Systec deltawaveVER2 User manual

deltawaveVER2 Technical Reference and Instruction Manual
28.07.2021 Version 1.2
deltawaveVER2
deltawaveVER2 LEAN
User Manual for XUMB2 // LEAN
„multipath ultrasonic transmitter flowmeter“

deltawaveVER2//LEAN Technical Reference and User’s Manual
systec Controls Mess- und Regeltechnik GmbH Rev. 1.2
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Content
1deltawaveVER2 Description 4
1.1 Measurement principle 4
1.2 Applicable Standards 4
1.3 Measurement Accuracy 4
1.4 Specialised applications 5
2Specifications 6
2.1 Sensors 6
2.2 Evaluation unit 6
2.2.1 Acoustic path 6
2.2.2 Analogue inputs for water level sensors 6
2.2.3 Display with buttons 7
2.2.4 Analogue outputs 7
2.3 Cable for ultrasonic transducers 7
2.4 Certifications 8
2.4.1 Safety standards and EMC guidelines 8
2.5 Interface specifications (VER2 and VER2 LEAN) 10
2.5.1 Analogue inputs 10
2.5.2 Analogue outputs 10
2.5.3 Relay outputs 10
2.5.4 Pulse outputs 10
2.5.5 USB interface 10
2.5.6 RS232 interface 10
2.5.7 RS485 interface 10
3Flow calculation 11
3.1 Calculation algorithms 11
3.1.1 In “Partially filled/filled conduits, open channel” mode 11
3.1.2 Crossing paths 15
3.1.3 In “Full conduit” mode 15
3.2 Water level measurement 15
4Installation of the electronic unit 16
4.1 Electrical connection 16
4.2 Power supply (AC) 16
4.3 Ultrasonic board (only VER2) 17
4.4 Switch-Configuration (VER2) 18
4.5 Connector Board (only LEAN) 19
4.6 Connection hints (LEAN) 20
4.7 Function of the relay (LEAN) 20
4.8 Parameterization of the pulse output (LEAN) 21
4.9 Parameterization of the deltawaveLEAN pulse output hardware (LEAN) 21
4.9.1 Operating mode 1: High Side (PNP-Switch) (LEAN) 22
4.9.2 Operating mode 2: LOW Side (NPN-Switch) (LEAN) 23
4.9.3 Operation Mode Push-Pull 24
4.10 Connecting the Ultrasonic Transducers 25
4.10.1 Connection in areas liable to contain explosive atmospheres 25
4.11 I/O board (VER2) 26
4.12 Connection of water level measuring devices to the analogue inputs 27
4.13 Connection to the analogue outputs 27
4.14 Handling with Parameter-Files 27
4.14.1 Activating a transferred parameter file 27
4.14.2 Downloading an active parameter file from deltawaveVER2 to USB memory stick 27
5User-defined settings 28
5.1 General information on software use 28
5.1.1 Creating a new parameter file 28
5.1.2 Loading a new parameter file 28
5.1.3 Language selection 28
5.2 System configuration 29
5.2.1 Definition of existing hardware 29
5.3 Section configuration 30
5.3.1 Geometric definition of your conduit (drain) 33
5.3.2 not activated 33
5.3.3 open channel 33
5.3.4 “Define sampling points” sampling point editor 34
5.4 Path configuration 36

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5.4.1 The expert menu 38
5.5 Level measurement configuration 42
5.6 Configuration of external speed sensor 42
5.7 Analogue Output Configuration 45
5.8 Digital Output Configuration 46
5.8.1 Constant Values 46
5.8.2 Counts 46
5.8.3 Section Alarm 47
5.8.4 Min-Alarm, Max-Alarm, Min-Max Alarms 47
5.9 Basic Settings Configuration 48
5.10 Medium Configuration 48
5.11 Basic parameter configuration 49
5.11.1 Minimal Sensor Surcharge 49
5.11.2 Low Flow Cut Off 49
5.11.3 Low Level Cut Off 49
5.11.4 Temperature offset 49
5.11.5 Damping 50
5.11.6 Max. level 50
5.11.7 Path substitution 50
5.11.8 Minimum number of func. paths 51
5.12 Dry weather flow configuration 51
5.13 Dry weather flow configuration with Manning-Strickler 52
5.13.1 Using individual discharge curve 52
5.14 Signal plausibility 54
5.14.1 Min. and max. velocity 54
5.14.2 Min. signal quality 54
5.14.3 Min. and max. flow speed 54
5.15 Creating the parameter file 55
6Operation and Display 56
6.1 Splash-Up-Screen 56
6.2 Masurement (section) Screen 56
6.2.1 Section status 56
6.2.2 Sektion alarm 56
6.3 MAIN-Screen 57
6.4 Diagnosis-Screen 57
6.5 Oszilloscope-screen 58
6.6 I/O-Screen 59
6.7 Analog-Calibration-screen 59
6.8 Units Screen 60
6.9 Service-Screen 60
6.10 System-Setup-Screen 61
7Contact 63
8Appendix 64
8.1 Weighting of the paths with filled cross-sections in accordance with ISO60041 (IEC41)
64
8.1.1 Path arrangement and Path weights for filled round conduits 64
8.2 The RS232 Interface 66
8.2.1 General 66
8.2.2 Data which can be transferred via RS232 66
9EG -Declaration of Comformity 67
10 References 69

