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Precision calibrating method of container volume

A calibration method and container technology, applied in the direction of volume measuring instruments/methods, container/cavity capacity measurement, instruments, etc., can solve the problems of high container volume error, cumbersome operation, limited reading accuracy, etc., and achieve the effect of accurate calibration

Inactive Publication Date: 2005-09-28
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

This method is cumbersome to operate and usually requires the cooperation of two people
In addition, because the reading accuracy of the measuring cylinder is limited, and the atmospheric pressure changes with the location and time, the measured container volume has a relatively high error.

Method used

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  • Precision calibrating method of container volume
  • Precision calibrating method of container volume
  • Precision calibrating method of container volume

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Embodiment Construction

[0028] The method of the present invention uses a device such as figure 1 As shown, the device includes a first container 1, a temperature transmitter 2, a pressure transmitter 3, a valve 4, a steel ball 5, and a second container 6. The first container 1 is equipped with a temperature transmitter 2, a pressure transmitter Container 3, steel ball 5 is housed in the second container 6, the first container 1 and the second container 6 are connected by pipeline, and valve 4 is arranged on the pipeline.

[0029] The invention provides a simple and accurate method for calibrating the volume of a container, which includes the following steps:

[0030] 1) With stable properties and small helium adsorbed on the wall as the calibration gas.

[0031] 2) The temperature of the test environment is measured by the temperature transmitter 3 , and the pressure transmitter 2 is used to measure the experimental pressures of the first container 1 and the second container 6 .

[0032] 3) First,...

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Abstract

The simple and precise container volume calibrating method adopts helium with stable stability and less wall adsorption as calibrating gas. The calibration includes the following steps: recording the helium pressure and temperature in the operation, establishing dualistic first order equation about the volumes of the first container and the second container based on the MBWR equation and law of conservation of mass; adding steel balls in known volume to alter the volume of the second container; establishing dualistic first order equation about the volumes of the first container and the second container with altered volume similarly; reducing the equation set to obtain several values of the container volumes; calculating the average values and medium values as the final calibrated values optionally. The present invention makes it possible to calibrate the volume of container precisely.

Description

technical field [0001] The invention relates to a method for calibrating the volume of a container, and in particular provides a simple and accurate method for calibrating the volume of the container. Background technique [0002] When the volumetric method is used to test the adsorption gas curve of the material, the volume of each part of the test equipment must be calibrated first. At present, the volume of each part is basically calibrated by the graduated cylinder drainage method. Its basic principle is to fill the container that needs to be calibrated with gas, and then exhaust it into the measuring cylinder filled with water. Due to the filling of gas, a part of the volume of water is excluded, and the gas filled is determined by the water level difference between the two times in the container. At the same time, move the position of the external rubber tube to make the liquid level inside the rubber tube equal to the liquid level in the measuring cylinder so as to e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F17/00
Inventor 程宏辉陈德敏杨柯
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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