Steam Hook Up

if you fill up (water) your impulse line via seal pot before opening the isolation valves, be sure there will be no expansion .

mount the DP lower than the tap off,or use a pigtail tube to ensure the lines are full of condensate.This will minimize expansion.

Before opening the valves to transmissor the seal pots must be filled with water. After this adjust the "zero supression/elevation" and open the valves to the process.

I am not exactly sure what you are trying to describe, but if the problem is expansion of a pipe or tube due to temperature increase,then bend a section of the tube or pipe into the shape of the OMEGA symbol and put in the middle of the line.This will absorb expansion/contraction without creating a stress riser.If it is the condensate line for a DP transmitter,be sure the line is totally full of condensate.Open the equalizing valve at the DP to allow lines to fill.

This steam pressure measurement is about anulus pressure of steam injection well and the tapping point is underground inside of the well. The transmitter can not be put below the tapping point in this case. Please advice.

>the tapping point is underground inside of the well. The transmitter can not be put below the tapping point in this case.

it isn't clear what distances are involved, but don't skimp on the size of the steam impulse tubing.

If the condensate pot or water line are exposed to freezing temperatures be sure to heat trace to protect against freezing during shutdown.

This hook up is ok .

There is one more issue here. The underground tubing will also expand due to heat by about 60 cm. I am suggesting a flexible hose of duplex SS for thsese thermal expansion in this hook up.Please confirm same can work witout any trouble.