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Noor
Active Contributor

Join Date: Dec 2007
Posts: 13

Level Measurements

05/01/2013 12:34 AM

We want to replace float displacer as original float damaged and weight is 17kg in air RANGE IS

RANGE

1219MM

and new float weigh is 1.6 Kg . This is for oil and water process and as Safeguarding level switch On/ OFF and not analogue. The length of old is 120mm and new length of displacer is 122mm and range 1219mm. switch is Magnetrol and SS displacer

After replacing new displacer with 1.6 Kg and fluid SG 1.07 will make in change in tank level measurements ?

how to ensure the level is measured in tank as previous one. Please share you view
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PWSlack
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.
Posts: 32175
Good Answers: 839
#1

Re: level measurments

05/01/2013 3:30 AM

If the float is being changed like-for-like, then don't worry; chicken curry.

If the float is being changed for something else, then the instrument may need re-ranging, which is a job for an Instrument Technician at site.

Make sure the process is fully documented.

Is the instrument manufacturer on-board with all this or is it a home-brew-get-out-of jail-free sort of task?

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Noor
Active Contributor

Join Date: Dec 2007
Posts: 13
#2
In reply to #1

Re: level measurments

05/01/2013 4:31 AM

PWSLACK,

Thanks for feedback. [ don't worry; chicken curry]

the concern the float weigh is different from new one, and it it bough from Magntrol factory is not home made.

How to re-range inst tech dose not know?
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PWSlack
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.
Posts: 32175
Good Answers: 839
#3
In reply to #2

Re: level measurments

05/01/2013 4:41 AM

Follow the manufacturer's recommendations, either by telephone or in the manual. The manufacturer knows more about this equipment than any number of CR4 readers, so make that telephone call.

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 "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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Carl_E
Power-User

Join Date: Nov 2009
Posts: 335
Good Answers: 63
#4

Re: Level Measurements

05/01/2013 10:13 PM

You don't mention which Magnetrol level instrument you have, so I picked one model at random, opened the manual

http://literature.magnetrol.com/5/48-635.pdf

and found this very clear and understandable statement:

Why don't you try looking up the procedure in the manual for your model?
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Carl_E (1); Noor (1); PWSlack (2)

Previous in Forum: Measurement of Level for 100 % H2so4 Liquid   Next in Forum: Specific Weight in ISA S750.1 for Control Valve Sizing

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