Online calibration

[all2win]

Hi All,
We have a 78 % H2SO4 storage tank whose Level transmitter is not working. (DP type). we are not able to isolate the valve so that we can calibrate the LT.We have sufficient quantity of acid inside which we dont want to drain. Is there any way to solve this problem or calibrate the LT?
thanx

all2win

 

[hacksaw]

use a dip stick to gage the tank (most common) or use a temporary bubbler with calibrated transmitter (most reliable and accurrate).

 

[khan101]

Is this transmitter a Smart type DP transmitter?

 

[nbucska]

If the xmitter failed and you don't want/can't replace it
you may be able to add a second level or pressure sensor and juct replace the output.

How much accuracy do you need? can you access the tank
and the acid without draining?


<nbucska@pcperipherals DOT com> subj: eng-tips

 

[all2win]

HI all,
it's not smart type transmitter.I dont want much accuracy and moreover i cant isolate the LT without draining.
i think i should go for the Age-Old Dip stick method.


thnx

 

[nbucska]

If you can insert a dip-stick, you can make an opto- or
capacitive sensor, too. If you could send me the measurements of the tank and quantify "not much accuracy"
I could help more...

<nbucska@pcperipherals DOT com> subj: eng-tips

 

[hacksaw]

sticking the tank never fails and comes calibrated from the factory! Certification results are extra of course.