Before Use; During Use; Safety Features - Pce Instruments Mx 23 Bedienungsanleitung

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Definition of installation categories :
• CAT IV: Measurement category IV corresponds to measurements taken at the
source of low-voltage installations.
Example: power feeders
• CAT III: Measurement category III corresponds to measurements on building
installations.
Example: industrial machinery or instrument power supplies
• CAT II: Measurement category II corresponds to measurements taken on
circuits directly connected to low-voltage installations.
Example: household appliance and portable tool power supplies
• CAT I: Measurement category I corresponds to measurements taken on
circuits not directly connected to the network.
Example: protected electronic circuits

1.2.1. Before use

• Comply with environmental and storage conditions.
• For your safety, before using the leads, systematically check they are is in
perfect working condition.

1.2.2. During use

As a safety measure, use only suitable leads and accessories supplied
with the instrument or approved by the manufacturer.
• If the measurement category of the accessory is different from that of the
apparatus, the lowest category applies to the unit.
• Never exceed the protection limit values indicated in the specifications for
each type of measurement.
• Before changing the function, disconnect the measurement leads from the
circuit measured.
• Never measure resistances on a live circuit.
• When the instrument is connected to the measurement circuits, never touch an
unused terminal.
1.3.

Safety features

• It is impossible to access the battery or fuse compartment without first
disconnecting the measurement leads.
• When measuring voltages greater than 30 V
flashes on the display.
• When measuring voltages above 7 A, the sign blinks
an intermittent audible signal warns the user.
• When there is a persistent overload on following ranges, an intermittent buzzer
indicates the risk of electric shock : VLOW Z, V
500 mA
DC
(or 50 mA
DC
: MX 24 and and except MX 23), 10 A
(or 50 mA
AC+DC
(except MX 23).
18
or 60 V , the
DC AC
, V , ADP
AC+DC DC
: MX 24 and except MX 23), 500 mA
DC
Portable digital multimeters
Chapter II
symbol
on the display and
, ADP ,
DC AC+DC
AC+DC
, 10 A
AC+DC