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Quality Control of Keyboard Harmonia (Push-in Force Test)
- Force Measurement IMADA
- SOLUTIONS
- Musical Instruments
- Quality Control of Keyboard Harmonia (Push-in Force Test)
Description FAVORITES
Operating Force
The keyboard harmonica is a classic instrument used in music classes and school performances in kindergartens and elementary schools in Japan. Children in kindergarten and the lower grades of elementary school often have weak finger strength, and some may not be able to produce sound even when pressing the keys of a piano. Therefore, compared to the piano, the keyboard harmonica requires less force to press the keys and produces sound with a lighter touch. This ease of pressing the keys is an important point.
What is being introduced here is a test that measures the maximum load required to press the keys and manages the operational quality (ease of pressing) of the keyboard. In the video, a key displacement of 5mm is set, and the load values required to depress three keys by 5mm each are measured. The maximum load values for each key are then statistically analyzed and graphed to determine if they fall within the specified criteria. The graph is drawn at a speed of 2000 data points per second, allowing for accurate measurement of momentary changes in load and obtaining the maximum load values precisely. The measuring device used in the video detects the point of contact with the key and can automatically perform the entire measurement process, from pushing the key 5mm to returning to the starting position. This ensures the reproducibility of the test and allows for highly efficient measurements.
inquiry number
3A2033A
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Related sample
- Keyboard Harmonia
- Piano
Measurement Example Videos
Cautions
This video shows the testing image of objective sample. Some samples may not be suitable to measure with this configuration depending on their materials or shapes.
The example of product configuration is for your reference only. It varies depending on sample, measurement method and testing capacity.
The products used in this video may differ from the example of product configuration.
Please select the right product model for the product configuration. Refer to the specification of each product for the compatibility.
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Measurements in Special Environment
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L-shaped Sample Fixture
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Compression Test Attachment for Squeeze Tube
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Individually Adjustable Torque Chuck Attachment
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Resize & Modification
Press Test Fixture (Wide Size)
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Cutting Base Plate with groove and knife edge probe
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Peel Fixture for Packaged Cooked Rice Lid
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Standards-Compliant Measurement
ISO 14704: 2000 Fine Ceramics 4-Point Bend Tester
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ISO 17480: 2015 Peel Tester for Gable-Top Package
ASTM D1894: 2014 Coefficient of Friction (COF) Tester
Attachments for score bend test
ISO 17480: 2015 45 Degree Complete Peel Test Fixture for Container Lid
IEC 61010-1 (2010) Spherical Jig for Compression Testing
