Introduction
The Bacharach Flue-Gas Sample Conditioning System consists of the
following components:
• Probe with Peltier Cooler
• Condensate Pump with Water Trap
• Power Supply
The function of this system is to remove water vapor from the flue-gas
sample, thus preventing the formation of water droplets inside the
probe hose. If water droplets were to form inside the hose, a portion of
the gas sample could be absorbed by the water, thus resulting in lower-
than-actual readings of NO
2
and SO
2
.
Water vapor is removed from the flue-gas sample by passing the sample
through a Peltier Cooler where the sample is chilled, which in turn,
causes the water vapor contained in the gas sample to be removed from
the sample.
The water that was extracted from the gas sample is then pumped out
of the Peltier Cooler and into a water trap.
The now dry, conditioned flue-gas sample is then sent to its associated
combustion test equipment for analysis.
Product Leadership • Training • Service • Reliability
Figure 1. Flue-Gas Sample Conditioning System
Probe w/ Peltier Cooler
Power Supply
Instruction 24-9415
Flue-Gas Sample
Conditioning System
P/N 24-7224
Rev. 5 – June 2005
Pump
w/ Water Trap
