| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic weighing instrument with a flow rate calculation function, such as an electronic scale, which eliminates errors occurring during flow rate calculation to be able to accurately obtain an exact flow rate measurement result.SOLUTION: The electronic weighing instrument with a flow rate calculation function comprises: a load sensor unit 1 provided with a weighing dish 1a; a clock generation circuit 4 which generates a reference time signal: an A/D conversion unit 2 which converts an analog load signal outputted from the load sensor unit 1 into digital load data each time when receiving the reference time signal; an arithmetic processing unit 3 which, each time when receiving the reference time signal, converts the load data outputted from the A/D conversion unit 2 into a measured value by correction operation and calculates a variation per unit time of the measured value to obtain a flow rate; a display unit 6 which displays data such as the measured value and the flow rate value outputted from the arithmetic processing unit 3; a memory 5 for storing therein various data; and an input/output unit which comprises a key switch part 7 and an interface part 8 and inputs/outputs various data. |
