Safety Messages; Warnings; Section 2 Safety Messages - Emerson Rosemount 644H Reference Manual

Reference Manual
00809-0100-4728, Rev HA
December 2002
Section 2

SAFETY MESSAGES

Warnings

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Installation
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-4
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-9
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-12
Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-15
Instructions and procedures in this section may require special precautions to
ensure the safety of the personnel performing the operations. Information that
potentially raises safety issues is indicated by a warning symbol ( ). Please
refer to the following safety messages before performing an operation
preceded by this symbol.
Failure to follow these installation guidelines could result in death or
serious injury.
• Make sure only qualified personnel perform the installation.
Explosions could result in death or serious injury.
• Do not remove the connection head cover in explosive atmospheres when the
circuit is live.
• Before connecting a Model 275 HART Communicator in an explosive atmosphere,
make sure the instruments in the loop are installed in accordance with instrinsically
safe or non-incendive field wiring practices.
• Verify that the operating atmosphere of the transmitter is consistent with the
appropriate hazardous locations certifications.
• All connection head covers must be fully engaged to meet
explosion-proof requirements.
Process leaks could result in death or serious injury.
• Do not remove the thermowell while in operation.
• Install and tighten thermowells and sensors before applying pressure
Electrical shock could cause death or serious injury.
• Use extreme caution when making contact with the leads and terminals.
Models 644H and 644R