Answer / veer yadav

When our measurement value is increasing and controller output is also increa. Then it is called direct acting and if our measurement value is increasing but controller output is decreasing then it is called reverse acting ...

Answer / neel

According to Controller
Direct action : input increase than output increase
Reverse Action : input increase than output decrease

According to Control valve
Direct action: Air to close
Reverse Action: Air to open

IF TX SHOWS SLOW RESPONSE, WHILE A CLOSE LOOP AND WHEN WE PUT THE CONTROLLER ON MANUAL THE PROBLEM RECTIFIED, SO WE CAN SAY THE PROBLEM IS IN

1 Answers   IFFCO,

---

what's the minimum level required of SIL (safety integrity level)to use fire and gas system?

2 Answers   L&T,

---

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

1 Answers   Bapco Bahrain Petroleum Company,

---

ON RADAR INTERFACE LEVEL TRANSMITTER IF DI-ELECRIC IS WRONG WITH CONTINIUS PROCESS THAN HOW CAN INDENTIFY OR HOW CAN I PUT NEW DI-ELECTRIC VALUE?(ROSEMOUNT-TDR-3300-COXIAL PROBE TYPE)

1 Answers   Chevron Phillips,

---

How to calibrate smoke Dectector

0 Answers   KOC,

---

How signals can be taken through modbus?

1 Answers  

---

Reasons for using current as signal

1 Answers  

---

explain key exchanges in all security modes WPA,WPA2,TLS?

0 Answers  

---

why we require Differential pressure?Why we use Orifice Plate?

3 Answers  

---

what is easiest way to read STL language in PLC?

0 Answers   LB Industries,

---

what is the difference between impact plate n coriolis type solid flow meters n how they works....n which one is better

1 Answers  

---

How does pyrometer works?

1 Answers  

---