Continouous Samplers
For shallow sampling the simplest and lowest total cost system is the standard continuous sampling system. Drill rod is used to connect to the split tube sampler. There is a modified drive cap with adjustment holes for positioning of the sampling tube required with various soil conditions or sampling specifications. The position of the sampling shoe can be changed from 1" inside the auger to approximately 4" ahead of the auger bit.
A bearing system is required below the rod to cap adapter to prevent the sampler from rotating and disturbing the soil sample. This system is usually used with a five foot split tube sampler. When the tube is full, it is removed and a spare five foot tube is inserted in the hole to continue the sampling operation.
In addition to the normal drill string the following are required for this system:
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Component |
3 ¼" System |
3 ¾"System |
4 ¼" System |
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Extended Drive Cap |
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Rod to Cap Adapter (included in your drive string) |
See Auger Section |
See Auger Section |
See Auger Section |
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Bearing Assembly |
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Nut and Bolt for Rod to Cap Adapter |
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Saver Sub/any combo of auger pipe Tool Joints |
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Sampling Tube, ¼" wall 5’ long with Head and Shoe |
3" O.D. |
3" O.D. |
4" O.D. |
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Spare Sampling Tube with Barrel and Shoe only |
3" O.D. |
3" O.D. |
4" O.D. |
The 5’ split spoon assembly is available in 3" OD for the 3 1/4" and 3 ¾" augers and 4" OD for larger augers. With a 6 1/4" ID auger and above, a shroud is used around the drive shoe to insure the sampler is centered. The top box connection of the sampler is the same as your drill string pin-down connection.