Glass hydrometer detecting/calibrating device

Abstract

The invention relates to a glass hydrometer detecting / calibrating device. The glass hydrometer detecting / calibrating device comprises a holder, a thermostatic bath, a glass measuring cylinder, a real-time calibration liquid level monitoring device, a liquid level adjusting device, a glass hydrometer positioning device, a scale line recognizing device, a weighing device and a computer. The novel glass hydrometer detecting / calibrating device is developed based on the fundamental principle, namely a static liquid weighing method and for solving the major problems of an existing device. The whole device is composed of the thermostatic device, the scale line recognizing device, the glass hydrometer positioning device, the real-time calibration liquid level monitoring device, the liquid level adjusting device and the computer system, and therefore, the calibration of any scale point of a glass hydrometer in the whole measuring range of (500-3000) kg / m3 can be realized by use of only one environment-friendly calibration liquid; the calibration process can be finished by use of manual operations or automatically.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of detection and calibration of glass buoymeters such as density meters, alcohol meters and sugar meters, and in particular relates to a detection and calibration device for glass buoyancy meters. Background technique: [0003] In order to test the glass buoyancy meter, my country has formulated the glass buoyancy meter verification regulations JJG86-2001 and JJG42-2001, and the direct comparison method is used in the regulation to carry out the verification of the glass buoyancy meter. The direct comparison method, that is, the direct comparison between the standard glass float meter and the tested glass float meter, this verification method has its own defects, which are summarized as follows: [0004] 1. When testing different marks on the glass buoy gauge, it is necessary to replace the testing fluid with different densities; however, most of the testing fluids currently used are toxic and f...

AI Technical Summary

Problems solved by technology

[0005]2. It is impossible to test the glass buoyancy meter with a low-range measurement density less than 650kg / m3), because no test solution with stable density has been found so far

[0006] For the verification of glass buoyancy gauges with a density less than 650kg / m3, some domestic units have made some useful measures based on the static weighing method exploration, but most of them stay at the stage of simple model tests, and there is no mature verification device that can be popularized

Moreover, the existing devices all use manual reading, and the verification of different scale points is realized by manually pulling the tested glass buoyancy meter. The verification process is cumbersome, and the human error is relatively large.

The natural volatilization of the test liquid itself and the fluctuation of the liquid level during the test process will also introduce certain measurement errors. It is necessary to manually observe the tangency between the liquid level and the scale line to be tested in real time, which is prone to large human errors and low work efficiency. For the above reasons, the glass float meter verification method based on the static weighing method cannot be popularized and promoted in my country.

Images