Rosemount 8800D Series User Manual

Reference Manual
00809-0100-4004, Rev BA
August 2010
Rosemount 8800D
A-2
NOTE
Consult your local sales representative to obtain a computer sizing program
that describes in greater detail how to specify the correct flowmeter size for
an application.
The Reynolds number equation shown below combines the effects of density (), viscosity (
cp
),
pipe inside diameter (D), and flow velocity (V).
Table A-1. Minimum Measurable Meter Reynolds Numbers
Meter Sizes
(Inches / DN)
Reynolds Number Limitations
1
/2 through 4/15 through 100
5000 minimum
6 through 12/150 through 300
Table A-2. Minimum Measurable Meter Velocities
(1)
(1) Velocities are referenced to schedule 40 pipe.
Feet per Second Meters per Second
Liquids
(2)
(2) This minimum measurable meter velocity is based on default filter
settings.
Gases
(2)
The  is the process fluid density at flowing conditions in
lb/ft
3
for ft/s and kg/m
3
for m/s
Table A-3. Maximum Measurable Meter Velocities
(1)
(Use the smaller of the two values)
(1) Velocities are referenced to schedule 40 pipe.
Feet per Second Meters per Second
Liquids
Gases
(2)
(2) Accuracy limitations for gas and steam for Dual-style meters
(
1
/2-in. to 4-in.): max velocity of 100 ft/s (30.5 m/s).
The  is the process fluid density at flowing conditions in
lb/ft
3
for ft/s and kg/m
3
for m/s
R
D
VD 

cp
------------=
36/
54/
36/
54/
90,000/ or 25
134,000/ or 7.6
90,000/ or 250
134,000/ or 76

Rosemount 8800D Series Specifications

General

Type	Vortex Flow Meter
Measurement Principle	Vortex Shedding
Operating Temperature	-40 to 185°F (-40 to 85°C)
Storage Temperature	-40 to 185°F (-40 to 85°C)
Communication Protocols	FOUNDATION Fieldbus
Material	316 stainless steel
Fluid Type	Liquid, Gas, Steam
Line Size	1/2 to 8 inches (15 to 200 mm)
Approvals	ATEX, IECEx, CSA, FM
Output Signal	4-20 mA
Process Connection	Flanged, Wafer, Threaded
Electrical Connection	M20
Protection Rating	IP66
Mounting Style	Wafer, Flanged