Why an electromagnetic flow meter cannot be used for gases,
steam and oil flow measurements?
- 4 Answers
- 8734 Views
- I also Faced
- E-Mail Answers
Answer Posted / rajesh l parmar
Electromagnetic flow meter works on a principal of
faraday’s law or electromagnetic induction which states
that when a current carrying coinductor moves through a
stationary traverse magnetic field, then e.m.f. is induced
between the ends of the conductor and this e.m.f. is
proportional to relative velocity between conductor and
magnetic field
E = BLV where
B = magnetic induction
L = length of a conductor
V = velocity of the conductor relative to the magnetic
field
It consists of a flow tube inside a pipe which carries a
fluid flow. So when the fluid is passed through the flow
tube, it is visualized as a current carrying conductor
having a length equal to inside diameter of the flow tube.
Now the gas, steam and oils are having low electrical
conductance. So no E.M.F. can be generated in such case. So
electromagnetic flow meters can not be used for metering
gas, oil and steam.
In general electromagnetic flow meters can only be used to
measure the flow of fluid which are sufficient conductive
to generate e.m.f.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Explain how is waste heat boilers categorized?
What is some good advice for specifying allowable pressure drops in shell and tube exchangers for heavy hydrocarbons?
What is the angle of repose and what are its applications in the chemical industry?
how can i prepare for gate chemical in kolkata
Explain what are the criteria involved in choosing mass balances for components?
What is the average salary for chemical engineers?
PLEASE ANY ONE READ THIS MESSAGE ANSWER ME AT MY EMAIL ID surendrasaroj18@gmail.com sir i am prepairing for section engineer exam taken by railway my branch is chemical engineering i want previous paper of chemical engineering of section engineer exam taken by railway. please answer me as soon as possible thankyou
can anybody give me syallbus of chemical engineering for section engineer in railway.
MY generator water cooler inlet line height - 11 mtr inlet water line height - 7 mtr water come into the line from overhead tank, O/H tank height - 20 mtr the first tapping in the inlet line is 2" line which down to 4 mtr level plateform., second tapping in inlet water line goes to a pump 6" line installed at 4 mtr level plateform, pump capacity 200m3/hr, head- 30 mtr, hp-40. the outlet of pump of 6" water line connected to a header of 6 mtr long of 6" line, on this header the six tapping are connected, 4 nos. 3" line goes to 11 mtr height water cooler the pressure of the line is 0.15 to 0.25 kg/cm2, 2" and 4" pipe line connected to a cooler at 4 mtrlevel plateform. my question is, at 11 mtr height level the quantity of water and flow is not sufficient for my cooler, the temp. of cooler is rises much more. you are requested to suggest the modification of pipe line/ pump for take more water flow and pressure (desired pressure is 1 kg/cm2)
Define "good" cooling tower water?
Explain the procedure to estimate the friction factor involved in heat exchanger tubes?
Hi, I am in need of interview questions from Engineers india limited in chemical engineering.if any one has kindly post it to me soon.
hi sir/madam i need placement paper of last years of DRDO in chemical sream...... send me the question paper as soon as possible on my email address praveen.zone@gmail.com
How can one determine the particle size distribution for a given bulk solid?
Explain the factors involved in considering the choice of dry screw compressor?
