Answer / bunny

Modbus,Profibus and Fieldbus are industrial standrad
protocols with which instruments are communicating each
other. A protocol is a set of rules that governs
communications within a network, defining everything from
how connections are made between devices to how the message
itself is formatted. They can be implemented through
software, hardware, or both.

Answer / arash

In practical issue , main differents are: Lenghth of
segments , capability for using in hazerdous areas ,
communication speeds , number of devices can be connected
to them and also kind of industry they are going to be
used .

Control valve question what is the meaning of cauge.?what is the use of cauge?

1 Answers  

---

how to measured k type thermocouple temp.

3 Answers   NTPC,

---

can any one help me to get bel probational engineers sample question papers. I have applied for it.

0 Answers  

---

Explain the usage of the PLC system?

3 Answers  

---

what is disadvantage of field bus (ff)type of instrument

1 Answers  

---

---

why the positioner output is 3-15psi

5 Answers  

---

sir,would you please send me the Hindustan petroleum corporation limited papers(HPCL).my e-mail ID is ujjwal_sharma1983@yahoo.com

0 Answers   HPCL, TCS,

---

what is the characteristics of control valve?

7 Answers  

---

why dead weight tester called dead weight tester.

5 Answers   QAFCO,

---

What are the error values can accepted in flow transmitter calibration?could u give any formula for this?

0 Answers   Hamsco,

---

Why MUX JB's are using only Temperature Element in Fundation field bus?

0 Answers   Reliance Industries,

---

how to measure level under ground tank ? which type of transmitter very accuracy ?

3 Answers   Biocon,

---