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Calibration Level Measurement

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

The DP level transmitter installed below HP tapping point with wet leg.Schematic Diagram of a Closed tank DP Level Transmitter with wet leg elevation zero remote mount Calibration
Closed tank DP Level Transmitter with wet leg elevation zero remote mount Calibration
Closed tank DP Level Transmitter with wet leg elevation zero remote 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 1 meter an X1, X2 is 3 meters and a height H is 4.5 meters, in the tank there is cairin 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 1) – (1 x 4.5)
= 1 -4.5
= – 3.5 mH 2 O

Max range = P High – P Low

= [(SGxX1) + (SGxX2)] – (SGxH)
= [(1×1) + (1×2) – (1×4,5)
= 4 to 4.5
= -0.5 MH 2 O

The transmitter Range = -3.5 to -0.5 mH 2 O

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4 comments

chinmay November 19, 2015 at 2:49 am

Easy to learn.. but all students needs to calculate the range by themselves.. beacause one printing mistake is there.

Reply
S Bharadwaj Reddy November 19, 2015 at 10:06 am

Hi, Please elaborate the details.

Reply
Seenivasagam November 27, 2017 at 7:31 am

In the max range calculation x2 height is mentioned as 2…Our actual range is 3…So let to be corrected in the value

Reply
umesh August 25, 2018 at 11:59 am

very useful

Reply

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