157
Reference Manual
00809-0300-4750, Rev CA
Troubleshooting
March 2016
Troubleshooting
Section 9 Troubleshooting
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 157
Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 157
Installation check and guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 158
Diagnostic messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 160
Basic troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 170
Sensor troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 174
Technical support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 178
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 178
9.1 Introduction
This section covers basic transmitter and sensor troubleshooting. Problems in the magnetic
flowmeter system are usually indicated by incorrect output readings from the system, error
messages, or failed tests. Consider all sources when identifying a problem in the system. If
the problem persists, consult the local Emerson
™
Process Management representative to
determine if the material should be returned to the factory. Emerson offers several
diagnostics that aid in the troubleshooting process. Instructions and procedures in this
section may require special precautions to ensure the safety of the personnel performing
the operations. Read the following safety messages before performing any operation
described in this section. Refer to these warnings when appropriate throughout this
section.
The Rosemount
™
8750W performs self-diagnostics on the entire magnetic flowmeter
system: the transmitter, the sensor, and the interconnecting wiring. By sequentially trouble-
shooting each individual piece of the magmeter system, it becomes easier to identify the
problem and make the appropriate adjustments.
If there are problems with a new magmeter installation, see “Installation check and guide”
below for a quick guide to solve the most common installation problems. For existing
magmeter installations, Table 9-7 on page 170 lists the most common magmeter problems
and corrective actions.
9.2 Safety messages
Failure to follow these 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 the operating environment of the sensor and transmitter is
consistent with the appropriate hazardous area approval.
Mishandling products exposed to a hazardous substance may result in death or
serious injury. If the product being returned was exposed to a hazardous
substance as defined by OSHA, a copy of the required Material Safety Data Sheet
(MSDS) for each hazardous substance identified must be included with the
returned goods.
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