What exactly is the Welker® SCHS Sample Conditioning Heated System?

The overall function of this unit is to accurately condition a flowing gas stream (by managing pressure and temperature) and to protect the analyzer from liquids.

This three stage unit also known as a “Charlie Horse” is composed of a

3 Stage Protection System:


Stage 1: Liquid Eliminating Probe- utilizes an integrated liquid and sediment filtration to properly condition gas for the analyzer.

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Stage 2: Heated Regulator- accurate sample heat retention before the point of regulation to mitigate the Joule-Thomson effect* and prevents the gas composition from being altered.

Stage 2- Welker.png

Stage 3: Automatic Liquid Shut-Off- Contains a ball, where in the presence of liquid shuts off the system for analyzer preservation.


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These 3 components can be sold separately or together as one exceptional unit.

* Joule-Thomson Effect- is the temperature change of a real gas or liquid, when it is forced through a valve or porous plug while kept insulated so no heat is exchanged with the environment.


 More Information Can Be Found


Foothills and Welker Engineering

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