These transducers (outer diameter 200 mm) are used in the most standard measurement sites. BEE-A is used to measure underground soil pressure and is embedded in the core zone of a rockfill dam or standard berm. It can also measure 3-sided or 4-sided soil pressure. Rated capacity: 200 kPa to 2 MPa Pressure sensing surface diameter: 160 mm Nonlinearity: Within ±1% RO (200KP: Within ±3% RO)