GEFRAN sensor 2500-0-0-0-0-0-1 in stock

Brand

GEFRAN/Italian GEFRAN

Application Areas

Chemical, Petroleum, Mining, Road/Rail/Shipping, Comprehensive

Italian GEFRAN Displacement Sensor F028429 2500-0-0-0-0-0-1

Main Classifications of Italian GEFRAN Displacement Sensors

Based on Motion Type

Italian GEFRAN Linear Displacement Sensor:

The function of the Italian GEFRAN linear displacement sensor is to convert linear mechanical displacement into an electrical signal.

To achieve this effect, the Italian GEFRAN displacement sensor typically uses a variable resistor slide rail fixed at a fixed position on the sensor. Different resistance values ​​are measured by the displacement of the slider on the slide rail. The sensor slide rail is connected to a steady-state DC voltage, allowing a small current of microamperes to flow. The voltage between the slider and the starting end is proportional to the length of the slider's movement. Using the sensor as a voltage divider minimizes the requirement for the accuracy of the total resistance of the slide rail, because resistance changes caused by temperature variations do not affect the measurement results.

GEFRAN Angle Displacement Sensor (Italy):

GEFRAN angle displacement sensors are used for obstacle detection: using angle sensors to control your wheels can indirectly detect obstacles. The principle is very simple: if the motor angle sensor is running but the gear is not turning, it means your machine is blocked by an obstacle. This technology is very simple to use and very effective; the requirement is that the moving wheel cannot slip on the floor (or slip too many times), otherwise you will not be able to detect the obstacle. A spinning gear connected to the motor avoids this problem; this wheel is not driven by the motor but by the movement of the device: if the idler wheel stops during the rotation of the drive wheel, it means you have encountered an obstacle. (Depending on the material)

Hall Effect Displacement Sensor: Its measurement principle is to keep the excitation current of the Hall element (see semiconductor magnetic sensing element) constant and move it in a uniformly gradient magnetic field. The displacement is proportional to the output Hall potential. The larger the magnetic field gradient, the higher the sensitivity; the more uniform the gradient change, the closer the relationship between the Hall potential and the displacement is to linear. Figure 2 shows three magnetic systems that generate gradient magnetic fields: System a has a narrow linear range, and the Hall potential ≠ 0 when displacement Z=0; System b has good linearity when Z<2 mm, and the Hall potential = 0 when Z=0; System c has high sensitivity and a measurement range of less than 1 mm. N and S in the figure represent the positive and negative magnetic poles, respectively. Hall effect displacement sensors have low inertia, high frequency response, reliable operation, and long lifespan, and are therefore often used in applications where various non-electrical quantities are converted into displacement before measurement.

Photoelectric displacement sensors: These measure the displacement or geometric dimensions of an object based on the amount of light flux blocked by the object. They are characterized by non-contact measurement and the ability to perform continuous measurements. Photoelectric displacement sensors are commonly used for continuous measurement of wire diameter or as edge position sensors in strip edge position control systems.

Model Characteristics

**Italian GEFRAN Conductive Plastic Displacement Sensor:**

DAP (dipropylene phthalate) resistive paste is coated onto an insulating substrate using a special process, then heated and polymerized to form a resistive film. Alternatively, DAP resistive powder is thermoplasticized and pressed into grooves within an insulating substrate to form a solid resistive body. Features include: good smoothness, excellent resolution, good wear resistance, long lifespan, low dynamic noise, high reliability, and resistance to chemical corrosion. Used in servo systems for aerospace devices and aircraft radar antennas.

**Wire-wound Displacement Sensor:** Constantan or nichrome wire is used as the resistive body and wound around an insulating frame. Wire-wound potentiometers are characterized by low contact resistance, high accuracy, and a small temperature coefficient. Disadvantages include poor resolution, low resistance, and poor high-frequency characteristics. Primarily used as voltage dividers, rheostats, and for zeroing and operating point determination in instruments.

**Metal-Glass-Uranium Displacement Sensor:** Metal-glass-uranium resistive paste is coated onto a ceramic substrate using screen printing according to a specific pattern, followed by high-temperature sintering. Features include: wide resistance range, good heat resistance, strong overload capacity, excellent moisture resistance and wear resistance, making it a promising type of potentiometer. Disadvantages include high contact resistance and current noise.

Metal Film Displacement Sensor:

The resistive element of a metal film potentiometer can be composed of alloy film, metal oxide film, metal foil, etc. Features include high resolution, high temperature resistance, small temperature coefficient, low dynamic noise, and good smoothness.

Italian GEFRAN Magnetic Displacement Sensor:

Eliminates mechanical contact, long lifespan, and high reliability. Disadvantage: High requirements for the working environment.

Italian GEFRAN Photoelectric Displacement Sensor:

Eliminates mechanical contact, long lifespan, and high reliability. Disadvantage: Digital signal output, cumbersome processing.

Magnetostrictive Displacement Sensor:

Magnetostrictive displacement (liquid level) sensors accurately measure the actual displacement value of the detected product by precisely detecting the absolute position of a moving magnetic ring through internal non-contact measurement and control technology.

GEFRAN Digital Laser Displacement Sensor (Italy):

Laser displacement sensors can accurately measure the position and displacement of objects without contact. They are mainly used for measuring geometric quantities such as displacement, thickness, vibration, distance, and diameter.

Based on their measurement principles, GEFRAN laser displacement sensors are divided into laser triangulation and laser echo analysis. Laser triangulation is generally suitable for high-precision, short-distance measurements, while laser echo analysis is used for long-distance measurements.

The laser emitter projects a visible red laser beam onto the surface of the object being measured through a lens. The laser beam reflected by the object passes through the receiver lens and is received by an internal CCD linear camera. Depending on the distance, the CCD linear camera can "see" the light spot at different angles. Based on this angle and the known distance between the laser and the camera, the digital signal processor can calculate the distance between the sensor and the object. Simultaneously, the position of the beam at the receiving element is processed by analog and digital circuits and analyzed by a microprocessor to calculate the corresponding output value. Within a user-defined analog output window, a standard data signal is output proportionally. If a switch output is used, it is activated within the set window and deactivated outside the window. Furthermore, the detection windows for analog and digital outputs can be set independently.

The Italian GEFRAN laser displacement sensor uses echo analysis to measure distance with a certain level of accuracy. Internally, the sensor consists of a processor unit, an echo processing unit, a laser emitter, and a laser receiver. The laser displacement sensor emits one million laser pulses per second to the object being detected and back to the receiver. The processor calculates the time required for the laser pulse to encounter the object and return to the receiver, thus calculating the distance value. This output value is the average of thousands of measurements. Laser echo analysis is suitable for long-distance detection, but its measurement accuracy is lower than that of laser triangulation.

The company mainly deals with European and American brands and can source brands from any European country. For example, our key German brands include: BURKERT, DEMAG, HAWE, REXROTH, HYDAC, PILZ relays, FESTO, IFM sensors, E+H, HEIDENHAIN, P+F sensors, SICK, TURCK, and HIRSCHMANN industrial switches. German brands: Hengstler, Murr, Schmersal, Samson, EPRO (Emerson Group)

American brands: MOOG, ASCO, MAC, NUMATICS, PARKER, VICKERS, ROSS

British brands: Norgren

Italian brands: OMAL, ATOS, CAMOZZI, UNIVER, Camozzi