Answer Posted / b0nz0

There are numerous types of both gauges.
The most common type of pressure gauge is the Bourdon tube.
This consists of a 'C' shaped tube closed at one end. When
pressure is applied to its open end, the tube tries to
straighten due to its oval cross section. This movement is
amplified by a mechanical linkage and gears to give
sufficient movement on a pointer.
One type of temperature gauge also uses a similar principle
where the Bourdon tube is part of a sealed system which is
filled with a fluid. The fluid expands with increasing
temperature causing the pressure in the sealed system to
increase.
Another common type of temperature gauge is the bi-metalic
gauge which depends on the difference of expansion between
two dissimilar metals. The bi-metalic element is
constructed as a helix to give sufficient rotation of the
pointer.

What is Predictive Maintenance

1168

---

What is the cascade control

1419

---

HOW CREATED LP & HP PRESURES IN DRUM FOR DRUM LEVEL MEASUREMENT!

1867

---

Draw block digram for well head from well to shipping pump?

2173

---

Positioner usage.

1934

---

Why do we floating DC in DC system.

2898

---

what is surge and how is it prevented, what is the purpose of bypass valve across AS valve.

1974

---

What care will you take in the installation of control valves,SCADA,DCS and FOC in Oil and Gas Project?

2128

---

what is intrinscily safe system and where we use?

2526

---

steps for installing orifice plate?

1847

---

What are the materials available to prepare individually for competetive exams in Instrumentation field? Plz reply...

2090

---

few questions on RS 232,1 question on relationship of impedance and turns ratio, many questions on flowmeters

2032

---

how to calibrate 0- 150 psi presure gauge by dead weght tester

2017

---

what is wave length were using ?

1897

---

give me all the details about the interview and which type of question being asked

2225

---