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Portable radon measuring instrument calibrator

A technology of calibrator and radon measuring instrument, applied in the direction of instruments, scientific instruments, measuring devices, etc., can solve the problems of inability to realize automatic control, increase ore or radon source, etc., and achieve the effect of light weight and small volume

Inactive Publication Date: 2015-12-02
EAST CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, to change the radon concentration value, it is necessary to increase the amount of ore or radon source, and automatic control cannot be realized

Method used

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  • Portable radon measuring instrument calibrator
  • Portable radon measuring instrument calibrator
  • Portable radon measuring instrument calibrator

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Embodiment Construction

[0025]The following examples are used to illustrate the present invention, but not to limit the scope of the present invention.

[0026] This implementation case designs a complete portable radon meter calibrator. The outline of the calibrator case is a box shape of about 54 (height) x 42 (width) x 42 (thickness) cm. The radon chamber is located on the upper part of the calibrator, the cavity size is about 44 (height) x 38 (width) x 38 (thickness) cm, and the volume is about 63.5 liters. The radon box is an airtight structure to ensure that there is no leakage between the radon box and the outside world. The lower part of the calibrator case is a drawer-type control case, which contains solid radon source, dry filter, solenoid valve, micro air pump, control circuit board, power module and other components. The stirring fan is installed inside the radon box to evenly stir the radon gas in the radon box; the sampling hole is connected with the radon box and consists of 4 norma...

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Abstract

The invention relates to a portable radon measuring instrument calibrator. The calibrator is mainly manufactured by light materials such as aluminium alloy, the whole device is in an integrated structure, the size of the whole device is less than 0.5 cubic meters, the total amount is less than 30 kilograms, and the carrying and the transportation during outside operation are facilitated. The portable radon measuring instrument calibrator includes a cabinet, a radon case, a stirring fan, a sampling hole, a solid radon source, a minisize air pump, a drying filter, a plurality of solenoid valves, a plurality of connecting pipelines, a control circuit board, an LCD display screen, a button, and a power supply module. The calibrator is set at three concentration points of 800Bq / m<3>, 1500Bq / m<3>, and 3000Bq / m<3>, the concentration is in opening circular type automatic stabilization control by a microprocessor without the need for an external radon concentration monitoring apparatus. The portable radon measuring instrument calibrator is small in size and light in weight, and is free of complex control devices such as a computer, the calibrator can be carried to a user's site and can be widely applied to the on-site calibration of fixedly installed radon measuring instruments used in the fields of earthquake forecasting and environment monitoring.

Description

technical field [0001] The invention relates to a calibrator for a radon measuring instrument, and belongs to the technical field of nuclear electronics instruments and ionizing radiation measurement. According to the expected value of radon concentration required by the user, the device can automatically generate a stable concentration of radon gas under the expected value in a small closed space (40-60 liters), which is used for measurement by the radon measuring instrument to be calibrated, so as to complete the measurement. Calibration or calibration of a radon meter. The device is an integrated structure, the volume of the whole machine is less than 0.5 cubic meters, and the total volume is less than 30 kilograms. It is easy to carry and transport when going out to work, and can be applied to the field calibration of fixed-installation radon detectors. Background technique [0002] Radon and short-lived progeny are in a state of radioactivity balance in the natural env...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/00
Inventor 王仁波张雄杰瞿金辉黄凡
Owner EAST CHINA UNIV OF TECH
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