Swagelok^® Sample Probe Modules

Swagelok sample probe modules combine probes with valves to improve safety, purity, and timeliness. They feature probe interlocks to protect equipment and valve interlocks to improve the safety of operations.

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The Swagelok sample probe modules (SPM) are pre-engineered solutions for use in online process analyzers, measuring the concentration of key components in gas and liquid streams to maintain precise process control. The SPM consists of a welded sample probe (SPW) or retractable sample probe (SPR) and a block-and bleed sample probe valve (SPV). Using sample probes in conjunction with sample probe valves can improve safety as well as sample purity and timeliness.

Safety

Removing a process sample for an online analyzer can be difficult to accomplish safely because the process often operates at high pressures and temperatures. Using a block-and-bleed valve at the sample tap allows proper isolation of the process fluid and venting of the analytical system pressure through the bleed valve.

Sample Purity

It is critical to extract a sample that free of any particles that will damage the analyzer. Alternatively, installing a probe into the center of the process line helps ensure a representative sample is extracted; the probe also helps filter the process particulate.

Timeliness

To control a process effectively, an online analyzer must receive a sample quickly to enable timely process adjustments. One way to minimize time delay to the analyzer is to reduce the analytical system volume. Using a sample probe to extract a sample can greatly reduce system volume, as compared to collecting a sample with a nozzle.

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