METRABLANSKO electrical components Germany METRABLANSKO model METRABLANSKO price

METRABLANSKO electrical components are linear devices based on metallic induction. The function of a sensor is to convert various measured physical quantities into electrical signals. In production processes, displacement measurement is generally divided into two types: measuring physical dimensions and measuring mechanical displacement. Depending on the form of transformation of the measured variable, displacement sensors can be classified as analog or digital. Analog types can be further divided into property-based and structural types. Commonly used displacement sensors are predominantly analog structural types, including potentiometric displacement sensors, inductive displacement sensors, synchros, capacitive displacement sensors, eddy current displacement sensors, and Hall effect displacement sensors. A major advantage of digital displacement sensors is that they facilitate direct input of signals into computer systems. Displacement is a quantity related to the movement of an object's position during motion, and the scope of displacement measurement methods is quite extensive. Small displacements are typically detected using strain gauge, inductive, differential transformer, eddy current, and Hall sensors. Large displacements are commonly measured using sensing technologies such as resolvers, optical gratings, capacitive gratings, and magnetic gratings. Among these, optical grating sensors are increasingly widely used in industries such as machine tool machining and testing instruments due to their advantages, including ease of digitization, high precision (with current highest resolution reaching the nanometer level), strong anti-interference capability, absence of human reading errors, convenient installation, and reliable operation.

METRABLANSKO electrical component structure

A thermopile is a pyroelectric infrared sensor, a device composed of thermocouples. It is widely used as a temperature detection device in fields such as ear thermometers, radiation thermometers, electric ovens, and food temperature detection. It consists of two or more thermocouples connected in series, where the thermoelectric potentials output by each thermocouple are superimposed. It is used to measure small temperature differences or average temperatures. Structure of a thermopile: The radiation receiving surface is divided into several sections, each connected to a thermocouple; connecting them in series forms a thermopile. Depending on the application, practical thermopiles can be made in wire-type and thin-film types, as well as multi-channel and array-type devices.

METRABLANSKO electrical component composition

Internal accessories of circuit breakers: Auxiliary contacts are mechanically linked to the opening and closing mechanism of the circuit breaker's main circuit. They are primarily used to indicate the open/closed status of the circuit breaker. Connected in the control circuit of the circuit breaker, they implement control or interlocking of related electrical appliances through the opening and closing of the circuit breaker. Alarm contacts are used for accident alarms in circuit breakers. These contacts operate only after the circuit breaker trips and opens. They are primarily used when the circuit breaker freely trips due to faults such as overload, short circuit, or undervoltage in the load. The alarm contact changes from its normally open position to a closed position, activating indicator lights, electric bells, buzzers, etc., in the auxiliary circuit to display or alert the fault trip status of the circuit breaker. Since the probability of free tripping due to load faults is relatively low. Shunt release: A shunt release is a tripping device excited by a voltage source, independent of the main circuit voltage. It is an accessory for remote opening operation. When the power supply voltage is any value between 70% and 110% of the rated control power supply voltage, the circuit breaker can reliably open. The shunt release operates on a short-time duty cycle; the coil energization time generally must not exceed 4S, otherwise the coil will burn out. To prevent coil burnout in molded case circuit breakers, a microswitch is connected in series with the shunt release coil. When the shunt release engages via the armature, the microswitch switches from normally closed to normally open. Since the control circuit for the shunt release power is cut off, the shunt coil will not be energized even if the button is manually held down, thus avoiding coil damage. After the circuit breaker is reset and closed, the microswitch returns to the normally closed position. Undervoltage release: An undervoltage release is a tripping device that causes the circuit breaker to open with or without delay when its terminal voltage drops to a specified range. Under thermal conditions, it must ensure reliable closing of the circuit breaker. Therefore, when a certain voltage drop occurs in the protected circuit's power supply voltage, it can automatically open the circuit breaker to cut off power, protecting downstream load appliances or electrical equipment from undervoltage damage. During use, the undervoltage release coil is connected to the power side of the circuit breaker; the circuit breaker can only be closed after the undervoltage release is energized.

METRABLANSKO electrical component function

The main functions of a potentiometer in a circuit include: 1. Used as a voltage divider. A potentiometer is a continuously adjustable resistor. When adjusting the knob or slider of the potentiometer, the moving contact slides on the resistive element. At this time, the output terminal of the potentiometer provides an output voltage related to the applied voltage and the angle or travel of the movable arm. 2. Used as a rheostat. When a potentiometer is used as a rheostat, it should be connected as a two-terminal device. This allows obtaining a smoothly and continuously changing resistance value within the travel range of the potentiometer. 5. Used as a current controller. When a potentiometer is used as a current controller, one of the selected current output terminals must be the terminal connected to the sliding contact.

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