Set Rx Gain
Set the receiver gain initially to low. Changing to high will give an approximate
tenfold (10x) increase in Dr.
Calibrate
The basic calibration of the instrument can be calculated from this routine. It is
preferable to conduct this operation with the plant shut down to ensure a zero
opacity within the duct. If this is not possible, however, the instrument can
calibrate to an estimate of the opacity the calibration target.
Set the calibration target either to an estimate of the opacity or to zero, and set
the desired number of cycles over which the calibration factor is determined (a
minimum of 16 is recommended). The calibration should now be run and the
display will show a count down during its execution. When the calibration is
complete the instrument will exit the calibration routine.
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