Fire & Gas Detection System products also includes Explosion Proof Warning Systems & Hazardous Area Lighting – comprehensive range of intrinsically safe, flameproof and explosion proof alarm sounders, sirens, bells and horns, loudspeakers and beacons.
♦ LV Power Products | Junction Boxes & Enclosures ATEX | Plugs ATEX | Control Stations ATEX | Isolators ATEX
Thorne & Derrick | Detecting Flame | Heat | Gas
Follow our Showcase Page on LinkedIn to receive hazardous area product innovations, industry news, whitepapers, videos, technical tips and training webinars for professionals involved in the explosive atmosphere industries.
Published 13 Mar 2020
Press Release Date: 02.04.2020 uploaded by Chris Dodds (T&D Sales + Marketing Manager) World’s First Fully Certified ATEX Doors Thorne & Derrick International, the Experts in Equipment for Explosive Atmospheres, today announce the signing of a Commercial Distribution Agreement...
Published 04 Jul 2019
Press Release Date: 04.07.2019 uploaded by Chris Dodds (T&D Sales + Marketing Manager) Category: Stockist Distributor Agreement Announcement Thorne & Derrick International announce that they have signed a Preferred Distributor Agreement with Raytec, the world leading manufacturer of LED...
