Diagnostic Messages - Emerson Rosemount 8782 Reference Manual

Reference Manual
00809-0100-8782
12.3.3 Remote wiring
1. The electrode signal and coil drive wires must be separate cables.
2. The electrode signal wire and coil drive wire must be twisted shielded cable.
3. See
4. See
5. Verify there is minimal exposed wiring and shielding.
6. Verify that the single conduit that houses both the electrode signal and coil drive
12.3.4 Process fluid
1. The process fluid should have a minimum conductivity of 50 microSiemens/cm (50
2. The process fluid must be free of air and gas.
3. The sensor must be full of process fluid.
4. The process fluid must be compatible with the wetted materials - liner, electrodes,
5. If the process is electrolytic or has cathodic protection, refer to the Installation and
12.4

Diagnostic messages

Problems in the magnetic flowmeter system are usually indicated by incorrect output
readings from the system, error messages, or failed tests. Consider all sources in
identifying a problem in the system.
Reference Manual
Sensors with a ground electrode will not require the grounding straps to be
connected.
See Sensor to transmitter
Rosemount recommends 20 AWG twisted shielded cable for the electrode signal
and 14 AWG twisted shielded cable for the coil drive.
See Sensor to transmitter
Product Certifications
Wiring Diagrams for component wiring.
Less than 1 inch (25 mm) is recommended.
cables do not contain any other wires, including wires from other magmeters.
Note
For installations requiring intrinsically safe electrodes, the signal and coil drive
cables must be run in Individual conduits.
micro mhos/cm).
ground rings, and lining protectors.
™
Refer to the Rosemount
(00816-0100-3033) Technical Note for details.
Grounding of Magmeters in Typical and Special Applications (00840-2400-4727)
Technical Note for special installation requirements.
wiring.
wiring.
regarding wiring installation requirements.
Magnetic Flowmeter Material Selection Guide
Troubleshooting
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