Nuvair Pro Trio, Руководство пользователя

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Pro Trio Analyzer Manual
Page
26
NUVAIR www.nuvair.com
10.3 Pro CO
2
Alarm
The Analyzer includes an audible alarm that is activated when the Sensor reaches 199 ppm
CO
2
or user programmed level. The alarm will not clear until the concentration of CO
2
drops
below user programmed level.
10.4 Pro CO
2
Sensor
The Analyzer uses an NDIR “non-dispersive infra red” CO
2
Sensor to measure CO
2
content in
gases. The Sensor is only replaceable by the factory, so the unit must be shipped to Nuvair for
service. The Sensor is designed for use at atmospheric pressure (0 psi). The gas mixture to be
analyzed must be regulated accordingly, and any potential for pressure or vacuum must be
avoided.
10.5 Pro CO
2
Calibration
Analyzer calibration must be verified on a weekly basis or when moisture and or
temperature swings take place. Improper calibration may result in an incorrect reading,
exposing the user to dangerous levels of Carbon Dioxide. Exposure to Carbon Dioxide
can lead to unconsciousness and death.
This Analyzer must always be checked against a calibration gas and used with gases
regulated and supplied at atmospheric pressure (0 psi). Use of gases at higher
pressures may result in incorrect readings and may damage the Analyzer. Incorrect
readings may expose the user to high levels of Carbon Dioxide resulting in personal
injury or death.
Checking Calibration or use of the Analyzer with a low battery may result in inaccurate
readings. Inaccurate gas analysis can lead to serious personal injury or death.
If the Analyzer has been subjected to a recent change in ambient temperature, allow it to
stabilize for one hour before checking calibration.
Verify calibration on a weekly basis or when the ambient temperature or moisture changes
dramatically. Breathing gas applications require the use of a certified CO
2
calibration gas and
flow rate of 1.0-5.0 L/min. The equipment to produce this flow is available from Nuvair. See
Spares and Accessories section.
To assure the greatest accuracy for other applications, use the calibration gas concentration
closest to the expected concentration in the gas being measured.