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DP Type Level Measurement at transmitter installed below tapping point for open tank

Open Tank Level Measurement (Single Seal Application) Transmitter installed below Tapping Point

DP LEVEL TRANSMITTER BELOW TAPPING POINT CALIBRATION
DP LEVEL TRANSMITTER BELOW TAPPING POINT CALIBRATION

This calculation used for open tank level measurement with transmitter installed below tapping point

The formulas for calculating transmitter URV and LRV are as follows:

 HP Side or LRV or Transmitter 0%    =   Hmin.S1 + X.S2 
 LP Side or URV or Transmitter 100% =  Hmax.S1 + X.S2 

Where
S1  =  Specific gravity of tank liquid.
S2  =  Specific gravity of seal liquid.
Hmin = Equivalent head of water at minimum level.
Hmax = Equivalent head of water at maximum level.
X = Distance between transmitter and tapping point.

  NOTE:
 1. The Parameters H,X can be entered in any units like mmh20, inh20 but must be same
 2. If you are using direct tubing from tapping point to transmitter without filling any additional liquid (Like water) that means you are not using any special seal liquid, so S2=S1, Here Specific gravity of Process liquid only considers for both S1 & S2. Hence S1=S2.

The Following tables specifies the seal liquid constant values:

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Level Measurement 2319391390153584043

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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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