In instrumentation standard we use 4 to 20ma for transmission , why cant we use 3 to 19ma ?

1 Answers   NSH,

---

what is function of DCS , and how is it work , explain with difination

1 Answers   Bapco Bahrain Petroleum Company,

---

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

0 Answers  

---

how does we calibrate a square root flow transmitter ,give an example and explain it step by step like range calculation , calibration hook up series connection , zero check , and how to apply pressure , and if not geting proportional output then what should we do ?

0 Answers  

---

3element

2 Answers  

---

What is SCR?

9 Answers  

---

What is the Flow rate ?

2 Answers  

---

Where is wet leg is used?

0 Answers  

---

how to calculate orifice sizing? and tell me if pipe size bet 50mm t0 200mm then we can use pipe flange??? and above 250mm pipe size should i use D & D/2 Flange? is it right or wrong?

0 Answers  

---

What is the exact output of eddy current proximity probe? For vibration mesurment?

2 Answers  

---

When doing a liquid seal on a differential flow transmitter , most of the time the sealing liquid will be heavier then the process fluid. For wich application will the sealing liquid be lighter than the process fluid if transmitter is mounted below the process line.

0 Answers   Chevron,

---

If the average power during generation is zero, why do the analog meters have + and - ?

1 Answers   Siemens,

---