Emerson Rosemount 8782 Reference Manual page 152

Product Specifications
November 2019
Table A-5: Electrode type
Electrode type General characteristics
Flat head
Table A-6: Process reference options
Grounding
options
Grounding
straps (no
grounding
options
selected).
Reference
electrode
Grounding
rings
Lining
protectors
Table A-7: Process reference installation
Type of pipe
Conductive
unlined pipe
Conductive lined
pipe
Non-conductive
pipe
152
(continued)
Low profile head
Best option for abrasive slurries
General characteristics
Acceptable for conductive unlined pipe
Grounding straps provided at no cost
Same material as measurement electrodes
Sufficient grounding option when process fluid conductivity is greater than 100
microSiemens/cm
Not recommended in electrolysis applications, galvanic corrosion applications,
applications where the electrodes may coat, or non-conductive pipe.
Low conductivity process fluids
Cathodic or electrolysis applications that may have stray currents in or around
the process
Variety of materials for process fluid compatibility
Protect upstream edge of sensor from abrasive fluids
Permanently installed on sensor
Protect liner material from over torquing of flange bolts in many cases
Provide process reference ground path and eliminate need for grounding rings or
reference electrode
Required for applications where Flexitallic gaskets are used
Grounding Grounding rings
straps
Acceptable Not required
Not acceptable Acceptable
Not acceptable Acceptable
®
Rosemount 8782 Slurry Magnetic Flow Meter Transmitter with HART Protocol
Reference Manual
00809-0100-8782
Reference Lining protectors
electrode
Not required Not required
Acceptable Acceptable
Not Acceptable
recommended