Introduction; Safety Instructions And Warnings - UMS T5 User Manual

Introduction

1 Introduction

1.1 Safety instructions and warnings

Electrical installations must comply with the safety and EMC
requirements of the country in which the system is to be used.
Please note that any damages caused by handling errors are out of
our control and therefore are not covered by guarantee.
Tensiometers are instruments for measuring the soil water tension,
soil water pressure and soil temperature and are designed for this
purpose only.
Please pay attention to the following possible causes of risk:
Lightning: Long cables act as antennas and might conduct surge
voltage in case of lightning stroke – this might damage sensors
and instruments.
Frost: Tensiometers are filled with water and therefore are
sensitive to frost! Protect Tensiometers from frost at any time.
Never leave Tensiometers over night inside a cabin or car when
freezing temperatures might occur!
Tensiometers normally are not damaged when the cup is
installed in a frost free soil horizon (in general below 20 cm).
Excess pressure: The maximum non destructive pressure is
300 kPa = 3 bar = 3000 hPa. Higher pressure, which might occur
for example during insertion in wet clayey soils or during refilling
and reassembling, will destroy the pressure sensor!
Electronic installation: Any electrical installations should only be
executed by qualified personnel.
Ceramic cup: Do not touch the cup with your fingers. Grease,
sweat or soap residues will influence the ceramic's hydrophilic
performance.
Do not twist the T5 shaft against the sensor body!
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