CODEL Energy Tech 401, Installation, Operation And Maintenance Manual

Page: 50 / 131

Page: 50
EnergyTech 401 CODEL
Operating and Maintenance Manual Monitoring Solutions

*Set the gain to a minimum by turning the D2 – detector trim potentiometer
within the signal processor fully CLOCKWISE – it is a 20-turn pot.

*Enter the DIAGNOSTIC MODE – DETECTOR LEVELS option, and display the
values of D2 & D1. Turn the trim pot ANTI-CLOCKWISE until the D2 level is
between 12,000 and 15,000. Allow time between adjustments for the readings to
settle.

*To ensure that the detector signal is not saturating, observe the saturation count
signal displayed next to the detector levels. If a SAT # of more than 0 is
displayed, turn the trim pot slightly to reduce the gain until a SAT # of 0 is
displayed.
 *Should saturation be indicated, with trim pot turned fully CLOCKWISE, reduce
the gain in the receiver and repeat the procedure.

repeat the steps above marked thus ‘*’ for the D1 level, using the D1 trim
potentiometer.

The gain of the detector circuitry is now complete.
If the duct is operating and the opacity levels are high, reduce the D2 level to about 8,500. This is to avoid saturation
should the opacity level within the duct reduce.
NOTE
The circuits are designed so that wherever saturation occurs (receiver or processor), it will always be detected by the
micro-processor. If the displayed detector levels cannot be set to within this band or saturation cannot be avoided,
the detector levels should be optimised at the receiver - see
Receiver Gain Adjustment.
NOTE