Pro CO Carbon Monoxide Analyzer
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www.nuvair.com
2.6. Flow Adapter Cap
The Analyzer includes a Flow Adapter Cap with flexible tubing and flow orifice. It attaches to
the Sensor port and is sealed by an o-ring. It can be used to direct the gas sample flow to the
Sensor via one of two methods:
3.0 Calibration
Analyzer calibration must be verified on a weekly basis. Improper calibration may
result in an incorrect reading, exposing the user to dangerous levels of carbon
monoxide. Exposure to carbon monoxide 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 monoxide 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. Breathing gas applications require the use of a certified
CO calibration gas with a 10 ppm concentration and flow rate of 1 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.
Sample Flow Method
Flow is Delivered from
Low Pressure Source
via Flexible Tubing
Direct Flow Method
Flow is Directed to
Flow Orifice on Face
of Flow Adapter Cap
Vent Hole
