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TRANCERIE sensor pressure sensor for level measurement. The static pressure submersible level transmitter (level gauge) is based on the principle that the static pressure of the measured liquid is proportional to the height of the liquid. It uses advanced foreign isolated diffused silicon sensitive elements or ceramic capacitive pressure sensitive sensors to convert static pressure into electrical signals, which are then converted into standard electrical signals (generally 4~20mA/15VDC) after temperature compensation and linear correction.

TRANCERIE sensor structure

It consists of two parts: the scale grating and the grating read head. The figure on the right shows the structure of the linear encoder scale. The key component of the grating detection device is the grating read head, which comprises a light source, a condenser lens, an index grating, photoelectric elements, and an adjustment mechanism. There are many structural forms of grating read heads. Based on their structural characteristics and application scenarios, they are classified into direct-reception read heads (also known as silicon photovoltaic cell read heads, mirror-image read heads, beam-splitter read heads, and metal-grating reflective read heads).

TRANCERIE sensor principle

The essence of the grating displacement sensor is to measure position using the grating pitch as a standard ruler. High-resolution grating rulers are generally expensive and difficult to manufacture. To improve system resolution, Moiré fringes need to be subdivided, and grating ruler sensor systems mostly use electronic subdivision methods. When two gratings overlap at a small angle, Moiré fringes are generated in the 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 one Moiré fringe width, placing 4 photoelectric devices at certain intervals can achieve electronic subdivision and direction judgment functions. For example, for a grating ruler with 50 line pairs/mm, its grating pitch is 0.02mm. If four-fold subdivision is used, counting pulses with a resolution of 5μm can be obtained, which has reached a very high precision in general industrial measurement and control. Since displacement is a vector, both its magnitude and direction need to be detected, so 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 usually used. The 4 photoelectric signals obtained from 4 photosensitive devices are sent to the input terminals of 2 differential amplifiers respectively. The two signals output from the differential amplifier have a phase difference of π/2. To obtain direction judgment 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 grating ruler can be determined. By counting the square wave pulses, the displacement and speed of the grating ruler can be obtained.

TRANCERIE sensor precautions for use

When plugging and unplugging the connector of the grating ruler sensor and the digital display meter, the power should be turned off. Add a protective cover as much as possible, and clean up chips and oil splashed on the ruler in time to strictly prevent any foreign matter from entering the housing of the grating ruler sensor. Regularly check whether the installation connecting screws are loose. To extend the life of the dust-proof sealing strip, a thin layer of silicone oil can be evenly applied to the sealing strip, taking care not to splash it onto the glass grating engraved surface. To ensure the reliability of the grating ruler sensor, the grating ruler surface and the index grating surface can be cleaned and wiped with an ethanol mixture (50% each) at regular intervals to keep the glass grating ruler surface clean. Grating ruler sensors are strictly prohibited from severe vibration and dropping to avoid damaging the grating ruler. If the grating ruler breaks, the grating ruler sensor will fail. Do not disassemble the grating ruler sensor yourself, and do not arbitrarily change the relative spacing between the main grating ruler and the secondary grating ruler. Otherwise, it may damage the precision of the grating ruler sensor on one hand, and cause relative friction between the main grating ruler and the secondary grating ruler on the other hand, damaging the chromium layer and thus the grating lines, resulting in the scrapping of the grating ruler. Care should be taken to prevent oil stains and water from contaminating the grating ruler surface to avoid destroying the distribution of grating lines and causing measurement errors. Grating ruler sensors should try to avoid working in environments with severe corrosion to avoid corroding the grating chromium layer and the grating ruler surface, thereby damaging the quality of the grating ruler.

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