| 摘要 |
PURPOSE: An automatic weight alarm scale is provided to improve work efficiency by acoustically confirming the weight visually confirmed by a worker. CONSTITUTION: An indicative needle is made up by using a conductor and insulated not to conduct with a scale. The indicative needle is connected to the scale to flow a current of -3V supplied from a power supplier. Then, a sense(3) is attached to a scale plate(2) in a wanted weight position and an object to be measured is put on the scale. When the indicative needle pointing the weight is position in the sense, a buzzer sound is generated from a buzzer due to conduction.
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