why can't we use 5-20mA standard or some other instead of 4-
20mA?
- 6 Answers
- 13222 Views
- Emerson, I also Faced
- E-Mail Answers
Answer Posted / jay
4 - 20 ma is used because of Live Zero.
| Is This Answer Correct ? | 3 Yes | 3 No |
Post New Answer View All Answers
I WANT SECURITY PAPER MILL, HOSHANGABAD TEST PAPER.KINDLY SEND TO MY MAIL ID
Can anyone send most commonley asked Instrumentation questions and answers in cement industry please?
how can use ram
A DP transmitter is used to measure the level of an open tank. The drain line of the tank is connected to a control valve, and is configured as, if the level of the tank is 90% the valve should get open 10%. And if the tank level is 10%, the valve should get open 90%. Draw wiring diagram and explain how to configure DP transmitter and control valve using HART communicator. If the span error at output is 1%, what will be the %opening of the control valve at 60% level of the tank?
what different types of problems do occur while doing instrumentation commisioning and how to solve them? please explain in detail
Specific gravity.
What is stripper & spilitter ? Diffrence in this.?
What are primary elements of measuring pressure? Which type of pressure can be measured by these elements?
I have completed B.E. Instrumentation & control in 2009. i have 3 year industrial job experience in chemical plant.now, I want to join M.E. in external. so, Plese say easiet way and good institute name.
Operational amplifiers
i want to know the interview format fot gail, instrumentation. pls answer me in habib.sami1003@gmail.com
how is work pressure switch& level switch?what is the principle of this?
what is the difference between magnetic flow meter and mass flowmeter
how to measure oxygen which methods are using?
POSSITIVE PULSE IS APPLIED TO AN INVERTER INPUT.THE TIME FROM THE LEADING EDGE OF THE INPUT TO THE LEADING EDGE OF THE OUTPUT IS 10 ns. THE TIME FROM THE TRAILING EDGE OF THE INPUT TO THE TRYLING EDGE OF THE OUTPUT IS 8 ns. WHAT ARE THE VALUES OF tPLH and tPHL?
