Sensor

Types of pumps:Gear pump ..Vane pump ..Screw pump .. Lobe pump
Types of centrifugal pumps :Multistage Pumps..Split Case pumps ..End suction pump..Vertical Line Shaft pumps..Vertical Turbine pumps
A sensor is a device that produces an output signal for the purpose of sensing a physical phenomenon.
In the broadest definition, a sensor is a device, module, machine, or subsystem that detects events or changes in its environment and sends the information to other electronics, frequently a computer processor. Sensors are always used with other electronics.
Sensors are used in everyday objects such as touch-sensitive elevator buttons (tactile sensor) and lamps which dim or brighten by touching the base, and in innumerable applications of which most people are never aware. With advances in micromachinery and easy-to-use microcontroller platforms, the uses of sensors have expanded beyond the traditional fields of temperature, pressure and flow measurement,[1] for example into MARG sensors.