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10.2 Flow Configuration
Model
Differential pressure
Coefficient
Unit
Range
Differential pressure
configuration
automatic
Resection
Medium
Cumulation
Quit
Quit
Quit
Model
Coefficient
Unit
Range
Medium
Cumulation
Resection
Frequency type
Vortex street
Model
Coefficient
Unit
Range
Medium
Cumulation
Resection
Linear
Volume configuration
Flow configuration-differential pressure
Flow configuration-frequency type
Flow configuration-linear
Model
[Differential pressure type] The model is suitable for differential pressure flowmeters:
various standard and non-standard throttles (various orifice plates, nozzles, venturi
tubes, etc.), V-cones, elbows, and average speed bar (xx bar) , Tachometer, probe, etc.
When the cursor is in the [Orifice] setting box, press the [Enter key] to enter to set the
required prescription type:
K: instrument factor If: frequency or pulse ρ: medium density
Differential pressure flowmeter: Q = ……………… Formula 4.1
·
[Frequency type] model is suitable for all kinds of fixed frequency signal and
pulse signal flowmeters
: vortex, turbine flowmeter, etc. When the cursor is in the
[Frequency Vortex Street] setting box, press [Enter] to enter to set the frequency value or
pulse count.
·
Differential to square root
:Select this setting when the differential pressure signal of
the differential pressure transmitter has passed the square root.
·
The[linear]modelissuitableforlinearsignalflowmeters:
currentoutputvortex,
electromagnetic, precession, ultrasonic, target, float flowmeter, thermal mass, Coriolis
force mass flowmeter, etc.
·
The square root of the machine:
the differential pressure transmitter has not been
square rooted, and this setting is required when the meter needs to square the
differential pressure signal.
Q = 3600 * If * ρ / K …………………… Equation 4.2
Frequency type flowmeter
(K coefficient unit is times / m3)
Mass flow calculation formula
K: Instrument factor △ P: Differential pressure value of the orifice plate input ρ: Medium
density
K
√
△P*P
18
EN
7
0
1
7
8
7
2
.0
6
0
9
/2
0
1
8
C
H
/E
N
