Actual flow circle calibrating apparatus for gas flowmeter and calibrating method thereof

A technology of gas flowmeter and verification device, which is applied in measurement device, liquid/fluid solid measurement, testing/calibration device, etc., can solve the problems of poor accuracy, high cost, high energy consumption, etc. Large and small effect

Inactive Publication Date: 2009-02-04
MEMSIC SEMICON WUXI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Another object of the present invention is to provide a gas flow meter with small volume, low cost, low energy consumption and good accuracy to solve the prob...

Method used

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  • Actual flow circle calibrating apparatus for gas flowmeter and calibrating method thereof
  • Actual flow circle calibrating apparatus for gas flowmeter and calibrating method thereof

Examples

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Embodiment 1

[0027] in such as figure 1 In the embodiment 1 shown in Fig. 2, the gas flow meter real-flow cycle verification device includes a gas supply device, an air extraction device, a closed pipeline loop 1, and a fan 3, a temperature control device 5, and a test system 6 arranged in the pipeline loop 1. And the standard instrument system 7, the gas cylinder of the air supply device and the vacuum pump of the air extraction device (not shown in the figure) are respectively connected to the pipeline loop through an angle valve, and the angle valve is arranged on the pipeline loop at both ends of the standard instrument system 7, and on the pipeline loop 1 A large-capacity pressure equalizing container seal tank 2 is provided, and a vacuum gauge, a pressure gauge, and an air release valve are respectively provided on the pipeline circuit 1 and the seal tank 2, and the volume of the seal tank 2 is 60% of the total volume of the pipeline circuit. The volume of the sealed tank is 1.2 cubi...

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PUM

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Abstract

The invention discloses a gas flow meter actual flow cycling detecting device and a detecting method thereof. A pipeline loop of the actual flow cycling detecting device is provided with a plurality of uniform voltage container sealing pots; a blower is arranged in the sealing pot; the air inlet of the blower penetrates out of the sealing pot to be connected with the upstream side of the pipeline loop; the air outlet of the blower is arranged in the sealing pot and the outlet of the sealing pot is connected with the downstream side of the pipeline loop; the sealing pot, a temperature controlling device, a testing system and a standard meter system are arranged in series. The invention effectively resolves the problem that the detecting condition is not consistent with the working condition to lead measurement error existing in the prior gas flow meter, breaks through the prior method which depends on a pipeline gas source or adopts compressor, has the advantages of small volume, low dissipation energy, high accuracy, and also has the characteristics of small investment, low noise, exchangeable gas and easy operation, is applicable to the testing of fuel gas and most industry gas and can be promoted and used in large range.

Description

technical field [0001] The invention relates to the field of gas flow measurement, in particular to a gas flowmeter real-flow cycle verification device and a verification method thereof. Background technique [0002] Strictly speaking, the off-line verification results of the flow meter can only explain its measurement characteristics under the verification conditions. Flow measurements introduce additional errors. Only online real-flow verification can realize the real flow meter calibration or assignment, because only the calibration or assignment at this time can really take into account the influence of various factors on the performance of the flow meter, and can ensure the continuity and closure of the value transfer chain or traceability chain . The basic feature of online real-flow verification is that the installation and use conditions of the flow meter during the verification and actual use are consistent. At present, most of the verification equipment used by ...

Claims

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Application Information

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IPC IPC(8): G01F25/00
Inventor 韩怀成钭伟明
Owner MEMSIC SEMICON WUXI
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