Certification Instructions - Emerson Rosemount 975UF Reference Manual

Reference Manual
00809-0100-4977
For wiring, use color-coded conductors or suitable wire markings or labels. You may use 12
to 20 AWG (0.5 mm
number of detectors used on the same line and the distance from the control to the
ground unit, in compliance with specifications. See
wiring.).
2.4

Certification instructions

WARNING
Flammable
Do not open the detector, even when isolated, in a flammable atmosphere.
Use the following certification instructions:
• The cable entry point may exceed 167 °F (75 °C). Take suitable precautions when
selecting the cable.
• The equipment may be used with flammable gases and vapors with apparatus groups
IIA, IIB, and IIC:
—
—
• Only suitably trained personnel should install the detector, in accordance with the
applicable code of practice, such as EN 60079-14:1997.
• Only suitably trained personnel should inspect and maintain the detector, in
accordance with the applicable code of practice, such as EN 60079-17.
• Only suitably trained personnel should repair the detector, in accordance with the
applicable code of practice, such as EN 60079-19.
• The certification of this equipment relies upon the following materials used in its
construction:
—
—
• If the equipment is likely to come into contact with aggressive substances, take
suitable precautions to prevent it from being adversely affected, thus ensuring that the
type of protection provided by the equipment is not compromised.
—
—
Refer to
Rosemount 975UF
2
to 3.5 mm
T5 in the ambient temperature range: -67 °F (-55 °C) to 167 °F (75 °C)
T4 in the ambient temperature range: -67 °F (-55 °C) to 185 °F (85 °C)
Enclosure: 316L stainless steel or aluminum
Window: sapphire glass
Aggressive substances: acidic liquids or gases that may attack metals or solvents
that may affect polymeric materials.
Suitable precautions: regular checks as part of routine inspections or establishing
from the material's data sheets that it is resistant to specific chemicals.
Product certifications for more information about product certifications.
2
) wires for site wiring. Select wire gauge based on the
General instructions for electrical
Installing the detector
June 2021
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