Special Conditions For Safe Use - Emerson Rosemount 975 Series Quick Start Manual

Quick Start Guide
3

Special conditions for safe use

• Lids securing fasteners shall be property class A4 with a yield stress of
344N/mm
• Units may be painted or fitted with optional accessories, some of which
are made of non-metallic material or have a non-metallic coating which
could potentially generate an ignition-capable level of electrostatic
charge under certain extreme conditions (such as high pressure steam)
which might cause a build-up of electrostatic charges on the non-
conducting surfaces. Additionally, cleaning of the equipment should
only be done with a damp cloth.
• Under rated conditions, the cable entries reach a temperature exceeding
158 °F (70 °C), and the branching point exceeds a temperature of 176 °F
(80 °C); this shall be considered when installing cable glands, and only
cables that have temperature ratings suitable for the application shall be
used.
• Flameproof joints are not intended to be repaired.
• The Rosemount 975 Series Flame Detectors can be fitted with an
unmolded (non-encapsulated) end of line (EOL) resistor. Such a resistor
can only be fitted into the flameproof "Ex d" compartment as indicated in
the instructions. The EOL resistor shall be rated at 1.56 kΩ, 1 W
minimum.
To reduce the risk of ignition of a flammable or explosive atmosphere,
strictly adhere to the following statements:
WARNING
Do not open when energized.
Do not open when an explosive atmosphere is present.
Temperature at branching point may exceed 212 °F (100 °C).
CAUTION
Potential electrostatic charging hazard
See instructions.
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May 2021
Emerson.com/Rosemount