The working principle of imported tuning fork density meter and concentration meter
A tuning fork density meter is an instrument used to measure the density of a fluid, which uses the relationship between the vibration frequency of the tuning fork and the density of the fluid. At the Hannover Instrument Exhibition Forum in Germany, the imported ** tuning fork density meter engineer of Vton of the United States introduced the detailed working principle of the tuning fork density meter:
Tuning fork structure:A tuning fork density meter usually consists of two parallel metal forks that are fixed to a vibrating unit. The two forks are equal in length, and they are connected together by a vibrating exciter. This vibrating unit is usually made of materials such as piezoelectric ceramics.
Exciter:By means of an exciter, the tuning fork vibrating unit is excited to vibrate at its natural frequency. This natural frequency is related to the geometry and material of the tuning fork.
Vibration frequency vs. density:When a tuning fork is immersed in a fluid, the density of the fluid affects the vibration frequency. The vibration frequency is directly proportional to the density of the fluid, i.e., the vibration frequency increases with the increase of the density of the fluid. This is based on the effect of the fluid on the quality and elasticity of the tuning fork.
Sensors:The tuning fork density meter is equipped with a sensor that monitors changes in the frequency of vibrations. This can be achieved by measuring the resistance, capacitance or piezoelectric effect of the vibration unit. The changing signal is converted into an electrical signal and fed into the processing unit. The sensor is an important part of the density meter, such as the sensor of the imported ** tuning fork density meter of the American Vton is self-developed, with high performance and strong stability.
Handling Units:The processing unit analyzes the sensor output, calculates the change in vibration frequency, and converts it into a density value for the fluid. This typically requires a pre-calibrated relationship curve that maps changes in vibration frequency to density values.
Temperature and pressure compensation:Since changes in the temperature and pressure of the fluid also affect the frequency of vibration, tuning fork density meters are usually equipped with temperature and pressure sensors to compensate accordingly.
Overall, tuning fork density meters provide a fast and accurate method of density measurement by monitoring changes in vibration frequency to infer the density of a fluid. This makes it widely used in the chemical, oil and gas industries, and more.