Pneumatic Piezometer

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RST Pneumatic Piezometers monitor pore water pressure in geotechnical applications where stability levels are critical, such as in embankments and slopes.

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Overview

RST Pneumatic Piezometers monitor pore water pressure in geotechnical applications where stability levels are critical, such as in embankments and slopes. They utilize a direct reading pneumatically operated diaphragm, making operation simple while ensuring long term stability and high accuracy at a low cost. Employing the lowest (0.002 cc) displacement available, measurements can be made under essentially zero volume change conditions. Time lag problems are minimized, and accuracy improved.


PNEUMATIC PIEZOMETER SPECIFICATIONS

ITEM SPECIFICATION
Sensitivity 0.1% F.S.
Displacement 0.002 cc
Materials Nylon 12 with EP diaphragm
Accuracy ±0.25% F.S.
Standard Resolution 1 kPa / 0.1 psi or 0.1 kPa / 0.01 psi with C109 readout.
Repeatability ±0.35 kPa / ±0.05 psi
Range 0-2000 kPa / 0-200 psi with standard C109 readout and T-102 tubing
Linear Range 21-2000 kPa / 3-200 psi with standard C109 readout and T-102 tubing

 

P-100 MINIATURE SPECIFICATIONS

ITEM SPECIFICATION
P-100 Miniature The model P-100 is a general-purpose piezometer incorporating a 50 micron stainless steel filter. It is capable of monitoring pore pressure from 0-2000 psi (0-14,000 kPa). The P-100 combines the features of high accuracy and reliability, small size, low cost, and extremely low displacement, with the ability to be constantly monitored.
Dimensions 1.59 cm X 6.30 cm long (.625 in. X 2.48 in. long). Filter area: .974 cm2 / .151 in.2
Applications General-purpose miniature. Multiple installations are possible even in small boreholes.

 

P-100 STANDARD SPECIFICATIONS

ITEM SPECIFICATION
P-100-1 Standard The model P-100-1 consists of a P-100 transducer encapsulated in a slotted PVC, sand-filled, Casa-grande type piezometer body. This body employs a protected 70 micron porous plastic filter, in addition to the 50 micron stainless steel filter in the P-100.
Dimensions 3.35 cm X 22.8 cm long (1.32 in. X 9.0 in. long). Filter area: 133 cm2 / 21 in.2
Applications Recommended general purpose type. Casagrande enclosure for added mechanical protection and increased filtration.

Pneumatic Piezometers are commonly used for:

  • Assessing performance and investigating stability of earth-fill dam embankments.
  • Slope stability investigations.
  • Monitoring water levels in wells and standpipes.
  • Monitoring pressures behind retaining walls and diaphragm walls.
  • Monitoring pressures during fill or excavation.
  • Monitoring pore pressure in land reclamation applications.

Pneumatic Piezometer Ordering Info

ITEM PART #
P100 Pneumatic Piezo with 7.5m tubing PP1025
P100 Pneumatic Piezo with 15m tubing PP1050
P100 Pneumatic Piezo with 25m tubing PP1075
P100 Pneumatic Piezo with 30m tubing PP1100
P100 Pneumatic Piezo with 45m tubing PP1150
P100 Pneumatic Piezo with 60m tubing PP1200
P100-1 Pneumatic Piezo with 7.5m tubing PP2025
P100-1 Pneumatic Piezo with 15m tubing PP2050
P100-1 Pneumatic Piezo with 25m tubing PP2075
P100-1 Pneumatic Piezo with 30m tubing PP2100
P100-1 Pneumatic Piezo with 45m tubing PP2150
P100-1 Pneumatic Piezo with 60m tubing PP2200
C109 Pneumatic Readout PPC109
C109 Filler Hose Replacement PP101000
Pneumatic Tubing (2” x 3/16”) – Spare PP0100
Pneumatic Tubing Splice Kit (2” x 3/16”) PP0170
Male Quick Connect Replacement with Dust Cap PP0150
3/16” Tube Dust Cap PPCAPVT

File Name

Pneumatic Piezometer Installation Manual

Resource Type

Manual
Language Version Download
English PPM0027A

File Name

Pneumatic Piezometers

Resource Type

Brochure
Language Version Download
English PPB0001J
Spanish PPB0006B

Speak with an Expert

I’m very happy with the quality of the instrumentation and technical support from RST, as always. They worked with us from the initial stages of the project to ensure that we were fully prepared and equipped to use the RSTAR network for the first time. They delivered everything within the tight project time frame to ensure that there were no delays on site, and the submersible tilt meters looked like new even after over twelve months of being submerged in Thames water!
 
-Richard Lipscombe, BEng (Hons), Director & Principle Consultant - RL Geotechnical Ltd