Instrumentation
is a branch of physics which deals with the measuring and controlling
variables in a process industry, the instruments related to the process
variables and its calibration. Some of the industrial process
variables are Level, Pressure, Temperature, Humidity, Flow, pH, Force,
Speed etc,. The technology which used to design and develop an
instrument for the measurement and control is called instrumentation
technology.
Definition: Instrumentation is defined as "the art and science of measurement and control".
An instrument is a device that measures and regulates the process variables
such as flow, pressure, temperature, level, or pH.Instruments are
classified in to mechanical instruments and electronic instruments. In
the early years the process industry field uses mechanical devices for
the measurement and control. At that time process indicators and control
elements such as valves were monitored by an operator that walked
around the unit, by adjusting the valves to obtain the desired process
variables. After the boom of electronics all mechanical instruments give
the way to electronic equipments.The transformation of instrumentation
from mechanical pneumatic transmitters, controllers, and valves to
electronic instruments reduced the maintenance costs the systems used
for measurements & control in the process industry field. This also
increased the efficiency, and production due to their increase in
accuracy.
The
progress of the field in industry took place largely in the 1930's
after the invention of the reliable instrument to record the
temperature. With the growth of the continuous manufacturing and 24 hrs
working in the process industries, the need for continues measurements
and automatic controls became necessity. There are continuous demands
for the improvements in the quality of measurement, control and for the
development of new methods based on newly found laws and its effects in
the electrical, mechanical fields.
Aim of Instrumentation:- To obtain maximum production (quality products) from the industry with the minimum usage of raw materials.
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