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1 deltawaveVER2 Description
The deltawaveVER2 ultrasonic multimeter was developed specially for flow measurement of fluids in
pipes, drains and sewers with a width of 0.2m –100m. Measurements can take place in pressurised
pipes up to 100 bar and under highly variable levels.
1.1 Measurement principle
Measurement of the flow speed is carried out at several levels according to the ultrasonic transit time
method principle (time-of-flight). A big advantage of the transit time method is the absolute
determination of the mean flow rate between two fixed sensors. This makes complicated and
questionable calibrations unnecessary.
1.2 Applicable Standards
Partially Filled Conduits: ISO 6416
Filled Conduits: IEC41 / ASME PTC 18
1.3 Measurement Accuracy
To prevent errors caused by sound velocity measurement of the medium to be measured, both the
duration difference and the absolute duration of the ultrasound signals are determined in the flow
velocity calculation.
The achievable measuring precision depends on the number of measuring paths used and the inflow
conditions. The following table gives an overview of the maximum measuring deviations depending on
the number of measuring paths. With shortened inflow routes the use of crossed paths is
recommended, i.e. two intersecting paths are installed on one path plane.
Accuracy in % of the current flow value under different conditions
6 (12) path, pressurised pipe, 10D (<5D) inflow
+/- 0.4 % of flow rate *
4 (8) path, pressurised pipe, 10D (<5D) inflow
+/- 0.5 % of flow rate *
2 (4) path, pressurised pipe, 10D (<5D) inflow
+/- 1.0 % of flow rate *
6 (12) path, partly filled pipe, 10D (<5D) inflow
+/- 1.0 % of flow rate *
4 (8) path, partly filled pipe, 10D (<5D) inflow
+/- 2.0 % of flow rate *
2 (4) path, partly filled pipe, 10D (<5D) inflow
+/- 3.0 % of flow rate *
* For flow velocities >0,003m/s
2(4)-path installation in pressure pipe
4(8)-path installation in pressure pipe
6(12)-path installation in pressure pipe

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1.4 Specialised applications
deltawaveVER2 can be used in spaces and areas liable to contain explosive atmospheres in
compliance with the relevant regulations.
The system can be converted to run on batteries.
A variety of sensor forms and materials permit use under heavy mechanical load and in
aggressive media with pH values from 3.5 to 10.

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2 Specifications
2.1 Sensors
Temperature range: operating temperature 0 C to 50 C
ambient temperature -18 C to 65 C
Pressure range depending on model see datasheets
Water quality pH 3.5 to 10
Solid materials 0 to 2000 ppm (duration)
Frequency range 200 kHz-2MHz
Sensor power approx. 90Vpp
2.2 Evaluation unit
Power supply evaluation unit 100 to 240VAC
50 Hz to 60 Hz, 1.8A
24 VDC (alternative)
Temperature range Ambient Temperature -20C to 60C
With heating -40C to 60C
Dimension VER2 400 x 300 x 155 mm (wxhxd)
Dimension VER2 LEAN 260 x 240 x 120 mm
Weight VER 2 9.0 kg
Weight VER 2 LEAN 1.3 kg
Protection class VER 2 IP 66
Protection class VER 2 LEAN IP 65
2.2.1 Acoustic path
Up to 12 (16 if no I/O board required) paths distributed across up to 4 measuring points, depending on
the number of ultrasonic boards (4 paths / board)
Standard range 0.2m to 40m
Extended Range (on request) up to 150m
2.2.2 Analogue inputs for water level sensors
The system provides 4 analogue inputs per I/O board to which independent water level sensors can
be connected. The deltawaveLEAN can handle with two paths
Input range with 100resistance 4 mA to 20 mA
Maximum resistance 250
Maximum, relative voltage to earth 20V DC
Maximum voltage 240V rms
Power supply for external sensors + 24V DC max. 1A

