# How often to calibrate a Pressure Switch /Level Switch /Temperature Switch /Flow Switch?

**URL:** <https://forumautomation.com/t/how-often-to-calibrate-a-pressure-switch-level-switch-temperature-switch-flow-switch/978>\
**Category:** Calibration\
**Created:** [April 12, 2016, 12:48am UTC](https://forumautomation.com/t/how-often-to-calibrate-a-pressure-switch-level-switch-temperature-switch-flow-switch/978 "2016-04-12T00:48:39Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![denizen](https://forumautomation.com/letter_avatar_proxy/v4/letter/d/848f3c/32.png) [@denizen](https://forumautomation.com/u/denizen)\
**Post date:** [April 12, 2016, 12:48am UTC](https://forumautomation.com/t/how-often-to-calibrate-a-pressure-switch-level-switch-temperature-switch-flow-switch/978/1 "2016-04-12T00:48:39Z")

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**Calibration Interval for switches**

-Annual calibration is very typical for switches -If high accuracy and critical process,semi-annual or quarterly

Factors to consider for deciding calibration period

-Manufactures recommendation -Influence of environment -Criticality -Tolerance -History,Consistency with similar device

Refer - NCSL RP 1 standard for more information about calibration interval.

[http://www.ncsli.org/](http://www.ncsli.org/)