NATM Radial pressure cell designed to measure radial stresses in concrete and shotcrete tunnel linings. The cell consists of two steel plates welded together around the border and filled with de-aired oil. A flexible tube connects the cell to a certificate pressure transducer. A pre-stressing valve complete the cell.
Measuring range: 0-1-5 MPa (10-50 bar)
Resolution: 0.01 MPa
Accuracy: better then 0.3 % of full scale
Dimensions: 150x150x6 mm
Operating temperature: -20°C to +80°C
Equipped with 10 meters of cable.
NATM pressure cell to measure tangential stresses in tunnel lining and in mass concrete. The cell consist of two steel plates welded together around the border and filled with de-aired oil. A flexible tube connects the cell to a certificate pressure transducer. A pre-stressing valve complete the cell.
Measuring range : 0-10-20 MPa (100-200 bar)
Resolution: 0.01 MPa
Accuracy: better then 0.3 % of full scale
Dimensions: 100x200x6 mm
Operating temperature: -20°C to +80°C
Equipped with 10 meters of cable.