Changes for page Field Deployment Guides

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Details

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	1	+XWiki.robert

Content

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26	26	== Importance of locking sensor feet ==
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28		-The Trillium Compact 120s and 20s sensors have three adjustable feet for leveling. It is **critical** to "lock" these feet in place by spinning the locking disk upwards towards the sensor, as tight as possible. This reduces "wobble" which shows up in both low and high frequency signal. It is also a good idea to keep the length of the three feet as small as possible.
	28	+The Trillium Compact 120s and 20s sensors have three adjustable feet for leveling. It is **critical** to "lock" these feet in place by spinning the locking disk upwards towards the sensor, as tight as possible. This reduces "wobble" which shows up in both low and high frequency signal. It is also a good idea to keep the length of the three feet as small as possible to maximize stability.
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30	30	[[image:TC20_feetlocked_vs_unlocked.png||alt="Figured showing how unlocked feet can amplify fake noise and rattle" data-xwiki-image-style-alignment="center"]]
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68		-DO NOT: bury the sensors with anything other than a PVC housing or direct burial. Other methods may damage the equipment more than protect it.
	68	+DO NOT: bury the sensors with anything other than a PVC housing or direct burial. Other methods (especially using a plastic bag!!) may damage the equipment more than protect it.
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71	71	= Step-by-step field installation guide (with images) =
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128	128	= Experimental Sand Burial: =
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130		-Direct burials are used for Trillium Compact Postholes as they are specifically designed to be corrosion resistant. Other sensors such as the Trillum Compact 120, Trillum Compact 20, and 3D Lites are not built with this degree of corrosion resistance. Currently, the best prevention for moisture trapping and corrosion is burying them with a PVC covering. However, in particularly wet environments, some moisture can still collect within these coverings. One experimental method that is being trialled in hopes of providing better drainage is the sand burial. Steps 1, 2, and 3 remain the same, though once the sensor is set with the correct levelling and orientation, the subsequent infill steps differ. Once the open PVC tube is placed around the sensor, infill the hole around the tubing, holding it in place (image A). Once the hole is back-filled level with the tubing, securing it in place, begin filling the interior of the PVC tube with sand. Hold the sensor in place and ensure the sand is packed tightly around it (image B). Once the sand fills the PVC tube, gently remove the PVC tube while holding the sensor in place (pliers may be required to grip the tube). The last deviation for a sand burial from the standard burial is continuing to place some sand above the sensor, and dirt (or other local substrate around that sand pocket) until level with the surface (image C).
	130	+Direct burials are used for Trillium Compact Postholes as they are specifically designed to be corrosion resistant. Other sensors such as the Trillium Compact 120, Trillium Compact 20, and 3D Lites are not built with this degree of corrosion resistance. Currently, the best prevention for moisture trapping and corrosion is burying them with a PVC covering. However, in particularly wet environments, some moisture can still collect within these coverings. One experimental method that is being trialled in hopes of providing better drainage is the sand burial. Steps 1, 2, and 3 remain the same, though once the sensor is set with the correct leveling and orientation, the subsequent infill steps differ. Once the open PVC tube is placed around the sensor, infill the hole around the tubing, holding it in place (image A). Once the hole is back-filled level with the tubing, securing it in place, begin filling the interior of the PVC tube with sand. Hold the sensor in place and ensure the sand is packed tightly around it (image B). Once the sand fills the PVC tube, gently remove the PVC tube while holding the sensor in place (pliers may be required to grip the tube). The last deviation for a sand burial from the standard burial is continuing to place some sand above the sensor, and dirt (or other local substrate around that sand pocket) until level with the surface (image C).
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