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Trace quantity dissolved oxygen instrument test calibration system and calibrate method thereof

A technology of dissolved oxygen meter and calibration system, which is applied in the direction of instruments, measuring devices, scientific instruments, etc., to achieve the effect of strong operability, extended verification range and reliable principle

Inactive Publication Date: 2008-05-21
NAT INST OF METROLOGY CHINA +1
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  • Abstract
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Problems solved by technology

[0004] The present invention is to provide a trace dissolved oxygen meter verification and calibration system and its calibration method to solve the technical problem of verifying the values ​​measured by the trace dissolved oxygen meter and making the technical indicators more accurate and reliable

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  • Trace quantity dissolved oxygen instrument test calibration system and calibrate method thereof
  • Trace quantity dissolved oxygen instrument test calibration system and calibrate method thereof
  • Trace quantity dissolved oxygen instrument test calibration system and calibrate method thereof

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Embodiment Construction

[0046] As shown in Figures 1, 2 and 3, they are schematic diagrams of the appearance structure and system structure of the present invention. The trace dissolved oxygen meter calibration system 100 is a trace dissolved oxygen water closed circulation system, wherein the system 100 includes a water supply device 10, Gas-water separation device 20, trace oxygen water treatment device 40 and computer control device 70;

[0047]The replenishment device 10 includes a replenishment pump 11 connected to the water inlet, and the output end of the replenishment pump 11 is successively connected with a fiber filter 12, a granular activated carbon filter 13, a sintered activated carbon filter 14, and a reverse osmosis membrane module 15, and the reverse osmosis membrane module 15 The pure water outlet is connected to the three-way valve 30 of the gas-water separation device 20 through a solenoid valve 16, wherein the replenishing water bottle 19 is connected to the replenishing water inte...

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Abstract

The present invention provides a measurement and calibration system and a calibration method for a low-level dissolved oxygen analyzer. The system is a low-level dissolved oxygen water-seal circulation system, which is characterized in that the system comprises a water replenishing device, a gas-water separating device, a micro-aerobic water processing device and a computer control device. The water replenishing device comprises a water replenishing pump, a fiber filter, a granular active carbon filter, an agglutinate active carbon filter and a reverse osmosis membrane component, which is connected with the gas-water separating device. The gas-water separating device comprises a gas-water separator and a tert-water-sealer. The micro-aerobic oxygen water processing device comprises a water tank, a circulating pump, a stabilizer, a deoxidizing filter, an ion exchange resin, a faradic electrolytic cell, a turnover water polo valve, a short circuit tube and a flow meter. The output of the flow meter is connected with the backwater mouth of the gas-water separating device. An oxygen sensor is arranged at the connecting tube output end of the faradic electrolytic cell. The system expands the range of the domestic measurement system for dissolved oxygen and evaluates the uncertainty of the calibration quantity value dissolved oxygen in water at the first time and provides a reliable technical guarantee to the transmitting of the quantity value.

Description

technical field [0001] The invention relates to a calibration device for a trace dissolved oxygen meter, in particular to a trace dissolved oxygen meter verification and calibration system for accurately and reliably monitoring the trace dissolved oxygen value in water and verifying the value measured by the trace dissolved oxygen meter. Background technique [0002] Accurate and reliable monitoring of trace dissolved oxygen in water is of great significance to prevent corrosion of boilers or other power equipment and ensure their safe operation. It is an important guarantee for safe production and a major event for saving energy and benefiting the country and the people. At present, there are two main methods for measuring trace dissolved oxygen at home and abroad, one is visual colorimetry, and the other is trace dissolved oxygen meter determination. The current measurement has basically changed from manual colorimetry to measuring instrument. monitor. Although the trace ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/417
Inventor 修宏宇沈先锋季春峰蔡詠棠
Owner NAT INST OF METROLOGY CHINA
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