| 摘要 |
PROBLEM TO BE SOLVED: To resolve the annoyance of returning buttons to zero for a reentry at every change by simultaneously setting a measurement value to zero after turning a power switch on, and pushing an increase button or a decrease button for changing measurement setting. SOLUTION: This operation panel P for an automatic grain measuring unit is fitted to the front face of a grain storage tank 1 and is provided with an on/zero-button and an off-button as a power switch S, confirmation/change, increase and decrease buttons for measurement setting, and increase and decrease buttons related to the number of bags. When a power supply is turned on with the on/zero-button, the measurement set value becomes zero. When the confirmation/change button is depressed to change the measurement set value, the measurement set value is displayed on a monitor. The increase button is depressed to increase the set value, and the decrease button is depressed to decrease the set value. The increase and decrease buttons are likewise depressed to increase or decrease the number of bags. The increase or decrease can be corrected arbitrarily starting from first digit. When the increase and decrease buttons are depressed simultaneously, a zero display is to be made.
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