DP Level Measurement

The differential pressure due to level is the liquid density multiplied by the height above the sensor multiplied by the acceleration due to gravity. Just scale the unit between 0%/4mA/minimum level and 100%/20mA/maximum level by following the manufacturer's instructions.

Please be more specific.

When you say 50% condensate, is that a level or a ratio of mixed liquids (eg condy + water) with a liquid interface?

Do you know your SG or does it vary?

Is the the top diaphragm always in air?

Actually I need to select range adjustment ( LRV and URV)of the DP Level transmitter of a Test Seperator ( closed Tank). It is showing 50% Level of condensate on level Glass. And the LP and HP side impulse tube of the LT is filled with Glycol.

filled Glycol SG is 1.05.

SG of Glycol is 1.26 isn't it???

As you have not mentioned the hight of LT from HP tapping point, I assume it 100mm then calibration of LT will be as below;

LRV= Effective Pressure on LT= Pressure on High side - Pressure on Low side

= (100 x 1.05) - (1300 x 1.05) = 105 - 1365 = -1260

URV= ((1200 x 1.0)+(100x1.05)) - (1300 x 1.05) = - 60

SPAN = URV - LRV = -60 -(-1260) = 1200 = distance between your HP & LP Points

Hope this clarifies your question.

Regards,

what is 1300, 1200 &100