DefinitionA <PNEUMATIC PIEZOMETER READOUT> is a <MEASURING INSTRUMENT> and a <PORTABLE INSTRUMENT> that is intended for activating, by purging a dry GAS>, and reading the response from, a PNEUMATIC PIEZOMETER>
A pneumatic indicator is normally a hand-held or portable instrument that consist of a precision flow meter, pressure regulator, pressure gauges and a built-in tank charged with N2 gas.