Range of LT

A range of 500mm of water will do just fine.

Hi,

URV and LRV can be calculated using the following formulas:

LRV= PH-PL (level height is at zero percent level)

URV= PH-PL (level height is at 100 percent level)

P=h X S.G. (p=pressure, h=height, S.G.=specific gravity)

PH= pressure on high side

PL= pressure on low side

Thank you

hi dharam, to find the value of lrv and urv you must first understand the requirement of process like what should be the minimum level (there might be some pump tripping) or what should be the maximum level so that suction valve start. You can have your lrv and urv 0 and 500 mm but that might not be required by your process. So it is better to talk with your Process people.

ok, but my lrv range is -500mmwc and urv is 0, lt is working fine.

HI,

Is the low side of the D/P transmitter connected to the bottom of the tank?

or

Is the low side of the D/P transmitter connected to the top of the tank but it's used as wet leg filled with liquid of a S.G. equal to 1?

If you are using one of these two scenarios then it's possible to have URV=0mm of H2O and LRV= -500mm of H2O

Thank you