Emerson Rosemount 644 - 5.7.2 I7 IECEx Intrinsic Safety; 5.7.3 N7 IECEx Type n - with enclosure

2. 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.
Additional Specific Conditions of Use (X) when “XA” designation is
ordered:
Guard DIN Style sensors against impacts greater than 4 J.
Process temperature
range at sensor
connection
(1)
(°C)
Ambient temperature
range (°C)
Temperature class
-60 °C to +70 °C -60 °C to +70 °C T6
-60 °C to +80 °C -60 °C to +80 °C T5...T1
(1) Sensor Connection is where the sensor threads into the transmitter or
junction box housing.
5.7.2 I7 IECEx Intrinsic Safety
Certificate:
[Headmount HART
®
]: IECEx BAS 12.0069X
[Headmount Fieldbus/PROFIBUS
®
, Railmount HART]:
IECEx BAS 07.0053X
Standards:
IEC 60079-0: 2017, IEC 60079-11: 2011
Markings:
Ex ia IIC T6…T4 Ga
See Table 5-5 for Entity Parameters and Temperature Classifications.
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 1 GΩ; 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:
IECEx BAS 07.0055
Quick Start Guide April2023
30 Rosemount 644