Rosemount 8800D Series User Manual

Reference Manual
00809-0100-4003, Rev BA
August 2010
Rosemount 8800D
C-10
For a given input frequency, you may also determine the current output. Use
the prior example with an input frequency of 275 Hz:
URV= 3600 kg/hr LRV= 0 kg/hr F
in
(Hz) = 275
= 10.48 mA
Therefore, an input frequency of 275.00 Hz represents an output current of
10.48 mA.
Example 3 (SI units)
Therefore, an input frequency of 700.00 Hz represents a flow rate of 9259.2
NCMH in this application.
For a given input frequency, you may also determine the current output. Use
the prior example with an input frequency of 375 Hz.
URV= 10000 NCMH LRV= 0 NCMH F
in
(Hz) = 375.00
= 11.94 mA
Therefore, an input frequency of 375.00 Hz represents a current output
of 11.94 mA.
Fluid
= Natural gas URV
= 10,000 NCMH
Line size
= 80 mm LRV = 0 NCMH
Line pressure
= 1000 KPas C
20
= C
x
/sp. units factor
(from Table C-1 on
page C-5)
Operating
Temperature
= 10 °F Density () = 9.07754
kg/cu-mtr
(operating)
Viscosity
= 0.01 cp
Input
Frequency
= 700 Hz
K-factor
(compensated)
= 10.797 (via Field
Communicator or AMS)
Q
= F(Hz) /(K x C
20
) where: C
20
= C
11
/10.48 (Density Ratio)
= 700/{10.797 x (.0733811/10.48)}
= 9259.2 NCMH
I
FHzKC
16
 LRV–
URV LRV–
-----------------------------------------------------------
16


4+=
I
275 10.715 0.0176020–
3600 0–
----------------------------------------------------------------------------------
16



4+=
I
FHzKC
20
 LRV–
URV LRV–
--------------------------------------------------------------- -
16


4+=
I
375 10.797 0.00700200–
10000 0–
--------------------------------------------------------------------------------------
16



4+=

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