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2.2.3 Display with buttons
Graphic display with 8 buttons on the side
320 x 240
Back Light
2.2.4 Analogue outputs
The system provides one I/O-Board
2x 4mA to 20mA active or passive
Max. load 500 10 V
Resolution 0.005 mA (12bit)
Precision 0.02 mA or 0.1 % of the measuring range final value
Overvoltage protection 30 V DC
2 relays (VER2 LEAN 1 relay)
Breaking capacity 0.5 A , 110 V DC
Break time 40 ms
Insulation voltage 2000 V AC
2 Impulse outputs
2.3 Cable for ultrasonic transducers
Double-shielded RG58 Triaxial cable
Cable connections of more than 100m in length should be clarified in advance with systec Controls.
Cables should be broken into pieces only after consulting your systec dealer to avoid signal
interference (echoes, attenuation).
The cables of two corresponding ultrasonic transducers should be the same length to avoid signal
propagation time differences.

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2.4 Certifications
2.4.1 Safety standards and EMC guidelines
The deltawaveVER2 Ultrasonic Multimeter has been designed and constructed in accordance with the
following guidelines and standards.
Directive 2014/35 / EU Low Voltage Directive
Directive 2014/30 / EU Electromagnetic compatibility
Generic standards - Emitted interference (emission)
DIN EN 61000-6-3, VDE 0839-6-3: 2011/09, (B1: 2012-11) Residential area, business and commercial
area as well as small businesses
DIN EN 61000-6-4; VDE 0839-6-4: 2011-09 Industry
Standards for EMC measurement regulations
DIN EN 55022; VDE 0878-22: 2011-12, B1: 2016-08: (CISPR 22: 2008 mod.) Antenna 30Mhz - 6Ghz
Information technology equipment - Radio disturbance characteristics - Limits and methods of
measurement
DIN EN 55011; VDE 0875-11: 2011-04, A1: 2015-11 Antenna 30Mhz - 6Ghz
Industrial, Scientific and Medical High Frequency Devices (ISM Devices) -
DIN EN 55014-1 VDE 0875-14-1: 2012-05, A1: 2016-03 Pliers 30 Mhz - 300Mhz Interference Power
Electromagnetic compatibility - Requirements for household appliances, power tools and similar
electrical appliances - Part 1: Emitted interference
Generic standards - Immunity
DIN EN 61000-6-1 VDE 0839-6-1: 2016-05 Residential area, business and commercial area as well
as small businesses
DIN EN 61000-6-2 VDE 0839-6-2: 2016-05, industrial sector
Product family standards for immunity
DIN EN 55014-2 VDE 0875-14-2: 2016-01 Electrical equipment (household appliances and power
tools) Immunity requirements. CISPR 14-2
DIN EN 55024 VDE 0878-24: 2016-05, Information technology equipment.
Standards for EMC measurement regulations
DIN EN 61000-4-2 VDE 0847-4-2: 2009-12: Electrostatic discharges ESD
DIN EN 61000-4-3 VDE 0847-4-3: 2011-04: High Frequency Electromagnetic Fields (HFF)
DIN EN 61000-4-4 VDE 0847-4-4: 2013-04: Fast, conducted transients (burst)
DIN EN 61000-4-5 VDE 0847-4-5: 2015-03: Surges
DIN EN 61000-4-6 VDE 0847-4-6: 2014-08: Induced high-frequency fields, 150kHz - 80Mhz
DIN EN 61000-4-8 VDE 0847-4-8: 2010-11: Magnetic fields with energy-related frequencies
DIN EN 61000-4-11 VDE 0847-4-11: 2005-02: Voltage dip, short-term interruption, voltage fluctuation

