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Measurement calibration method of falling number tester

A calibration method and measuring instrument technology, applied in food testing, starch contamination testing, material inspection products, etc., can solve the problems of no calibration method and reduced measurement accuracy

Inactive Publication Date: 2012-06-27
HENAN OF CHINA CERTIFICATION & INSPECTION GROUP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, there is no complete and practical calibration method for the falling number measuring instrument (Perten 1900) used in the laboratory at present after the measurement accuracy is reduced.

Method used

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  • Measurement calibration method of falling number tester
  • Measurement calibration method of falling number tester
  • Measurement calibration method of falling number tester

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Embodiment Construction

[0038] The method for measuring and calibrating the falling number measuring instrument of the present invention first places the calibrated measuring instrument in an environment with a room temperature of 10-30°C, the temperature change during the calibration process does not exceed 5°C, and the room temperature and humidity are controlled at 20°C. %~85%RH, there is no magnetic field or mechanical vibration around; then follow the steps below:

[0039] The first step, the calibration of the falling number meter timer

[0040] Simultaneously press the timing switch of the falling number measuring instrument and the stopwatch for calibrating the timing, time 100s, 200s, 300s, and 400s twice each; the accuracy of the timing stopwatch is: the division value is not greater than 0.1s; The time error of the timer t c :

[0041]

[0042] In the formula, t1—the time value measured by the stopwatch; t2—the time value displayed by the falling number measuring instrument;

[0043]...

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Abstract

The invention discloses a measurement calibration method of a falling number tester. The measurement calibration method comprises the following steps of: putting the tester to be calibrated in an environment at the room temperature of 10-30 DEG C at first, wherein in the calibration process, the temperature change is not beyond 5 DEG C, the room-temperature humidity is controlled within a range of 20-85% RH, and no magnetic field or mechanical vibration is around the environment; and then carrying out the following steps of: 1, calibrating a timer of the falling number tester; 2, calibrating water bath temperature of the falling number tester; 3, calibrating the overall performance of the falling number tester; and 4, processing a measurement result, averaging test results in the first, second and third steps to obtain a test result of the falling number tester. The measurement calibration method disclosed by the invention is used for effectively calibrating the measurement precision of the falling number tester (wave pass 1900) used in the current laboratory, so that negative effects in subsequent production caused by measured incorrect measurement data when the measurement precision of the falling number tester is decreased can be avoided.

Description

technical field [0001] The invention relates to a falling number measuring instrument, in particular to a measurement and calibration method for a falling number measuring instrument. Background technique [0002] The falling number tester uses the flour suspension to be decomposed and liquefied by the action of α-amylase after rapid gelatinization. The speed of starch liquefaction is the reflection of α-amylase activity. According to the falling value, it can guide the baking of bread. However, there is no complete and practical calibration method for the falling number measuring instrument (Perten 1900) used in the laboratory at present after the measurement accuracy is reduced. Contents of the invention [0003] The purpose of the present invention is to provide a measurement calibration method for the measurement characteristics research of different components and applicable to the falling number measuring instrument by combining with the conditions of use of the inst...

Claims

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Application Information

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IPC IPC(8): G01N33/10
Inventor 袁野王永生许文博祁欣刘伟
Owner HENAN OF CHINA CERTIFICATION & INSPECTION GROUP
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