| 摘要 |
PURPOSE:To provide high operability by holding a scaled value atuomatically during a prearranged period of time even after removal of an object to be scaled. CONSTITUTION:An analog digital converter (hereafter called ADC) 4 receives an output voltage from a load cell 2 which changes according to a load value, through the intermediary of an amplifier 3 and digitally converts the said output voltage. Then the digital value D of an output from ADC4 is subjected to weighted processing and tare compensation by an arithmetic circuit 5 and then an output is made to a data input in an indication register 6. An output from ADC4 is monitored by an indication fixing device 7 and an indication fixing instruction signal C to such effect that an indication should be fixed in an indication register 6, is output. The indication register 6 reads an output from the arithmetic circuit 5 which was supplied to a data input at a prearranged interval until an indication fixing instruction signal C to such effect that an indication should be fixed is output from the indication fixing device 7. Then the said register memorizes latest scaling data does not update an indication for a prearranged period, if an indication fixing instruction signal C to such effect that an indication should be fixed was output. Under this constitution, the memorized contents of the indication registor 6 are indicated on a weight indication device 8 as a weight value. |
