SiKA VVX Vortex Flow Sensors Instruction Manual
- May 15, 2024
- Sika
Table of Contents
VVX Vortex Flow Sensors
Instruction Manual
Vortex flow
sensors VVX
© S I KA • B a _ VVX • 10 / 20 23 .
About This Operating Manual
- Read carefully before use!
- Retain for later reference!
If you have any problems or questions, please contact your supplier or contact
us directly:
SIKA Systemtechnik GmbH
Struthweg 7–9
34260 Kaufungen / Germany
+49 5605 803-0
+49 5605 803-555
info@sika.net
www.sika.net
Safety Instructions
Read the operating manual carefully. Follow all instructions to avoid personal
injury and property damage.
Intended use
The Vortex flow sensor VVX may only be used for measuring and metering water
and aqueous solutions.
WARNING
The Vortex flow sensors of the series VVX are no safety components in
accordance with Directive 2006/42/EC (Machine Directive).
- Never use the device as a safety component.
The operational safety of the device supplied is only guaranteed by intended
use. The specified limits (→ p. 28) must not be exceeded under any
circumstances. Before installation, check whether the material of the device
is suitable for the medium to be measured and other media used (e.g.
disinfectants and detergents) (→ p. 28).
Due to the current demands on quality and safe use of products it is not
always avoidable, that substances are also included which, when considered
separately, meet the criteria of Article 57, REACH directive. In the series
VVX (vortex flow sensors) built-in piezoceramic bending vibrators can contain
more than 0.1% lead zirconate titanate (PZT), CAS No. 12626-81-2, EC No.
235-727-4, which is listed as SVHC according to REACH.
After the sintering process, however, the powdery PZT is bound in almost
insoluble crystalline form. Proper use for the intended use may result in no
release. Risks can occur only with oral or inhalation intake, which can be
excluded if used properly.
Qualified personnel
- The personnel entrusted with the installation, operation and maintenance of the device must be appropriately qualified. This can be done by training or instruction.
General safety instructions
- Only operate the device when it is in perfect condition. Damaged or defective devices must be checked immediately and replaced if necessary.
- Type plates or other information on the device must not be removed or made unrecognizable, as otherwise any guarantee and manufacturer’s liability will be invalidated.
Installation
IMPORTANT
Mechanical loads, exceeding the measuring range or pressure surges can damage
the VVX sensor.
- The sensor in the measuring tube must not be exposed to mechanical loads.
- Avoid water hammers during commissioning or normal operation.
IMPORTANT
Bubble formation and cavitation in the medium can cause sensor malfunction and
must be avoided. Cavitation is strongly dependent on the medium, flow rate and
medium temperature. SIKA recommends the following minimum system pressures.
Recommended minimum system pressure
VVX15| VVX20| VVX25| VVX32| VVX40
1.0 bar| 1.4 bar| 1.6 bar| 2.0 bar| 2.2 bar
IMPORTANT
External vortices are generated by disturbances (offsets, protruding flat
gaskets, changes in diameter, etc.) of the flow in the inlet and outlet
sections. They lead to false pulses so that the error limits of the VVX can no
longer be guaranteed.
- Ensure that the inside diameter of the pipe matches the inside diameter of the VVX.
- Avoid obstructions in the inlet and outlet sections.
- Provide suitable calming sections at the inlet and outlet.
IMPORTANT
Mechanical vibrations (e.g. pump, compressor …) transmitted to the VVX can
lead to incorrect measurements.
- Select the installation location so that no vibrations are transmitted to the VVX.
- The VVX can theoretically be installed at any location on a straight pipe.
- Flow sensors with plastic pipe sections must be installed in the pipeline stress-free.
Length of inlet and outlet sections
| VVX15 / VVX20 / VVX25| VVX32 / VVX40
---|---|---
Inlet section X1| Min. 10x DN| 250 mm
Outlet section X2| Min. 5 DN| Min. 5 DN
- The flow sensor can be installed in horizontal and vertical pipelines. The flow sensor is only suitable for use in completely filled pipelines.
- Vortex flow sensors are not completely independent of the flow profile due to their principle. A calming section is therefore necessary.