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2.4.2 2.4.2 Ex approval
Ex protection approvals
In particular, ultrasonic transducers with Ex approval for Zone 1 (500 kHz, type XUW-PC5- ...) and
Zone 2 (type UW05 ..... EX1) are available on request. The ultrasonic transducers are approved for Ex
zone 1 or 2 according to DIN EN 60079-0 and DIN EN 60079-18
II 2 G Ex mb IIB T6 (Zone 1)
II 3 G Ex mc IIB T6 (Zone 2)
The ultrasonic transducers are marked as shown in Figure 1 and Figure 2 Nameplate for ultrasonic
transducers with Ex approval Zone 2, the operating temperatures must not fall below the range -30 ° C
to + 60 ° C or -20 to + 60 ° C
Picture 1 Transducers for use in Ex zone 1 –name plate
Picture 2 Transducers for use in Ex zone 2 –name plate
Attention: The transducers must be operated in combination with a deltawaveVER2 electronic unit and
are not allowed to operate with any other device.
deltawave transducer (Ultraschallwandler)
Type:XUW-PC5-…..
SerNo: XX-XX-XX
Baujahr:XXXX
-30°C…60°C / IP69 / 10barü
CE 2004
II 2G Ex mb IIB T6
Certificate-No.: EPS 09 ATEX 1 170 X
deltawave transducer (Ultraschallwandler)
Type:UW05….EX1
SerNo: XX-XX-XX
Baujahr:XXXX
-20°C…60°C / IP69 / 10barü
II 3G Ex mc IIB T6

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2.5 Interface specifications (VER2 and VER2 LEAN)
2.5.1 Analogue inputs
4x 4-20 mA standardised signals can be connected to the analogue inputs. The potential difference of
the signal terminals to the device earth must not exceed 20 V.
The I/O board provides a maximum of 24 V max. 1 for passive water level sensors.
The I/O board inputs and outputs can be switched actively or passively with micro-switches
Input signals smaller than the start of the measurement range and larger than 21mA are evaluated as
defective.
2.5.2 Analogue outputs
The assigned variable is represented by a 4 -20 mA standard signal at the active analogue outputs.
The output can be assigned to the outflow, the mean flow rate, the water temperature or various
variables dependent on it. The measuring ranges can be freely configured by entering the full
measuring scale.
If a variable is evaluated as defective the analogue signal is reset to <3.6 mA. For values outside the
full measuring scale the output assumes the relevant extreme value (3.84 or 20.5mA).
2.5.3 Relay outputs
The existing relays (two per I/O board) can be assigned to the various sections and variables. The
relays have both an NC and an NO connection. Functions such as the exceeding or falling short of
outflow, water level or outflow total limit values or malfunction alarm can be allocated to the relays.
2.5.4 Pulse outputs
The existing pulse outputs (two per I/O board) can be assigned to the various variables. Functions
such as metering pulse or throughput can be allocated to the pulse outputs.
2.5.5 USB interface
The USB interface allows the transmission of parameterization data as well as the reading out of data
logger data. In addition, files for updates can be copied to the deltawaveVER2 via the USB interface.
You can use a (supplied) USB cable for this purpose.
2.5.6 RS232 interface
deltawaveVER2 provides a serial interface. For using this feature, an extra module is required and can
be retrofitted any time.
2.5.7 RS485 interface
deltawaveVER2 provides an RS485 interface that can be used as a MOD bus and MBus interface. For
using this feature, an extra module is required and can be retrofitted any time. For using this feature,
an extra module is required and can be retrofitted any time.

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3 Flow calculation
deltawaveVER2 can be configured with up to 8 (2) acoustic paths. The configuration of a measuring
point is defined by means of a parameter set.
The definition of the measuring point includes in particular its geometric and hydraulic description, the
assignment of inputs and outputs and the specification of calculation settings.
The definition of a measurement path includes, in particular, the specification of the sensor position,
the path length, the path angle and details of the sensor used.
3.1 Calculation algorithms
3.1.1 In “Partially filled/filled conduits, open channel” mode
Depending on the water level, the sensor position and possible individual sensor pair malfunctions one
of five different calculation processes is automatically selected.
1. The outflow is set to 0 if the water level is below a certain value (user input via Parametersoftware,
see chapter 5.11).
2. The outflow is determined via the Manning-Strickler equation if no path is working below a defined
water level.
3. If only one path is in operation the throughput is calculated according to single path integration.
4. If several paths overflow the outflow is calculated according to the Mean Section, Mid Section or
Smart Section method (user-defined). Both calculation criteria are described in ISO6416.
5. When the pipe is full up deltawaveVER2 automatically calculates according to the calculation
model for filled pipes. The calculation criterium for this is ISO60041 (IEC41).
1. The outflow is set to 0
If flow rates for low levels are not to be recorded this can be set by entering the “LowLevelCutOff”
parameter.
2. Manning-Strickler equation
Outflow calculation according to the Manning-Strickler equation uses the level measurement to
calculate the outflow. Manning Strickler is used if no path measurement works below a defined level.
vm= nman * rhy2/3 * Sman1/2 (equation 1)
vm: mean flow rate [m/s]
nman: Rate coefficient according to Strickler [m1/3 /s]
rhy: Hydraulic radius [m] is calculated by deltawaveVER2
Sman: energy drop (slope) [-]

