Emerson Rosemount 8800D Series Reference Manual page 181

Electronics Verification
May 2016
Example 2 (SI units)
Fluid
Line size
Line pressure
Operating
Temperature
Viscosity
Input
Frequency
K-factor
(compensated)
M
Therefore, an input frequency of 650 Hz represents a flow rate of 3446.4 kg/hr in this
application.
For a given input frequency, you may also determine the electrical current output. Use the
prior example with an input frequency of 275 Hz:
URV= 3600 kg/hr
I = 10.48 mA
Therefore, an input frequency of 275 Hz represents an output electrical current of 10.48
mA.
Electronics Verification
= Saturated Steam
= 80 mm
= 700 kPas
= 170 °F
= 0.015 cp
= 650 Hz
= 10.715 pulses/gallon (via Field Communicator or AMS Device Manager)
= F(Hz) /(K x C
16
= 650/{10.715 x (C
= 650/{10.715 x (0.0733811/4.169)}
= 650/(10.715 x 0.017602)
= 3446.4 kg/hr

(
⁄ × ) LRV
F K C –

16
I =
---------------------------------------------------- -

URV LRV
–

⁄ (
275 10.715 0.017602

I
= -----------------------------------------------------------------------------

3600 0
URV = 3600 kg/hr
LRV = 0 kg/hr
C = C
16 11
ρ
Density( ) = 4.169 kg/cu-mtr (operating)
)
ρ
/ )}
11
LRV= 0 kg/hr

× ( ) 
16 + 4

× ) 0
–
×
(
–
Reference Manual
00809-0100-4004, Rev DC
ρ
/ (from Table C-1 on page168)
F = 275 Hz
in


)
16 4
+

173