Hi, everyone. Today, I am writing a technical specification to
instrumentation gas seal for a existing compressor.

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" We need monitoring the low-pressure leak-off, and a flow meter shall be
provided in the low-pressure leak-off line from each seal assembly. This
flow meter shall be of a type capable of
measuring the normal flow when the DGSs are in good condition
(reproducibility is important but high accuracy is not required) to enable
the condition of the DGSs to be monitored. However, it is essential that
this flow meter does not impose a significant pressure drop on the system in
the event of failure of the inner DGS.

NOTE: A possible type of flow meter which may satisfy the above
requirements is the type which operates on the principle of measuring the
convective heat loss from a heated element.
"
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Question:

- What type of instrument do you know with this technology? What reliable
manufacturer do you recommend?

 

hey, you should look on the thermal gas flowmeters maybe from eldridge(EPI) or sierra...
there are lots of companies in this matter.
they all provide measurement for normalm3 with no t and p measurement needet ans with a huge measurement range beginning at zero flow. They are often used for gas leackage detection.

regards
Claus