Sensors and transmitters

The concept of a transmitter is an instrument that converts a non-standard electrical signal into a standard electrical signal. When the output of the sensor is a specified standard signal, it is called a transmitter. Sensor is a general term for devices or devices that can detect the specified measured and convert it into a usable output signal according to a certain rule. It is usually composed of sensitive components and conversion components. Sensors are devices that convert physical signals into electrical signals. In the past, physical signals were often used, but now other signals are also available. The primary instrument refers to the field measuring instrument or the base control meter, and the secondary instrument refers to the instrument that uses the primary meter signal to complete other functions: such as control, display and other functions. Sensors and transmitters are the concept of thermal instruments. The sensor converts non-electrical physical quantities such as temperature, pressure, liquid level, material, gas characteristics, etc. into electrical signals or sends physical quantities such as pressure, liquid level, etc. directly to the transmitter. The transmitter amplifies the weak electrical signal collected by the sensor in order to transfer or start the control element. Or a signal source that converts the non-electricity input from the sensor into an electrical signal while amplifying it for remote measurement and control. The analog quantity can be converted into digital quantity according to need. The sensor and transmitter together constitute a monitoring signal source for automatic control.