Bimetallic Thermometer
A bimetallic strip is made up of metal A and B, having different thermal expansion co-efficient. It is bonded together. These thermometers use the following two principles: 1. All metals…
Bourdon Tube Pressure Gauge
Bourdon tube pressure gauge when an elastic transducer ( bourdon tube in this case ) is subjected to a pressure, it defects. This deflection is proportional to the applied pressure…
Elastic Diaphragm Gauge Principle
Principle of Elastic diaphragm gauges when an elastic transducer (diaphragm is this case) is subjected to a pressure, it deflects. This deflection is proportional to the applied pressure when calibrated.…
Strain Gauge Pressure Sensor Principle
Strain Gauge Pressure Sensor Principle : When a closed container is subjected to the appilied pressure, it is strained (that is, its dimension changes). Measurement of this strain with a…
Types of Control Systems
There are two types of control systems namely: Open loop control systems (non-feedback control systems) Closed loop control systems (feedback control systems) Open Loop Control System If in a physical…
Example of Feedback System
Home furnace control system must control the temperature in the room and kept it constant. As in open loop system a timer is used to switch on the furnace for…
Pneumatic Load Cell Principle
Principle of Pneumatic Load Cell If a force is applied to one side of a diaphragm and an air pressure is applied to the other side, some particular value of…
Hydraulic Load Cell Principle
Principle of Hydraulic Load cell When a force is applied on a liquid medium contained in a confined space, the pressure of the liquid increases. This increase in pressure of the…
Types of Load Cells
Load Cell A strain gauge – elastic member combination arrangement used for the measurement of load or weight is called load cell. It utilizes an elastic member as primary transducer…
Industrial Automation Protocols
Comparison of Different Industrial Automation Communication Protocols like ARCNET. AS-I, CAN open, CONTROL NET, DEVICE NET, FOUNDATION FIELD BUS, INDUSTRIUAL ETHERNET, INTERBUS-S, LON Works, MODBUS PLUS, PROFIBUS DP, PROFIBUS PA,…
