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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


Formulas: 
Min range = (SG x X1) - (SG x H)
Max range = [(SGxX1) + (SGxX2)] - (SGxH)

You can use our instrumentation tools for easy & online calculation of transmitter ranges.CLICK HERE.

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)
= [(1x0,5) + (1x2) - (1x3)
= 2.5 - 3
= -0.5 MH 2 O

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

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Comments

JOHN MULINDI:

This is a good explanation that is very helpful to students aspiring to pursue instrumentation at university or collage level.

بلال:

Thank you very much for the information

Anonymous:

is there any laser sensor[transmitter or switch ] and is it suitable for industrial use , if it is suitable what is the advantage and disadvantages comparing to ultrasonic or radar , thanks a lot for ...

Anonymous:

for controlling [start/stop] of pump which is the suitable ,radar or ultrasonic?
I am planning to use non contact switch

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