| 摘要 |
A calibrating unit for calibrating infusion pumps and the like includes a drop sensor which operates to generate electrical signals in response to the passage of drops through an intravenous set. The calibrating unit operates automatically to count the number of drops sensed by the drop sensor in a measurement interval which can be set to any one of three different durations. At the end of the measurement interval the calibrating unit automatically stops the count. In addition, this calibrating unit includes an optical simulator for driving the drop sensor at a known rate. This optical simulator allows the entire calibrating unit to be checked for accuracy simply and reliably without requiring dripping fluids or the like.
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