Co2meter CM-0155 Руководство пользователя - Страница 12
Просмотреть онлайн или скачать pdf Руководство пользователя для Регистраторы данных Co2meter CM-0155. Co2meter CM-0155 16 страниц. Co2 sampling data logger nema4
Печатать страницуSampling Data Logger User Manual
Calibration Procedure
To calibrate your unit, follow these steps:
1. Expose the unit to ambient air (assumed to be at 400ppm) or connect it to a calibration gas
bottle/cylinder (100% nitrogen or argon) with the appropriate demand regulator.
2. Wait 25 seconds to collect a sample. Write down this value as the "before" value.
3. Click the "Calibrate" button after selecting your calibration gas.
4. Wait 25 seconds again. This time, the unit will take a sample and use this data to adjust zero
values. The displayed measurements will reflect the new calibration value (0 or 400ppm).
5. Disconnect the calibration gas and wait 25 seconds. The newly displayed data will now reflect
the new sensor calibration. If the sensor is still operating outside of its specified range, repeat
this procedure. When the readings vary too greatly, the calibration will silently fail and may
need to be performed again.
0‐5%, 65%, 100% Sampling Unit with or without Data Logging
These units do not feature Automatic Background Calibration (ABC) algorithm due to the CO2 scale they
measure. To ensure the highest accuracy, we recommend calibrating these units with calibration gas
(nitrogen for zero, or CO2), close to the concentration being measured. Alternatively, a 0% or ambient
calibration can be performed.
To perform a calibration, attach the unit to your computer, power it and either expose it to atmosphere
or supply it with your calibration gas, fed with a demand‐based regulator.
Figure 9: Data logger calibration screen for 0‐1% CO2
CO2Meter
FIF
PAGE 12 of 16