We did find the problem and it was in the parameters of the DP transmitter. It had to deal with the square root and linear settings and values assigned to these parameters. By the way it was a prandtl tube I was using and I had it hooked to a yokogawa pressure calibrator, so I could get static...
I am using a pitot tube connected to a differential pressure gauge and I get the following readings. The static pressure (perpendicular) was connected to the low side and the total pressure (parallel) was connected to the high side of the gague.
Dp static Total
30Hz -...
Yes and thank you for finding that mistake with the ID for the tubing it caused us to re-evaluate what we can use. We are thinking of taking the restriction orifices out and replacing them with needle valves, because we have so many unknowns and some of the process values we got I don't trust...
I am in all three phase of the project. We have just finished design and we are currently in fabrication and in 3 months will be testing. Each 3/8" run is 25 feet in length and the 3/4" run is about 15 feet.
What is a slinted bronze filter? How exactly would this work and would you have to worry about contaminants over the long run? I will look it up and thanks for the option.
All runs are new and there are a total of 8 - 3/8" tubing runs that cool the bus bar. There are two zones per chamber and each zone has a positive and negative bus bar and the tubing is run on boths sides of the bus bar for a total of 8. From our bus bar heat calculation that mechanical...
Pertaining to katmar's question.
Is the 0.5 psi pressure drop the permanent pressure drop (i.e. are you designing a restriction orifice) or is this a flow measuring orifice with close tapping points?
Yes, it will be a permanent pressure drop with a constant pressure supplied from a header that...
You were correct I forgot to take the square root of the entire equation. Basically if I increased the pressure drop across the orifice I will lower my diameter. If I increased my pressure drop from 0.5 psig to 3 psig I would get a diameter of approx. 0.25".
Pressure (psi) = (Head * Specific...
Thank you for your response and clarification.
What I am trying to maintain is a 2 gpm flow rate, but it does not have taps. This flow is through a 3/8" SS .065" wall thickness tubing and I was going to use a swagelok union with orifice inside the union to control the flow. That is why I am...
Does anyone know who to size an orifice with the following parameters. What I am trying to find is the diameter of the orifice I need to have to drilled in a orifice plate in a swagelok fitting to allow 2 gpm flow with a .5 psig drop and the fluid is DI water. The value I came up with was 0.153...
