Requirements for the sourcing of pressure gauges and pressure transducers
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Question: In fine chemical enterprises, can the same pressure measurement point be used for both local and remote monitoring of the pressure in reaction vessels?
Take the pressures separately; otherwise, safety inspections pose a risk, especially with instruments that have interlocks.
There are various types of blockages that can occur at the measurement points; if it is a single blockage, problems may arise. Multiple display terminals for one testing point increase the leakage rate, which is also a factor that affects the testing. In the case of continuous production with pipe blind plates in place, it is possible to consider not making openings in the container body to locate sensors. For reference.
Thank you! The figure shown is from the automation installation manual. I would like to ask what application this type of connection is used for?
There are no specifications requiring that the pressure tapping points on the reactor, both those located on the reactor itself and those at the site, must be separated.
The catalog specifies the code HG21581; in the Safety Instrumented System standard 50770, it is clearly stipulated that different pressure tapping points must be used for interlock functions, while there are no explicit requirements in the standards regarding other DCS points.
The same point cannot be used; if blockage occurs, it will cause both the remote pressure and the on-site pressure to show false readings, posing a safety risk to the operation of the device
If it is merely a signal for measurement, monitoring, and recording, a dot can be used. If it involves alarms, interlocks, etc., it’s best to start from there.