earth pressure cells

Earth pressure cells from Kingmach are built around a simple principle: a flat, stiff diaphragm that deforms under soil load, converting stress into a measurable signal. The way that signal is read varies by model. Hydraulic cells transmit pressure through a fluid-filled line to a remote gauge, ideal for installation in boreholes or under embankments where electrical components could be trouble. Vibrating wire cells output a frequency, making them immune to long cable runs and electrical noise — a real advantage on sites with heavy machinery. Pneumatic cells use gas pressure to balance the diaphragm, giving a direct reading without electronics. All housings are stainless steel, with standard thicknesses often around 12 to 25 mm depending on the expected load. Custom ranges go from 100 kPa up to 20 MPa, and the active sensing area typically spans 100 to 300 mm in diameter. For interface pressure measurement, we can supply cells with anchor plates or attach them to curved surfaces. Kingmach also handles the small but important details: pigtails with robust connectors, desiccant chambers for long-term installations, and documentation that includes individual calibration certificates. Since no site is exactly like the next, we regularly modify stock designs — changing the flange width or cable exit direction — without treating it as a special project. Technical support during installation is part of the service, and we stock spares for common parts to keep downtime short.