Question { Adani, 9910 }

What is DCS?

Answer

DCS Means Distributed control system. This is working as a
master control system of full entire plant. its communicate
with all node control system (field Sub control PLC's and
control & execute the all closed loop process.

DCS -------- PLC 01
|---- PLC 02
|---- PLC 03

Question { 86107 }

what is difference between 1/2"NPT & M20 x 1.5 cable gland?

Answer

1/2" NPT size of theard for cable gland

M20x1.5 Cable gland for 1.5 sq mm cable

In General two typs of Theard mounting avilable.
1. mm theard
2. Inch Theard

Here 1/2" NPT - Inch Theard

Question { 13238 }

which type of rtd is good for any system,2wire,3wire or 4
wire

Answer

But Generally 3 wire RTD only preparred for Industrial
purpose. Most of the Industires & Design document suggest 3
wire RTD is suitable for any application.