Flow Loop

21-2-2011

                            Today 7 of us gather in PI lab for testing of control valve V-2 (Single seated ) and  V-1 (Double seated) and calibration of I/P converter.

Process Flow Loop

                         I/P Calibration :- We have checked 3 I/P converter in which non of them have span adjustment screw. We have opened one of them and checked its assembly. But we don't get how to repair its span adjustment screw.

                         But  one of them gives us 14.11 psi reading on "Digital manometer" for 20 mA from current source.So we have marked it with red coloured tape and marked "OK".

                         Control Valve Testing :- We have tested V-1 and V-2 (In above Dia.). Where V-1 is double seated valve and V-2 is single seated equal percentage type valve.

                         We have guided  DPT wire in proper manner to the JB1 and we are going to purchase guiding clips for pneumatic signal lines.

We have removed one open wire from "JB1 rack no.1 connection no 9 and 10" and let it on JB1.