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Gas Detector

A gas detector is a type of marine equipment that is used to detect hazardous gas leaks on ships. Gas detectors have evolved over time and are now assisting mariners in avoiding potential accidents.

Gas detectors are the most evident and reliable method of detecting gas leakage. Gas detectors are handy tiny gadgets that can detect the presence of hazardous and toxic gases in a given location. They're linked to sensors that sound an alarm if a harmful chemical has escaped in the area beyond a safe level.

Since the recognition of the harmful effects of gases in enclosed spaces and hazardous situations, gas detectors have been utilised in a variety of sectors. Canaries (a bird) were utilized to detect gas leaks in the early days of mining, long before sensors were invented. The canaries were kept in cages in mines, and if they stopped singing, the miners knew there was a gas shortage. Since the 19th and early 20th centuries, we've come a long way. Gas detection procedures are now far more exact — and far less dangerous to animals.

The amount of gas in the air is measured by a sensor in gas detectors. When a chemical reaction produced by a certain gas happens, the sensors are calibrated to measure and produce an electric current. When the presence of gas approaches a dangerous level, the sensor will monitor the current and alert the user. The older gas detectors could only detect one gas at a time, but currently they can detect numerous gases, including oxygen (O2), flammable gases or vapours (LEL), hydrogen sulfide (H2S), and carbon monoxide (CO) (CO). A four-gas detector keeps track of these gases.

The tank and vessel types determine the gas detector configuration. Usually, there are three major factors to consider:

• Monitor for explosive gasses
• Monitor for toxic gases based on the hygienic limits
• Monitor for sufficient oxygen

Explosive gases and Oxygen are easily determined as necessary to monitor, however determining which toxic gases to monitor relies upon the tank and vessel type.

Sensors Used in Gas Detectors

Most portable gas detectors use a pellistor/catalytic bead LEL sensor. These gas detectors only work when there is at least 10% oxygen in the surrounding air, preventing the build-up of tar and unburned fuel. The sensor can survive up to four years in theory, but it is extremely sensitive and can easily break if the monitor is dropped or knocked.

Infrared Sensors

Infrared sensors do not require oxygen because they operate in an inert gas environment. This makes them excellent for use in confined locations where oxygen is scarce. Hazardous chemicals that accumulate around infrared sensors do not harm them over time. They're also resistant to sensor poisoning, so there's no need to calibrate the gas detector to ensure it's working properly. A heated aluminium coil is used in a classic pellistor sensor. The coil consumes too much energy and depletes the entire system. The use of infrared sensors in gas detectors saves energy. They are powered by high-capacity batteries that don't drain quickly.

Pellistor Sensors

Pellistor sensors can be damaged if dangerous chemicals are detected frequently. They may get poisoned in the long run. Gas levels may not detect contaminated sensors, causing them to become less responsive over time. Their performance is dependent on calibration and bump-testing to ensure that they detect the correct quantity of gas to assist seamen in responding to emergencies and keeping the ship safe.

Most gas detectors have a three-year lifespan and must be replaced or serviced after that. Because this is a pricey process that will take the detector out of service, you'll need backup instruments to ensure you're covered while the repairs are being done. Other components, such as backlit panels and audio alerts, can begin to fail as well, so it's critical to keep detectors in good working order. While your ship is in the bay, Maritronics provides exceptional service engineers to solve any difficulties with gas detectors. Keep in touch with Linkmarine, the largest leading ship automation service provider. We promise you the best gas detection services from the reputed Marcurco Dubai UAE.