Answer / asif

Function Test is to carried out the test for the devices wherether it is functioning properly or not as per the data sheet . Usually in Instrumentation, it is carried out for pressure switch, flow switches etc.

What is open loop and close loop?

4 Answers   L&T, Pearl Distillery,

---

WHAT DO WE MEANT BY INSTRUMENT MAINTENANCE IN SOFTWARE SIDE.

1 Answers  

---

why we use by pas on a positioner? When can a by pass be not used on a positioner ?

1 Answers  

---

hay friends, i am in trouble to understand PID controller. several times i have study but it is not clear to me have you a simple way to understand.

1 Answers  

---

What is mean by ATEX?

1 Answers  

---

what is concept of field,control room area in transmitters?

1 Answers  

---

Dear all... I have 1 0-400 duplex type RTD, I connected the A side to the temperature indicator and B side to the PLC panel, but when I have observed then found that The PLC side temp has the variation. and it was distub to other RTD temp also. so what can I do.pls help me

1 Answers   Worley Parsons,

---

why pneumatic control signal output is use 0.2 to 1 kg/cm2

3 Answers   Jindal,

---

1,why we use 4-20 ma output of all instrument qhy not use 0- 20, 2,what is the different between PLC & DCS. 3,how can we meaure maximum span of new flowmeter if not given any information.

4 Answers   Reliance,

---

Specify for Cables - Flame Retardant and Fire Resistant?

0 Answers  

---

What is the Flow rate ?

2 Answers  

---

draw shematic diagram of c/v positioner(smart type)?

0 Answers   Coromandel,

---