On the newly Designed Wire Resistance Strain Meter and its Application for the Ships
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概要
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This report described the wire resistance strain meter which were designed by The Transportation Thechnical Reserch Institut, Ministry of Transportation and the measurement of stresses in The heavy derrick post.Accuracy of Reading; Observations can be made to an accuracy of 3×10-4mm which on a 30mm gauge length and corresponds a stress of 0.2kg sq. mm for mild steel.Time of Reading; It is possible to read one gauge in 10 seconds.Indicator: A 90-110 volt, 50-60 cycles, A.C. power Supply unit is avaiable for this instrument The proportional voltages due to the changes in the resistance produced by the Strains to the gauge fed into the two-stage amplifier operating two "magic eves".
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