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Installation
3.4.2 Electrostatic Discharge (ESD) Considerations
Some internal electronic components can be damaged by static electricity, resulting in
degraded instrument performance or eventual failure.
The manufacturer recommends taking the following steps to prevent ESD damage to the
instrument:
• Before touching any instrument electronic components (such as printed circuit cards
and the components on them) discharge static electricity from your body. This can be
accomplished by touching an earth-grounded metal surface such as the chassis of an
instrument, or a metal conduit or pipe.
• To reduce static build-up, avoid excessive movement. Transport static-sensitive
components in anti-static containers or packaging.
• To discharge static electricity from your body and keep it discharged, wear a wrist
strap connected by a wire to earth ground.
• Handle all static-sensitive components in a static-safe area. If possible, use anti-static
floor pads and work bench pads.
3.4.3 Electrical installation
High-voltage wiring for the instrument is protected by a protective casing. The protective
casing must remain in place unless a qualified installation technician is installing wiring for
power.
Always disconnect power to the instrument when making any electrical connections.
3.4.3.1 Protective earth
MULTIMETER 44 requires protective earth connection. Connect to terminal 8 a ground wire
of the electrical system.
3.4.3.2 Instrument power cord
The cable must be in accordance with IEC 60 227 or IEC 60 245 and designed to
withstand at least a current of 0.5 A with a voltage of 265 V.
3.4.4 Sensors connection
Follow the steps 1 to 3 on Figure 4 Wall mounting, page 14 to remove the frontal cover
and access to the interior view for the instrument connections.
See additional information in the sections of the corresponding channels.
DANGER
Always disconnect power to the instrument when making any electrical connections
NOTICE
The electrical installation where you connect the instrument should have an automatic switch
circuit breaker which must fulfill:
1 It must be in the immediate proximity of the instrument and must easily be accessible for the
operator.
2 It must be marked like device of disconnection of the instrument.
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