Calibration Procedure - Ecom CN Manual

For best results, the gas concentration should be as close to the
expected levels of emissions as possible. Because each sensor is
linear through a nominal range, one calibration gas concentration can
be used for a reasonably wide range of emission levels. For
applications with extremely low or extremely high levels of emissions,
the sensors should be calibrated as close as possible to expected
concentration levels. It is also recommended that—for gas mixtures
that support oxygen content—a small percentage of oxygen (i.e. 2% -
5%) be present in the calibration gas to aid in the system leak check.
Fully charge analyzer:
Place unit on charge the night before you plan to use analyzer to
ensure full charge of battery.
Initiate analyzer:
1. Attach thermocouple, water trap, sample line, and power cord.
2. Switch on analyzer.
3. Select Combustion Measurement on main menu.
4. Select Fuel Type, press OK.
5. Select No for Data Processing.
6. Allow instrument to complete auto-zero sequence.
Perform air leak test:
1. Apply nitrogen gas to analyzer through probe/sample line (you
can use NO calibration gas that is balanced in nitrogen).
2. Allow gas to flow for 3 minutes.
3. After 3 minutes, check that O2 reading is 0.0% (spec is +/- 0.2%).
If reading other than 0.0 %, troubleshoot to source of leak and
correct.
4. Do not proceed to calibrate analyzer until air leak is corrected.
Put analyzer in calibration mode:
1. Select Control on main menu (press Escape/8 to return to main
menu if necessary).

Calibration Procedure