Before erect the instrument what should you do?

3 Answers   L&T,

---

what is difference between profibus and field bus?

1 Answers  

---

TCD Principle

1 Answers  

---

Sir, my yokugava FF TYPE LEVEL transmitter us bad, i don't have spares available, i want to replace it with a Rosemount FF transmitter, please tell me what procedure to be followed and what changes to be done in dcs part.

1 Answers   BPCL Bharat Petroleum, OEG,

---

what is air to open and air to close control valve and difference btwn this...and how to measure milli amp by this...and what is the role of positioner and i/p converter in this..plz help me

2 Answers   HCL, SOC,

---

---

why do we use 4-20mA as o/p and why don't use 0-20mA or 5- 21mA?

3 Answers  

---

How to zero trim the level transmitter by using foundation fieldbus communicator.

2 Answers   Emerson,

---

What is the SCAN time of a DCS/PLC? What is the typical value for scan time of DCS and PLC?

6 Answers   Essar, Gasco, Siemens,

---

Where are use of pressure,level,flow switches?and what is input and output

3 Answers  

---

two common seiling liquid used in seal pots are:

1 Answers   Thermax,

---

What is the difference between PLC and DCS?

4 Answers   Honeywell,

---

What s PDS & PDMS tools ?its role in instrumentation?

1 Answers  

---