Types of Flame Detector
A flame detector detects and responds to a fire incident, in a plant or on a site. Its responses to a detected flame depend on the installation; however, it can be an integrated system with an alarm, deactivating a fuel line (natural gas, propane, etc.), and a fire suppression system.
A flame detector comprises an electronic circuit with an electromagnetic radiation receiver. It is activated when electromagnetic radiation from one or more defined wavelengths is detected (as per the spectrum (UV, IR, etc.).
Infrared Flame Detector
The Infrared flame detector consists of sensors that operate by using an Infrared wavelength of light. A small thermal imaging camera in these devices can spontaneously identify the incidents of hot gasses released anywhere near the Infrared detector.
SharpEye's Single Infrared flame detectors recognise fuel and gas fires at long distance, applying advanced flame analysis tools. They are a durable and effective low-cost solution for flame detection for off-shore and on-shore Oil & Gas installations and pipe works, chemical and petrochemical plants, power-generation facilities, pharmaceutical industries, warehouses, and many more. They have an early warning system working at a sensitivity of 4.5μm.
Similarly, SharpEye's Multi Infrared detectors identify hydrocarbon and flames at large distances. It can recognise a gasoline pan flame at 65m or a hydrogen flame at 30m within 5 seconds. It also incorporates a heated window to eradicate condensation and frosting, and more thrifty power requirements, with a sleek design.
Ultraviolet Flame Detector
Ultraviolet (UV) detectors know the UV radiation emitted at the instant of ignition. While they can detect flames and explosions within 3–4 milliseconds, designs often include a time delay of 2–3 seconds to reduce the incidence of false alarms, triggered by other UV sources such as lightning, arc welding, radiation, and sunlight.
False alarms are a significant cause of productivity loss; therefore, SharpEye's detectors are immune to false alarms from Infrared sources such as sunlight and IR projectors. These are also highly durable and suitable for all weather conditions. They also incorporate Highway Addressable Remote Transducer (HART) protocols for digital communications.
Types of Open Path Gas Detectors
Open path gas detection systems offer protection from poisons, highly-sensitive and hazardous gas leaks. They are line-of-sight gas monitoring system suitable for long-distance detections. There are duct and site variables of Open Path Gas detectors for hydrocarbons.
Duct Variable
Duct Open Path Detectors find their application in monitoring the intrusion of hazardous gas concentrations into air ducts of turbine engines and HVAC. The development and ingress f gas clouds into safe places, control rooms, turbine engines, etc., can have substantial risk. Therefore, adequate and fast detection alarm systems are necessary to mitigate these hazards.
The optical design of duct-specific detectors provides a misalignment tolerance of 2° in all directions, and guard against false gas reading and alarms generated by partial obscuration, misalignment, tilts, flexing, or vibration. Their temperature compensating mechanism enables accurate performance in varying and extreme temperatures.
Site Variable
The Quasar 900 open path gas detector protects during high-risk installations, both off-shore and on-shore. The state-of-the-art open path Infrared technology detects a broad range of hydrocarbon gases, including alkanes (like methane, ethane, propane, and up to hexane), and ethylene. The Path lengths of detection with Quasar 900 can be up to 200m.
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