EE872 Modular Probe for CO₂, RH, T and p User Manual
■ Operation Principle
●The EE872 is available in two versions:
◆EE872-M10...: The probe measures the CO₂ concentration. The sensing module is heated by factory default setting to prevent condensation. The CO₂ measurement value is available on the analogue output or on the digital interface.
◆EE872-M13...: The probe measures CO₂, RH, T and p, and calculates Td. Since per factory default the sensing module is not heated, the accurate measurement of RH and T is possible. In case the user activates the probe heating, the RH and T data is not available. The calculated Td value is still available. All values are available on the digital interface only.
●All versions provide CO₂ measurement T and p compensated.
●The CO₂ measurement is based on the dual wavelength/dual detector NDIR principle. Infrared light is led through the gas to be examined. One detector is tuned to 4.2 μm, which is the wavelenght absorbed by CO₂. The second detector is tuned to 3.9 μm, a wavelenght that is not affected by any gas. The CO₂ concentration is calculated trom the different outputs of the two according detectors
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User's Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2021/8/19 |
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v1.4 |
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953 KB |
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