Thermocouples are a widely used type of temperature sensors. It gives a mV output which is proportional to the temperature of the junction. They are cheap and interchangeable, have standard connectors, and can measure a wide range of temperatures.
Measures linear distance uses potential division as measuring principle an encoder is used for the angular motion.
Force transducers are used in all industrial weighing applications.
Humidity sensors are used in all climate control processes.
Uses the strain gauge principle to measure pressure.
Measures the level of a liquid/solid in container.
Usually used to detect material in a conveyor. Gives a digital output according to the sensing of material. There are 4 types, Capacitive, Inductive, Magnetic and photoelectric.