PURPOSE: To perform a highly stable and accurate measurement, by arranging only one wavelength modulator in a spectrometer and providing a slit for optical axis regulation to a marker for optical axis regulation or an exit slit plate and making a slight regulation mechanism only an exit slit slight regulation mechanism.
CONSTITUTION: Light from a light source 5 is made incident to a spectrometer 20 from an exit slit 21 through an absorption cell 6 for microanalysis of gas or liquid, especially for three components measurement of SO2, NO, NO2 in flue exhaust gas. Only one attachable and detachable refraction board twist oscillation type wavelength modulator 29 is provided in the spectrometer 20. At first, the modulator is taken off and a collimator mirror 22 and a diffraction grating 23, are arranged on a attachable and detachable marker 57 at a position irradiating a zero order diffraction light 4 and then, an optical axis is regulated. Or a collector mirror 25 is regulated by an exit slit 26 for optical axis regulation and the optical axis is regulated. Next, the modulator 29 is placed and luminous flux from exit slits 27, 27', 27" of each component luminous flux are converted into signals by using inexpensive side-on type photoelectric converters 40, 40', 40". Then, said signal is inputted into a signal processing equipment 100 to obtain the display of each component. In this manner, the measurement of three components is achieved by one apparatus.
IZUMI TAKUSUKE
SEKINO SHIYOUZOU
SHIMIZU ASAJI
TAKEDA NOBUAKI
ANRITSU ELECTRIC CO LTD
| JPS5458182U | 1979-04-21 | |||
| JPS5489573A | 1979-07-16 |
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