It’s been a long time; I’d like to ask everyone for advice
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Regarding instruments and pipelines, what are the differences between PDIA, PIA, PT, PV, TICA, YIA, and TI? What kind of instruments do they correspond to? Even those who are not specialized in instrumentation should know a little about this, such as the types of level gauges. Please help me, experts~:loveliness:
I’m not an expert in instrumentation; my understanding is as follows: PDIA – differential pressure indication alarm; PIA – pressure indication alarm; PT – pressure transmission; PV – vacuum valve; TICA – temperature indication and control alarm; TI – temperature indication; YIA – indication alarm for a certain state
PDIA refers to the differential pressure indication alarm on the secondary instrument (control panel) or DCS. PIA refers to the pressure indication alarm on the secondary instrument (control panel) or DCS. PT refers to a pressure transmitter, located on-site. PV is the control valve used for pressure regulation, also located on-site. TICA refers to the temperature indication control alarm on the secondary instrument (control panel) or DCS, and it usually has an output for controlling valves. TI refers to the temperature indication on the secondary instrument (control panel) or DCS. YIA refers to the status indication alarm on the secondary instrument (control panel) or DCS, which is generally based on electrical signals