Manual on the Operating Principle of German E+H Tuning Fork Level Gauge Model FTM50-AGG2A4A32AA

The working principle of the German E+H tuning fork level gauge is that a pair of piezoelectric crystals mounted on the tuning fork base causes the tuning fork to vibrate at a certain resonant frequency. When the tuning fork comes into contact with the measured medium, the frequency and amplitude of the tuning fork will change. These changes are detected and processed by an intelligent circuit, which converts them into a switch signal.

The German E+H tuning fork level gauge adopts foreign new technologies and imported chips, featuring a long service life, stable performance, safety, and reliability. It also has advantages such as strong adaptability (the measurement is not affected by different electrical parameters or densities of the measured medium), no need for on-site calibration (regardless of the medium being measured), and maintenance-free operation. It is widely used in level process control in industries such as metallurgy, building materials, chemicals, light industry, and grain.

The German E+H tuning fork level gauge is a new type of level switch, also often called a tuning fork level meter or tuning fork level controller. It is designed and manufactured using the principle of tuning fork vibration. In the German E+H tuning fork level gauge, the tuning fork rod is driven by a piezoelectric wafer at the base of the sensing rod of the tuning fork level switch, and another piezoelectric wafer receives the vibration signal, allowing the vibration signal to circulate and causing the sensing rod to resonate. When the material comes into contact with the sensing rod, the vibration signal gradually weakens until resonance stops, and the control circuit outputs an electrical contact signal. Due to the natural principle that the sensitivity of the sensing rod decreases from the front end to the rear base, no false signals will be generated when the material in the tank accumulates upward around the tank and touches the base (rear part) of the sensing rod or during discharging. Simply put, the tuning fork generates mechanical vibration under the excitation of piezoelectric crystals, and this vibration has a certain frequency and amplitude.

The German E+H tuning fork level gauge is not affected by foam, eddy currents, or gases, and is suitable for fixed-point alarm or control of the level of solid materials in various silos and liquid levels in various containers.

To suit applications in different occasions, the product also includes high-temperature type, extended type, anti-corrosion type, etc. Please select the product type according to your needs.