Emerson Rosemount 644 - 5.7.4 NG IECEx Type n - without enclosure; 5.7.5 NK IECEx Dust

Standards:
IEC 60079-0: 2011, IEC 60079-15: 2010
Markings:
Ex nA IIC T5 Gc (–40 °C ≤ T
a
≤ +70 °C)
5.7.4 NG IECEx Type n – without enclosure
Certificate:
[Headmount Fieldbus/PROFIBUS
®
, Railmount HART
®
]:
IECEx BAS 13.0053X
[Headmount HART]: IECEx BAS 12.0070U
Standards:
IEC 60079-0: 2017, IEC 60079-15: 2010
Markings:
[Headmount Fieldbus/PROFIBUS, Railmount HART]: Ex
nA IIC T5 Gc (–40 °C ≤ T
a
≤ +70 °C)
[Headmount HART]: Ex nA IIC T6…T5 Gc; T6(–60 °C ≤ T
a
≤
+40 °C); T5(–60 °C ≤ T
a
≤ +85 °C)
Special Conditions for Safe Use (X):
1. The Rosemount 644 Temperature Transmitter must be
installed in a suitably certified enclosure such that it is
afforded a degree of protection of at least IP54 in accordance
with IEC 60529 and IEC 60079-15.
2. When fitted with the Transient Protector Assembly, the
equipment is not capable of withstanding the 500 V test. This
must be taken into account during installation.
5.7.5 NK IECEx Dust
Certificate:
IECEx DEK 19.0041X
Standards:
IEC 60079-0: 2017, IEC 60079-31: 2013
Markings:
Ex tb IIIC T130 °C Db, (–60 °C ≤ T
a
≤ +80 °C)
Specific Condition of Use (X):
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:
The spring loaded adapter style sensors and DIN style sensors must
be installed in a thermowell to maintain Ex tb protection.
April2023 Quick Start Guide
Quick Start Guide 31