Differential Pressure (DP) Level transmitter Installed Above Tapping Point

Open Tank Level Measurement (Single Seal Application) Transmitter installed above Tapping Point
Differential Pressure (DP) Level transmitter Installed Above Tapping Point
This calculation used for open tank level measurement with transmitter installed above 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:

Capillary-Seal-Liquid-Constants

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11 thoughts on “Differential Pressure (DP) Level transmitter Installed Above Tapping Point”

    • Definitely Yes, Possible. But in the above figure it is shown the transmitter installed above the tank i.e. only for understanding purpose. In Practice, the transmitter installed just above tapping point only not above the tank. Thanks

      Reply
  1. HI MR. S BHARADWAJ REDDY, GOOD AFTERNOON AND GREETING,

    WILL YOU PLEASE MASG ME ERS(ELECTRONIC REMOTE SENSOR ) TYPE LEVEL TXM, ITS INSTALLED AT FIRST PLATFORM OF DRUM. ITS BEFORE GOOD WORKING NOW, ITS START PROBLEM. HART NOT CONNECT AND DEVICE ALWAYS SHOW DEVICE NOT FOUND, TXM DISPLAY SHOW. WHEN EVER WE CONNECT HART.

    WILL YOU PLEASE GIVE ME ANY SOLUTION . ALL WIRE AND EARTHING IS GOOD, NO WIRE CUT ALSO. PANEL SITE ALSO GOOD, JB WIRE ALSO GOOD.

    Reply

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Differential Pressure (DP) Level transmitter Installed Above Tapping Point

 
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