User Manual

English
Definition of
Installation
Categories
(see IEC 664-1)
CAT I: Circuits in which measures
are taken to limit transient
overvoltages to an appropriately low
voltage. E.g. protected electronic
circuits.
CAT II: Power supply circuits for
domestic appliances and the like
which may be subject to medium-
level transient overvoltages.
E.g. household appliances and
portable tools.
CAT III: Power supply circuits for
power appliances which may be
subject to high-level transient
overvoltages.
E.g. industrial machines or devices.
CAT IV: Circuits which may be
subject to very high-level transient
overvoltages.
E.g. power feeders
Symbols
Directive 2002/96/EC (WEEE)
Cleaning
Unplug the leads from external circuits
and turn the instrument off. Clean the
instrument with a damp cloth and soap.
Never use abrasive products or
solvents.
Make sure the instrument is quite dry
before reusing it.