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High precision electronic balance

An electronic balance, high-precision technology, applied in the direction of measuring devices, instruments, weighing, etc., can solve the problems of inaccurate measurement of object mass, error of measurement results, etc., achieve accurate measurement results, small errors, and eliminate the difference in buoyancy

Inactive Publication Date: 2012-11-14
昆山旭虹精密零组件有限公司
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

The heat capacity of the electronic balance weighing room is generally smaller than that of the lower main part of the electronic balance. When the ambient temperature changes significantly or the electronic balance emits heat during operation, a temperature difference will occur between the weighing room and the lower main part of the electronic balance. The air density will be different, so the buoyancy of the object in the weighing pan is different from the buoyancy of the calibration device in the electronic balance, which will cause errors in the measurement results and inaccurate object mass measurement

Method used

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  • High precision electronic balance

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Embodiment Construction

[0012] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0013] see figure 1 , the present invention provides a high-precision electronic balance, including a push-pull cover 1, a weighing pan 2, a base plate 3, a moving plate 4 and a calibration device 5, four first through holes 8 are arranged on the base plate 3, and the base plate 3 The right end is fixed with a motor 10, four second through holes 9 are arranged on the moving plate 4, a gear 11 is fixed at the right end of the moving plate 4, and the shown motor 10 drives the moving plate 4 to move through the gear 11.

[0014] In the present invention, the weighing pan 2 is surrounded by a first temperature detector 6 , and the calibration device ...

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Abstract

The invention discloses a high precision electronic balance which comprises a push-pull cover, a weighing tray, a base plate, a movable plate and a calibration device. The base plate is provided with four first through holes, a motor is fixed at the right end of the base plate, the movable plate is provided with four second through holes, a gear is fixed at the right end of the movable plate, and the motor drives the movable plate to move through the gear. The high precision electronic balance enables air temperature around the weighing tray to be close to air temperature around the calibration device through air convection, eliminates difference of buoyancy of objects in the weighing tray and calibration device buoyancy, and is small in measuring result error and accurate in measuring result.

Description

technical field [0001] The invention relates to the field of object weighing, in particular to a high-precision electronic balance. Background technique [0002] The electronic balance is a kind of object weighing equipment with high precision and good sensitivity, and the change of the external environment has a great influence on the measurement results of the electronic balance. The heat capacity of the electronic balance weighing room is generally smaller than that of the lower main part of the electronic balance. When the ambient temperature changes significantly or the electronic balance emits heat during operation, a temperature difference will occur between the weighing room and the lower main part of the electronic balance. The air density will be different, so the buoyancy of the object in the weighing pan is different from the buoyancy of the calibration device in the electronic balance, which will cause errors in the measurement results and inaccurate measurement...

Claims

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Application Information

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IPC IPC(8): G01G21/00G01G23/01
Inventor 李飞
Owner 昆山旭虹精密零组件有限公司
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