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Inst Tools > Blog > Calibration > Level Transmitter Calibration Procedure

Level Transmitter Calibration Procedure

Last updated: May 27, 2019 4:23 pm
Editorial Staff
Calibration Level Measurement
5 Comments
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Calibration Procedure

  1. Set up the guided wave radar level transmitter, HART communicator, power supply, and the multimeter as below (see below calibration setup Diagram).
  2. Check the configuration of the lower range value (0% level, 4 mA) and high range value (100% level, 20 mA). Make sure that the inputted data is as per datasheet. For example, the lower range value is 10 inch and the high range value is 35 inch (both of it are measured from the bottom of level transmitter probe)
  3. Fill the level transmitter chamber with water up to the 0% level. Read the level measurement in the transmitter LCD (or in the HART communicator). Set this condition as 0% level through HART communicator.
  4. Read the mA output of the transmitter by using a multimeter. Adjust (if any) through the HART communicator so that the output of the transmitter (on multimeter) is 4 mA.
  5. Fill the level transmitter chamber with water up to the 100% level. Read the level measurement in the transmitter LCD (or in the HART communicator). Set this condition as 100% level through HART communicator.
  6. Read the mA output of the transmitter by using a multimeter. Adjust (if any) through the HART communicator so that the output of the transmitter (on multimeter) is 20 mA.

Calibration Setup Diagram :

level-transmitter-calibration-procedure

Typical tools required:

  1. 24 VDC power supply
  2. Multimeter digital
  3. Water Supply Connection
  4. HART communicator
  5. Screwdriver set
  6. Wrench set

Note:

point number 1, 2, and 4 of the typical tools above can be replaced by a single multifunction calibrator available in the market. This typical maintenance procedure is just an illustration of how to regularly service a guided wave radar level transmitter for academic purpose only. This typical procedure shall not be used as day to day operation guidance. The vendor specific maintenance manual shall be used in detail.

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5 Comments
  • Stephen Salomane says:
    December 20, 2016 at 5:14 am

    Basic knowledge… very useful.

    Reply
  • Md Mehebub says:
    January 25, 2017 at 12:53 pm

    Thanks….

    Reply
  • bhagwan singh lodha says:
    March 5, 2020 at 6:18 pm

    If the transmitter zero and span are mismatching so what’s the procedure of the calibration.and zero trim.

    Reply
  • Mathias udoudo says:
    March 6, 2020 at 11:26 am

    Good

    Reply
  • abdelwaheb bedoui says:
    February 12, 2024 at 3:15 pm

    Dear Sir,
    Actually we Have new level transmitter’s Resmount 5300 Serie installed in the field,
    next time AS we will proceed to start them, I want to now the reference of Hart communicator for calibration these new level Transmitter’s.
    Thanks to Answer me ASAP, to proceed for purchase.
    Best Regards,

    Reply

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