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The following figures must be parametrised:
Surface roughness coefficient nman
The surface roughness coefficient depends on the composition of the channel. The following table
gives an overview for typical surfaces.
Channel types n man
Earth
Earth channels in firm m aterial , smooth 60
Earth channels in firm sand with some clay or gravel 50
Earth channels with a floor of sa nd a nd gravel with rendered embankments 45–50
Earth channels made of fine 10 /20/30 mm gravel 45
Earth channels made of medium-size 20/ 40/60 mm gravel 40
Earth channels made of rough 50/ 100/150 mm gravel 35
Earth channels made of large lumps of clay 30
Earth channels made with rough stones 25–30
Earth channels made of s an d, clay o r gravel, heavily overgrown 20–25
Rock
Medium rough rock excavation 25–30
Rockexcavatedwithcarefulblasting 20–25
Very rough rock excavation, large irregularities 15–20
Masonry
Channels made of brickwork, bricks, also clinker bricks, well jointed 80
Rubble masonry 70–80
Brickwork channels (normal) 60
Normal (good ) rubble masonry , hewn stones 60
Rough rubble masonry, stones only roughly hewn 50
Broken stone walls, rendered embankments with sand and gravel floor 45–50
Concrete
Smooth cement finish 100
Concete using steel forms 90–100
Smooth rendering 90–95
Smoothed concrete 90
Good formwork , smooth undamaged rendering , smooth concrete 80–90
Concrete produced with wood formwork , without rendering 65–70
Compressed concrete with smooth surface 60–65
Old concrete , uneven surfaces 60
Concrete shells with 150-200 kg c emen t per m
3
, depending on age and type 50–60
Rough concrete lining 55
Uneven concrete surfaces 50
Wooden
New smooth channel 95
Planed, well-jointed boards 90
Unplaned boards 80
Older wooden channel 65–70
Metal
Smooth pipes with countersunk rivet heads 90–95
New cast iron pipes 90
Riveted pipes, rivet not countersunk , overlapped several times in the circumference 65–70
Natual
Natural riverbeds with firm floor , without irregularities 40
Natural riverbeds with moderate bed load 33–35
Natural riverbeds , weed-infested 30–35
Natural riverbeds with rubble and irregularities 30
Natural riverbeds , strong bed load 28
Wild streams with rough rubble (head-sizedstones ) with resting bed load 25–28
Wild streams with rough rubble , with moving bed load 19–22
Table 1 roughness coefficients for different channel materials
Sman
The energy drop (slope) can be calculated from the channel gradient. Sman = h/l
h
l

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In practice both coefficients Sman and nman can be very precisely calculated from the flow
measurement at normal levels with ultrasound measuring. Level and flow are stored in the
deltawaveVER2 data logger with sufficient levels and then both Manning Strickler coefficients for dry
weather flow are calculated with a curve fit, e.g. in Excel. Please ask your systec dealer for making the
curve fit. The transferability of coefficients thus calculated on to the dry weather flow is very good at
many measuring points.
3. Single path interpolation
If just one single ultrasound path is in operation (or two intersecting paths), the flow speed calculation
is performed according to ISO 6416. For this a calibration factor is calculated from the relative path
height (path height hp/total level h) from which the mean speed can be calculated.
4. Multiple path interpolation
If several paths or several intersecting paths are in operation the flow is calculated according to a
multiple path interpolation. Two flow equations are available, the mean section method or the mid-
section method. Both models are described in detail in ISO 6416. The standard method is the mid-
section method. With this method deltawaveVER2 forms sub-segments, calculates their mean speed
and cross-sectional area and integrates therefrom the total flow in cross-section.
With the mid-Section method a weighting factor kR must be entered which takes into account friction
on the channel floor. For extremely rough channels the value become a minimum of 0.2, for “friction-
free”channels the value is 1. The table below shows reference values.
A weighting factor for the channel floor (kB, for standard values see the table below) must also be
entered for the mean section method and in addition a weighting factor for the uppermost segment
(kS). With the mean section method the speed at the surface of the uppermost sub-segment is
calculated by interpolation. kS indicates how strongly this value is taken into account in the calculation.
A value between 0 (no influence) and 1 (complete influence) can be selected. A standard value is 0.1.
The influence of kS on the measurement result is especially small if several segments are working (3
or more).
hp
h
Lowest sub-segment
2nd sub-segment
Uppermost (nth) sub-segment
... sub-segment
Ultrasound path

