Interested to Buy Any Domain ? << Click Here >> for more details...
Guy's need your support,I want to measure closed tank level which is under vacuum -630mmHg using DP Transmitter, tank fluid density 1.38, Tank height is 7ft
- 4 Answers
- 6475 Views
- icl, I also Faced
- E-Mail Answers
Answer Posted / carl_ellis
A differential pressure transmitter is required to correct for vacuum pressure. The DP's low side is installed high up, tapped into the vacuum and the DP's high side tapped in near the bottom.
The DP transmitter's minimum range (LRV) is zero
The DP transmitter's maximum range (URV) is:
maximum level height (inches or mm) * specific gravity
Liquid level = measured pressure in water column units (inches or mm) / specific gravity
Many digital indicators just scale the 4-20mA to the desired level range; so a calculation involving specific gravity isn't needed.
For example:
4.0 mA = 0.0 inches level
20.0 mA = 84.0 inches level
Carl Ellis
Measure First
| Is This Answer Correct ? | 3 Yes | 4 No |
Post New Answer View All Answers
what is the procedure to callibrate temp controller ,pressure controller,etc. suppose a temp controller showing error 1.5 degree centigrate how can i minimize it.
Why all the drains(Gland sealing,ESV,Casing inlet etc) are directly connected to the flash tank instead of hotwell of the condensor in the power plant? My Email Id:naba02222@gmail.com
where proximity sensor installed on tank in loading arm application
Exothermic reaction./ endothermic reaction
What is the difference between conductive lined pipe and conductive unlined pipe? Why do we see that?
basic connection and principle of axial shift sensor n differential sensors in tubine describes n draw......
What is the diffrence between ff tx and non ff tx
What types of Instrumentation Related Questions can an Interviewer ask in a Telephonic Interview ?
How to work temperature gauge?
Dear Sir/Madam,im going to attend Hpcl written exams on feb 17th in instrumentation stream..can anyone send me the HPCL model papers and pattern of HPCL ....i ve not yet attended anything in HPCL...so i dont know how it comes...so just i need some model test papers and pattern ..pls help me friends...
which type of signal used in instrument?
What are the maximum packet size of: a) HART b) Profibus DP c)Profibus PA d) DeviceNet e) Foundation Fieldbus
What is Positive Calibration and Negative Calibration?
How an rtd work, and what volts/current goes to a rtd to measure the resistance?
How to erection of DCS Panel at site step by step
