Emerson Rosemount 644 Quick Start Manual page 30

Quick Start Guide
3. Guard the LCD display cover against impact energies greater than 4
joules.
4. Flameproof joints are not intended for repair.
5. A suitable certified Ex d or Ex tb enclosure is required to be connected
to temperature probes with Enclosure option "N".
6. Care shall be taken by the end user to ensure that the external
surface temperature on the equipment and the neck of DIN Style
Sensor probe does not exceed 130 °C.
7. Non-Standard Paint options may cause risk from electrostatic
discharge. Avoid installations that cause electrostatic build-up on
painted surfaces, and only clean the painted surfaces with a damp
cloth. If paint is ordered through a special option code, contact the
manufacturer for more information.
5.7.2 I7 IECEx Intrinsic Safety
Certificate: [Headmount HART
Standards: IEC 60079-0: 2017, IEC 60079-11: 2011
Markings:
See Table 5-5
Special Conditions for Safe Use (X):
1. The equipment must be installed in an enclosure which affords it a
degree of protection of at least IP20 in accordance with the
requirements of IEC 60529. Non-metallic enclosures must have a
surface resistance of less than 1G Ω; light alloy or zirconium
enclosures must be protected from impact and friction when
installed in a Zone 0 environment.
2. When fitted with the Transient Protector Assembly, the equipment is
not capable of withstanding the 500 V test as defined in Clause
6.3.13 of IEC 60079-11:2011. This must be taken into account during
installation.
5.7.3 N7 IECEx Type n – with enclosure
Certificate:
Standards:
Markings:
30
[Headmount Fieldbus/PROFIBUS
BAS 07.0053X
Ex ia IIC T6...T4 Ga
for Entity Parameters and Temperature Classifications.
IECEx BAS 07.0055
IEC 60079-0: 2011, IEC 60079-15: 2010
Ex nA IIC T5 Gc (–40 °C ≤ T
®
]: IECEx BAS 12.0069X
®
, Railmount HART]: IECEx
≤ +70 °C)
a
April 2021
Rosemount 644