In order to achieve the highest possible measuring accuracy, straight inlet and outlet pipes with an appropriate inner diameter should be used (VVX15 = 13 mm • VVX20 = 19 mm • VVX25 = 25 mm • VVX32 = 32 mm • VVX40 = 40 mm).
2.1 Mounting With Thread
IMPORTANT
-
Only use the O-rings supplied.
-
Observe the flow direction on the device.
-
Observe the mounting dimensions (→ p. 29).
-
Select a suitable location for installation ( 2 “Installation”).
To ensure the best possible measuring accuracy, a vertical installation position with increasing flow is preferable (no collecting of dirt deposits). -
Install suitable pipe fittings at the installation location.
-
Insert the VVX with the gaskets.
-
Screw the union nuts of the pipe fittings onto the process connections of the VVX.
IMPORTANT
Pay attention to maximum torque.
While tightening, counter the union nut on the hexagon of the process
connection!
If you do not counter it, the VVX can be damaged.
Maximum torque
VVX15 G¾| VVX20 G1| VVX25 G1¼| VVX32 G1 ½|
VVX40 G2
⎔19| ⎔24| ⎔30| ⎔36| ⎔46
9 Nm| 15 Nm| 20 Nm| 30 Nm| 60 Nm
⎔ = Width across flats
• Tighten both union nuts.
When tightening, counter the hexagon of the device with a spanner.
2.2 Mounting With QuickFasten
IMPORTANT
-
Observe the mounting dimensions of the VVX 1 (→ p. 29).
-
Observe the dimensions of the inlet 3 and outlet 2 (→ p. 29).
-
Only use suitable O-rings 4 of the right size (25.7 x 3.5).
-
Observe the flow direction on the device 5.
-
Select a suitable location for installation (→ 2 “Installation”).
To ensure the best possible measuring accuracy, a vertical installation position with increasing flow is preferable (no collecting of dirt deposits). -
Install suitable QuickFasten connections (inlet and outlet) at the installation location.
-
1 Mount the O-rings on the VVX and on the inlet.
-
2 Put the VVX on the inlet.
Be careful not to damage the O-ring. -
3 Slide the clip over the connection until it snaps into place.
-
4 Put the outlet on the VVX.
Be careful not to damage the O-ring. -
5 Slide the clip over the connection until it snaps into place.
IMPORTANT
The clip must snap properly.
The webs of the VVX and the inlet or outlet must be located in the slots of
the clip.
Electrical Connection
The electrical connection of the VVX is made via an M12x1 plug mounted on the cover of the electronics housing.
CAUTION
The electrical connection may only be carried out by a qualified electrician.
- De-energize the electrical system before connecting the VVX.
IMPORTANT
Exceeding the specified limits will cause damage to the device’s electronics.
In the absence of current limiting, there is a risk of fire due to device
overheating.
- Always connect the VVX to an electrical source with power limitation.
Optional wiring
All VVX are configured to allow one flow output (frequency or analogue) to be
wired as standard.
Depending upon the selected configuration, an optional temperature output,
alarm output or analogue output can also be wired.
Connection cable
Matching connection cables with female connector M12x1 are available in a
various lengths as SIKA accessories. Shielded connection cables are not
necessary.
The connection cable should be fixed near the sensor. This can counteract a
negative influence on the measurement result in case of strong vibrations in
the environment.
IMPORTANT
Observe the temperature resistance of the connection cable at high media
temperatures.
If the maximum operating temperature is less than the media temperature, avoid
direct contact between the cable and the pipe.
Connection M12x1 plug
- Screw the coupling socket of the connection cable onto the plug of the VVX.
- Tighten the knurled nut of the coupling socket (do not exceed 1 Nm torque).
Earthing for VVX32 / VVX40
The metallic pipe section should be earthed if possible. A borehole M4x6.5 is
provided on the pipe section for this purpose.
3.1 Wiring
The pin assignment differs depending on the selected configuration of the
device.
Pin assignment:
Possible pin assignments:
Pin 1: +U
Pin 2: U B Flow • I Flow • R Temp • n.c. (not connected)
Pin 3: GND
Pin 4: Frequency • Alarm • IO-Link
Pin 5: UTemp • R Temp • without
- Wire the connection cable according to your device version and the pin assignment shown on the type plate.
Supply voltage:
3.1.1 VVX With Frequency Output
1: Not at 5 V.
