1Section 1: Introduction; Safety Messages; Warnings - Emerson Rosemount 644 Reference Manual

Reference Manual
00809-0200-4728, Rev RA
Section 1
1.1

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 ( ). Refer to the following safety messages before performing
an operation preceded by this symbol.
1.1.1

Warnings

Failure to follow these installation guidelines could result in death or
serious injury.

Explosions could result in death or serious injury.




Process leaks could result in death or serious injury.


Electrical shock could cause death or serious injury.
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Introduction
Introduction
Make sure only qualified personnel perform the installation.
Do not remove the connection head cover in explosive atmospheres when the
circuit is live.
Before connecting HART
the loop are installed in accordance with intrinsically safe or non-incendive field wiring
practices.
Verify 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.
Do not remove the thermowell while in operation.
Install and tighten thermowells and sensors before applying pressure.
Use extreme caution when making contact with the leads and terminals.
®
in an explosive atmosphere, make sure the instruments in
Section 1: Introduction
April 2015
1