We start with the concept of distinction, a sensor detecting apparatus, the information measured can feel, and can feel the information, according to certain rules converted into an electric signal output, or other desired forms of information, to meet the information transmission, processing, storage, display, recording and control requirements. Transmitter is a transducer, it is possible to press the non-standard command electrical signal into a standard electrical signal. It can be said information transmitter is based on a sensor, the sensor is converted in accordance with the transmitted command output signals to certain rules, such as we often heard RS485 temperature and humidity transmitter, GPRS temperature and humidity transmitter, analog transmitter temperature and humidity and the like.
Together constitute the monitoring sensor and transmitter source is automatically controlled and different physical quantities require different sensors and the corresponding transmitter. Sensor measured parameters different types, it works and conditions also varied, and therefore the sensor types and specifications is very complicated, to introduce the following concentration classification sensor:
to distinguish from the measurement object class, such as measuring temperature, humidity, when non-electricity pressure, level, light, ultraviolet light, gas, etc., is called a corresponding sensor temperature sensors, humidity sensors, pressure sensors, level sensors, light sensors, gas sensors, etc., which facilitate the user to quickly naming Find a product needs.
Among the many types of sensor temperature and humidity sensor is the most used one, it is necessary to select the measurement range of the ambient temperature and humidity sensors used.
Accuracy is the most important indicators of the quality of the humidity sensor, the higher its price is also higher precision products, everyone in the choice of product, but also to take this into account, we must tailor, select the appropriate product.