Instrument for automatically detecting grain and oil acidity

Abstract

The invention discloses a grain oil acid value automatic measuring instruments which includes mainframe, electrode bar and titration cell, single-purpose agitator, the electrode bar is connected with the mainframe via cable, it is characterized in that: said agitator possesses oscillating slide bar 5, said electrode bar 1 and titration cell 2 are separately set on rack 4 and 3 of said single-purpose agitator, the rack 4 is mounted on said oscillating slide bar 5, lower end of electrode bar 1 is placed in liquid of titration cell 2; said electrode bar 1 is integrated composite electrode bar which possesses two working electrodes and two indicating electrodes; said mainframe possesses titration terminal judging device and interval titration device, power supplying circuit is constant-current source circuit. The detector can avoid series of problems induced by using marking liquid in traditional titration detection and analysis, it does not need marking liquid, and design is cheap, observation is eye-catching, usage is convenient, operation is automatic, it fits for large scale production and usage widely.

Description

Technical field [0001] The present invention involves a instrument to detect food and oil and acid prices, which specifically involves a Kulun automatic titration detection instrument and its operation method. Background technique [0002] Compared with other industries, food detection methods are relatively slow to apply new technologies. Whether it is to determine the acid value of vegetable oils or the value of fatty acids of grain products, more and more opportunities are increasingly encountered to detect low acids that need to be detected.The problem of value measurement is almost all of the value of the fatty acid value of grain products in the scope of low -acid value. It is difficult to measure with the current national standard law, and it is not easy to measure stable and reliable data.At the end of the 1970s, the national establishment of a consumption oil acid price instrument that could automatically identify the indicator of the indicator of the indicator of the na...

AI Technical Summary

Problems solved by technology

At present, the general coulometric titrator manufacturers all produce according to the specifications of general instruments and high precision, such as American E.H.Sargent Company, Fisher Scientific Company, Alliced ​​Electronics Company, A.E.I. (Woolwich) Co., Ltd. and American ARC (Princeton Applied Research Corporation) are all designed and produced High-quality coulometric titrators are designed for scientific research units. Not only the equipment is huge, but also the price is very expensive. Such instruments cannot be used in routine analysis of food acid value

The most similar product and suitable for widespread use should be the manual acid value meter described in the utility model patent No. 95242284.0 authorized on March 26, 1997 and named "split-type digital acidity meter", which still relies on instructions It is still very inconvenient in the process of operation and use to use the coulometric titrator to determine the end point visually, which limits the scope of application of the acid value meter.

The coulometric titrator assembled by the Chinese Academy of Sciences at the end of the 1980s is a complex device composed of many instruments. No matter how good the test data is, it has little practical significance, and it is unlikely to be applied to food and agricultural product testing projects.

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