Request list

is empty

You are here

Vibrating Wire Pressure Cell

If you cannot find the part number in the documentation please provide detail. Specific to this item, it could include part number or application detail, (ex. 20 meters of cable, or 20 litres of volume)

Vibrating Wire Pressure Cells measure total stresses in soils and is a combination of effective stress and pore-water pressures. They are normally used to validate design assumptions and to give adequate warning of soil pressures in excess of those designed to be exerted by a structure.

The Vibrating Wire Pressure Cell is used to measure total pressure, particularly in earth or rockfill structures.

The cells are normally used to validate design assumptions and to give adequate warning of soil pressures in excess of those which a structure is designed to withstand.

The VW Pressure Cell has two designs; the double face design is formed from a circular flat cell comprising two flexible plates of Stainless Steel welded together around their periphery, providing two active faces, the single face design has one thick metal plate and one flexing plate, providing one active face. The double faced cell measures the pressure from two directions while the single faced cell will only measure the pressure acting on its thinner plate.

Product Features:

• Uses proven Vibrating Wire technology
• Accurate, reliable and robust
• Low, medium and high pressure ranges available
• Low volume change and slender profile
• Single and double active faces available
• Various ranges of size and pressure available
• Suitable for manual or remote monitoring

A narrow gap is formed between the plates and is filled with highly de-aired hydraulic oil, a Vibrating Wire pressure transducer is connected to the cell by a short length of steel tubing forming a closed hydraulic system.

Both cell and transducer are embedded in the medium to be monitored with an armoured cable that connects the instrument to a terminal unit, portable readout unit or datalogger. Any external pressure on the cell causes the steel plates to compress creating a change in pressure in the oil within the cell.

The change in pressure is converted by the VW transducer into an electrical signal and may be remotely read using a VW readout or datalogger. The readout or datalogger can display either frequency based units or, by inputting the instrument calibration factors, engineering based units.

Ordering Information:

Vibrating Wire Earth Pressure Cell – two active faces, 200mm diameter
For use in soil and rock fill. Oil filled, Stainless Steel pressure cell
P6-1.1-SS-3 300kPa pressure range
P6-1.1-SS-5 500kPa pressure range
P6-1.1-SS-10 1000kPa pressure range
P6-1.1-SS-20 2000kPa pressure range
P6-1.1-SS-40 4000kPa pressure range
P6-1.1-SS-60 6000kPa pressure range
P6-1.1-SS-100 10000kPa pressure range
P6-1.1-SS-150 15000kPa pressure range
P6-1.1-SS-3-T 300kPa pressure range with thermistor
P6-1.1-SS-5-T 500kPa pressure range with thermistor
P6-1.1-SS-10-T 1000kPa pressure range with thermistor
P6-1.1-SS-20-T 2000kPa pressure range with thermistor
P6-1.1-SS-40-T 4000kPa pressure range with thermistor
P6-1.1-SS-60-T 6000kPa pressure range with thermistor
P6-1.1-SS-100-T 10000kPa pressure range with thermistor
P6-1.1-SS-150-T 15000kPa pressure range with thermistor

Vibrating Wire Earth Pressure Cell – two active faces, 300mm diameter
For use in soil and rock fill. Oil filled, Stainless Steel pressure cell
P6-1.2-SS-3 300kPa pressure range
P6-1.2-SS-5 500kPa pressure range
P6-1.2-SS-10 1000kPa pressure range
P6-1.2-SS-20 2000kPa pressure range
P6-1.2-SS-40 4000kPa pressure range
P6-1.2-SS-60 6000kPa pressure range
P6-1.2-SS-100 10000kPa pressure range
P6-1.2-SS-150 15000kPa pressure range
P6-1.2-SS-3-T 300kPa pressure range with thermistor
P6-1.2-SS-5-T 500kPa pressure range with thermistor
P6-1.2-SS-10-T 1000kPa pressure range with thermistor
P6-1.2-SS-20-T 2000kPa pressure range with thermistor
P6-1.2-SS-40-T 4000kPa pressure range with thermistor
P6-1.2-SS-60-T 6000kPa pressure range with thermistor
P6-1.2-SS-100-T 10000kPa pressure range with thermistor
P6-1.2-SS-150-T 15000kPa pressure range with thermistor

Vibrating Wire Earth Pressure Cell – single active face, 240mm diameter
For interface between concrete and soil. Oil filled, mild steel pressure cell
P6-2.1-MS-3 300kPa pressure range
P6-2.1-MS-5 500kPa pressure range
P6-2.1-MS-10 1000kPa pressure range
P6-2.1-MS-20 2000kPa pressure range
P6-2.1-MS-40 4000kPa pressure range
P6-2.1-MS-60 6000kPa pressure range
P6-2.1-MS-100 10000kPa pressure range
P6-2.1-MS-150 15000kPa pressure range
P6-2.1-MS-3-T 300kPa pressure range with thermistor
P6-2.1-MS-5-T 500kPa pressure range with thermistor
P6-2.1-MS-10- T 1000kPa pressure range with thermistor
P6-2.1-MS-20-T 2000kPa pressure range with thermistor
P6-2.1-MS-40-T 4000kPa pressure range with thermistor
P6-2.1-MS-60-T 6000kPa pressure range with thermistor
P6-2.1-MS-100-T 10000kPa pressure range with thermistor
P6-2.1-MS-150-T 15000kPa pressure range with thermistor

Vibrating Wire Earth Pressure Cell – single active face, 345mm diameter
For interface between concrete and soil. Oil filled, mild steel pressure cell
P6-2.2-MS-3 300kPa pressure range
P6-2.2-MS-5 500kPa pressure range
P6-2.2-MS-10 1000kPa pressure range
P6-2.2-MS-20 2000kPa pressure range
P6-2.2-MS-40 4000kPa pressure range
P6-2.2-MS-60 6000kPa pressure range
P6-2.2-MS-100 10000kPa pressure range
P6-2.2-MS-150 15000kPa pressure range
P6-2.2-MS-3-T 300kPa pressure range with thermistor
P6-2.2-MS-5-T 500kPa pressure range with thermistor
P6-2.2-MS-10-T 1000kPa pressure range with thermistor
P6-2.2-MS-20-T 2000kPa pressure range with thermistor
P6-2.2-MS-40-T 4000kPa pressure range with thermistor
P6-2.2-MS-60-T 6000kPa pressure range with thermistor
P6-2.2-MS-100-T 10000kPa pressure range with thermistor
P6-2.2-MS-150-T 15000kPa pressure range with thermistor

Connecting Cable and Fittings
CA-1.1-2-A Armoured cable, 2 cores, 1.5mm²; PVC jacket, priced per metre
CA-1.1-4-A Armoured cable, 4 cores, 1.5mm²; PVC jacket, for instruments with thermistors, priced per metre
CA-4.1 Joint sealing kit
CA-4.2 Coloured adhesive tapes; set of 10No.
CA-4.3 Crimping tool
CA-4.4 Crimping sleeves; set of 100No.
W6-6.1 Nylon ties; 150mm x 3.5mm, pack of 100No.
ST1-3.5 Nylon ties; 370mm x 4.7mm, pack of 100No.

Manual
MAN-34 Vibrating Wire Pressure Cell