Reference Manual
00809-0100-4793, Rev CA
August 2004
Rosemount 8742C
www.rosemount.com
Section 2
Installation
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1
Transmitter Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-2
Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-2
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-4
This section covers the steps required to physically install the magnetic
flowmeter. Instructions and procedures in this section may require special
precautions to ensure the safety of the personnel performing the operations.
Please refer to the following safety messages before performing any
operation in this section.
SAFETY INFORMATION
Failure to follow these installation guidelines could result in death or serious injury:
Installation and servicing instructions are for use by qualified personnel only. Do not
perform any servicing other than that contained in the operating instructions, unless
qualified. Verify that the operating environment of the flowtube and transmitter is
consistent with the appropriate FM or CSA approval.
Do not connect a Rosemount 8742C to a non-Rosemount flowtube that is located in an
explosive atmosphere.
The flowtube liner is vulnerable to handling damage. Never place anything through the
flowtube for the purpose of lifting or gaining leverage. Liner damage can render the
flowtube useless.
To avoid possible damage to the flowtube liner ends, do not use metallic or
spiral-wound gaskets. If frequent removal is anticipated, take precautions to protect the
liner ends. Short spool pieces attached to the flowtube ends are often used for
protection.
Correct flange bolt tightening is crucial for proper flowtube operation and life. All bolts
must be tightened in the proper sequence to the specified torque limits. Failure to
observe these instructions could result in severe damage to the flowtube lining and
possible flowtube replacement.
Summary of Contents for 8700 Series
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