
Reference Manual
00809-0100-4697, Rev GA
Section 4: Operation and Maintenance
November 2014
53
Operation and Maintenance
Section 4
Operation and Maintenance
Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 53
Foundation™ fieldbus information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 53
Hardware maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 54
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 55
4.1
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.
4.1.1
Warnings
4.2
F
OUNDATION
™
fieldbus information
F
OUNDATION
fieldbus is an all-digital, serial, two-way, multi-drop communication protocol that
interconnects devices such as transmitters and valve controllers. It is a local area network (LAN)
for instruments that enable basic control and I/O to be moved to the field devices. The Model
848T uses F
OUNDATION
fieldbus technology developed and supported by Emerson Process
Management and the other members of the independent Fieldbus Foundation.
Failure to follow these installation guidelines could result in death or serious injury.
Make sure only qualified personnel perform the installation.
Process leaks could result in death or serious injury.
Do not remove the thermowell while in operation. Removing while in operation may
cause process fluid leaks.
Install and tighten thermowells and sensors before applying pressure, or process
leakage may result.
Electrical shock could cause death or serious injury.
If the senor is installed in a high voltage environment and a fault condition or
installation error occurs, high voltage may be present on transmitter leads and
terminals.
Use extreme caution when making contact with the leads and terminals.
Содержание Rosemount 848T
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