# Working of Leveltrol

**URL:** <https://forumautomation.com/t/working-of-leveltrol/60>\
**Category:** Level Measurement\
**Created:** [October 2, 2014, 5:44pm UTC](https://forumautomation.com/t/working-of-leveltrol/60 "2014-10-02T17:44:09Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![instrumen](https://forumautomation.com/letter_avatar_proxy/v4/letter/i/65b543/32.png) [@instrumen](https://forumautomation.com/u/instrumen)\
**Post date:** [October 2, 2014, 5:44pm UTC](https://forumautomation.com/t/working-of-leveltrol/60/1 "2014-10-02T17:44:09Z")

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A Leveltrol in and instrument used for measuring the liquid level between two known points. The Leveltrol works on the buoyancy principal. Leveltrol has a float, which submerses proportionately with liquid level raise in the float chamber. The amount of submersion of the displacer depends on the liquid density, which produces a torque. The amount of torque produced in measured in terms of % of level.

Parts of Leveltrol: Float chamber, Float, Torque lever, Knife edge, Feedback Bellows, Air Relay, Restriction, Flapper, Nozzle, Feedback link, Density range, Action change lever, HP and LP flange,