Industrial instrumentation uses various industrial instruments to measure and control various industrial measurements in industries. The common quantities used in industries and which are considered for measurement include fluid pressure, fluid flow rate, temperature of a device, volume of fluid, motion or position or physical dimensions or acceleration of the machine, electrical current, electrical voltage and electrical resistance.
In an automatic- controlling operation the quantity can be controlled using the control signal sent by the computer to the controlling devices. Most of the industries are automated for ease of operation for this purpose; the microcontroller and microprocessors are required for programmable switching. For example, in many industries, the industrial power schedule is automated using embedded systems.