# What are the criteria for selecting level measurement instruments?

**URL:** <https://forumautomation.com/t/what-are-the-criteria-for-selecting-level-measurement-instruments/883>\
**Category:** Level Measurement\
**Created:** [March 20, 2016, 5:52pm UTC](https://forumautomation.com/t/what-are-the-criteria-for-selecting-level-measurement-instruments/883 "2016-03-20T17:52:05Z")\
**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:** [March 20, 2016, 5:52pm UTC](https://forumautomation.com/t/what-are-the-criteria-for-selecting-level-measurement-instruments/883/1 "2016-03-20T17:52:05Z")

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How to select a level measurement instrument which fits for your application.

Consider the following things

1.What is the material to measure 2.Contacting or non-contacting measurement required 3.What are the temperature and pressure ranges 4.What is the distance of measurement 5.Is it an open air or closed vessel application?

Application type - Level,Interface,Flow,Pump control,Volume,Weight

Physical arrangement - Process connection available (Nozzle length and width) internal geometry,external geometry

Application Criteria - Vapors,Dust,density,foam,viscosity,Specific Gravity

Electric Supply - AC,DC,4 wire,2 wire (loop powered)

Communications - 4-20,Modbus,HART,PA,FF,devicenet,Relays

Diagnostic desire - Local,PDM,Pactware,HART.

Area Classification - General Purpose,Intrinsically Safe,Explosion Proof