2: Do not wire the push-pull switch outputs of multiple VVX devices in parallel.
*3: Recommended pull-up / pull-down resistance R L ~5 kΩ.
3.1.2 VVX With Temperature (Optional)
3.1.3 VVX With Analogue Output 0.5…3.5 V (Optional)
3.1.4 VVX With Voltage 0…10 V or
Current Output 4…20 mA (Optional)
3.1.5 Use of Frequency Output and Optional Functions
The frequency output can be combined with the optional functions. However, not
all combinations are possible.
In principle, only one function may be assigned to each of pins 2, 4 and 5.
Multiple assignments are not possible.
The wiring results from superimposing the circuit diagrams of the
corresponding functions, as shown in the following two examples.
3.1.6 VVX With Frequency Output and IO-Link
Commissioning and Measuring Operation
IMPORTANT
Before the first commissioning, check whether the measuring system has been
vented by flushing.
4.1 Measuring Operation
| Type | VVX15 | VVX20 | VVX25 | VVX32 | VVX40 |
|---|
Output signal characteristics
Flow frequency output:
Pulse rate / K-factor [1/l]r| 500| 200| 100| 100l| 50
optional:| 3…1,000| 2…800| 1…500| -/-| -/-
Signal shape| Square wave signal • duty cycle 50:50 NPN open collector (o.c.),
PNP o.c. or push-pull
Signal current| ≤ 20 mA
Flow analogue output 0.5…3.5 V (optional):
Output signal| 0.5…3.5 V 2
Scaling [l/min] 4| 2…40| 2…65 or 5…80| 7…150| 12…250| 22…400
Voltage rate [V / l/min]| 0.07895| 0.04762 or 0.04000| 0.02098| 0.0126| 0.0079
Signal current| ≤ 1 mA
Flow voltage and current output (optional):
Output signal| 0…10 V • 4…20 mA 3
Scaling [l/min] 4| 0…40| 0…80| 0…150| 0…250| 0…400
Voltage / current rate – 0…10 V [V / l/min]| 0.25000| 0.12500| 0.06667|
0.04000| 0.02500
– 4…20 mA [mA / l/min]| 0.40000| 0.20000| 0.10667| 0.06400| 0.04000
Signal current| ≤ 1 mA (Voltage output)
Working resistance| ≤ 125 Ω at max. 24 V signal voltage (Current output)
Temperature (optional):
· Sensor directly| Pt1000 (2-wire, class B) or NTC (R25=10.74 kΩ, B 0/100
3450)
· Analogue output| 0.5…3.5 V 2 corresponds to 0…90°C with (Pt1000 5 or NTC
6)
2) Resolution 7 bit or 10 bit (depending on version).
3) Resolution 12 bit.
4) other scales possible.
Type| VVX15| VVX20| VVX25| VVX32| VVX40
---|---|---|---|---|---
IO-Link:
IO-Link specification| Version 1.1
IO-Link Device ID| 2
Transmission type| COM2 (38.4 kBaud)
Ready for operation| 2 seconds after supply voltage is applied
Min. cycle time| 103 ms
SIO mode| Yes
Profiles| Smart Sensor, Device Identification, Device Diagnosis
SDCI standard| IEC 61131-9
Required master port| Class A
Process data analogue| 3
Download IODD device description| https://www.sika.net
or https://ioddfinder.io-
link.com
Temperature (optional):
· Sensor directly| Pt1000 (2-wire, class B) or NTC (R25=10.74 kΩ, B 0/100
3450)
· Analogue output| 0.5…3.5 V 2 corresponds to 0…90°C with (Pt1000 5 or NTC
6)
2) Resolution 7 bit or 10 bit (depending on version).
3) Resolution 12 bit.
4) other scales possible.
5) Dual slope measurement method with basic accuracy ±0.5 K.
6) Dual slope measurement method with basic accuracy ±1.0 K.
4.1.1 Flow Measurement
VVX with frequency output:
Depending on the version, the VVX provides a flow-proportional NPN, PNP or
push-pull square-wave signal.
The frequency of the frequency output changes with the flow (→ Fig.). VVX with
analogue, voltage or current output (optional):
The output of the VVX is either the voltage U Flow or the current I Flow .
The output signal is proportional to the measured flow. The scaling of the
output is indicated on the type plate and on p. 25.
