Schematic Diagram of a open tank DP level transmitter installation
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| Open Tank DP Level Transmitter Calibration |
Formulas:
Min range = SG x h + P0
Max range = SG x h + P 0
Example:
If an X height is 10 meters and there is fluid in the tank which has a density of 0.85 g / cm3 what the calibration range of the transmitter?
SG = 0.85
Min range = SG x h + P0
= 0.85 x 0 m + 0
= 0 mH 2 O
Max range = SG x h + P 0
= 0.85 x 10 m + 0
= 8.5 mH 2 O
The transmitter calibration Range = 0 to 8.5 mH 2 O
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3 comments
good evening sir,
what is SG,P0 plz tell me
Sir What is P0
Hi,
SG is the specific gravity of the liquid inside the tank, P0 is the pressure of vapor inside the Tank , if the Tank is open to atmosphere than P0 = 1 bara = 0 barg. In the case above you can see that he is using P0 = 0 barg in the calculation because it is said that in this situation it is an open tank.