any body pl suggest me the best type of transmitter for
level monitoring of a distillation still which consists of
highly corrosive and inflammable liquid.closed vessel
height=5000mm
especially in petrochemical industries
A flange is used for instrument connection for a system with a design temperature of 316C (600F) and a design pressure of 1000 kPa (145 psi). What is the class rating of the flange to be used for this application? Explain your answer
what is actual drum level and compensated drum level?
why temperature transmitter is showing ambienttemp.but 21.5ma. alarm AO showing at the display &how to sloves this problem.
what is the difference between(Flame proof/Explosion proof)& Fire proof instruments.Both are same or different & if different in which way because the transmitter which have approved ATEX flame proof enclouser but it use PTPE O ring & PTFE Head Gasket,so its (fire safe/fire proof)????????
How can we say that accuracy of measurement increases by using 3 or 4 wire RTD? because for example: If resistance of RTD element is say r ohms and Resistance of the cable from transmitter to RTD is R ohms And if 4 wire RTD is used, ____._____________________ R ohms | |_____._____________________ R ohms / \ / r ohms \ \ | |______.__________________ R Ohms | |_______._________________ R ohms Then the actual resistance measured will be: Total = r + R/2 + R/2 = r +R Ohms Note: r+R instead of r ohms. hence error
what is the difference b/w magnetic flow meter&mass flow meter? which one is best?
How will you change the action of a control valve?
why we use 24 vdc in instruments mostly?
What is scale factor of proximitor & unit of the viabration.
what are the programming languages used in dcs
how will you segregate the alarm levels in alarm management system during factory Acceptance Test
why used three wire in RTD.
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