Recommended sample conditioning

system for landfill application

This sample system is designed to bring

the low pressure landfill gas to the NGC at

an increased pressure (10-20 psig) for

injection into the analyzer.

The pressure is increased by a Di-Vac

pump. The operator can adjust the inlet

stream to an appropriate level of around

15 psig. Most of the sample stream will be

vented through the back pressure regulator.

It can be vented to atmosphere or

returned to the process stream since it is

at a higher pressure. The sample stream is

also passed through a sample

conditioning module which insures that

the NGC will be provided with dry,

uncontaminated gas for the analysis.