An accurate method for measuring the thickness of tobacco leaf samples
A technology for accurate measurement and sample thickness, which is applied in the measurement of tobacco leaf thickness and the measurement of tobacco leaf thickness. Wide range, strong representation, and the effect of reducing errors
Active Publication Date: 2016-03-09
CHINA NAT TOBACCO QUALITY SUPERVISION & TEST CENT
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Problems solved by technology
[0003] At present, the method of measuring the thickness of tobacco leaves is generally measured by a thickness gauge. The main process is to use the thickness gauge probe to give a certain pressure to the sample measurement point, and then to read the data through the sensing of the probe contact point. In the actual operation process, it is found that the measurement process is affected by human operation. The effect of the test is relatively large, the operation is slightly deviated, the result data before and after the difference is very large, the operation stability is very poor, the representativeness of the result is not strong, and the pressure given by the probe is not easy to control, the tobacco leaf is not a hard object, under different pressures Its thickness changes, and the measurement result cannot accurately reflect the thickness of the tobacco leaf, and the accuracy of the result is not great
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[0019] The present invention will be further described below in conjunction with examples, and compared with the thickness meter measurement, but it does not limit the present invention.
[0020] For a whole piece of cured tobacco leaf in the middle, the thickness gauge and the invented method are respectively used for measurement.
[0021] 1. Thickness gauge measurement
[0022] Put the sample blade into the thickness gauge probe for measurement, and measure in three regions: tip, middle and base, calculate the average value, and repeat 3 times. The measurement results are shown in Table 1:
[0023] Table 1 Thickness Gauge Determination Method Results
[0024]
[0025] As shown in Table 1, among the three measurement results, the maximum difference of the mean reaches 0.03mm, and the standard deviation is 0.015mm.
[0026] 2 The inventive method measures
[0027] A. Sample sampling
[0028] Lay the tobacco leaf samples to be tested flat, and use a circular hole punch...
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Abstract
The invention discloses a method for accurately determining thickness of tobacco leaf sample, which is characterized by measuring thickness of tobacco leaf by means of determining volume of a certain area of tobacco leaf. The method comprises the following specific steps of: A, punching hole on a tobacco leaf sample for sampling, and calculating the punched acreage; B, processing the sample; C, determining volume of the sample by drainage; D, calculating thickness of the tobacco leaf. The method provided by the invention overcomes error interference on determination of single sample caused by manual operation; compared with the existing determination method, the method has the following advantages: (1) sampling range is wide, and representativeness is strong; (2) the obtained sample is processed integrally, volume of the sample is determined, error caused by single determination is reduced, and accuracy is higher; (3) operation process of the method is easy to control, result stability is high, and repeatability is excellent.
Description
technical field [0001] The invention belongs to the technical field of tobacco leaf appearance quality, and mainly relates to a method for measuring the thickness of tobacco leaves, specifically a method for measuring the thickness of tobacco leaves by measuring the volume occupied by a certain area of tobacco leaves. Background technique [0002] Tobacco leaf thickness is expressed in the national standard GB2635 of flue-cured tobacco by the appearance quality of tobacco leaves. The thickness of tobacco leaves is different in different parts of the tobacco leaves. Generally speaking, the thickness of the leaves increases gradually according to the part of the tobacco leaves from bottom to top. The thickness is different, and the quality of the tobacco leaves is also different. Tobacco leaves with moderate thickness are of high quality, while tobacco leaves that are too thin and too thick are of low quality. Tobacco leaves that are too thick generally have strong strength,...
Claims
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IPC IPC(8): G01B21/08G01N1/04G01N1/28G01F17/00
Inventor 何声宝张威罗安娜王英元冯晓民刘楠闫新甫
Owner CHINA NAT TOBACCO QUALITY SUPERVISION & TEST CENT