hswang2
Civil/Environmental
- Oct 27, 2006
- 53
Ths loop (P-065) is to control the vacuum level in the reactor by breaking vacuum
by nitrogen injection.The vacuum level is controlled by the PID controller PIC-065 which measured
vacuum level by means the pressure transmitter PIT-065 and control valve PV-065
The other loops (P-075) is to control the reactor pressure through nitrogen injection.
The controller PIC-075 measures and controls the reactor pressure by means of the process value of
the pressure controller PIC-001D that read pressure transmitter PIT-001D at the reactor top
and the control valve PV-075.
My question is following.
N1. In this graph, PT-065 send signal to PIC-065, and then send to interlock. But in other project,
someone draw PT-065 send sinal to interlock first, then PIC-065. Could anyone please explain me about
this in detail.
N2. How can we cotrol/calculate the vacuum level and why we have to break this vacuum level?
These are my question. sorry to bother you professional a lot, and thank you very much.
by nitrogen injection.The vacuum level is controlled by the PID controller PIC-065 which measured
vacuum level by means the pressure transmitter PIT-065 and control valve PV-065
The other loops (P-075) is to control the reactor pressure through nitrogen injection.
The controller PIC-075 measures and controls the reactor pressure by means of the process value of
the pressure controller PIC-001D that read pressure transmitter PIT-001D at the reactor top
and the control valve PV-075.
My question is following.
N1. In this graph, PT-065 send signal to PIC-065, and then send to interlock. But in other project,
someone draw PT-065 send sinal to interlock first, then PIC-065. Could anyone please explain me about
this in detail.
N2. How can we cotrol/calculate the vacuum level and why we have to break this vacuum level?
These are my question. sorry to bother you professional a lot, and thank you very much.
