The controls required for oil and gas separators are liquid level controllers for oil and oil / water interface ( three-phase operation ) and gas back-pressure control valve with pressure controller.
32.
A similar argument explains why bubbles on surfaces attract each other : a single bubble raises the liquid level locally causing other bubbles in the area to be attracted to it.
33.
By measuring the rotational speed and the distance from the center of rotation to the liquid level in the bent ends of the tube, the pressure reduction inside the tube can be calculated.
34.
The bodies are kept upside down to preserve the heads in case of liquid nitrogen shortage, since the dropping liquid level would first expose the feet and then the torso before the head would be left unfrozen.
35.
Bring to a boil, lower to a simmer, cover pot and let cook for 5 hours . ( Four is probably plenty and six won't kill the stock, either . ) Check occasionally to see if liquid level has fallen sharply.
36.
An alternative method is to move the spoon back and forth along a diameter of the vessel, which avoids any local concentrations and is, I suspect intuitively, the most efficient method, but generates more uncontrollable movements in the liquid level, risking spillage.
37.
Empty the shot glass containing the correct quantity of milk into the teacup . ( In principle, this could allow him to use 86.164's suggested'fingertip'method for checking the liquid level, " without " the risk of burns . ) talk ) 14 : 13, 24 June 2011 ( UTC)
38.
High-and low liquid-level controls normally are float-operated pilots that actuate a valve on the inlet to the separator, open a bypass around the separator, sound a warning alarm, or perform some other pertinent function to prevent damage that might result from high or low liquid levels in the separator.
39.
Use a vertical pressure vessel with a length diameter ratio of about 3 to 4, and size the vessel to provide about 5 minutes of liquid inventory between the normal liquid level and the bottom of the vessel ( with the normal liquid level being somewhat below the feed inlet ).
40.
Use a vertical pressure vessel with a length diameter ratio of about 3 to 4, and size the vessel to provide about 5 minutes of liquid inventory between the normal liquid level and the bottom of the vessel ( with the normal liquid level being somewhat below the feed inlet ).
