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4 Flow rate sensors
The following flow rate sensor options are available:
• US Echo II
• SIKA
• U/I (sensors issuing voltage or current signals)
• FlowRotor
• VFS
• V40
Depending on the flow rate sensor selected further adjustment channels appear.
The following table gives an overview of the sensors and the corresponding ad-
justment values.
Flow rate
sensor
Corresponding
adjustment
channels
Description
Adjustment
range / selection
Factory
setting
US Echo II US Echo II
Impulse rate
0.1 … 100.0 l/Imp 1.0 l/Imp
SIKA
SIKA
Type
VY1030M,
VY1030K, VTY20
VTY20
U/I
U/I
Voltage or current signal
4-20 mA, 0-10 V
0-10 V
Curve
Curve submenu
Unit
Flow rate unit
m³/h, l/min
l/min
Volt 1
Voltage minimum flow rate (only
if 0-10 V has been selected)
0.0 … 10.0 V
1.0 V
Current 1
Current minimum flow rate (only
if 4-20 mA has been selected)
0 … 20 mA
4 mA
Fl.r.1
Minimum flow rate
0.0 … 500.0 l/min
0.0 … 30.0 m³/h
1.0 l/min
1.0 m³/h
Volt 2
Voltage maximum flow rate (only
if 0-10 V has been selected)
0.0 … 10.0 V
10.0 V
Current 2
Current maximum flow rate (only
if 4-20 mA has been selected)
0 … 20 mA
20 mA
Fl.r.2
Maximum flow rate
0.0 … 500.0 l/min
0.0 … 30.0 m³/h
10.0 l/min
10.0 m³/h
FlowRotor FlowRotor
Type
DN20, DN25,
DN32
DN20
VFS
VFS
Type
2-40, 1-12
2-40
V40
V40
Impulse rate
0.1 … 100.0 l/Imp 1.0 l/Imp
The characteristic curve of the voltage and current signal as a function of the flow
rate is defined by 2 set points. At a flow rate of Fl.r.1 the voltage signal is Volt 1 and
the current signal Current 1 respectively. At a flow rate of Fl.r.2 the voltage signal
is Volt 2 and the current signal Current 2 respectively. The device automatically
calculates the characteristic curve resulting from these values.
Note
The flow rate sensor has to be installed in the return.
Voltage signal in V / Current signal in mA
Flow rate in l/min
Содержание WMZ Plus
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