Rosemount 248, Reference Manual

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Reference Manual
00809-0100-4825, Rev BB
August 2005
Rosemount 248
www.rosemount.com
Section 1 Introduction
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-2
Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-3
Return of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-4
SAFETY MESSAGES
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.
Warnings
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 375 Field Communicator in an explosive atmosphere, make
sure the instruments in the loop are installed in accordance with intrinsically safe or
non-intrinsic 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.