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Active Contributor

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Remote Seal Level Transmitter Calibration

01/13/2015 4:16 AM

please help me for remote seal (dual) level transmitter calibration of a closed tank having 0.7kg/cm2 gauge pressure, 135 C process temperature, fluid specific gravity 1.07, high pressure side capillary length 13ft, low pressure side capillary length 13ft, low side capillary is installed at top of tank, high side capillary installed at lower at tank, difference between low and high flanges is 156'' (inch), process variable 150'' (measuring range) please suggest for LRV, URV and span

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#1

Re: Remote Seal Level Transmitter Calibration

01/13/2015 7:43 AM

Put in what it says on the Instrument Specification Sheet or in the Instrument Schedule, Mildred. That's what those design documents are for!

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#2

Re: Remote Seal Level Transmitter Calibration

01/13/2015 8:15 AM

http://www2.emersonprocess.com/siteadmincenter/pm%20rosemount%20documents/00816-0100-3206.pdf

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#3

Re: Remote Seal Level Transmitter Calibration

01/13/2015 8:25 AM

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Guru

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#4

Re: Remote Seal Level Transmitter Calibration

01/13/2015 9:43 AM

Your list of conditions/properties is missing two critical data needed to calculate the transmitter's LRV and URV.

What is the specific gravity of the fill fluid?

Finding that requires

- decoding the model number to find out which fill fluid is being used. One of the digits identifies the fill fluid.

- finding the specific gravity of that fluid.

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Guru

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#5

Re: Remote Seal Level Transmitter Calibration

01/13/2015 10:23 AM

Every thing so blurry and every one so faint, and everybody's empty and everything is so missed up --Puddle of Mudd

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Guru

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#6
In reply to #5

Re: Remote Seal Level Transmitter Calibration

01/13/2015 2:46 PM

Puddle of MuddTry clueless.

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#7

Re: Remote Seal Level Transmitter Calibration

01/14/2015 1:24 AM

First of all the Specific Gravity(S.G.) of the Capillary is not indicated or there is a mix-up in the S.G. of the fluid inside of the vessel. There is a capillary fill fluid known as DC-704 which has a Spec. Gravity of 1.07 (is this a coincidence with noted fluid in the question ?) or is the S.G. of the vessel fluid not indicated.

I really don't think the vessel fluid is 1.07 but if this is true then the following answer is;

LRV = -166.92

URV = -6.42

Span = 160.5" w.c.

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Active Contributor

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#8
In reply to #7

Re: Remote Seal Level Transmitter Calibration

01/18/2015 5:06 AM

ok thanks to all, and please closed the topic

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