Abstract
A sensor apparatus for embedding in construction material, comprises a sensor electrode array comprising at least one pair of electrodes connectable to an electrical signal source for measuring at least one electrical property representative of electrical resistivity or conductivity between the pair of electrodes, and an anode and cathode connectable to form a cell.
Original language | English |
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Patent number | GB2487691 and WO2011048378 |
IPC | G01N 27/04 (2006.01); G01N 33/38 (2006.01); G01N 17/00 (2006.01); G01N 17/02 (2006.01); G01N 17/04 (2006.01) |
Priority date | 21/10/09 |
Publication status | Published - 28 Apr 2011 |