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A calibration test was done in order to measure its sensitivity coefficient by an improved soil test device. The experimental result shows that the soil pressure min-sensor made of the monocrystalline silicon(SPM-MS)is proved to be good linear, high precision and less discrete that can fetch precise data in low pressure range even near by 0 point, which guarantees the reliability of the soil pressure test in geotechnical engineering.
A calibration test was done in order to measure its sensitivity coefficient by an improved soil test device. The experimental result shows that the soil pressure min-sensor made of the monocrystalline silicon (SPM-MS) is proved to be good linear, high precision and less discrete that can fetch precise data in low pressure range even near by 0 point, which guarantees the reliability of the soil pressure test in geotechnical engineering.