Descriptions

Installation is carried out by using CPT or conventional drill rods onto which is fitted a special adaptor that fits onto the top of the piezometer allowing it to be pushed to depth and the rods retrieved. Adaptors are available to suit most sizes and thread types of rods used for Cone Penetrometer Testing including R32 and reverse threads.
 
Alternatively 1” BSP galvanised pipe connected directly onto the top of a piezometer with a 1” BSP thread can be used and is sometimes used as a sacrificial pipe left within the borehole.