4.1.2 Temperature Measurement (Optional)
The temperature is measured by an additional sensor RTemp integrated into the
measuring tube.
Depending on the version, this is an NTC or Pt1000.
For the VVX with analogue output (0.5…3.5 V), the voltage signal U-Temp can
also be measured. The scaling of the output is indicated on the type plate and
on p. 25.
On-Site Test
VVX with analogue output 0.5…3.5 V
- Connect the supply voltage (→ p. 23).
- Use a digital multimeter to check whether the supply voltage is present at pin 1 and pin 3.
- Check the voltage output (pin 2 and pin 3) with a digital multimeter:
- Without flow, the voltage output should be between 0.3…0.5 V.
- For a flow rate in the measuring range (see type plate), the voltage output should be between 0.5…3.5 V depending on the flow rate.
Disposal
In accordance with Directives 2011/65/EU (RoHS) and 2012/19/EU (WEEE)*, the
device must be disposed of separately as electrical and electronic waste.
NO HOUSEHOLD WASTE
The device consists of various different materials. It must not be disposed of
with household waste.
-
Take the device to your local recycling plant
or -
return the device to your supplier or to SIKA.
-
WEEE reg. no.: DE 25976360
Technical Data
The technical data of customised versions may differ from the data in this
operating manual.
Please observe the information specified on the type plate.
7.1 Characteristics VVX
| Type | VVX15 | VVX20 | VVX25 | VVX32 | VVX40 |
|---|
Electrical characteristics
Supply voltage
• Standard
• Voltage / Current output 0…10 V / 4…20 mA| 8…30 VDC or 5 VDC ±5%
12…24 VDC
Current consumption
• Frequency / Analogue output| < 15 mA
Electrical connection| 5-pin-plug M12x1 or 4-pin plug M12x1
Degree of protection (EN 60529)| IP65 1 and IP67 1
Connecting cable (Accessory)| Female connector M12x1 with cable
Process variables
Medium to measure| Water and aqueous solutions
Temperature range:
– Medium
– Ambient| -20…90 °C (non-freezing)
-20…70 °C
Nominal diameter| DN 15| DN 20| DN 25| DN 32| DN 40
Inner diameter| Ø 13 mm| Ø 19 mm| Ø 25 mm| Ø 32 mm| Ø 40 mm
Nominal pressure| PN 10| PN 16
Process connection| G ¾ ISO 228
male| G1 – ISO 228
male • Quick-Fasten| G 1¼ ISO
228 male| G 1½-ISO
228 male| G 2-ISO 228
male
*1) Only with attached coupling
7.2 Materials in Contact With Media
| Type Component | VVX15 • VVX20 • VVX25 | VVX32 • VVX40 |
|---|---|---|
| Tube | PPS | |
| 40 % glass fibre reinforced | Brass CW617N-DW | Stainless steel 1.4581 |
| Sensor | ETFE or PFA | |
| O-rings | EPDM | |
| Immersion sleeve | -/- | Brass CW724R |
| Bluff body | -/- | PPS |
40 % glass fibre reinforced
7.3 Dimensions
Dimensions [mm]| h| h1| D1| D2| l1| l2|
G| Gz| ⎔*
---|---|---|---|---|---|---|---|---|---
Threaded version
VVX15| 40| 13| | | 16.5| 80| G ¾| M12 x 1| 19
VVX20| 43| 13| | | 16.5| 100| G 1| M12 x 1| 24
VVX25| 46| 13| | | 16.5| 95| G 1¼| M12 x 1| 30
VVX32| 49.6| 13| | | 18| 100| G 1½| M12 x 1| 36
VVX40| 53.6| 13| | | 18.2| 110| G 2| M12 x 1| 46
QuickFasten
VVX20| 43| 13| 31.8| 44| 13.5| 100| | M12x1| 24
SIKA
Systemtechnik GmbH
Struthweg 7–9
34260 Kaufungen / Germany
+49 5605 803-0
+49 5605 803-555
info@sika.net
www.sika.net
© SIKA • Ba_VVX • 10/2023
References
- SIKA » Clevere Mess- & Kalibriertechnik seit 1901
- IODDfinder
- SIKA » Clevere Mess- & Kalibriertechnik seit 1901
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