Answer Posted / hvkkumar,mtech instrumentation

for pressure increases the % of valve opening increase in
direct action .but in case of reverse actoin pressure
increases the % of valve opening decrease.

What is voltage regulator?

1110

---

What is the differerence between hysterisis and linearity.

2328

---

Describe the function of Accumulator into the Pump

1940

---

What is the difference between conductive lined pipe and conductive unlined pipe? Why do we see that?

3197

---

How to calibrate radar type level transmitter for interface level? Total liquid(liq.1 and liq.2), level both the liq individually? For. Both the liquid levels how the signal will go from transmitter to dcs? How to calibrate. Single radar 9:26:55 AM for 2 different liquids in a tank?

2349

---

How to control flow variations in magnetic flow maters..... When i will provide proper earthing?

2327

---

A length of steel pipe is used to carry sea water to a desalination plant. An adequate corrosion allowance must be specified and indicated in the piping specification, which affects the _________________________ of the pipe

2256

---

how do calibrate the valves.. with clear manual

2091

---

what is cold loop? difference between hot and cold loop?

2247

---

If a control valve is hunting means means if we are giving 50% to the cv, the cv will open at 51% then slowly slwoly it will reaches 49% , so what to do for solve this problem. The cv is double acting and mounted for anti surge operation, it having 4 nos. volume booster, one sov, one positioner, etc..?

2100

---

what is zero and span ?

1671

---

Name different types of bourdon tubes.

1148

---

which type of filter gives the constant phase characteristics?

1926

---

What is difference between “Fault Tolerant” & “Fault avoidance” PLC? Application where these system s are used?

3943

---

How to Calibrate Ultrasonic Level Transmitter in field

1364

---