| 摘要 |
PURPOSE:To perform highly accurate measurement at a high speed, by amplifying noise voltages, which are caused by floor vibration and detected by a vibration detecting body that is provided in the vicinity of a load cell, making the phase of the voltages negative, and adding the voltages to the output signal from the load cell. CONSTITUTION:A weight detecting part is provided at a part of the surrounding part of a strain yielding body 40b of a load cell 4. One side of the strain yielding body 40b is fixed to a supporting post 3. A measuring hopper 1d is attached to the other side. When a material to be measured is inputted into the measuring hopper 1d, the load cell 4 outputs an analog voltage proportional to the weight. Floor vibration is detected by a vibration detecting body 5, which is provided in the vicinity of the load cell 4 and amplified by an amplifier 5b. The level is aligned with the level of the noise voltages caused by the vibration of the floor detected by the load cell 4. The output signal from the load cell 4 is inputted to a positive input terminal of an adder 6. The output from the vibration detecting body 5 is inputted to a negative input terminal. Then, addition is performed. |
