Universal Analyzers 500 series User Manual page 10

Description and Principle of Operation
DESCRIPTION
A gas sample pump may be provided as part of the sampling system. If the pump is placed ahead of the sample cooler, it
should be provided with a heated head to avoid the condensation of water vapor. If the sample pump is placed after the
sample cooler, drawing the sample through the cooler, the sample has been dried, and a standard, non-heated pump may
be used.
A means to control the flow of the sample through the system should be available and visible to the operator. This may be
accomplished through the use of pressure regulators with gauges, flowmeters, and/or flow control needle valves.
Condensate removal from the heat exchanger(s) within the Sample Cooler can be accomplished through one of the
following methods:
1. A continuously running peristaltic tubing pump.
2. Installing the heat exchanger as a bypass condenser, pulling excess sample through with an eductor.
3. Using float drain traps similar to a steam trap. This requires the sample within the cooler to be at a positive pressure.
4. Use of drain pots on level control with a removal pump.
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MAN.500.REVD.06302015