User guide

TSFLUXUS_G601V1-5-1US_Lus, 2014-02-25 5
Technical Specification FLUXUS® G601
Typical Measurement Setup
Standard Volumetric Flow Rate
The standard volumetric flow rate can be selected as physical quantity to be measured. It will be calculated in-
ternally by:
N
=
.
p/p
N
.
T
N
/T
.
1/K
where
The operational pressure p and the operational temperature T of the medium will be entered directly as fixed
values into the transmitter.
or:
If inputs are installed (optional), pressure and temperature can be measured by the customer and fed in the
transmitter.
The gas compressibility coefficient K of the gas is entered in the transmitter:
• as fixed value or
• as approximation according to e.g. AGA8 or GERG
Example of a measurement setup in reflect arrangement with connection of the inputs
to an external process pressure and process temperature measurement for standard volumetric flow rate calculation
N
= standard volumetric flow rate
= operating volumetric flow rate
p
N
= standard pressure (absolute value)
p = operating pressure (absolute value)
T
N
= standard temperature in K
T = operating temperature in K
K = compressibility coefficient of the gas
: ratio of the compressibility factors of the gas at operating
conditions and at standard conditions Z/Z
N
U L T R A S O N I C F L O W M E T E R
1 3
2
0
4 65
7
8
N E X T
Q
O N
Q -
Q +
M U X
D I S P
Q
O F F
L I G H T
E N T E R
C
O N
C H A N N E L A
C H A N N E L B
9
D I S P
E N T E R
3 x O F F
M O D E
B R K
B A T T E R Y
PT
transducers
damping mat
transmitter
RS232
outputs
inputs
power supply unit/battery charging unit
temperature probee.g. external pressure sensor
V
·
V
·
V
·
V
·