Answer / raj ups

I think the direct action control valve generally used in
pressure control loop as we r using it in the vapour release
vale as pressure incresese as greatter as the set point the
opening of the valve rises as quickly

Answer / umair naz mughal

direct action control valce is mostli use boiler section because if the water flow is reduce the temp is rise and boiler was damage so we use this valve this is normally open.

How to calibrate vertex flow meter? How to calibrate mass flow meter?

1 Answers   Chevron,

---

wich is coming the first HAZOP OR SIL

0 Answers  

---

what is the reset offset and control system in instrumentation

0 Answers   ABB,

---

what is the difference between two wire transmitter and 4- wire transmitter

3 Answers  

---

what is ILD

1 Answers  

---

What inherent design and operating principles are included in a modern control system to use predictive maintenance practices to increase overall system reliability?

0 Answers  

---

2. What is ultrasonic flowmeter?

1 Answers  

---

I m appointed as an automation trainee engineer in small firm in that I am only the one , my company give me a project on s7-200 as i m beginner I don't know how to program so please send me the helpful site so that I complete my project before deadline....please help me out in this critical situation.

0 Answers  

---

when the instrument tapping on pipe line is located below and transmitter is located above the tapping point for liquid service transmitter, what should we do, is there any additional drain valve is required??

2 Answers  

---

T.x range -0.1 to 0.2 milibar,so how much mili ampear at 0.1 milibar?

7 Answers   Sugar Factory,

---

Lists Different types of Tappings.

4 Answers   TCS,

---

if the neutral and ground of ups voltege are connected together in the source itslef then why the voltege b/w neutral and ground comes positive in some other destination inspite of having earth pit. how can we mimmise this?

1 Answers   MPL,

---