Calibration device and method for sampling current of concrete chloride ion diffusion coefficient tester
A chloride ion diffusion and sampling current technology, applied in measuring devices, measuring electrical variables, instruments, etc., can solve the problems of insufficient structural durability, poor quality, short life, etc., and achieve the effect of convenient operation and broad application prospects.
Active Publication Date: 2021-03-16
中国测试技术研究院电子研究所
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However, at present, many buildings made of concrete have problems such as poor quality and short service life, and the lack of structural durability is the main reason for this phenomenon.
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[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below, obviously, the described embodiments are only some of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) If the specific posture changes, the directional indication will also change accordingly.
[0028] In addition, in the present invention, descriptions such as "first", "second" and so on are used for description purposes only, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of indicated technical features. Thus, the features defined as "first" and...
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The invention discloses a calibration device and method for the sampling current of a concrete chloride ion diffusion coefficient tester, the whole calibration device is mainly composed of a current sampling module, a voltage sampling module and a variable resistance module, and the core technology of the calibration device is that a MOS is used for simulating a load, replacing a discrete resistorand precisely measuring the current at the same time so as to calibrate the sampling current. The sampling current calibration device is convenient to use and operate, overcomes the defect of relatively high uncertainty caused by manual control in the process of respectively measuring by adopting discrete instruments, and provides important technical support for a metrological verification mechanism to carry out calibration work of the instruments and formulate future regulations or specifications; important technical guarantee is also provided for engineering construction taking concrete asa main material, and the device has a wide application prospect.
Description
technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a calibration device and method for sampling current of a concrete chloride ion diffusion coefficient measuring instrument. Background technique [0002] Concrete is currently the most widely used building material in the construction industry. But at present, many buildings made of concrete have problems such as poor quality and short service life, and the lack of structural durability is the main reason for this phenomenon. Therefore, in the implementation of construction projects, durability test instruments must be used to test the properties of concrete. The Concrete Chloride Ion Flux Meter is a special instrument for this type of test. Its basic principle is: at a certain temperature, by applying an external electric field to the concrete, the migration speed of chloride ions in the concrete is accelerated, and then the current passing through th...
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IPC IPC(8): G01R35/00G01N13/00
CPCG01N13/00G01R35/005
Inventor 肖鹏王幸杨雪梅李貌马轲瀛何山王巍李竞爽唐俊代崇敬李强李龙王晓晖白凌志王晨光李昕
Owner 中国测试技术研究院电子研究所