How does a flame detector work?

There are many brands of ion flame detectors. At present, flame detectors using the principle of radiation source solar energy are more cutting-edge and feasible flame detection methods. The principle of solar compressive strength testing for radiation sources is to use a probe to receive the radiation source emitted by the flame and distinguish whether the flame appears or not based on its intensity. Due to the difference in inspection wavelength, it can be divided into ultraviolet light, visible light, infrared induction, and total radiation source flame inspection.

The flame detection data signals come from ultraviolet detectors and smoke detectors. The flame detector has three separate detection tubes that detect ultraviolet light with a wavelength of 180-260 angstroms. When the radiation of the flame acts on the negative electrode of one of the detection tubes, an ion beam is emitted. The ion beam is so effective that it fills the detector tube with ionized gas, sending out more electronic devices, creating a avalanche standard. More electronic devices are released, creating a transient flow of electrons between the cathode and anode. This instantaneous electron flow (single pulse) is generated repeatedly at a speed proportional to the compressive strength of ultraviolet light. The number of single pulses is converted into a working voltage within the detector and transmitted to the control board.

The ultraviolet and infrared probes each detect different parts of the spectrometer. Only when the two probes simultaneously detect the corresponding spectrometer can the ultraviolet and infrared probes be exported, which prevents false alarms caused by certain reasons (such as lightning, arc welding, etc.) when using ultraviolet or infrared probes alone.

The flame probe of Xuzhou Jieneng Electric Power Equipment Co., Ltd. has two types of relay outputs. The normally open and normally closed point of the common fault relay is connected in series with the terminal resistor and connected to the normally open point of the flame relay.

When a common fault occurs with the probe, the common fault relay posture causes a common fault (pilot) data signal. When a flame is detected, the flame relay poses, leading to an alarm system. The UV/IR uses a fully automated oi test function, which is performed approximately once a minute to verify probe lens cleanliness, sensor sensitivity, and the effects of internal electronic circuitry.