The Standard Vibrating Wire Piezometer will provide accurate measurement of pore water pressures in fully or partially saturated soil or rock and is the culmination of our 30+ years of expertise in the design and manufacture of Vibrating Wire Instrument Technology.

Built from high quality 316 grade stainless steel the transducer is fitted with either a high or low air entry ceramic filter sleeve or a sintered stainless steel filter disc.

For Push-in installations a coned nose piece is available. Designed for pressure ranges from -5 to 400 metres head of water. It incorporates an over-voltage surge arrestor to offer protection from indirect lightning strike. The W9 can also be fitted with thermistors for temperature monitoring.

Accurate and small with excellent long term stability. Accuracy unaffected by cable length.
Available with thermistors for temperature monitoring.
Fast response to low volume pressure changes.
Manufactured from high grade 316 stainless steel for extended operation.
Hermetically sealed, ensures long working life of the instrument.
Advanced design prevents case stresses from affecting readings.
Connecting cable is strong, screened, flexible and can be used in lengths in excess of 1000m.
Over-voltage surge arrestor fitted to protect against electrical damage.
Suitable for remote reading and data-logging.
Capable of measuring negative pore pressures to –5 metres head of water.
No electronic components ensures long term reliability.

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