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Calibration Level Measurement

Closed tank DP Level Transmitter with wet leg elevation zero direct mount Calibration

The DP Level transmitter installed very near to HP tapping point and configured in wet leg.Schematic Diagram of a Closed tank DP Level Transmitter with wet leg elevation zero direct mount Calibration

Closed tank DP Level Transmitter with wet leg elevation zero direct mount Calibration
closed-tank-dp-level-transmitter-with-wet-leg-elevation-zero-direct-mount-calibration

Formulas:

Min range = (SG x X1) – (SG x H)

Max range = [(SGxX1) + (SGxX2)] – (SGxH)

Example:

If the height is 0.5 cashew an X1, X2 is 2 meters and height H is 3 meters, there is fluid in the tank which has a density of 1 g / cm3, what is the range of calibration on the transmitter?

SG = 1

Min range = P High – P Low

= (SG x X1) – (SG x H)
= (1 x 0.5) – (1 x 3)
= 0.5 to 3
= – 2.5 mH 2 O

Max range = P High – P Low

= [(SGxX1) + (SGxX2)] – (SGxH)
= [(1×0,5) + (1×2) – (1×3)
= 2.5 – 3
= -0.5 MH 2 O

The transmitter Range = -2.5 to -0.5 mH 2 O

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1 comment

karan bansal January 23, 2016 at 11:35 am

Pls tell what is difference b/w in “Closed tank DP Level Transmitter with wet leg elevation zero direct mount Calibration” and “Closed tank DP Level Transmitter with wet leg Zero elevation Calibration” in field installation.

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