RICE RESOURCE TECHNOLOGIES

PW Series Vibrating Wire Multi-Level Piezometer

The multi-level vibrating wire piezometer is perfect for measuring pore pressures at various depths beneath a single surface location.

 

DESCRIPTION

The PW-ML multi-level piezometer consists of multiple piezometers connected to a single communication cable, which is in turn connected to the data acquisition system (SENSLOG) or readout (MB-3TL). 

A typical installation of the multi-level piezometer utilizes a direct grouting installation so that only the multi-level piezometer string and a grout injection tube are needed to complete the installation.  Once the grout has hardened, the piezometers are isolated from one another, allowing precise measurements of pore water pressure changes at various depths.

The multi-level piezometer allows the customer to define sensor spacing along the readout cable providing precise depth control based on site specific requirements. Junctions between each piezometer and the main cable are reinforced using epoxy resin for a waterproof and durable seal.

Details

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PW Series Vibrating Wire Multi-Level Piezometer
[PW Series Vibrating Wire Multi-Level Piezometer]
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Product Details

SPECIFICATIONS

Range 

0.2, 0.35, 0.5, 0.75, 1, 1.5, 2, 3, 5 MPa 

 

Accuracy1 

± 0.1%  F.S.

 

Linearity1 

< ± 0.5% F.S. 

 

Resolution with MB-3TL  

0.025% F.S. (min.) 

 

Thermal drift  

± 0.1% F.S. / °C 

 

Thermistor 

3 kΩ (see model TH-T) 

 

Cable 

IRC-241 

 

PIEZOMETER MODEL  

PWS 

 

Length 

200 mm  

 

Outside diameter

19 mm  

 

Housing material  

Stainless steel 

 

Filter 

Stainless steel, ~ 50 μm, ~ 10 kPa, low air entry pressure
 Ceramic, ~ 1 μm, ~ 450 kPa, high air entry pressure  

PART NUMBER 

DESCRIPTION 

PLEASE SPECIFY 

FR-1100G50100 

Sleeve for sensor’s tight connections 

Number of piezometers per chain
 (max. 6 with temperature, 12 without temperature)
 Filter type (stainless steel or ceramic) 

FR-1100DPWS 

PWS piezometer 

Measuring range for each sensor
 Distance from the ground for each sensor

CA-IRC241 

11.7-mm O.D., 12 shielded pairs cable 

Total length of the cable, including enough length to reach readout or logger)

FR-1356050100 

Readout unit 

MB-3TL or SENSLOG 
1 Specifications achieved in laboratory conditions
 
ORDERING INFO

Please specify:

  • Data acquisition system
  • Junction box