Tips To Select The Right Flame Detector

Posted by Melriya Technical Solutions on February 24th, 2022

A Flame detector is designed to detect one or more of the four characteristics of fire, heat, smoke, combustion gas or ultraviolet radiation. All film dictators have strengths and limitations, you, therefore, need to understand these to select the most appropriate technology for given fire risk. You should consider several different types of performance variables while selecting the proper flame detector.

1: Immunity to unwanted alarms

A flame dictator must mitigate the possibility of false alarms from non-fire sources. A false alarm incident may cause system shutdown and evacuation. Restarting a process may take hours or days, particularly when considering quality, environmental and process safety regulatory requirements. Placing the detectors in more appropriate locations, decreasing their sensitivity setting and increasing their delay setting may mitigate false alarms.

2: Principles of flame detection

Most flame detectors identify flames by so-called optical methods like ultraviolet, and infrared spectroscopy and visual flame imaging. Flames in a refinery, for example, are generally fueledby hydrocarbons, which when supplied with oxygen and an ignition source, produce heat, carbon dioxide and other products of combustion. Flame detectors are designed to detect the absorption of light at a specific wavelength, allowing them to discriminate between flames and false alarm sources.

3: Detection range and response time

A flame detectors most basic function criteria are detection range and response time.Depending on a specific plant application environment, each of the alternative flame detection technologies recognises are flames within a certain distance and distribution of response times. The greater the distance and the shorter the time that a given flame sensing technology requires to detect a flame, the more effective it is at supplying early warning against fire and detonations.

4: Self-diagnostics

To meet the highest reliability standards, continuous optical path monitoring diagnostics are often built into optical flame directors, like those manufactured by General Monitors. The shelf procedure is designed to ensure that the optical path is clear, the detector is functioning and the electronic circuitry is operational. Self-check routines are programmed into the flame director’s control.
After gaining a better picture of the potential flame hazard, the principle of flame detection and the types of flame detection technologies available today, the use of will be in a better position to select a flame detector. PLCis an industrial computer to control manufacturing processes.