What is pressure,What is temperature,What is flow,What is level

4 Answers   Keltech, Petrofac,

---

how to measure oxygen which methods are using?

0 Answers  

---

which instrument is used to study the structure of phloem and xylem tissue?

1 Answers  

---

give eg of how I/P is used in control loops

0 Answers   CEPC,

---

why pressure 3-15psi is used as industrial standard and what is the reason

2 Answers   JAL International, UltraTech,

---

how can you set a zero and span of transmitter?

1 Answers   Rockwell,

---

what pressure transmitter?

8 Answers   Bhel,

---

What are continuances of connecting earthing and shield of branch cables (instrument to Junction box), at the same earthing pot provided on JB? Is it ok, or may produce some problem? 

0 Answers   Process Control Technologies,

---

If an Instrument has 550 ohm internal resistance and the cable used for that instrument is 0.5 ohm per meter resistance. If the voltage is 12volt.How much length cable can be used? Please tell me its Calculation formula.

5 Answers   MOL,

---

what is gas metering system? gas chromatograph? and gas compressors?

0 Answers   HPCL,

---

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

2 Answers  

---

HOW DOES SPECIFIC GRAVITY AFFECT LEVEL MEASUREMENT.

3 Answers  

---