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Access Tubas <br /> Tamped Sol <br /> ea�aa <br /> Mg <br /> T ' <br /> Depen Spud BadM <br /> As Required <br /> tae Mesh Sao. <br /> Flour Slurry <br /> Ber�fts <br /> Plug <br /> Figure 9. <br /> Protecting the Access Tubes After installation, the access tubes from the Sampler are termi- <br /> nated with a 6-inch length of neoprene tubing(MRT003)above the <br /> Sampler installation.Or,if conditions require,place the neoprene- <br /> terminated access tubes in a trench, terminating above the soil <br /> surface at a remote location.We recommend that the access tubes <br /> be protected inside a conduit tube running from the top of the Sam- <br /> pler to the termination at the surface.At the surface level, take <br /> care that the access tubes are safe from damage by mechanical <br /> equipment or animals.Do not cover the surface area directly above <br /> the Sampler in any manner that would interfere with the normal <br /> percolation of soil water down to the depth of the Sampler,other- <br /> wise the obstruction could have an adverse affect on your soil wa- <br /> ter sample. <br /> Collecting A Sample in the To collect a sample, the discharge access tube is closed using a <br /> Sampler clamping ring,and the vacuum port of the hand pump is connected <br /> to the Pressure-Vacuum access tube. The pump is then used to <br /> create a vacuum of about 60 cb inside the Sampler,which is indi- <br /> cated on the gauge connected to the pump (see Fig. 10). <br /> Figure 10. :#T•'I`��e.airt: -•e~y,.. ��.IS"��:<.s�i <br /> a: <br /> SOILMOISTURE EOUIPMENT CORP. 13 \® <br /> P.O.Box 30025,Santa Barbara, Colifomia 93105 USA / \ <br /> Phone:(805)969-3525•Fax:(805)683-2189 SOILMOISTIM <br /> e-mail:soles®soilmoisture.com •Web:http://www.sollmoisture.com <br />