Sanyo MCO-19M - Mechanism of Double Wavelength IR Sensor

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Mechanism for Double wavelength IR sensor
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Double wavelength (4.0䃛m adding to 4.3䃛m) can be measured simultaneously in this IR
sensor.
Higher accuracy can be obtained by comparing both of measured wavelengths constantly in the
same temperature condition.
It is unnecessary to inject ambient air when CO
2
zero calibration is commenced with every 4
hours, as previous models performed.
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Chamber
air
Infrared ray
Contrast wavelength IR sensor
Measured wavelength: 4.0μm
CO2 measured wavelength IR sensor
Measured wavelength: 4.3μm