Emerson Rosemount 8600D Series Reference Manual page 100

Appendix A: Reference Data
January 2013
The Reynolds number equation shown below combines the effects of density ( ), viscosity (
inside diameter (D), and flow velocity (V).
Table A-1. Minimum Measurable Meter Reynolds Numbers
Meter Sizes
(Inches / DN)
1 through 4/25 through
6 through 8/150 through
Table A-2. Minimum Measurable Meter Velocities
Liquids
Gases
The  is the process fluid density at flowing
conditions in lb/ft
(1) Velocities are referenced to schedule 40 pipe.
Table A-3. Maximum Measurable Meter Velocities
Liquids
Gases
The  is the process fluid density at flowing
conditions in lb/ft
(1) Velocities are referenced to schedule 40 pipe.
Process temperature limits
Standard
-58 to 482 °F (–50 to 250 °C)
Output signals
4–20 mA digital HART signal
Superimposed on 4–20 mA signal
Optional scalable pulse output
0 to 10000 Hz; transistor switch closure with adjustable scaling via HART communications;
capable of switching up to 30 Vdc, 120 mA maximum.
92
R =
D
Reynolds Number
Limitations
100
5000 minimum
200
Feet per Second
36/
36/
3
for ft/s and kg/m
(Use the smaller of the two values)
Feet per Second Meters per Second
90,000/ or 25
134,000/ or 7.6
90,000/ or 250 134,000/ or 76
3
for ft/s and kg/m
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
VD
----------- -

cp
(1)
Meters per
Second
54/
54/
3
for m/s
(1)
3
for m/s
Specifications and Reference Data
Reference Manual
00809-0100-4860, Rev BC
), pipe
cp