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| Structure and Metrological Characteristics of Fluidic Household Gas Meters |
| ZHAN Zhi-jie,WANG Han-tao,SHEN Wen-xin |
| Zhejiang Institute of Metrology, Hangzhoug, Zhejiang 310018, China |
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Abstract A new type of household gas meter known as a fluidic meter is introduced. The meter utilizes an array of specially designed disks of different thicknesses and shapes to create a bistable flow passage where self-induced, sustained oscillations occur, converting the task of flow-rate measurement to the electronic monitoring of oscillation frequency. The meter meets the measurement standards for the range of flow rate from 0.04 to 1.6 m3/h. Compared with the traditional diaphragm gas meter, this meter features no moving parts, good repeatability, and electronic signal output. The analysis of experimental data shows that the fluidic-type gas meter can satisfy the class 1.5 accuracy requirements. There also appears to be a potential to extend the measurable flow-rate range through further design optimization.
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2014, Vol. 35 
