Ideal Conditions For Installation; Documentation; Selecting The Installation Angle - Delta-T Devices SWT5 User Manual

3.1.4 Ideal conditions for installation

For the installation of Tensiometers, the ideal conditions are:

Frost-free soil.

Wet coarse clay or loess.

Low gravel content.

3.1.5 Documentation

For every measuring spot you should:

Measure out the position where the pressure sensor will be placed.
(A must for installations below the ground surface).

Take documenting photos before, during and after installation.

Save a soil sample.

Write down installation depth and angle with each sensor
identification (serial number).

Mark all connecting cables with the corresponding sensor
identification, serial number or logger channel on each end.
Clip-on numbered rings, available as an accessory.
3.1.6

Selecting the installation angle

An installation position would be ideal if the typical water flow is not
disturbed by the Tensiometer. No preferential water flow along the
shaft should be created.
If the ceramic cup is positioned higher than the sensor body the first
bubble that appears inside the shaft will block the water exchange and
stop the Tensiometer working.
16  Installation
SWT5 User Manual v2