Now before starting the discussion of instrumentation system first let me distinguish the difference between sensor, transducer, and transmitter :
1. sensor -
A sensor that senses physical property like temperature, level, flow, pressure, humidity, concentration, etc. and convert it into a low level of electrical signal.now to measure properly or to send that signal over a long distance it used circuitry which amplifies a signal to send it over a long distance.
2. transducer -
Transducer which converts one form of energy to another form like i/p converter (current to pressure) or p/I (pressure to current) which used extensively with pneumatic valves where the signal needs to convert to perform a task.
3. transmitter -
Now most people think that transmitter only used to send a signal over long distance.yes this is right but also it maintains that proper mA current is proportional to applied pressure emphasized text. (i.e. let I have a transmitter which has a range from 0-6 bar has applied pressure let assume is 3 bar so it maintains that proportional current of 12mA Irrespective of applied voltage about till 12 v it hold its mA output.)
Let come to our topic :
Types of instrumentation used in industry
Analytical measurement (PH, conductivity,etc.)
in the next post, I will explain each and everyone and type of each measurement.
hope you like this.