HT instruments HT712 - Manual (Page 3)

HT712
EN - 2
1. SAFETY PRECAUTIONS AND PROCEDURES
This instrument complies with EN 61010-1 concerning 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 section “environmental conditions”.
• avoid doing that in presence of explosive gas, combustible gas, steam or excessive
dust.
• do not touch exposed metal (conductive) parts such as test lead ends, sockets, fixing
objects, circuits etc.
• avoid doing that if you notice anomalous conditions such as breakages, deformations,
fractures, foreign substances, blind display etc.
• avoid measuring higher voltages than 20V as you may risk 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 electrical shocks
Double insulated meter
AC voltage
DC voltage
DC/AC voltage
1.1. PRELIMINARY
• This instrument has been designed for use in environments of pollution degree 2.
• It can be used for VOLTAGE measurements on installations of CATIV 600V.
• Only the original test leads supplied along with the instrument guarantee compliance
with the safety standards in force. They must be in a good conditions and, if necessary,
replaced with identical ones.
• Do not test nor connect to any circuit exceeding the specified overload protection.
• Do not take measurements under environmental conditions exceeding the limits
indicated in chapter 6.2.1.
• Make sure that batteries are correctly 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.