German VAU THERMOTECH sensors, VAU THERMOTECH models, VAU THERMOTECH prices

VAU THERMOTECH pressure sensors for liquid level measurement. Submersible static pressure level transmitters (level gauges) operate on the principle that the static pressure of the measured liquid is proportional to its height. They use advanced imported isolated diffused silicon sensitive elements or ceramic capacitive pressure sensitive sensors to convert static pressure into electrical signals. After temperature compensation and linear correction, these are converted into standard electrical signals (typically 4 to 20mA/15VDC).

VAU THERMOTECH sensor classification

Load cells are classified by conversion method into 8 types, including photoelectric, hydraulic, electromagnetic force, capacitive, magnetic pole variation, vibratory, gyroscope, and resistive strain gauge types, with resistive strain gauge being the most widely used. 1) Photoelectric type: Includes grating and code disk types. Grating sensors convert angular displacement into photoelectric signals using Moiré fringes formed by gratings. There are two gratings: one fixed grating and one moving grating mounted on the dial shaft. The object being weighed on the load-bearing platform rotates the dial shaft via a force transmission lever system, driving the moving grating to rotate and causing the Moiré fringes to shift. By using phototubes, conversion circuits, and display instruments, the number of shifted Moiré fringes can be calculated to determine the angle of grating rotation, thereby determining and reading the mass of the object. Code disk sensors: A code disk (symbol plate) is a piece of transparent glass mounted on the dial shaft, featuring black and white codes arranged according to a specific encoding method. When the object on the load-bearing platform rotates the dial shaft via the force transmission lever, the code disk also rotates by a certain angle. Photocells receive light signals through the code disk and convert them into electrical signals, which are then digitally processed by the circuit, finally displaying the digital value representing the measured mass on the display. Photoelectric sensors were mainly used in electromechanical combination scales. 2) Hydraulic type: When subjected to the gravity P of the measured object, the pressure of the hydraulic oil increases, with the degree of increase proportional to P. By measuring the increased pressure value, the mass of the object can be determined. Hydraulic sensors have a simple and robust structure and a large measurement range, but accuracy generally does not exceed 1/100. 3) Capacitive type: It operates based on the direct proportional relationship between the oscillation frequency f of the capacitor oscillator circuit and the distance d between the plates. There are two plates, one fixed and one movable. When the object is loaded onto the load-bearing platform, the leaf spring deflects, changing the distance between the two plates, which in turn changes the oscillation frequency of the circuit. By measuring the change in frequency, the mass of the object on the load-bearing platform can be calculated. Capacitive sensors consume little power, have low cost, and offer an accuracy of 1/200 to 1/500.

VAU THERMOTECH sensor features

Resistors, inductors, and capacitors are the three major types of passive components in electronics. Capacitive sensors convert changes in the measured quantity into changes in capacitance; they are essentially capacitors with variable parameters. Capacitive sensors offer the following advantages: high impedance, low power consumption, and very low input energy requirements. They can achieve large signal changes, resulting in high signal-to-noise ratios and system stability. They have fast dynamic response, with operating frequencies reaching several megahertz, and support non-b contact measurement, suitable for both conductive and semiconductor objects. Their simple structure and strong adaptability allow them to operate in harsh environments such as high/low temperatures and strong radiation, leading to wide application. With the development of electronic and computer technologies, disadvantages such as susceptibility to interference and distributed capacitance have been continuously overcome. Additionally, capacitive grid displacement sensors and integrated capacitive sensors have been developed. Therefore, they are widely used in non-electrical quantity measurement and automatic detection, capable of measuring parameters such as pressure, displacement, speed, acceleration, Aness, thickness, liquid level, humidity, vibration, and component content. Capacitive sensors have promising development prospects.

VAU THERMOTECH sensor installation precautions

1) Handle load cells with care, especially small-capacity sensors with aluminum alloy elastic bodies. Any impact or drop caused by vibration is likely to cause significant output errors. 2) When designing the loading device and during installation, ensure that the line of action of the loading force coincides with the force axis of the load cell to minimize the effects of inclined and eccentric loads. 3) For horizontal adjustment: If using a single load cell, adjust the mounting plane of its base with a level until it is horizontal. If multiple sensors are used for simultaneous measurement, their base mounting surfaces should be kept as level as possible to ensure that the force borne by each sensor is basically consistent. 4) Determine the rated load of the sensor used based on the load cell capacity selection specified in its instructions. 5) To prevent chemical corrosion, apply Vaseline to the outer surface of the load cell during installation. Avoid direct sunlight and environments with drastic temperature changes. 6) Install bypasses made of copper braided wire at both ends of the load cell loading device. 7) Do not extend the cable yourself. If extension is absolutely necessary, solder the joints and apply moisture-proof sealant. 8) It is best to use baffles to cover the sensor around the load cell. This prevents debris from falling into the moving parts of the sensor, which could affect measurement accuracy. 9) Keep the sensor cable away from high-power power lines or places with pulse waves. If avoidance is impossible, route the load cell cable separately through an iron pipe and shorten the connection distance as much as possible. 10) Determine the rated load of the sensor used based on the load cell capacity selection specified in its instructions. Although load cells have a certain overload capacity, avoid such situations during installation and use. Even short-term overloading may cause permanent damage to the sensor. 11) For high-precision applications, preheat the load cell and instrument for 30 minutes before use.

Weidou Intelligent Technology specializes in selling German VAU THERMOTECH sensors, VAU THERMOTECH proximity sensors, VAU THERMOTECH distance sensors, VAU THERMOTECH vision sensors, VAU THERMOTECH displacement sensors, VAU THERMOTECH load cells, VAU THERMOTECH speed sensors, VAU THERMOTECH photoelectric sensors, VAU THERMOTECH position sensors, VAU THERMOTECH angle sensors, VAU THERMOTECH tactile sensors, VAU THERMOTECH temperature sensors, VAU THERMOTECH pressure sensors, VAU THERMOTECH flow sensors, VAU THERMOTECH level sensors, VAU THERMOTECH motion sensors, and VAU THERMOTECH process sensors. Original German imports. Welcome inquiries and orders.