German Tecfluid sensors Tecfluid models Tecfluid prices

Tecfluid sensors are devices that convert mass signals into measurable electrical signal outputs. When using sensors, the actual working environment of the sensor should be considered first. This is crucial for the correct selection of load cells, as it affects whether the sensor can work normally, its safety and service life, and even the reliability and safety of the entire weighing instrument. There are qualitative differences between the old and new national standards in the basic concepts and evaluation methods of the main technical indicators of load cells. The main types include S type, cantilever type, spoke type, plate ring type, membrane box type, bridge type, column cylinder type, etc.

Tecfluid sensor detection principle

Detection is performed by detecting magnetic losses caused by eddy currents generated on the surface of a conductor under the influence of an external magnetic field. This method involves generating an alternating magnetic field within a detection coil and detecting impedance changes caused by eddy currents produced in the metal body being detected. Additionally, other methods include aluminum detection sensors that detect frequency phase components, and all-metal sensors that detect only impedance change components through the working coil. A transformer state occurs on the surfaces of the detected object side and the sensor side.

Tecfluid sensor classification

1) Capacitive proximity sensor: It is a capacitive proximity switch with an electrode as the detection terminal, composed of a high-frequency oscillation circuit, detection circuit, amplification circuit, shaping circuit, and output circuit. Normally, there is a certain capacitance between the detection electrode and the ground, which becomes part of the oscillation circuit. When the detected object approaches the detection electrode, the detection electrode is subjected to electrostatic induction and produces polarization. The closer the object is to the detection electrode, the more induced charge accumulates on the electrode. Since the electrostatic capacitance of the detection electrode is present, the capacitance C of the detection electrode increases with the increase in charge. Since the oscillation frequency of the oscillation circuit is inversely proportional to the capacitance, when the capacitance C increases, the oscillation of the circuit weakens or even stops. These two states, oscillation and stoppage, are converted into switch signals by the detection circuit and output externally. 2) Inductive proximity sensor: Composed of a high-frequency oscillation circuit, detection circuit, amplification circuit, shaping circuit, and output circuit. The sensitive element for detection is the detection coil, which is part of the oscillation circuit. When alternating current passes through the detection coil, an alternating magnetic field is generated around it. When a metal object approaches the detection coil, eddy currents are generated in the metal object, absorbing magnetic field energy and causing changes in the inductance L of the detection coil. This reduces the oscillation frequency of the circuit, potentially stopping oscillation. These two states, oscillation and stoppage, are converted into switch signals by the monitoring circuit and output. Note: Similar to capacitive proximity sensors, inductive proximity sensors detect metal conductors; non-metallic conductors cannot be measured using this method. Amplitude changes vary with the type of target metal, so the detection distance also varies with the type of target metal. 3) Photoelectric proximity sensor: The beam axis of the light-emitting diode (or semiconductor laser tube) and the axis of the phototransistor lie in the same plane and form a certain angle, intersecting at a point in front of the sensor. When the surface of the detected object approaches the intersection point, the reflected light from the LED is received by the phototransistor, generating an electrical signal. When the object moves away from the intersection point, the reflection area is no longer within the viewing angle of the phototransistor, and the detection circuit has no output. Generally, the drive current supplied to the LED is not direct current but alternating current of a certain frequency. Thus, the receiving circuit also receives an alternating signal of the same frequency. Filtering the received signal to allow only signals of the same frequency to pass can effectively prevent interference from other stray light and improve the luminous intensity of the LED.

Tecfluid sensor applications

Proximity sensors are mainly used to detect object displacement and are widely applied in aviation, aerospace technology, and industrial production. In daily life, they are used in automatic doors and automatic heaters in hotels, restaurants, and garages. For security and anti-theft purposes, important locations such as archives, accounting departments, financial institutions, museums, and vaults are typically equipped with anti-theft devices composed of various proximity switches. In measurement technology, they are used for measuring length and position; in control technology, they are used for measuring and controlling displacement, speed, and acceleration, utilizing a large number of proximity switches.

Weidou Intelligent Technology specializes in selling German Tecfluid sensors, Tecfluid proximity sensors, Tecfluid distance sensors, Tecfluid vision sensors, Tecfluid displacement sensors, Tecfluid load cells, Tecfluid speed sensors, Tecfluid photoelectric sensors, Tecfluid position sensors, Tecfluid angle sensors, Tecfluid tactile sensors, Tecfluid temperature sensors, Tecfluid pressure sensors, Tecfluid flow sensors, Tecfluid level sensors, Tecfluid motion sensors, Tecfluid process sensors. Original German imports. Welcome customers to inquire and order.