Answer / guest

FLOW =K'SQRT(DELTA"P")

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?

0 Answers  

---

-200mmwc to 500mmwc range transmitter have there 4mA is -200 and 20mA is 500.what is the range in 12mA?

5 Answers   NCC,

---

I want to apply for the universities in US,but i got the GRE score of (650+300=950)TOEFL 69/120.Is this score sufficient for applying universities please i am married i need to go to US because my husband didn't get H1 yet.please send me suggestion

0 Answers  

---

what is the use of shield cable?

2 Answers  

---

what is dry leg and what is wet leg?

3 Answers  

---

procedure to commission a drum level transmitter

1 Answers  

---

can i calibrate DP transmitter online (while Tx in Service) if yes ,how?

1 Answers   CEPC,

---

how we are selecting instuments by differentiating certain instruments in 4 to 20 ma range and certain in 1 to 5 v dc

0 Answers  

---

what is the zero elevation and zero supresstion in level measurement, how can use it?

2 Answers   GAIL,

---

what is mean of 3 by 2 automation ?

5 Answers  

---

Which type of pressure can be measured by primary elements?

0 Answers  

---

what is PID n give me brief info. about P&I&D.

2 Answers  

---