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Anonymous Poster

Level Calibration

04/18/2009 10:20 PM

hi everyone ,

what is the standard proceedure to calibrate capacitance type of leveltrol in workshop ?

we are calibrating with liquid (light naptha) but that doesn't work with water

I want to know the correct way of calibration

regards

Adil

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Guru

Join Date: Oct 2008
Posts: 42355
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#1

Re: Level Calibration

04/19/2009 10:24 PM

What does your supplier suggest? Do you have one?

Where is the spec sheet for your device?

If you don't have a clue what I'm talking about, why don't you just admit it up front?

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Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#2

Re: Level Calibration

04/20/2009 3:55 AM

Capacitance level gauges can only be used in connection with the liquid they are inteded for. Using them on other liquids, with different dielectric properties, will give errors in the reading with unexpected results, including vessel overfill.

Generally, capacitance should be seen as a last-resort technique for measuring level, as the slightest change in liquid properties can have a vast impace on the operation of the device.

It might be easier to go radar instead. It will certainly be less hassle.

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India - Member - Naveen Menon Engineering Fields - Instrumentation Engineering - Naveen Menon

Join Date: Oct 2007
Location: India
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#3

Re: Level Calibration

04/20/2009 6:21 AM

Hello

Which make is this. Do you have a manual , i could get you one if you provide the model no.

Different models have different cal procedures.

Also why use naphtha when you want to work with water , use water to calibrate as well.

Regards

Naveen

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