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Inst Tools > Blog > Level Measurement > Bubbler Liquid Level Transmitter Calculation

Bubbler Liquid Level Transmitter Calculation

Last updated: August 29, 2019 7:33 am
Editorial Staff
Level Measurement
3 Comments
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Bubbler Liquid Level Transmitter Calculation
Bubbler Liquid Level Transmitter Calculation

Image Credits : Rosemount

Let X equal the vertical distance between the minimum and maximum measurable levels (100 in.).

Let SG equal the specific gravity of the fluid (1.1).

Let h equal the maximum head pressure to be measured in inches of water.

Let Range equal zero to h.

Then

h = (X)(SG)
= 100 x 1.1
= 110 inH2O

Range = 0 to 110 inH2O

Level Transmitter Calculation

Source  : Rosemount

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3 Comments
  • Bernard says:
    July 11, 2018 at 2:13 pm

    Thank you for the information. How do one determine the amount of air flow from the rotameter to he pressure transmitter? Is there a calculation for this

    Reply
    • Muhammad Shafqat says:
      February 13, 2023 at 11:21 am

      As per my understanding, 40 bubbles per minute is standard.

      Reply
  • George says:
    September 16, 2020 at 11:50 pm

    It is my understanding that the purge rate isn’t critical. Typically set at 1-2 scfh.

    Reply

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