| 摘要 |
A method indicates whether a dispensable product will require refilling prior to the next scheduled service interval. The method includes tracking the amount of use over a first interval, calculating a frequency based from the use over the first interval; comparing the quantity remaining with the required amount, which is the product of the number of weeks in the service interval and the calculated frequency. Based on the usage, when the quantity remaining is less than the required amount, a warning will be provided to indicate that the dispensing product should be replaced, as it will be empty before the next service interval. A dispenser (10) incorporating such method is also described. |