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Table 2 roughness coefficients for calculation models mean-section and mid-section
1. Filled pipe in “Partly-filled pipe” mode
Channel types
kR
kB
Earth channels
Earth channels in solid material, smooth
0,58
0,48
Earth channels in firm sand with some clay or gravel
0,52
0,38
Earth channels with floor of sand and gravel with rendered embankments
0,52
0,38
Earth channels of fine 10/20/30 mm gravel
0,50
0,32
Earth channels of medium-sized 20/40/60 mm gravel
0,47
0,27
Earth channels of rough 50/100/150 mm gravel
0,44
0,22
Earth channels of large lumps of clay
0,41
0,16
Earth channels, made of rough stones
0,40
0,13
Earth channels of sand, clay or gravel, heavily overgrown
0,37
0,08
Rock channels
Medium rough rock excavation
0,40
0,13
Rockexcavatedwithcarefulblasting
0,37
0,08
Very rough rock excavation, large irregularities
0,34
0,03
Masonry channels
Channels made of brickwork, bricks, also clinker bricks, well jointed
0,69
0,70
Rubble masonry
0,66
0,64
Channels made of brickwork (normal)
0,58
0,48
Normal (good) rubble masonry, hewn stones
0,58
0,48
Rough rubble masonry, stones only roughly hewn
0,52
0,38
Broken stone walls , rendered embankments with sand and gravel floor
0,51
0,34
Concrete channels
Smooth cement finish
0,80
0,91
Concrete using steel forms
0,78
0,86
Smooth rendering
0,76
0,82
Smoothed concrete
0,75
0,80
Good formwork, smooth undamaged rendering, smooth concrete
0,72
0,75
Concrete produced with wood formwork, without rendering
0,62
0,56
Compressed concrete with smooth surface
0,62
0,56
Old concrete, uneven surfaces
0,58
0,48
Concrete shells with 150-200 kg cement per m3 , depending on age and type
0,55
0,43
Rough concrete lining
0,55
0,43
Uneven concrete surfaces
0,52
0,38
Wooden channels
New smooth channel
0,78
0,86
Planed, well-jointed boards
0,75
0,80
Unplaned boards
0,69
0,70
Older wooden channel
0,62
0,56
Metal channels
Smooth pipe with countersunk rivet heads
0,76
0,82
New cast-iron pipes
0,75
0,80
Riveted pipes, rivet not countersunk, overlapped several times in the
circumference
0,62
0,56
Natural watercourses
Natural riverbeds with firm floor, without irregularities
0,47
0,27
Natural riverbeds with moderate bed load
0,43
0,21
Natural riverbeds, weed-infested
0,43
0,20
Natural riverbeds with rubble and irregularities
0,41
0,16
Natural riverbeds, strong bed load
0,40
0,14
Wild streams with rough rubble (head-sized stones) with resting bed load
0,40
0,13
Wild streams with rough rubble, with moving bed load
0,36
0,07

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For this case the system can determine the flow with the same process as in “Filled pipe” mode.
3.1.2 Crossing paths
With shortened inflow routes we recommend the use of crossing paths Paths which are installed in
one section at the same path height are automatically recognised by deltawaveVER2 as crossing
paths. The measured velocities of two crossing paths are averaged. This reduces the influence of so
called crossflow effects on the accuracy
Crossflows can arise with shortened inflow routes, e.g. when using deltawaveVER2 behind a bend.
This means that the flow vectors are not yet parallel again to the channel or pipe axis after such
disruptions. The influence of these crossflows can be compensated by the use of intersecting paths.
3.1.3 In “Full conduit”mode
In this mode your pipe/channel is always full and the flow is calculated from the product of the average
flow rate and the pipe cross-section. The average flow rate arises from the measured individual rates,
taking into account a position-dependent weighting factor.
The optimum positions for the ultrasonic transducers are stated in the IEC41 and suitable weighting
factors are to be found in the chapter 8.1)
3.2 Water level measurement
Exact water level measurement is decisive for precise flow rate measurement in an open channel or
partly filled pipe. For safety reasons up to two independent water level measurements can therefore
be allocated to each section.
In normal operation the average of the two level measurements is calculated. If one of the level
measurements should fail, the second measurement is used. In this case an alarm relay can also be
switched.

