Tyes of interface level measurement and how to use that technique for interface level measurement,

0 Answers  

---

What is the difference between HMI,SCADA and MMI,not abbrevation?

7 Answers   HCL,

---

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 to calibrate transmitter

3 Answers   Sabic,

---

How to convert m3/hr in tonnes/hr

2 Answers  

---

Related to control system, What is difference between 4-20 mA active & 4-20 mA pasive signal.

1 Answers  

---

how to calibrate transmitter online (in running plant)please explain correct procedure

4 Answers   Sabic,

---

can i use 1 sq mm insted of 1.5 sqmm cable cable length 600 mts under ground laying Cable carrying 24 vdc 4-20ma current

2 Answers  

---

thermocouple output is AC OR DC??

17 Answers  

---

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

0 Answers   Process Control Technologies,

---

Can anybody tell me the exact explanation for Functional calibration?When it should be done on process or on lab? Advanced Thanks

2 Answers  

---

what do u mean by compensation n pid tunning?in pid tunning what you tunned?is it possible 2 tune p i d

2 Answers  

---