Calibration method for breath alcohol tester
A breath alcohol and calibration method technology, which is applied in the field of breath alcohol tester calibration, can solve problems such as troublesome configuration of the gas cylinder method, inability to guarantee calibration quality, and poor measurement repeatability, so as to achieve accurate and reliable calibration results and improve calibration Accuracy, the effect of improving measurement accuracy
Active Publication Date: 2017-01-04
深圳市大帝酒检信息系统有限公司
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[0004] With the increasing number of motor vehicles in our country, the traffic management is becoming more and more legalized and strict, making the breath alcohol tester a common equipment for law enforcement by the public security traffic department, which also puts forward higher requirements for the calibration of the breath alcohol tester At present, the calibration methods of breath alcohol testers all require the use of gas cylinders, but the gas cylinder method is not only troublesome to configure, requires special equipment, but also has poor measurement repeatability, which cannot guarantee the calibration quality
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[0028] like Figure 1 to Figure 4 Shown, the calibration method of a kind of breath alcohol tester of the present invention comprises the steps:
[0029] (a) Control the test environment: Control the test environment including controlling the test room temperature to normal temperature, and controlling the indoor temperature to ±2°C, the test pressure to standard atmospheric pressure, and the test humidity to be controlled at 20%-80%. The test process needs to maintain the same surrounding environment.
[0030] (b) Preparation of reference solution: Put 77ml of pure alcohol (relative density 0.79) into the mixing chamber with injection head, and add distilled water to mix to the design height of the mixture in the mixing chamber.
[0031] Then control the operation panel, turn on the agitator, mix the mixed solution evenly to obtain an aqueous alcohol solution, then extend the injection head on the mixing chamber into the ground bottle 1, and inject the alcohol aqueous solutio...
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Abstract
The invention discloses a calibration method for breath alcohol testers. The method comprises the following steps that 1, a testing environment is controlled; 2, a reference solution is prepared; 3, grinding jars are put into a thermostatic water bath case; 4, the standard ethanol concentration of the reference solution is obtained; 5, the breath alcohol testers are calibrated uniformly; 6, the test instruments are tidied. According to the calibration method for the breath alcohol testers, the horizontal positions and the longitudinal positions of the grinding jars in the thermostatic water bath case are changed, the obtained average value serves as the standard ethanol concentration of the reference solution, interference of differences existing in water bath temperatures of different positions in the thermostatic water bath case is eliminated, the obtained standard ethanol concentration of the reference solution has extremely high reference value, the breath alcohol testers are tested on conformance in a batched mode, the test repeatability is good, errors are determined, the breath alcohol testers are uniformly calibrated according to the errors, the calibration precision is improved, and the calibration result is accurate and reliable.
Description
technical field [0001] The invention relates to the technical field of a breath alcohol tester, in particular to a calibration method for a breath alcohol tester. Background technique [0002] In recent years, with the rapid development of my country's economy and the rapid improvement of people's living standards, the number of vehicles driving on the road has increased significantly, and traffic accidents caused by drunk driving have occurred frequently. According to relevant statistics, the number of people killed in car accidents in the world every year exceeds 600,000, leaving more than 4 million permanently disabled people, and countless injured people. Car accidents have become the number one cause of accidental death in many countries. [0003] Theoretically speaking, to judge whether it is drunk driving, the most accurate method should be to check the alcohol content in the driver's blood. The alcohol content in the blood can be obtained by checking blood, exhalati...
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IPC IPC(8): G01N33/98
CPCG01N33/98
Inventor 李仁旺孙永剑温必俊
Owner 深圳市大帝酒检信息系统有限公司
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