Emerson Rosemount 644h, Reference Manual

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Reference Manual
00809-0100-4728, Rev HA
December 2002
Models 644H and 644R
www.rosemount.com
Appendix B Product Certifications
Hazardous Locations Certificates . . . . . . . . . . . . . . . . . . . page B-1
Installation Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page B-4
HAZARDOUS
LOCATIONS
CERTIFICATES
The Model 644 is available with circuitry that is suitable for intrinsically safe
operation. The Model 644H is available with optional explosion-proof
enclosures and can be specified for non-incendive operation. Individual
transmitters are clearly marked with a tag indicating the approvals they carry.
To maintain certified ratings for installed transmitters, they must be installed in
accordance with all applicable installation codes and approval drawings.
Verify that the operating atmosphere of the transmitter is consistent with the
appropriate hazardous locations certification.
IMPORTANT
Once a device labeled with multiple approval types is installed, it should not
be reinstalled using any of the other labeled approval types. To ensure this,
the approval label should be permanently marked to distinguish the used from
the unused approval type(s).
North American
Approvals
Factory Mutual (FM) Approvals
I5 FM Intrinsic Safety and Non-incendive:
Intrinsically Safe for Class I/II/III, Division 1, Groups A, B, C, D,
E, F, and G.
Non-incendive for Class I, Division 2, Groups A, B, C, and D. Intrinsically
Safe and non-incendive when installed in accordance with Rosemount
drawing 00644-0009.
E5 FM Explosion-Proof and Non-incendive:
Explosion-Proof for Class I, Division 1, Groups B, C, and D. Dust Ignition
Proof for Class II/III, Division 1, Groups E, F, G when installed per
Rosemount Drawing 00644-1049. Non-incendive for Class 1, Division 2,
Groups A, B, C, and D. Temperature Code: T5 (T
amb
= –50°C to 85°C)
Conduit seal not required for compliance with NEC501–5a(1).
Table B-1. Temperature Code
Pi Temperature Code
0.67 W T5 (T
amb
= – 50 °C to 50 °C)
0.67 W T6 (T
amb
= – 50 °C to 40 °C)
1.0 W T4 (T
amb
= – 50 °C to 80 °C)
1.0 W T5 (T
amb
= – 50 °C to 40 °C)