Sensors with a ground electrode will not require the grounding straps to be
connected.
12.3.3 Remote wiring
1. The electrode signal and coil drive wires must be separate cables.
See Sensor to transmitter wiring.
2. The electrode signal wire and coil drive wire must be twisted shielded cable.
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 wiring.
3. See Product Certifications regarding wiring installation requirements.
4. See Wiring Diagrams for component wiring.
5. Verify there is minimal exposed wiring and shielding.
Less than 1 inch (25 mm) is recommended.
6. Verify that the single conduit that houses both the electrode signal and coil drive
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.
12.3.4
Process fluid
1. The process fluid should have a minimum conductivity of 50 microSiemens/cm (50
micro mhos/cm).
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,
ground rings, and lining protectors.
Refer to the Rosemount
™
Magnetic Flowmeter Material Selection Guide
(00816-0100-3033) Technical Note for details.
5. If the process is electrolytic or has cathodic protection, refer to the Installation and
Grounding of Magmeters in Typical and Special Applications (00840-2400-4727)
Technical Note for special installation requirements.
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 Troubleshooting
00809-0100-8782 November 2019
Reference Manual 125
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