General Instructions; Precautions And Safety Measures; Preliminary - Metrix MX 21 Manual De Instrucciones

1. GENERAL INSTRUCTIONS

You are the new owner of a 2000 ct portable digital multimeter and we
thank you for your choice.
This instrument complies with the specifications set out in the IEC
61010-1 + A1 + A2, 1995, publication concerning safety requirements
for electronic measuring apparatus.
To get the best service from this instrument, read carefully this user's
manual and respect the detailed safety precautions.
The contents of this manual must not be reproduced in any form
whatsoever without our consent.

1.1 Precautions and safety measures

1.1.1 Preliminary

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This device can be used for measurements on category ΙΙΙ
installations, for voltages never exceeding 600 V (AC or DC)
relative to the earth.
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Definition of overvoltage categories (see IEC 664-1 publication) :
CAT I : The CAT I circuits are protected by measures limiting
transient overvoltages to appropriate low level.
Example : protected electronic circuits
CAT II : The CAT II circuits are power supply circuits of
appliances
overvoltages of an average level.
Example : appliances and portable equipment
CAT III : The CAT III circuits are power supply circuits of power
equipment with high transient overvoltages.
Example : fixed installation or industrial equipment
CAT IV :The CAT IV circuits may comprise very important
transient overvoltages.
Example : primary supply level
∗
When using this multimeter, the user must observe all normal
safety rules concerning:
- protection against the dangers of electric current.
- protection of the multimeter against misuse.
∗
For your own safety, only use the test probes supplied with the
instrument. Before use, check that they are in good condition.
or portable equipment with transient