- #1
hanson
- 319
- 0
Pressure drops gradually...why??
Hi all.
I have got a system with an arrangement as follows:
A 4bar pressure supply, connected with a pressure regulator, connected to a container for water and then a flow meter.
I reduce the pressure fro 4bar to, say, 0.5bar by the pressure regulator and use the pressure to drive the water in the container to flow through the flow meter and then finally into a measuring cylinder. The tubing used in this setup is 6mm and the flow meter is aruond a few ml/min.
What happens is that the pressure gradually drops according to the pressure gauge on the pressure regulator. I expect that the pressure and flow rate delivered by this system would be very steady or constant since the variation of height in the container shall be negligible compared with the 0.5bar pressure.
There shall be nothing varying during the operation except the reduction in water level in the container...
So, why would the pressure gradually drops from 0.5bar and eventually to a very very low value as time goes? Do you guys have any idea? Thanks
Hi all.
I have got a system with an arrangement as follows:
A 4bar pressure supply, connected with a pressure regulator, connected to a container for water and then a flow meter.
I reduce the pressure fro 4bar to, say, 0.5bar by the pressure regulator and use the pressure to drive the water in the container to flow through the flow meter and then finally into a measuring cylinder. The tubing used in this setup is 6mm and the flow meter is aruond a few ml/min.
What happens is that the pressure gradually drops according to the pressure gauge on the pressure regulator. I expect that the pressure and flow rate delivered by this system would be very steady or constant since the variation of height in the container shall be negligible compared with the 0.5bar pressure.
There shall be nothing varying during the operation except the reduction in water level in the container...
So, why would the pressure gradually drops from 0.5bar and eventually to a very very low value as time goes? Do you guys have any idea? Thanks