Section
6-1
6 Specifications
SPECIFICATIONS
Functional Specifications Flowtube Compatibility
Model 8712C is compatible with all Rosemount flowtubes – Model 8705,
Model 8707, and Model 8711. The Model 8712U is also compatible with
AC and DC powered flowtubes of other manufacturers. The Model
8712H is only compatible with Model 8707 high-signal flowtube.
Flowtube Coil Resistance
Flow Rate Range
Capable of processing signals from fluids that are traveling between
0.04 and 30 ft/s (0.01 to 10 m/s) for both forward and reverse flow in all
flowtube sizes; full scale continuously adjustable between –30 and 30
ft/s (–10 to 10 m/s)
Conductivity Limits
Process liquid must have a conductivity of 5 microsiemens/cm (5
micromhos/cm) or greater for Model 8712C/U; process liquid must have
a conductivity of 50 microsiemens/cm (50 micromhos/cm) for the Model
8712H (excludes the effect of interconnecting cable length in remote
mount transmitter installations)
Power Supply
Installation Coordination
Installation (overvoltage) Category II
Power Consumption
Ambient Temperature Limits
Operating
Model 8712C: 25 V maximum
Model 8712U: 350 V maximum
Model 8712H: 10 V maximum
Model 8712C/U: 115 or 230 V ac ±10%,
50–60 Hz or 10–30 V dc
Model 8712H: 115 V ac ±10%,
50–60 Hz
Model 8712C/U: 20 watts maximum
Model 8712H: 300 watts maximum
Model 8712C/U: –20 to 140 °F (–29 to 60 °C)
with local operator interface
–30 to 150 °F (–34 to 66 °C)
without local operator interface
Model 8712H: –20 to 130 °F (–29 to 54 °C) with
or without local operator interface
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