KEYILE科译勒 K-VFDM Tuning fork densitometer

• The power supply adopts an isolated circuit design, wide-range precision power supply, impact resistance, and antiinterference.
• The tuning fork density meter adopts an industrial-grade high-performance single-chip integrated circuit, and the microprocessor performs complete signal conditioning, calculation and diagnosis functions, without the need for remote electronic devices for processing. High accuracy, good stability, and strong anti-interference ability.
• The input signal and output signal are isolated, which is convenient for users to design the system's anti-interference.
• The sensor signal adopts a photoelectric isolation design.
• The overall size is small, the on-site space requirements are low, and the installation is flexible and convenient, without the need for debugging.
• Optimized design-not easily affected by vibration and pressure changes.
• Continuous real-time measurement can be performed in pipelines, bypasses and tanks

Insertiontype densitymeter(concentration meter) candetect densityonline in real time. It canbe usedforprocess control of products withdensityas basicparameterorqualitycontrol with solidpercentage or concentrationpercentage as reference. Typical industries include petrochemical industry, brewingindustry, foodindustry, pharmaceutical industryandmineral processing(such as clay, carbonate, silicate, etc.), andit is specificallyused forinterface detection inmulti-product pipelines inthe above industries, densitydetection ofstirredmixtures, endpoint monitoringof reactors, andinterface detection ofseparators.

The sensor works based on the principle of component vibration. The component part is the tuning fork part immersed in the measured liquid. The tuning fork part senses vibration through the internal piezoelectric device fixed at one end of the bottom of the fork body. The oscillation frequency is detected by the secondary piezoelectric device fixed at the other end of the fork body, and then the signal is amplified by the circuit at the top. The liquid density is closely related to the vibration frequency of the measured liquid when it flows. When the density of the measured liquid changes, the vibration frequency of the liquid flow also changes. The density of the measured liquid can be accurately calculated by the following equation.

         D= K0+K1T+K2T2 D=uncalibrated density of the measured medium (kg/m3)

         T=vibration frequency (μ s) K0, K1, K2=constant

During the density detection process. The insertion densitometer (concentration meter) can automatically compensate for the influence of temperature on the density (D) of the measured medium, and pressure has no significant effect on density.

Unlike pipeline density sensors, the fork of the insertion density meter (concentration meter) is not fully enclosed.

1. The boundary effect of the pipe wall or container wall on the fluid plus the viscosity effect of the measuring medium itself will have a certain impact on the measurement calibration of the sensor. In order to overcome these, we have summarized and set the installation method and pipe diameter in advance for different environments to facilitate selection under the same conditions.

2. Calculation of flow velocity

     V = Q / (1/4 *π *d2) Example: Flow rate 20m3/h Pipe diameter 100mm V = 20 / 3600 (/ 1/4 * 3.14 * 0.1* 0.1) = 0.7 m/s