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Heavy Duty Vibrating Wire Piezometer

The Heavy Duty Vibrating Wire Piezometer is designed for the accurate measurement of pore water pressures in fully or partially saturated soil and rock. The Piezometer tip comprises a porous filter element integral with a diaphragm type Vibrating Wire pressure transducer. A cable connects the transducer to a read out, terminal unit or data logger. The readout displays either frequency based units, or by inputting the instrument calibration factor, engineering units.

Operation

The Heavy Duty Vibrating Wire Piezometer is designed for the accurate measurement of pore water pressures in fully or partially saturated soil and rock.

The Piezometer tip comprises a porous filter element integral with a diaphragm type Vibrating Wire pressure transducer. A cable connects the transducer to a read out, terminal unit or data logger.

The readout displays either frequency based units, or by inputting  the instrument calibration factor, engineering units.

Applications

Piezometers are used in geotechnical, environmental, and hydrological applications. They can be installed in boreholes, placed in fill materials or in open wells to measure water levels or porewater pressures to enable engineers to verify design assumptions and control placement of fill. With a nose cone fitted the piezometer can also be pushed into soft ground with a CPT rig.

Typical applications include:
•Environmental management including landfill sites
•Monitoring of aquifers
•Monitoring of tidal effects on coastal soils
•Dams
•Embankments
•Potential landslide sites
•Dewatering excavations
•Tailings lagoons
•Pumping tests
•Monitoring seepage
•Control placement of fill.

Ordering information
Low Air Entry Stainless Steel Sintered Filter Vibrating Wire Piezometer

Low resistance to air entry (LAE), Stainless Steel sintered filter (50 microns)
W4-15-S 150kPa pressure range
W4-30-S 300kPa pressure range
W4-50-S 500kPa pressure range
W4-70-S 700kPa pressure range
W4-100-S 1000kPa pressure range
W4-150-S 1500kPa pressure range
W4-200-S 2000kPa pressure range
W4-300-S 3000kPa pressure range
W4-400-S 4000kPa pressure range
W4-600-S 6000kPa pressure range
W4-1000-S 10000kPa pressure range
W4-1500-S 15000kPa pressure range
W4-15-S-T 150kPa pressure range with thermistor
W4-30-S-T 300kPa pressure range with thermistor
W4-50-S-T 500kPa pressure range with thermistor
W4-70-S-T 700kPa pressure range with thermistor
W4-100-S-T 1000kPa pressure range with thermistor
W4-150-S-T 1500kPa pressure range with thermistor
W4-200-S-T 2000kPa pressure range with thermistor
W4-300-S-T 3000kPa pressure range with thermistor
W4-400-S-T 4000kPa pressure range with thermistor
W4-600-S-T 6000kPa pressure range with thermistor
W4-1000-S-T 10000kPa pressure range with thermistor
W4-1500-S-T 15000kPa pressure range with thermistor

High Air Entry Ceramic Filter Vibrating Wire Piezometer
High resistance to air entry (HAE) ceramic filter (1micron)
W4-15-H 150kPa pressure range
W4-30-H 300kPa pressure range
W4-50-H 500kPa pressure range
W4-70-H 700kPa pressure range
W4-100-H 1000kPa pressure range
W4-150-H 1500kPa pressure range
W4-200-H 2000kPa pressure range
W4-300-H 3000kPa pressure range
W4-400-H 4000kPa pressure range
W4-600-H 6000kPa pressure range
W4-1000-H 10000kPa pressure range
W4-1500-H 15000kPa pressure range
W4-15-H-T 150kPa pressure range with thermistor
W4-30-H-T 300kPa pressure range with thermistor
W4-50-H-T 500kPa pressure range with thermistor
W4-70-H-T 700kPa pressure range with thermistor
W4-100-H-T 1000kPa pressure range with thermistor
W4-150-H-T 1500kPa pressure range with thermistor
W4-200-H-T 2000kPa pressure range with thermistor
W4-300-H-T 3000kPa pressure range with thermistor
W4-400-H-T 4000kPa pressure range with thermistor
W4-600-H-T 6000kPa pressure range with thermistor
W4-1000-H-T 10000kPa pressure range with thermistor
W4-1500-H-T 15000kPa pressure range with thermistor


Connecting Cables and Fittings
CA-1.1-2-A Armoured cable, 2 core, price per metre, 1.5mm², PVC jacket
CA-1.1-4-A Armoured cable, 4 core, price per metre, 1.5mm², PVC jacket (for instruments with thermistors)
Spare Filters
W4-1.2 Replacement ceramic HAE fliter, high resistance to air entry (1micron)
W4-1.3 Replacement sintered steel LAE filter, low resistance to air entry (50micron)


Installation Accessories
W4-1.4 Push-in Stainless Steel nose cone, for use with 15mm ceramic and Stainless Steel filters, 38mm outer diameter
W6-8.1 Punner, to compact material in borehole. For use with W6-8.2 or W1-2.7
W1-2.7 Galvanised standpipe tubing, mild steel galvanised, includes coupling, 1metre length, ¾inch nominal bore, ¾inch BSP thread
W6-8.2 Galvanised standpipe tubing, mild steel galvanised, includes coupling, 3metre length, ¾inch nominal bore, ¾inch BSP thread
W4-1.6 Push in adaptor, threaded to fit ¾inch BSP tube
W3-4.3 Placing adaptor, threaded to fit ¾inch BSP tube
W2-4.11
Standard Tool Kit, includes: knife, 3metre measuring tape, 8inch adjustable spanner, 2 No flat screw drivers, combination pliers, ball hammer,
6No English spanners 5/16 to 1inch