ABB TRIO-WIRL ST4000 User Manual

Start-Up & Operation 5 - 6 PN25080
TRIO-WIRL INSTRUCTION MANUAL
5.3.2.2 Calibration K-Factor
The median (average) k-Factor value is displayed by
navigating to the above menu item and pressing Enter.
Each flowmeter is calibrated on a test stand at 5 flow-
rate values. The 5 calibration factors are entered into
the converter and recorded on a calibration report and
on a paper tag located in the customer connection lid.
Typical calibration factor values and the signal frequen-
cies for liquids and gases are listed in the following
table. These values are approximate guidelines only:
Vortex Flowmeter TRIO-WIRL V
Swirl Flowmeter TRIO-WIRL S
The converter calculates the actual flowrate using the follow-
ing equations:
Q =
Where:
Q= Actual flowrate at operating conditions [m
3
/s]
f = Frequency [1/s]
k = Calibration k-Factor [1/m
3
]
5.3.2.3 Current Output
The measurement value output characteristic for the
current output is shown in Figure 5-13. Above the Qmin
(operating mode) value the curve is a straight line
whose value at 4 mA is Q = 0 and whose value at 20
mA is the value of Q
max
(operating mode). The current
output for flowrates less than the low flow cutoff value
Q
min
is set 4 mA equivalent to Q = 0.
5.3.2.4 Hardware Configuration
The function assigned to the contact output (terminals
41 & 42) is selected in this submenu. The menus Pulse
width, Min and Max Q_Alarm or Min and Max
T_Alarm are displayed based on the selection of the
output function. „
Meter Size
Inch DN
Typ.
k-Factor
max [1/m
3
]
Liquid
f
max
at
Q
vmax
[Hz]
Gas
f
max
at
Q
vmax
[Hz]
1/2 15
30000 450 1840
1 25 80000 400 1825
1-1/2 40 21100 280 2000
2 50 10000 180 1250
3 80 2900 130 760
4 100 1300 80 650
6 150 380 55 425
8 200 166 43 310
10 250 66 28 235
12 300 39 23 190
Meter Size
Inch DN
Typ.
k-Factor
max [1/m
3
]
Liquid
f
max
at
Q
vmax
[Hz]
Gas
f
max
at
Q
vmax
[Hz]
1/2 15
440000 185 1900
1 25 86000 135 1200
1-1/4 32 33000 107 1300
1-1/2 40 21000 110 1400
2 50 11100 90 1200
3 80 2900 78 690
4 100 1620 77 700
6 150 460 50 470
8 200 194 30 330
12 300 54 16 160
16 400 upon request 13 150
Median
k-Factor
FIGURE 5-13 OUTPUT CURRENT
CHARACTERISTICS
Selections
Contact Output
Function
Menus
Displayed
I/HART None None
I/HART/Pulse_Bin Pulse output Pulse width
I/HART/Q_Alarm_ Flow alarm
Min. and Max.
Q_Alarm
I/HART/T_Alarm_ Temperature alarm
Min. and Max.
T_Alarm
I/HART/S_Alarm_ System alarm None
f
k
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ABB TRIO-WIRL ST4000 Specifications

General

Brand	ABB
Model	TRIO-WIRL ST4000
Category	Measuring Instruments
Language	English