Method and device for the calibration of flowmeters for gases
The constant gas flow of a supercritical nozzle into a vacuum is used for the calibration of flowmeters for gases. The vacuum is generated in a vessel by means of a pump, the capacity of which is not sufficient for maintaining a continuous supercritical flow. Only after sufficient vacuum is reached...
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| Format: | Patent |
| Sprache: | eng ; ger |
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| Zusammenfassung: | The constant gas flow of a supercritical nozzle into a vacuum is used for the calibration of flowmeters for gases. The vacuum is generated in a vessel by means of a pump, the capacity of which is not sufficient for maintaining a continuous supercritical flow. Only after sufficient vacuum is reached in the vessel is a supercritical flow generated by connecting the nozzle for a limited time. |
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