The flame detector is one of the essential accessories of the Riello burner. How does the flame detector work? There are many brands of flame detectors. Currently, burner flame detectors that use the principle of radiated light energy are the most widely used. It is also the most effective burner flame detector method. The principle of radiant light energy intensity detection is to use a probe to receive the radiation emitted by the flame, and determine the presence or absence of the flame according to its intensity. Due to the different detection bands, it can be divided into ultraviolet, visible light, infrared and full radiation flame detection. Flame detection signals come from UV detectors and smoke detectors.
The flame detector has three independent detection tubes for detecting ultraviolet radiation with a wavelength of 190-270nm. When radiation from the flame strikes the cathode of one of the detector tubes, a beam of electrons is emitted. The electron beam strikes the ionized gas filling the detector tube, emitting more electrons and creating avalanche conditions. More electrons are released, creating an instantaneous flow of electrons between the cathode and anode. This instantaneous flow of electrons (pulses) occurs repeatedly at a rate proportional to the intensity of UV radiation. The frequency of the pulses is converted into a voltage in the detector and transmitted to the burner controller. The ultraviolet and infrared probes detect different parts of the spectrum respectively. Only when the two probes detect the corresponding spectrum at the same time, the ultraviolet and infrared probes will output. This avoids the possibility of using the ultraviolet or infrared probe alone due to certain reasons (such as lightning). , arc welding, etc.) caused by false alarms. The flame probe has two relay outputs. The normally closed point of the fault relay is connected in series with the terminal resistor and connected to the normally open point of the flame relay. When a fault occurs in the probe, the fault relay operates and generates a fault (open circuit) signal.
When a flame is detected, the flame relay operates and outputs an alarm signal. The UV/IR adopts an automatic oi test function, which checks once a minute to check the cleanliness of the probe lens, the sensitivity of the sensor and the function of the internal electronic circuit. If a fault is detected three times in a row, the probe will output a fault signal. The flame detectors of Black & Decker burners and Riello burners are also developed and extended based on the above theory.
The flame detector is one of the essential accessories of the Riello burner. How does the flame detector work? There are many brands of flame detectors. Currently, burner flame detectors that use the principle of radiated light energy are the most widely used. It is also the most effective burner flame detector method. The principle of radiant light energy intensity detection is to use a probe to receive the radiation emitted by the flame, and determine the presence or absence of the flame according to its intensity. Due to the different detection bands, it can be divided into ultraviolet, visible light, infrared and full radiation flame detection. Flame detection signals come from UV detectors and smoke detectors.
The flame detector has three independent detection tubes for detecting ultraviolet radiation with a wavelength of 190-270nm. When radiation from the flame strikes the cathode of one of the detector tubes, a beam of electrons is emitted. The electron beam strikes the ionized gas filling the detector tube, emitting more electrons and creating avalanche conditions. More electrons are released, creating an instantaneous flow of electrons between the cathode and anode. This instantaneous flow of electrons (pulses) occurs repeatedly at a rate proportional to the intensity of UV radiation. The frequency of the pulses is converted into a voltage in the detector and transmitted to the burner controller. The ultraviolet and infrared probes detect different parts of the spectrum respectively. Only when the two probes detect the corresponding spectrum at the same time, the ultraviolet and infrared probes will output. This avoids the possibility of using the ultraviolet or infrared probe alone due to certain reasons (such as lightning). , arc welding, etc.) caused by false alarms. The flame probe has two relay outputs. The normally closed point of the fault relay is connected in series with the terminal resistor and connected to the normally open point of the flame relay. When a fault occurs in the probe, the fault relay operates and generates a fault (open circuit) signal.
When a flame is detected, the flame relay operates and outputs an alarm signal. The UV/IR adopts an automatic oi test function, which checks once a minute to check the cleanliness of the probe lens, the sensitivity of the sensor and the function of the internal electronic circuit. If a fault is detected three times in a row, the probe will output a fault signal. The flame detectors of Black & Decker burners and Riello burners are also developed and extended based on the above theory.