Accelerated life testing method of water quality analyzer

A technology of accelerated life test and water quality analyzer, which is applied in the direction of testing water, material inspection products, etc.

Active Publication Date: 2014-07-30
ZHEJIANG MEASUREMENT SCI RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The accelerated life test research for water quality analyzers is still in a blank stage, so far there is no accelerated life test method suitable for water quality analyzers in my country

Method used

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  • Accelerated life testing method of water quality analyzer

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] The method of the present invention includes: putting the water quality analyzer into a comprehensive environmental test chamber, controlling the comprehensive environmental test chamber to perform periodic changes in temperature, and performing a cycle test measurement on the water quality analyzer; Carry out four water sample measurements with successively increasing measurement temperatures and zero sample and standard sample measurements immediately after each water sample measurement; failure judgments are made at the end of each zero sample measurement and standard sample measurement in each cycle; The measurement is carried out periodically until the failure of the water quality analyzer, and the failure time and the temperature and humidity at the time of failure are recorded.

[0024] In zero sample and standard sample measurement, zero sample measureme...

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Abstract

The invention discloses an accelerated life testing method of a water quality analyzer. The accelerated life testing method of the water quality analyzer comprises the following steps: putting the water quality analyzer into an integrated environmental testing chamber and controlling the integrated environmental testing chamber to change temperature periodically to measure the water quality analyzer through cyclic tests; in a single period, calibrating the water quality analyzer, then measuring four water samples in sequence with sequentially increased measurement temperatures and then measuring zero samples and standard samples after measuring the water samples; judging invalidation respectively in each period after the measurement on each zero sample and each standard sample is ended; measuring circularly in periods till the water quality analyzer is invalid, and recording invalid time and temperature and humidity when the water quality analyzer is invalid. With the temperature as accelerated life stress, an improved step accelerated life testing method is applied to the reliability evaluation of the water quality analyzer, and the reliability of the water quality analyzer can be tested by virtue of few test samples and relatively short time.

Description

technical field [0001] The invention relates to a reliability test method of a water quality analyzer, in particular to an accelerated life test method of a water quality analyzer. Background technique [0002] As an important instrument for environmental quality monitoring and pollution source discharge monitoring and control, water quality analyzers play an important role in improving the reliability of the instruments and ensuring the long-term stable operation of the water quality analysis process by analyzing their reliability. The conventional life test is to test the product under the specified use and maintenance conditions, and analyze the test results to obtain the reliability level of the product. However, with the rapid development of modern production and science and technology, the life of water quality analyzers is longer. If the life test method of water quality analyzer under normal test conditions is used to evaluate its reliability level, it often takes a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/18
Inventor 缪建严瑾沈广月孙坚邵建文
Owner ZHEJIANG MEASUREMENT SCI RES INST
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