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Pore pressure is the pressure of the fluid in the pore space of the rock, and as mentioned above, when it exceeds the hydrostatic pressure, overpressure situation occurs.
Pore pressure gauge, instrument for measuring the condition of a fluid (liquid or gas) that is specified by the force that the fluid would exert, when at rest, on a unit area, such as pounds per square inch or newtons per square centimetre.
Pore water pressures under unsaturated conditions are measured with tensiometers, which operate by allowing the pore water to come into equilibrium with a reference pressure indicator through a permeable ceramic cup placed in contact with the soil.
The Pore Pressure Gauge works on the principle of the piezoresistive effect of monocrystalline silicon. Four equivalent semiconductor resistors are installed in a specific direction of the silicon diaphragm and connected to the Wheatstone bridge.
When the diaphragm of the transducer is affected by external pressure and the Wheatstone bridge is out of balance, the output voltage proportional to the measured pressure was obtained by adding the exciting power supply to the Wheatstone bridge.
The Global Pore Pressure Gauge market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
TOKYO MEASURING INSTRUMENTS KPC-PA/KPD-PA Pore Pressure Gauges – These pressure gauges, which are one size smaller than the KPA-PA and KPB-PA, are used to measure pore water pressure in soil, sheet piles, piles and boreholes.
The KPC-PA is attached to a pile, a diaphragm wall, a sheet pile, etc., and buried in ground to measure pore water pressure.
It is also buried singly in ground to measure pore water pressure. The KPD-PA is put in a borehole to measure the pore water pressure in bedrock.
The feature of these gauges is the dual structure that makes them highly resistant to lateral pressure. Therefore, high-accuracy measurement can be made even if soil pressure changes markedly. Protection ratings : IP 68 equivalent.
Ultracompact Pore Pressure Gauge KPG-PA – Extremely small pore pressure gauge for use in test and research such as model testing .
This is a miniature pore pressure gauge for measurement of pore water pressure in soil. It is designed for use in model testing, and is applicable to measurement for about one week under conditions within the specifications.
Protection ratings : IP68 equivalent