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4 Installation of the electronic unit
The measuring device should be fitted vertically on a wall or a mounting. To guarantee stability the
load bearing capacity should not be less than 30 kg.
The location should be chosen so that the evaluation unit is not more than 100m from the measuring
point, as the cables are limited in length. (systec Controls should be consulted about larger distances.)
The converter cables can be extended in principle. We recommend a RG58 (Triaxial) cable as an
extension. The cable insulation must be suitable for the operating location. When extending cables
care must be taken that the insulated cable ends are kept as short as possible and the earth and both
inner conductors are polarised correctly. We recommend the use of a suitable housing for the
extension. Suitable housings should be used if the cable extension is to take place in an area liable to
contain explosive atmospheres (Eex e or Eex d)
The evaluation unit must be within reach of power supply and data transfer cables.
The evaluation unit itself should be hung up outside the area liable to contain explosive atmospheres.
If this is not possible pressure-sealed housings are available for the evaluation unit (please consult
systec Controls).
To avoid interference with the measuring signals from electro-magnetic radiation all input and output
cables should be laid in shielded cable channels separated in particular from power electronics cables.
4.1 Electrical connection
The following connections must be provided depending on equipment and device configuration.
Power supply for the electronic part
Sensor cable (required length can be stated with your order)
Cable for water level sensors
Cable for analogue outputs
Cable for alarm contacts
Cable for digital outputs
Cable for interfaces ( USB / RS232 RS485)
4.2 Power supply (AC)
The measuring device power consumption depends on the path length (see table).
Cables with a cross-section of at least AWG 16 or 0.75mm2should be used for the power supply. The
power supply should be suitably protected with safety cut-outs (min 1.8A). The power supply cables
are connected via an angled rubber connector (supplied).

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4.3 Ultrasonic board (only VER2)
The ultrasound board allows the installation of up to four pairs of ultrasonic transducers, ie eight
individual ultrasound transducers. DeltawaveVER2 can be equipped with up to two ultrasonic boards.
If more than one ultrasound board is installed in deltawaveVER2, the ultrasound paths 1 to 4 are
located on the leftmost board and paths 5-8 on the right board.
When installing the ultrasound converter pairs there is an upstream sensor (code U) and the
downstream sensor (code D). The position results from the arrangement in relation to the flow
direction.
With multiple path installations it is recommended that Path 1 is installed as the bottom path and the
following paths then from bottom to top with subsequent numbering.
4.4 Connection terminals for inputs and outputs I/O (VER2)
Connection
Numbers
Designation
Relay, terminals 1 and 2:
The potential-free contact may be
loaded with a maximum of 45V AC /
DC and 0.25A.
Digital outputs, terminals 3 to 8:
The digital outputs can be connected
(with passive operation) up to a
maximum of 30VDC at 0.1A.
1
Relay (+)
2
Relay (-)
3
GND
4
Digital Output 1 (+)
5
Digital Output 2 (-)
6
GND
7
Digital Output 2 (+)
8
Digital Output 2 (-)
9
Analogue Output 1A (4..20mA)
The polarization of the analogue inputs
and outputs change when switching
from active and passive.
Active: A (-); B (+)
Passive: A (+); B (-)
10
Analogue Output 1B (4..20mA)
11
Analogue Output 2A (4..20mA)
12
Analogue Output 2B (4..20mA)
13
Analogue Input 1B (4..20mA)
14
Analogue Input 1A (4..20mA)
15
Analogue Input 2B (4..20mA)
16
Analogue Input 2A (4..20mA)
Connections Path 1-4
Connections Path 5-8
Number
Designation
Number
Designation
1
MUS1_CH1_UP (1U+)
1
MUS2_CH5_UP (1U+)
2
MUS1_CH1_UP (1U-)
2
MUS2_CH5_UP (1U-)
3
MUS1_CH1_DOWN (1D+)
3
MUS2_CH5_DOWN (1D+)
4
MUS1_CH1_DOWN (1D-)
4
MUS2_CH5_DOWN (1D-)
5
MUS1_CH2_UP (2U+)
5
MUS2_CH6_UP (2U+)
6
MUS1_CH2_UP (2U-)
6
MUS2_CH6_UP (2U-)
7
MUS1_CH2_DOWN (2 D+)
7
MUS2_CH6_DOWN (2 D+)
8
MUS1_CH2_DOWN (2 D-)
8
MUS2_CH6_DOWN (2 D-)
9
MUS1_CH3_UP (3U+)
9
MUS2_CH7_UP (3U+)
10
MUS1_CH3_UP (3U-)
10
MUS2_CH7_UP (3U-)
11
MUS1_CH3_DOWN (3D+)
11
MUS2_CH7_DOWN (3D+)
12
MUS1_CH3_DOWN (3D-)
12
MUS2_CH7_DOWN (3D-)
13
MUS1_CH4_UP (4U+)
13
MUS2_CH8_UP (4U+)
14
MUS1_CH4_UP (4U-)
14
MUS2_CH8_UP (4U-)
15
MUS1_CH4_DOWN (4D+)
15
MUS2_CH8_DOWN (4D+)
16
MUS1_CH4_DOWN (4D-)
16
MUS2_CH8_DOWN (4D-)
UP
DOWN

