Toolkit items, Sentek access tube items – Campbell Scientific Sentek EnviroSCAN Access Tube Installation Guide User Manual

Page 51

Toolkit items

Page 48

Toolkit Items

Sentek access tube items

Part No. 20510

Part No. 21010

Part No. 21510

Part No. 22010

1.0 metre access tube

1.5 metre access tube

2.0 metre access tube

2.5 metre access tube

Sentek precision manufactured access
tubes enable measurement of soil
moisture without direct contact with the
soil. Tubes are manufactured to meet
exact specifications of size of wall
thickness and diameter to ensure
consistency and precision of sensor
readings.

Part No. 80035

Part No. 80040

Red Cutting edge

Yellow Cutting edge

The cutting edge is a knife-sharp, metal
cuff and edge that is attached to the
bottom of the access tube. The cutting
edge is used to cut through the soil as
the access tube is driven into the soil
profile. The edge of the cutter is
designed to cut inward, minimizing soil
compaction on the outside of the cutting
edge. In this way the bulk-density and
soil water storage capacity of the soil to
be measured is left undamaged. Yellow
cutting edges are for normal soils, red
for hard soils.

Part No. 22410

Part No. 22400

Diviner Top Cap
Assembly

EnviroSCAN and
EnviroSMART Top Cap
Assembly

Each Top Cap Assembly consists of a
base and a top. The base is siliconed
onto the access tube protruding from
the soil. The top is screwed onto the
base until the rubber seal is tight
enough to prevent the entry of moisture
or water into the access tube. The base
acts as a datum plate for depth setting
and prevents the change of the
rotational aspect of the sensor within the
access tube. EnviroSCAN and
EnviroSMART Top Cap Assemblies are
fitted with a cable gland through which
the cable is fed and connected to the
probe.

Part No. 22455

Expandable plastic
bung

The Expandable bungs are pushed to
the bottom of the access tube and
tightened so that the access tube is
sealed against the entry of moisture or
water.