Quick Installation Guide - UMS T5 User Manual

Introduction

1.7 Quick installation guide

This chapter is only a summary of following chapters. Please read
the complete manual carefully before using the instrument.
T5 are filled and degassed when supplied and are ready for
installation. The procedure is the same for T5 and T5x.
In very soft soils the T5 can be inserted directly without drilling a
hole. As the shaft is fragile, no force should be applied.
For hard soils a special auger kit for is available as an accessory
(art. no. TBT5; included in the T5-set). When the T5 auger is used,
slurrying is unnecessary.
Installation procedure:
1. Drill a hole with the required diameter and depth. Mark the
installation depth on both auger and T5 shaft.
2. Connect the T5 to a readout device, for example a data logger for
continuous measurements or the INFIELD7 handheld device for spot
readings.
During the installation the Tensiometer reading has to be
controlled at any time. Especially in wet, clayey soils a high
pressure might develop while inserting the T5. A pressure of over
3 bar will destroy the pressure transducer. Stop or slow down the
insertion to allow pressure relieve.
3. Carefully remove the water filled rubber cover from the tip and
gently and steadily insert the T5 down to the mark.
Never turn the T5 inside the borehole as this might loosen the
shaft.
Put the protection cup on the plug whenever the plug is not
connected. Dirt will reduce the water tightness of the plug.
Remember to put the protective cap back on the plug after taking
spot readings with the INFIELD7.
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