Emerson Rosemount 644h Handbuch PDF herunterladen (Seite 51)

SECTION

B-1

B Hazardous Locations Certifications

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page B-1

Hazardous Locations Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . page B-1

European ATEX Directive Information. . . . . . . . . . . . . . . . . . . . . . . . page B-4

Installation Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page B-5

SAFETY MESSAGES

Instructions and procedures in this section may require special precautions to

ensure the safety of the personnel performing the operations. Information that

raises potential safety issues is indicated by a warning symbol ( ). Please refer to

the following safety messages before performing an operation preceded by this

symbol.

HAZARDOUS LOCATIONS CERTIFICATIONS

The Models 644 are 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).

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).

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Emerson Rosemount 644h Handbuch Seite 51