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Model 615 Drive-Point
and Shielded Drive-Point Piezometer
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The Model 615 Piezometer has a stainless steel, 50 mesh cylindrical filter-screen, within a 3/4” (20 mm) stainless steel drive-point body, screen support and a barbed fitting for attachment of sample tubing. Optional heavy-duty extension couplings are also available to create a strengthened and more rugged piezometer.
The inner barbed fitting allows connection of 5/8” OD x 1/2" ID (16 mm x 12 mm) LDPE or Teflon sample tubing. This prevents sample water from contacting the steel extension rods, and maintains high sample integrity, even when inexpensive carbon steel extensions are used.
Ideal for soil vapor sampling. Where an air-tight connection is most desirable, the compression fitting option allows users to attach 1/4” (6 mm) sample tubing directly to the top of the screened portion of the drive-point.
The 615S shielded drive-point has a single use, 1-1/2” (38 mm) dia. shield to avoid smearing and plugging of the screen during installation. The strengthened connector at the top of the drive-point acts as an annular seal, which avoids contamination from higher levels in the hole.
The 615 N, designed without a tubing barb, is to be used for water level measurements. This saves money and provides better access for Water Level Meters.
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Installing Piezometers with a Manual Slide Hammer
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Couplings Heavy duty couplings are available for the Model 615 Drive-Point Piezometers. The reinforced shoulder gives added support to the pipe threads, to withstand driving stresses and to give more accurate alignment. The maximum OD is 1.5" (38 mm).
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® Teflon is a registered trademark of Dupont Corp.
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