HT HT78, User Manual, Page: 22 / 72

HT78
EN - 2
1. SAFETY PRECAUTIONS AND PROCEDURES
This meter complies with IEC/EN61010-1. For your own safety and in order to avoid
damaging the instrument, you’re recommended to keep to the instructions contained in this
manual and read carefully all the notes preceded by the symbol
.
Take extreme care for the following conditions while measuring:
•
Do not measure voltage or current in humid or wet environment.
•
Do not use the meter in presence of explosive gas (material), combustible gas
(material), steam or dust.
•
Insulate yourself from the object to be tested.
•
Do not touch exposed metal (conductive) parts such as sockets, fixing objects, circuits,
etc.
•
If you detect anomalies of testing end (metal part) and attachment of the meter such as
breakages, deformations, foreign substances, no display, etc., do not take any
measurement.
The followings symbols are used on meter and user’s manual
Caution: refer to the instruction manual. An incorrect use may damage the tester
or its components.
High Voltage ranger: electrical shock risk.
Double insulated instrument.
AC Current
DC Voltage
1.1. PRELIMINARY
•
This apparatus has been designed for use in an environment of pollution degree 2.
Indoor use
•
It measures AC CURRENT on CAT II 600V or CAT III 300V plants. For overvoltage
and categories please see § 1.4
•
You must comply with the usual safety regulations aimed at: protecting you against the
dangerous electric current and protecting the instrument against an incorrect operation
•
Do not test or connect to any circuit whose current exceeds the specified overload
protection
•
Make sure that the batteries are installed correctly