Instruments for Impulse Lines

The reason for clogging can be due to surrounding cold atmosphere. The Transmitter for liquide service should be hooked up below the process line, as this is the basic principle of Hook up. Moreover if the liquide is hot crude oil, it should not clog. You can flush the impulse fully and can reconnect it.

High temperature and pressure seems to be unsafe for flushing , this is the reason that I want to know the standard of the impulse line so that one can work safely . also if crude is hot should not be clogged, this is why I want to keep the Impulse line as near as possible .But I can't work out without standards can u help me out from this problem

regards

find2am

Hi there,

The manifold should be double isolation and equalisation. This means you can isolate both the high pressure and low pressure impulse line. The valve in the middle will equalise the pressure between the high pressure and low pressure side of the transmitter.

Depending on the pressure and process - you might want to use a purge type of measurement. Failing this - you will need to get a safe filling medium that has a higher density/sg than the crude - this will ensure that the crude never gets into the impulse lines.

Regards,

Craig