Precautions and safety measures – HT instruments HT9 User Manual
Page 3
HT6-HT8-HT9
EN - 2
1. PRECAUTIONS AND SAFETY MEASURES
The instrument has been designed in compliance with directive IEC/EN61010-1 relevant to
electronic measuring instruments. For your safety and in order to prevent damaging the
instrument, please carefully follow the procedures described in this manual and read all
notes preceded by the symbol
with the utmost attention.
Before and after carrying out the measurements, carefully observe the following
instructions:
Do not carry out any voltage or current measurement in humid environments.
Do not carry out any measurements in case gas, explosive materials or flammables are
present, or in dusty environments.
Avoid any contact with the circuit being measured if no measurements are being
carried out.
Avoid any contact with exposed metal parts, with unused measuring probes, circuits,
etc.
Do not carry out any measurement in case you find anomalies in the instrument such
as deformation, breaks, substance leaks, etc.
Do not carry out any measurement in case of rain or bad weather.
Do not carry out any measurement with open battery compartment.
Pay special attention when measuring voltages higher than 20V, since a risk of
electrical shock exists
.
In this manual, and/or on the instrument, the following symbols are used:
Warning: observe the instructions given in this manual; improper use could
damage the instrument or its components.
High voltage danger: electrical shock hazard.
Double-insulated meter.
1.1. PRELIMINARY
INSTRUCTIONS
This instrument has been designed for use in environments of pollution degree 2.
It can be used for VOLTAGE measurements on installations with measurement
category CAT IV 600V – CAT III 690V. For a definition of measurement categories, see
§ 1.4.
We recommend following the normal safety rules devised by the procedures for
carrying out operations on live systems and using the prescribed PPE to protect the
user against dangerous currents and the instrument against incorrect use.
Do not test circuits exceeding the specified voltage limits.
Make sure the batteries are installed correctly.