Calibration system and calibration method of digital dust meter
A calibration system and calibration method technology, which is applied in the field of digital dust meter calibration system, can solve problems such as irregularities, different methods, and confusion of measurement data, and achieve the effect of improving accuracy
Active Publication Date: 2017-12-08
HENAN PROVINCE INST OF METROLOGY
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Problems solved by technology
The current situation is that the quality control techniques of the manufacturers are not only in different ways, but also very irregular. Some of them only evaluate the flow parameters, and our country lacks relevant technical equipment and technical specifications for the traceability of the instrument, which also leads to the measurement The data is chaotic and the comparability is poor. Therefore, a set of digital dust meter calibration system and its calibration method are established to improve the value traceability transmission system of this type of instrument, standardize the performance evaluation of the instrument, and standardize the value traceability of the digital dust meter. manage
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[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Elements and features described in one drawing or one embodiment of the present invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that representation and description of components and processes that are not related to the present invention and known to those of ordinary skill in the art are omitted from the drawings and descriptions for the purpose of clarity. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the ar...
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Abstract
The invention discloses a calibration system of a digital dust meter and a calibration method thereof. The calibration system includes a calibration system of a cutting head and a calibration system of the mass concentration of a dust meter; the calibration device of the cutting head includes a compressed air processing device, and the compressed air The processing device is connected to the monodisperse particle generator, and the monodisperse particle generator is connected to the uniform mixing box, and the uniform mixing box is connected to the dust removal device and the constant velocity sampling head respectively, and the two constant velocity sampling heads are connected to the standard cutting head and the inspected cutting head respectively The inspection cutting head is connected to the first filter membrane, the standard cutting head is connected to the second filter membrane, the first filter membrane and the second filter membrane are connected to the sampling device and the automatic weighing device at the same time; the calibration system of the mass concentration of the dust meter includes a compressed air processing device, Dust generator, uniform mixing box, dust removal device, first standard cutting head, second standard cutting head, digital dust meter, third filter membrane and sampling device, the third filter membrane is connected to automatic weighing device. The invention enables standardized management of the verification work of the dust meter, and improves the accuracy of instrument measurement.
Description
technical field [0001] The invention relates to the field of dust measurement, in particular to a calibration system and a calibration method for a digital dust meter. Background technique [0002] Digital dust meter is an instrument used to measure various dust mass concentrations, including respirable dust meter, explosion-proof dust meter, microcomputer dust meter, which are widely used in indoor air quality testing, workplace air quality testing and outdoor air quality testing. The error of the mass concentration indication of the dust meter and the accuracy of the cutting efficiency are important parameters that affect the measurement results. The current situation is that the quality control techniques of the manufacturers are not only in different ways, but also very irregular. Some of them only evaluate the flow parameters, and our country lacks relevant technical equipment and technical specifications for the traceability of the instrument, which also leads to the m...
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IPC IPC(8): G01N15/06
Inventor 樊玮崔耀华邹晓华师恩洁邹君臣李建鹏孙彦楷陈睿锋暴冰周新刚何力人周文辉张家铭
Owner HENAN PROVINCE INST OF METROLOGY