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    β-ray density meter of surface equipment characteristics and technical specifications

     

    Device use: Used to carry out non-contact online detection of the surface density (weight of the unit area) of the lithium battery negative electrode. Measurement principle: The β-ray belongs to the charged particle flow, and when the β-ray penetrates the lithium battery negative electrode coating plate, the intensity attenuation, its attenuation meets the index law, associated with the density of the coating surface, according to the detection ray attenuation, the coating surface density Measurement. Considering the structure of the lithium battery negative electrode material, the atomic coefficient of the material, and the range of the surface density, the present device selects the β radiation source KR85. Features: Patented radiation source protection device: The β radio source used is a source V source, the safety harm is very low, and the multi-material composite shield protection is used, and the electric brake valve is opened and closed, and the radiation dose reaches environmentally friendly requirements "1μsV / h, The protected device of the radiation source has obtained national patents. A variety of specification ray beams for users to choose from: the beam size is φ9.5mm, φ12mm, φ18mm, φ22mm, and the user can choose according to requirements. Edge and first tail contour measurement function: 3mm * 38mm microporous KR85 radiation source is used for measurement of the negative electrode plate coating on both sides of the scratch region, the first tail region profile measurement. Dedicated β-ray detector: The ionization chamber structure of the multilayer electrode is high, the detection efficiency is high, the stability is good, and the ionosphere is operated in a high linear zone in the case of using a 0 ~ 2ci activity source. There is no saturation to cause nonlinearity. The β-ray detector has a precision welding seal process to ensure that the core ionization chamber does not leak in 30 years. Closed-loop control function: The function of coating machine can be achieved, and the coating quality closed loop control can be achieved. Multi-homotropic measurement function: a multi-measurement machine online measurement function, tracking measurements along the same trajectory to obtain a net coating surface density. Technical indicators: Face Density Measurement Accuracy (2σ): ± 0.15%; Repeated measurement accuracy (2σ): ± 0.08%; Measuring range: 1000g / m2 or less; β beam source: Kr85, half-life: 10.76; Radiation source activity: 200mci, 300 mci, 1000mci (according to the measured device specifications). System response time (hardware): less than 1 ms, measurement reaction time programmable; Scan speed: maximum 0.5m / s; Scan synchronization accuracy: 0.1mm; positioning accuracy: 0.04mm; Nothing failure time: β ray detector 80000h. Radiation protection: use multiple material composite protection, 0.1m from the surface of the equipment, no more than 1μsV / h (V). Be Editor in charge: Tzh, Read more

     

     

     

     

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