HT instruments HT327 - Manual (Page 3)

HT327
EN - 2
1. SAFETY PRECAUTIONS AND PROCEDURES
This meter is in compliance with safety IEC/EN61010-1 guideline related to electronic
measuring instruments. For your own safety and to avoid damaging the instrument follow
the procedures described in this instruction manual and read carefully all notes preceded
by this symbol
.When taking measurements:
 Avoid doing that in humid or wet places - make sure that humidity is within the limits
indicated in § 6.2.1.
 Avoid doing that in rooms where explosive gas, combustible gas, steam or excessive
dust is present.
 Keep you insulated from the object under test.
 Do not touch exposed metal parts such as test lead ends, sockets, fixing objects,
circuits etc.
 Avoid doing that if you notice anomalous conditions such as breakages, deformations,
fractures, leakages of battery liquid, blind display etc.
 Be particularly careful when measuring voltages exceeding 20V to avoid risk of
electrical shocks.
The following symbols are used:
CAUTION - refer to the instruction manual - an improper use may damage the
instrument or its components.
Danger high voltage: risk of electric shocks.
Double insulated meter.
AC voltage or current.
DC voltage or current.
1.1. PRELIMINARY
 This instrument has been designed for use in environments of pollution degree 2.
 It can be used for VOLTAGE and CURRENT measurements on installations of
overvoltage CAT III 1000V and CAT IV 600V.
 When using the instrument always respect the usual safety regulations aimed at
protecting you against the dangerous electric currents and protecting the instrument
against incorrect operations.
 Only the leads supplied with the instrument guarantee compliance with the safety
standards in force. They must be in good conditions and, if necessary, replaced with
identical ones.
 Do not test or connect to any circuit exceeding the specified overload protection.
 Do not effect measurements under environmental conditions exceeding the limits
indicated in § 6.1.1 and § 6.2.1.
 Make sure that batteries are properly installed.
 Before connecting the test probes to the installation make sure that the rotary selector
is positioned on the right function.
 Make sure that LCD and rotary selector indicate the same function