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Weighing method testing device and water steam transmittance measurement device

A technology of testing device and weighing method, which is applied in the direction of measuring device, material weighing, instrument, etc., can solve the problems that the water vapor transmission rate test cannot be applied, so as to improve the detection accuracy and service life, ensure stability, and improve The effect of stability

Pending Publication Date: 2018-06-01
LABTHINK INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing gravimetric equipment with a barrier structure is more suitable for continuous weighing mode in non-high humidity environment, and cannot be applied to water vapor transmission rate test in high humidity environment

Method used

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  • Weighing method testing device and water steam transmittance measurement device
  • Weighing method testing device and water steam transmittance measurement device
  • Weighing method testing device and water steam transmittance measurement device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Such as figure 1 As shown, in this embodiment, the gravimetric test device includes a test chamber.

[0056] The gravimetric test device of the present embodiment is arranged on the base 1, wherein a cavity bottom plate 13 is arranged at the bottom of the test chamber, which divides the gravimetric test device into two chambers, which are respectively the first chamber 2. and the second chamber 7 . Wherein, the weighing element 14 is arranged in the first cavity 2; the sample is tested in the second cavity 7, and the second cavity 7 is a testing cavity.

[0057] The test cavity of the weighing method test device of this embodiment is provided with an opening, and a weighing assembly for weighing the sample to be tested is pierced in the opening, and the weighing assembly is connected with a driving part, and the driving part is used to control The weighing component moves up and down, and when the weighing component falls to the lowest point, a seal is passed between ...

Embodiment 2

[0077] Such as figure 2 As shown, in this embodiment, on the basis of the first embodiment, the first sealing member 8 is installed at the opening of the cavity bottom plate 13, and the first sealing member 8 is also provided with a gland 19, wherein the gland 19 passes through the opening of the cavity bottom plate 13. Two screws 18 are fixed on the bottom plate 13 of the cavity. This serves to improve the tightness between the test chamber and the weighing cell.

[0078] In addition, the first sealing member 8 is installed at the opening of the cavity bottom plate 13 , and the gland 19 can also be installed on the tray 10 . When the tray 10 falls, the first sealing member 8 contacts and seals with the gland 19 . This serves to improve the tightness between the test chamber and the weighing cell.

[0079] The other structures of the gravimetric testing device of this embodiment are the same as those of the first embodiment, and the working principle is also the same as tha...

Embodiment 3

[0082] Such as image 3 As shown, in this embodiment, on the basis of the second embodiment, the first sealing member 8 is changed to an L shape, so that the contact surface between the cone surface of the tray and the sealing ring is increased by one circle, double protection, and the sealing effect is more reliable.

[0083] The other structures of the gravimetric testing device of this embodiment are the same as those of Embodiment 2, and the working principle is also the same as that of Embodiment 2.

[0084] The present invention also provides a water vapor transmission rate tester, which includes at least one such as image 3 The gravimetric test setup is shown.

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Abstract

The invention discloses a weighing method testing device and a water steam transmittance measurement device. The weighing method testing device includes a testing chamber provided with an opening. A weighing assembly passes through the opening and is used for weighing a to-be-tested sample. The weighing assembly is connected to a driving unit, which is used for control the weighing assembly to move vertically; when the weighing assembly descends to the lowest position, the testing chamber is sealed through a sealing member between the opening and the weighing assembly. The device has excellentseal and barrier effects, increases detection precision and service life of the weighing assembly, guarantees environment stability in the testing chamber, and also satisfies demands in different modes of continuous weighing and non-continuous weighing.

Description

technical field [0001] The invention belongs to the field of weighing method testing, in particular to a weighing method testing device and a water vapor transmission rate tester. Background technique [0002] When using a gravimetric water vapor transmission rate tester to test parameters such as moisture permeability and migration of a sample, it is often necessary to test in a specific environment such as a certain temperature, humidity or pressure. High-precision weighing elements are easily affected by temperature and humidity, resulting in unstable detection results of weighing equipment, which will eventually reduce the detection accuracy of the equipment. [0003] In the gravimetric water vapor transmission rate tester, in order to ensure the stability of the environment in the chamber used for testing (hereinafter referred to as the test chamber) and the accuracy of the test sample (hereinafter referred to as the sample) is not affected by the temperature and humidi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/00
CPCG01N5/00
Inventor 姜允中
Owner LABTHINK INSTR