KC Series Wire Strain Gages
Featuring a longer gage length, the KC series gages are wire strain gages/gauges suitable for mean strain measurement of concrete under test. The material base is a mixture of paper base and phenol-epoxy, with a resistive element made of NiCu alloy wire. Usually, a model with the gage length over 3 times longer than the maximum particle diameter of the aggregate (gravel or sand) is selected for the purpose. It has self-temperature-compensation of 10 to 60ºC and an applicable linear expansion coefficients (×10-6/℃) of 11. It is able to withstand strain limits of approximately 1.8% at normal temperature and a fatigue lives at normal temperature of up to 1.5 x 10^5 (±1500μm/m) times. If no lead-wire cable code is suffixed, the gage is delivered with gage leads only. (Silver-covered copper wires 30 mm long)
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