whatis diference between zero pressure and obsolute pressure

1 Answers   ABB,

---

Functions of electropneumatic valve positioner:

4 Answers  

---

if we have 450 mm heigth boiler drum level ,so what is span & zero value for a dpt tranmitter

4 Answers  

---

what is HVAC?

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  

---

what is written on orifice plate?

4 Answers  

---

what is the operation philosophy of proximity velocity sensor

1 Answers  

---

what is mean of 3 by 2 automation ?

5 Answers  

---

Is there a particular problem if two proposals from the same observatory (originating with different partners) are submitted?

1 Answers  

---

In close vessel/ drum why we use d.p. transmitter of -ve range i.e. (-)500 to 0 mmwc.

2 Answers   IMECO, Voltech,

---

what is difference between differial pressure & delta pressure?

3 Answers  

---

We are used ABB 800xa 5.1.please tell me how to instrall this.

1 Answers   TCCL,

---