+ Submit your article here

Sensors and their uses

4/30/2012 10:30:23 AM | by Anonymous


There are different types of sensors that can be used to take measurements of various things such as temperature, density, humidity, pressure and even speed. A sensor is basically a converter that measures a physical quantity and converts it into a signal which can be read by the user. Any thing that can be measured in numerical numbers would have a sensor to it. There are also many designs and types with some using different principals to take the various types of measurements. The reading of the encoded signal also varies from sensor to sensor. For example a mercury thermometer shows measurements when the mercury in the thermometer expands and a reading is taken off the scale. This would differ as to how a reading taken off sensor used to check speed.


Sensors that measure very minor changes must have very high sensitivity. As technology advances more and more types of sensors are being developed for the various types of measurements. For example, microsensors can take reading of small objects of things with more precision. In some cases, sensors react to the surrounding they are placed in. A common temperature sensor which can also be known as a resistance temperature detector (RTD) contains a platinum wire. The resistance of this wire changes with the temperature and thus a reading of the temperature can be taken.


Some other types of sensors emit signals and take measurements by either measuring how the area reacts to the emitted signal or by measuring the reflection of the bounced off signal to make measurements. One of the most common types of sensors is inductive proximity sensor. These sensors emit an electromagnetic field then use it to sense the properties of the area in front of the sensor. By doing this, they can detect if a machine is in the required part of the cycle or if doors are closed. There is vast variety of sensors that use different technologies to take measurements. It all depends on what type of technology the user prefers to utilize and also the application of the sensor.

Are you sourcing for a product or service?

Do you need a quotation?