Mechanism Of Double Wavelength Ir Sensor - Sanyo MCO-19M Service Manual

Mechanism for Double wavelength IR sensor
Infrared ray
Chamber
air
Contrast wavelength IR sensor CO2 measured wavelength IR sensor
4.3μm
Measured wavelength: 4.0μm
Measured wavelength:
Double wavelength (4.0 m adding to 4.3 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 zero calibration is commenced with every 4
2
hours, as previous models performed.
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