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Air ion measuring instrument

An air ion, measuring instrument technology, applied in the direction of electrochemical variables of materials, etc., can solve problems such as easy-to-recover instruments

Inactive Publication Date: 2004-12-22
福建连胜电子技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Easily restore instrument performance even after exposure to moisture

Method used

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 The polarizing plate 1 and the collecting plate 2 form a parallel plate capacitor, which are respectively fixed on the metal case 4 of the collector by the insulating support 3, wherein the collecting plate is ahead of the polarizing plate, so as to overcome the edge effect of the parallel plate electric field. The polarizing plate and collecting plate are made of copper plate with gold-plated surface, which can reduce charge recombination time and improve collection efficiency. The insulating support 3 is processed by polytetrafluoroethylene, and the middle part is wound with the damp-dispelling resistance wire 15, which can generate heat when the resistance wire is connected to the DC power supply in the machine, so as to drive away the attached moisture on the insulating support and improve the degree of insulation. The exhaust fan 5 is used to dra...

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Abstract

A measuring instrument of air ion with dehumidification function at middle part of insulation supporting frame and bottom part of collector outer shell in the ion collector can remove the humidity on the insulation supporting frame for raising the insulation ability to let the instrument to be used reliably in the wet environmental condition with the humidity up to 90%. The invented instrument has a built in rechargeable battery or to be charged with the electricity through external electric supply source. it is specially good for outdoor field use because of the advantages as above listed.

Description

technical field [0001] The invention relates to a device for measuring charged particles in the air, especially an instrument for measuring air ions. Background technique [0002] At present, known air ion measuring instrument is made of ion collector and micro current amplifier. The ion collector consists of a set of collecting plates and a set of polarizing plates forming an open capacitor structure <see figure 1& >. A polarizing voltage (DC voltage) is applied between the polarizing plate and the collecting plate. After the air ions enter the collector with the sampling airflow, under the action of the polarization electric field between the collecting plate and the polarizing plate, they are deflected to the collecting plate and the polarizing plate according to different polarities, and the charges carried by each are transferred to the collecting plate and polarized plates. The charge collected by the collecting plate falls to the ground through the microcurrent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/26
Inventor 徐先
Owner 福建连胜电子技术有限公司
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