Introduction 1-7
z Parts of the enclosure may be non-conducting and may
generate an ignition-capable level of electrostatic charge under
certain extreme conditions. The user should ensure that the
equipment is not installed in a location where it may be
subjected to external conditions (such as high-pressure steam),
which might cause a build-up of electrostatic charge on non-
conducting surfaces.
z As aluminum is used at the accessible surface of this unit, in
the event of rare incidents, ignition sources due to impact and
friction sparks may occur. This shall be considered when it is
being installed, particularly in locations that require equipment
with a Group II Ga level of protection.
z Measures shall be taken to limit transient over voltages to the
USB Serial Interface to an appropriately low level, in
accordance with Overvoltage Category I (IEC 60664-1).
z This equipment (ADS Model 8000-FST-IM) shall only be used
in the hazardous area when it has been fully assembled; no
maintenance of internal parts or battery changes shall be
undertaken unless the unit is located in a safe area.
z The 8000-FHK/FST-IM Monitor Assembly common line is
connected to the metal enclosure, therefore when it is powered
by the “External Power and Communications Unit” (ExPAC),
the Monitor Assembly shall be bonded to the ExPAC earth
with a conductor having a minimum cross-sectional area of 4
mm2, to achieve a resistance ≤1 Ω.
z Applicable to the USB Serial Interface: Measures shall be
taken to limit transient over voltages to the USB Serial
Interface to an appropriately low level, in accordance with
Overvoltage Category 1 (IEC 60664-1).
z The equipment shall be installed as per installation drawing
8000BK0009.
z The External Power and Communications Unit (ExPAC) may
only be mounted in a non-hazardous location.
z The 8000-FST-IM Monitor Assembly common line is
connected to the metal enclosure. Therefore, when it is
powered by the “External Power and Communications Unit”
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