Patent ID: 8346500

Claim:
A self check-type flame detector, comprising: a casing provided with a monitoring window formed therein; a wavelength generation unit disposed inside the casing and configured to generate a wavelength in a direction of the monitoring window; a wavelength detection element disposed inside the casing and configured to detect the wavelength generated by the wavelength generation unit; a comparison unit provided with a wavelength database (DB) for storing intensity of a reference wavelength and configured to determine whether the monitoring window has been contaminated by comparing intensity of the wavelength detected by the wavelength detection element with that of the reference wavelength stored in the wavelength DB; a display unit located outside the casing and configured to display a state of the monitoring window determined by the comparison unit; and a communication unit disposed inside the casing and configured to receive operation information for the wavelength generation unit from outside of the casing, to provide the operation information to the wavelength generation unit, and to transmit the intensity of the wavelength detected by the wavelength detection element, or a normal signal or a contamination signal of the monitoring window determined by the comparison unit, to outside of the casing.