Campbell Scientific Sentek EnviroSCAN Access Tube Installation Guide - Manual (Page 21)

Installing EnviroSCAN, EnviroSM ART & Diviner 2000 access tubes
© Sent ek Pt y Lt d Page 18
1 x Nylon dolly 70205
1 x Heavy duty dolly 70210
1 x Toolbag No. 3 70300
Miscellaneous items (installer to supply)
• A
length of rope – to tie branches or vines temporarily out of the way so that they do not get
damaged or interfere with the augering process
• A set of duck boards – to prevent soil compaction around the access tube during the
installation process
• 1
x sledge hammer – to drive the access tubes into the soil. A 3-4 kg (8-10 lb) hammer is
recommended.
• 1
x measuring tape – to measure the required depth
• 1
x marking pen
• 1
x 10 litre (2 gallon) bucket – to collect the augered soil and remove it from the site
• 1
x flashlight (torch) – to inspect the inside walls of the access tubes after the cleaning
process
• 1
x notepad and pencil – to record the depth and texture variation throughout the soil profile
and any other site information
• Methylated spirits – to moisten the cloth used with the access tube rag cleaning tool to
remove possible water and mud from the walls of the access tube, if required.
• Cotton cleaning cloths – to clean the inside of the access tubes and other tools after
installation.
• Silicon glue – to seal the base of the top cap to the top of the access tube.
Installation procedure
Step 1 – Preparing the site
In all installations, disturbance to the surrounding crops and soil profiles must be minimized because soil
compaction alters the capacity of the soil to absorb water.
1. Use duckboards at the site
2. Use ropes to tie crops out of the way if necessary
Step 2 – Assembling the tripod
The tripod keeps the auger in a stationary central position and prevents disturbance to the surrounding soil
through ‘wear out’ or hole enlargement. It also stabilises the access tube during the installation process by
stopping the access tube from flexing at the point where the access tube enters the soil each time it absorbs
a hammer blow. This prevents air gaps from forming along the side of the access tube.
Warning:
This tripod must be used to ensure a sound installation using the standard
‘through the access tube drilling method.’ Any air gaps between the access tube
and the soil will give false readings.