what do we mean by hook up drawing. what r the information we
get from it?
Answer Posted / gopi shukla
Hook-up drawing is a detailed drawing showing typical installation of instrument in a correct manner so that instrument operates properly (gives accurate indication and prevent any issued which could potentially affect the measurement such as liquid trap in gas impulse line).
Hook-up drawing indicates tubing slopes, position of instrument in reference to process tapping point, scope break between instrument vs piping.
There are two types of hook-up drawing:
Process Hook-Up
This hook-up drawing contains typical installations for instrument which connects to the process
Pneumatic Hook-Up
This hook-up drawing contains typical installations for instrument which requires instrument air such as control valve, actuated valve
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