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Non-contact electrometer calibrating device and method

A non-contact, calibration device technology, used in the field of testing and measurement, can solve the problem that the front surface of the non-contact electrostatic meter cannot be guaranteed to be parallel to the standard plate electrode, the calibration requirements of high-precision electrostatic meters cannot be met, and the distance of the non-contact electrostatic meter cannot be guaranteed. Adjustment is inconvenient and other problems, to achieve the effect of improving measurement stability, small uncertainty, and avoiding jitter

Active Publication Date: 2017-02-22
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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Problems solved by technology

However, when calibrating the electrostatic meter, it is inconvenient to adjust the distance of the non-contact electrostatic meter being calibrated, the measurement accuracy of the actual distance is low, and it is impossible to ensure that the front surface of the non-contact electrostatic meter being calibrated is parallel to the standard flat electrode , which in turn leads to a measurement uncertainty error of 2%-5% of the calibration device, which cannot meet the calibration requirements of high-precision electrostatic meters

Method used

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  • Non-contact electrometer calibrating device and method
  • Non-contact electrometer calibrating device and method

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Embodiment Construction

[0030] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0031] The technical solutions provided by various embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0032] figure 1 It is a schematic diagram of an embodiment that the device of the present invention includes a mechanical part; the device of the present invention includes a mech...

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Abstract

The invention provides a non-contact electrometer calibrating device and method and aims at reserving a standard distance between the front end face of a non-contact electrometer and a standard flat plate electrode during calibration, improving the position accuracy of the electrometer and reducing test amount uncertainty difference of the calibrating device. The non-contact electrometer calibrating device comprises a standard planar electrode, a flat plate, a displacement platform, a fixing part and a depth ruler. The electrical portion includes a high-voltage source, a voltmeter, a voltage divider and a protective resistor. The non-contact electrometer calibrating method comprises the steps of electrometer installation, standard distance calibration, electrometer positioning and voltage testing. The stability during non-contact electrometer measurement and measurement value stability are improved. According to the best embodiment of the invention, the standard distance accuracy is up to 0.01 mm, and the standard uncertainty is 0.5% or below.

Description

technical field [0001] The application relates to testing and measurement technology, in particular to a device and method for calibrating a non-contact electrostatic meter. Background technique [0002] The electrostatic voltage on the surface of insulating objects must be measured with a non-contact electrostatic meter. When the non-contact electrostatic meter is tested and calibrated, the front face of the electrostatic meter is used to approach the measured object, and the measured value is the most accurate at a standard distance. When using an electrostatic meter for testing, the inaccurate distance between the electrostatic meter and the measured object will cause errors. [0003] When calibrating the electrostatic meter, the standard flat electrode is generally used, and the distance regulator is used to change the relative distance between the electrostatic meter and the standard flat electrode until the distance between the front end of the electrostatic meter and...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00
CPCG01R35/005
Inventor 张建永朱珠胡耀元贾云涛岳伟张胜强
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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