What do the primary and secondary meters on the device refer to?
Thread Content
I still don’t understand what the primary and secondary meters on the device refer to. Please, fellow travelers, help me figure this out! ! Thank you
Reply to 1# „Yu Lin Qian: Those installed on-site and in contact with the medium are primary instruments, while those mounted on panels and transmitting signals to the control room are secondary instruments.
A primary meter is the meter at the site, such as the actual value of pressure; a secondary meter is the value displayed on the DCS as a result of measurements.
There are still questions about this topic? It’s not for completing a task, is it? Just ask your master!
It’s not to complete a task; I was a bit unclear before, just trying to confirm.
Primary instruments are the meters located at the site and in direct contact with the medium, while secondary instruments are the meters displayed on the DCS.