| 摘要 |
PURPOSE:To measure an accurate weighed value without receiving the effect of zero-drift, by correcting the error of the weighed value on the basis of the estimated change quantity of a zero point at the point of time when the weighed value is obtained. CONSTITUTION:Digital conversion data is sent to a control part 2 at every minute time from a load detection part 1 detecting the load on a tray 1a. In RAM23 of the control part 2, zero point data W1 before measurement, the weighed value data W2 of an article to be measured, zero point data W3 after measurement, the time data t1 between the sampling points of time of the data W1, W2 and the time data t2 between the sampling points of time of the data W2, W3 are stored and displayed on a display device 25. If a correction order key 4 is pushed when the data W3 is displayed, the correction operation program of ROM22 is started and operation is carried out using the contents of first-fifth registers and a weighed value corrected in the drift of the zero point of W2 and near to a true value is displayed on the display device 25.
|
