CODEL Energy Tech 401 Installation, Operation And Maintenance Manual page 63

4.8.1.24 Water Vapour
4.8.1.25 Reset Averages
Confirmation is requested before the averages are reset.
4.8.1.26 Calibrate
Issue: A Revision: 1 Date: 24/07/19
An 'across the duct' monitor measures the gas concentration under wet
conditions, that is, unlike a sampling system, the gas has not been
preconditioned in any way before the measurement is made.
To normalise it to dry conditions, when the water vapour present is of a known
and relatively fixed level, set the standard level to DRY, and use a fixed value in
the keypad option representing the expected water vapour produced for the fuel
type. If the measurement is not to be normalised for water vapour set the
standard level to WET.
The average values that are currently held in the averaging stacks will be
nonsense as commissioning has not yet been completed, these therefore need
resetting using this option. This process will erase the current average that is
held in all of the averaging stacks. Select this option by pressing the ENTER key
and using the Arrow keys.
NOTE
If this option is selected after the instruments' first commissioning, all data in the
averaging stacks is reset, and the data for as much as the last 30 days will be lost.
From this option the two detector levels may be displayed and a basic calibration
conducted. During Set Detectors ensure the gas cells are not moved, this gives
an immediate response for setting up the detector levels. The basic calibration of
the instrument is set by a 'CAL FACTOR' which is calculated during a calibration
routine. Press the ENTER key while this is displayed and the following options are
available
Ref: 100606
Section 4
Commissioning
Page: 63