# How to calibrate displacer level transmitter?

**URL:** <https://forumautomation.com/t/how-to-calibrate-displacer-level-transmitter/2744>\
**Category:** Calibration\
**Tags:** calibration, instrumentation\
**Created:** [November 29, 2017, 3:52pm UTC](https://forumautomation.com/t/how-to-calibrate-displacer-level-transmitter/2744 "2017-11-29T15:52:24Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![sivaranjith](https://forumautomation.com/letter_avatar_proxy/v4/letter/s/ba9def/32.png) [@sivaranjith](https://forumautomation.com/u/sivaranjith)\
**Post date:** [November 29, 2017, 3:52pm UTC](https://forumautomation.com/t/how-to-calibrate-displacer-level-transmitter/2744/1 "2017-11-29T15:52:25Z")

</div>

[Displacer level](https://forumautomation.com/t/how-displacer-level-gauge-works/2588) transducers are used to measure the level of a tank at an isolated location to where extending wirelines are expensive. Here we are looking into the calibration of displacer level transmitter. [Calibration](https://forumautomation.com/t/what-is-calibration-and-general-calibration-procedures/2600) is done using the zero and hundred percentage weights corresponding to the weight of the displacer.

 ![displacer level transmitter](https://cdn.forumautomation.com/original/2X/c/c6332d4eb575da9ac8dfb71babb3226d95de12af.png)

We require a multimeter, weights that corresponding to the weights of the displacer and tools requires adjusting the zero and span.

> **Procedure:**

- Take a weight that weighs same as the displacer weight. Disconnect the displacer from the torque tube and connect the weight.

- Reading of the transmitter should be the 4mA for zero level. If the reading is above or below 4mA then it should be corrected using zero adjusting screw.

- Increase the level to maximum, the transmitter reading should be 20mA. Adjust the span adjustment to correct the transmitter.

- Remove the weight and connect the displacer to the torque tube, do the same procedure again with the displacer weight to confirm the correctness.

- Adjust the span and zero to correct the measurement.

[Displacer Level Transmitter Calibration Calculation](http://www.automationforum.co/2012/07/how-to-calibrate-displacer-level.html)