S
Hi
We have many DPTs installed as flow transmitters along with orifices on pump discharge lines @ liquid ammonia service. The impulse lines are filled with glycol or some other material to create a wet leg and not to allow liquid ammonia to enter the impulse lines. But what we have observed, that with the passage of time, this wetleg liquid gets carried over and disappears. I have a feeling that since these DPTs are installed on pump discharge lines, therefore the venture effect is created whenever the pump is pumping the liquid ammonia. This is causing the wetleg liquid to get carried over with the process fluid.
So if this is the case, what engineering modification/practice you can suggest to solve this problem?
Thanks in advance!
We have many DPTs installed as flow transmitters along with orifices on pump discharge lines @ liquid ammonia service. The impulse lines are filled with glycol or some other material to create a wet leg and not to allow liquid ammonia to enter the impulse lines. But what we have observed, that with the passage of time, this wetleg liquid gets carried over and disappears. I have a feeling that since these DPTs are installed on pump discharge lines, therefore the venture effect is created whenever the pump is pumping the liquid ammonia. This is causing the wetleg liquid to get carried over with the process fluid.
So if this is the case, what engineering modification/practice you can suggest to solve this problem?
Thanks in advance!