050S003 switch Germany ELFIN model 050S003 price

The 050S003 switch is a component that converts changes in non-electrical quantities (such as speed and pressure) into changes in electrical quantities. Depending on the non-electrical quantity being converted, it can be classified as a pressure switch, speed switch, temperature switch, etc., serving as a part or accessory for measurement, control instruments, and equipment.

050S003 switch structure

It consists of two parts: the scale grating and the grating readhead. The figure on the right shows the structure of the grating ruler. The key part of the grating detection device is the grating readhead, which consists of a light source, condensing lens, index grating, photoelectric elements, and adjustment mechanisms. There are many structural forms of grating readheads, which are classified into direct-receiving readheads (also known as silicon photovoltaic cell readheads), mirror-image readheads, beam-splitter readheads, and metal grating reflective readheads based on their structural characteristics and application scenarios.

050S003 switch principle

The essence of a grating displacement measurement switch is to perform measurement by using the grating pitch as a standard ruler. High-resolution linear encoders are generally expensive and difficult to manufacture. To improve system resolution, Moiré fringes need to be subdivided; grating switch systems mostly adopt electronic subdivision methods. When two gratings overlap with a slight inclination, Moiré fringes are generated in a direction roughly perpendicular to the grating lines. As the grating moves, the Moiré fringes move up and down accordingly. This converts the measurement of the grating pitch into the measurement of the number of Moiré fringes. Within the width of one Moiré fringe, placing 4 photoelectric devices at specific intervals enables electronic subdivision and direction discrimination functions. For example, for a linear encoder with 50 line pairs/mm, its grating pitch is 0.02mm. If four-fold subdivision is adopted, counting pulses with a resolution of 5μm can be obtained, which achieves very high accuracy in general industrial measurement and control. Since displacement is a vector, both its magnitude and direction must be detected; therefore, at least two photoelectric signals with different phases are required. To eliminate common-mode interference, DC components, and even harmonics, differential amplifiers composed of low-drift operational amplifiers are typically used. The 4 photoelectric signals obtained from 4 photosensitive devices are respectively sent to the input terminals of 2 differential amplifiers. The two signals output from the differential amplifier have a phase difference of π/2. To obtain direction discrimination and counting pulses, these two signals need to be shaped, first into square waves with a duty cycle of 1:1. Then, by comparing the phase of the square waves, the movement direction of the linear encoder can be determined. By counting the square wave pulses, the displacement and speed of the linear encoder can be obtained.

050S003 switch usage precautions

Power should be turned off when plugging or unplugging the connectors between the linear encoder switch and the digital readout unit. Add protective covers whenever possible, and promptly clean chips and oil splashed onto the scale. Strictly prevent any foreign matter from entering the housing of the linear encoder switch. Regularly check whether the installation and connection screws are loose. To extend the service life of the dust-proof sealing strip, apply a thin, uniform layer of silicone oil on the sealing strip, taking care not to splash it onto the glass grating etched surface. To ensure the reliability of the linear encoder switch, clean and wipe the linear encoder scale surface and the index grating surface with an ethanol mixture (each 50%) at regular intervals to keep the glass linear encoder scale surface clean. The linear encoder switch is strictly prohibited from severe vibration and impact to avoid damaging the linear encoder; if the linear encoder breaks, the linear encoder switch will fail. Do not disassemble the linear encoder switch yourself, and never arbitrarily change the relative spacing between the main grating scale and the secondary grating scale. Otherwise, it may damage the accuracy of the linear encoder switch on one hand, and cause relative friction between the main grating scale and the secondary grating scale on the other hand, damaging the chrome layer and thus the grating lines, resulting in the scrapping of the linear encoder. Care should be taken to prevent oil stains and water from contaminating the linear encoder scale surface, so as to avoid destroying the distribution of grating lines and causing measurement errors. The linear encoder switch should avoid working in environments with severe corrosive effects, so as to prevent corrosion of the grating chrome layer and the linear encoder scale surface, which would degrade the quality of the linear encoder.

Weidou Intelligent Technology specializes in selling German ELFIN switches, 050S003 proximity switches, 050S003 distance switches, 050S003 vision switches, 050S003 displacement switches, 050S003 weighing switches, 050S003 speed switches, 050S003 photoelectric switches, 050S003 position switches, 050S003 angle switches, 050S003 tactile switches, 050S003 temperature switches, 050S003 pressure switches, 050S003 flow switches, 050S003 level switches, 050S003 motion switches, 050S003 process switches. Original imports from Germany. Welcome inquiries and orders from users.