E8500 Instruction & Operations Manual
version 1.010
Page 18 of 45
The following components are mounted on the conditioning system:
1. Thermoelectric chiller. The sample gas enters this aluminum manifold from
the front panel. The condensed water is removed and collects at the bottom.
The dry sample exits towards the filters. The manifold is cooled by the Peltier
element, powered by electrical pulses of user-settable duty cycle. By cooling
the chiller below ambient temperature, any further condensation in the
analyzer is prevented.
The chiller will maintain the sample at a certain temperature below ambient
temperature to ensure that no further condensation takes place inside the
analyzer. You can control this temperature differential by adjusting the
CHILLER DUTY CYCLE, if necessary, as detailed below.
The duty cycle of the thermoelectric chiller is set at the factory to 75%. It
should not be adjusted unless when being used to measure a stack gas with
very high water content. It can be adjusted as follows:
1) Press the SETUP key. The SETUP MENU will be displayed.
2) Press the UP/DOWN keys until the cursor points to COOLER DUTY.
3) Press the OK key.
4) Use the UP/DOWN keys to set the power duty cycle.
5) Press the OK key.
Condensate
Pump
Condensation Filter
Sampling Pump
Chiller
Line
Filter
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