Abstract: A multi-component analyzing apparatus in which infrared light is irradiated to a measuring-subject sample S which is constituted by either measuring-subject components whose sorts or quantities are limited or by a mixed article made of said measuring-subject components; intensity of infrared light having respective wavelength ranges which are fitted to infrared absorption spectra of the respective measuring-subject components among such infrared light penetrated through the measuring-subject sample S is measured by employing a plurality of detectors 4a to 4g corresponding thereto; and said multi-component analyzing apparatus is comprised of a calculation processing unit 6 for analyzing the infrared light intensity of the respective wavelength ranges so as to acquire concentration x1 to x7 of the respective measuring-subject components; wherein the calculation processing unit 6 is capable of executing an analyzing process program P for executing analysis operations of the concentration x1 to x7 of the respecti

Abstract: A refrigerant refill amount calculating apparatus is provided with concentration measuring units for measuring component ratios X1:Y1:Z1 of fluorocarbon S contained in a refrigerating machine, and a calculation processing unit. The calculating unit calculates additional filling amounts of respective refrigerant components which are required to fill fluorocarbon having a defined amount “A” in accordance with defined component ratios X:Y:Z within the refrigerating machine 2 based upon an additional filling amount Xa of a refrigerant component which has been additionally filled into the refrigerating machine, and a change amount of component ratios X1:Y1:Z1, X2:Y2:Z2 which have been measured before and after the refrigerant component was filled. Refill amounts of refrigerant components can be easily calculated in a correct manner.

Abstract: An optical detector 1 wherein detection elements 11, 12, 13 and 14 are provided in a sealed case 4 whose opening portion 3 is blocked with a window material 2 for transmitting light such as an infrared and an ultraviolet ray therethrough, the detection elements being formed opposite to the window material; and optical filters 21, 22, 23 and 34 are disposed between the window material 2 and the detection elements 11, 12, 13 and 14 and used for selecting and causing only light composed of a predetermined band of wavelengths to be transmitted by thin optical films in connection with the detection elements 11, 12, 13 and 14.

Abstract: A multi-component analyzing apparatus in which infrared light is irradiated to a measuring-subject sample S which is constituted by either measuring-subject components whose sorts or quantities are limited or by a mixed article made of said measuring-subject components; intensity of infrared light having respective wavelength ranges which are fitted to infrared absorption spectra of the respective measuring-subject components among such infrared light penetrated through the measuring-subject sample S is measured by employing a plurality of detectors 4a to 4g corresponding thereto; and said multi-component analyzing apparatus is comprised of a calculation processing unit 6 for analyzing the infrared light intensity of the respective wavelength ranges so as to acquire concentration x1 to x7 of the respective measuring-subject components; wherein the calculation processing unit 6 is capable of executing an analyzing process program P for executing analysis operations of the concentration x1 to x7 of the respecti

Abstract: A refrigerant refill amount calculating apparatus is provided with concentration measuring units for measuring component ratios X1:Y1:Z1 of fluorocarbon S contained in a refrigerating machine, and a calculation processing unit. The calculating unit calculates additional filling amounts of respective refrigerant components which are required to fill fluorocarbon having a defined amount “A” in accordance with defined component ratios X:Y:Z within the refrigerating machine 2 based upon an additional filling amount Xa of a refrigerant component which has been additionally filled into the refrigerating machine, and a change amount of component ratios X1:Y1:Z1, X2:Y2:Z2 which have been measured before and after the refrigerant component was filled. Refill amounts of refrigerant components can be easily calculated in a correct manner.

Abstract: An optical detector 1 wherein detection elements 11, 12, 13 and 14 are provided in a sealed case 4 whose opening portion 3 is blocked with a window material 2 for transmitting light such as an infrared and an ultraviolet ray therethrough, the detection elements being formed opposite to the window material; and optical filters 21, 22, 23 and 34 are disposed between the window material 2 and the detection elements 11, 12, 13 and 14 and used for selecting and causing only light composed of a predetermined band of wavelengths to be transmitted by thin optical films in connection with the detection elements 11, 12, 13 and 14.

Abstract: A method and apparatus for measuring particulates in a combustion gas is accomplished by dividing the combustion gas into a first and second sample gas. The first sample gas is filtered to remove particulates to create a reference gas sample. A combustion furnace can heat both the reference gas sample and the sample gas to oxidize any particulates in the sample gas. A gas analyzer that is connected to the furnace can detect the gas components in, respectively, the reference gas sample and the sample gas, and a comparison of the detected results can determine the concentration of particulates.

Abstract: An improved infrared analyzer is provided wherein an unknown specimen gas can be subjected to a measuring infrared ray and a comparative infrared ray to provide resulting signals. The system can be initially calibrated when a zero gas state is initially achieved in the sample cell, and correction factors are achieved by holding the zero gas instrument signal and an output difference between a zero gas comparison signal and the measuring signal for subsequent processing of the actual measurement of the specimen gas to provide a calibrated output signal representative of the concentration of the unknown gas.

Abstract: A sensitivity calibration circuit for use in an absorption analyzer provided with a check-signal generator for easily checking the sensitivity, includes a temperature compensating circuit for use in an optical system for compensating for a temperature draft due to said optical system and a temperature compensation circuit for use in a sample system for compensating for a temperature draft due to the sample system.

Abstract: A sensitivity-calibration circuit for an HC analyzer includes a scale factor adjuster for setting a scale factor in the analyzer for determining an n-hexane reduced gas concentration value of propane gas used during sensitivity-calibration of the analyzer and a sensitivity adjuster for adjusting the sensitivity of the analyzer and a switching means for switching the circuit between a first calibration state and a second measurement state.

Abstract: A gas analyzer provided with apertures on the optical paths from a light source through a cell to sensors and multi-layer interference band-pass filters on the respective optical paths. The structure makes it possible to change the distance between each sensor and the corresponding aperture, or the change the size of the aperture, for changing the maximum angle of incidence of light on the filters which is sensed by the sensors to thus change the central wavelength of the filters.

Abstract: An optical system for a spectroscopic analyzer. The system has a light source, a detector and a sample cell connected in a line, and in the sample cell or between the sample cell and one of the other elements is a light chopper device. The light chopper has a rotating element in the form of a disc-shaped member or members which periodically block light from the light source and pass light during the times it is not blocked. The rotating element is driven by a motor on the outside of the structure.