The analyzer sample conditioning system (SCS) can be the source for many of the analytical errors involved in the natural gas, process, and petrochemical industries. Testing and verifying the performance of SCS would be of considerable value and should become a common practice to help ensure that an accurate compositional analysis is obtained. In order to carry out the SCS performance testing, a need exists for equipment that would allow a performance test gas (moisture standard, calibration gas, or specified blend) to be injected at the entrance of the SCS (i.e. probe tip) so that the entire SCS can be exposed to the test gas.

The Cal Port Housing accomplishes this task, and should be used in place of the standard Genie^® Membrane Probe^™ Housing when there is a desire to carry out both sampling and performance testing with only one probe housing. The design of the Cal Port housing is similar to the housing for a Genie^® Membrane Probe^™ (Model GP2 or GPR), with an additional "calibration" port on the side. The sample gas flow can be blocked by the housing’s "foot valve", allowing a test gas of desired pressure to be introduced through the calibration port and into the probe tip for the purpose of performance testing the entire SCS. The Cal Port housing can also be used to dry down or purge a system that has been contaminated with moisture or hydrocarbon liquid.