This unique, air or hydraulic piston sampler was designed and test proven in the drilling field for many years. The design allows the sampler to be classed as a truly undisturbed piston sampler, producing high production sampling.

How it Works

The GUS Sampler is assembled on a drill rod and lowered to the bottom of a cleaned bore hole. The drill rod may be chucked by means of a chucking rod. A water swivel is attached, with a hose line coupled to the swivel and the pressure pump. As the water or air pressure is applied to the drill rods at approximately 100 to 600 p.s.i., the piston in the head of the assembly forces the thin wall sample tube into the soft underlying soil or clay materials to take the sample.

In Operation

• The hole is drilled by rotary means and prepared by using either casing or drilling mud to support the overburden.
• A water swivel or adaptor is used to direct fluid or air into the drill string, to operate the sampler.
• The drill rods extending the sampler to the bottom of the hole may be clamped to the casing to prevent upward movement from down thrust of fluid or air pressure used, or rods may be connected to the chucking rod in rotary drill head.
• A positive displacement pump or compressed air is used to exert pressure on the stationary piston of the sampler. Pressure range normally required is 100 to 600 p.s.i. for at least one minute.

Stainless steel tubes are now available to meet your environmental sampling requirements

Warning

The thrust developed by the operation of the GUS Sampler may exceed the weight of drill rig. Therefore, caution should be exercised when securing drill rods to casing, drilling equipment, or actuating the sampler above ground. (Maximum operating pressure is 600 p.s.i.)