Flow sensor zero-point correction
A fluid flowmeter for measuring rates of flow higher than a preset rate by means of a fluidic element (1) and lower than a preset rate by means of a flow sensor (6), a method for zero point correction of the flow sensor wherein the maximum value of the permissible shift is set as a threshold value T...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A fluid flowmeter for measuring rates of flow higher than a preset rate by means of a fluidic element (1) and lower than a preset rate by means of a flow sensor (6), a method for zero point correction of the flow sensor wherein the maximum value of the permissible shift is set as a threshold value TH and the number of output pulses Po is assumed to be the zero point of the flow sensor for establishing the shift only when the actual value of flow sensor output P is less than the said threshold value and wherein if the number of output pulses is greater than the threshold value, the shift value is not updated assuming that there has been a flow, and the flow rate is corrected by use of the value available at that time. |
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