what is the difference between signal cable and ontrol cable?

14 Answers   Essar,

---

what is the equation for gas flowmetering? whic includes gas flow, pressure, and temperature.

2 Answers  

---

Controller not working in auto mode?...what are the problem can occur...Pls explain

1 Answers   Aramco,

---

how to calibrate corollaries (Mass flow meter)?

0 Answers   Honeywell,

---

if change the pid in D value so what action.

2 Answers   Siemens,

---

In a ball valve which require 24v dc supply to operate, whose solenoid valve doesn't have any + or - indication, how can we make wiring connectionto solenoid valve?

1 Answers   Process Control Technologies,

---

LADDER LOGIC Can any body state Logic on following condition Instructions to use 1-XIC 2-XIO 3-Output ONLY Program Push 1st button On - 1st lamp should On Then Push 1st button Off - 1st Lamp Should remain on Push 2nd button On - 1st lamp should Off and 2nd lamp should On Then Push 2nd button Off - 2nd Lamp Should remain on.

4 Answers  

---

How is flow measured in square root?

0 Answers  

---

if drum level is low what is interlock? i mean we put interlock to fd fan or id fan ?

4 Answers  

---

Dead weight tester & comparator for calibration , which is more accurate , what is the application.

1 Answers   Bapco Bahrain Petroleum Company,

---

what is shutoff dp? why is it important for selection of a control valve?

1 Answers  

---

What is a PID?

6 Answers  

---