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4.5 Switch-Configuration (VER2)
SW1
Analogue Output 1
With the 8 red switches under the display, the outputs and inputs can
be switched between external and internal power supply.
Switch right: Internal power supply
Switch left: External power supply
SW2
Analogue Output 1
SW3
Analogue Output 2
SW4
Analogue Output 2
SW5
Pulse Output 1
SW6
Pulse Output 2
SW7
Analogue Input 1
SW8
Analogue Input 2

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4.6 Connector Board (only LEAN)
Term
Connection
Description
1
UP1
input for ultrasonic transducer measurement path 1
( + ) = red cable (core); ( –) = black cable (shield)
DWN1
UP2
input for ultrasonic transducer measurement path 2
( + ) = red cable (core); ( –) = black cable (shield)
DWN2
2
RS232 /
RS485
optional + retrofitted (Digital Interface board X1 & X2)
Data transmission via serial communication or Modbus and MBus
3
PT100 –1
Not in use
PT100 –2
4
REL
Relay connection, passive, potential-free
5
ANA 1 OUT
ANA 2 OUT
Analogue output 1: 4 ... 20mA Unit signal, 24VDC, active (optional passive) according to Namur NE43
(3.8-20.5 mA)
6
ANA 1 OUT
ANA 2 OUT
Analogue output 2: 4 ... 20mA Unit signal, 24VDC, active (optional passive) according to Namur NE43
(3.8-20.5 mA)
7
IMP 1
IMP 2
Digital output (open collector)
8
RESET
Hardware-Reset (Restart of the system)
9
USB
USB Interface (Mini-USB Type B), access to the integrated SD memory card
Windows XP or later versions detect the SD Card as mass storage medium
10
DIP 1 DO
DIP 2 DO
DIP Switch for configuring IMP1 and IMP2
NPN, PNP, push-pull, active / passive
11
PE N L1
V+ V-
Two power supply options available:
alternating current 90 ... 240 V / AC, direct current 18 ... 36 V / DC

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Alert
Voltage
source
deltawaveC
K1
4.7 Connection hints (LEAN)
To access the cable compartment of the deltawaveVER2 LEAN, please solve the two screws and
remove the cover plate:
Remove cover from cable compartment
Please always make sure to put the correct voltage to your deltawaveVER2 LEAN.
Improper supply voltage might seriously damage the flow transmitter.
You can check the type of power supply at the name plate, printed on right side of
enclosure of flow transmitter.
All in- and outputs (except relay) have defined potential on the internal devices
ground. For potential free operation of the in- and outputs additional hardware is
needed (with galvanic isolation). With the normal in- and output it is not possible!
The analogue in- and outputs are active ex works 24V/DC (could be set in
passive mode by systec controls)
The maximum permitted load of the relay is 45V, 0,25A
Table 1: Recommendations for cable contacts
Terminal
designation
descripti
on
recommendation
X2
In-/
Output
Cross-section:
0,5 - 4,0 mm²
Diameter:
0,8 - 2,3 mm
Contact length:
8,0 mm
X5
Power-
supply
Cross-section:
0,13 - 1,3 mm²
Diameter:
0,4 - 1,3 mm
Contact length:
6,0 mm
Figure 1: Cable assembly
4.8 Function of the relay (LEAN)
Your deltawaveVER2 LEAN is
equipped with a relay output. You
have the option to assign the output
of a function and a range.
For example, it is possible to couple
an alarm function to the output, e.g.
the sign of a certain minimum flow.
insolation
stripped cable
length
cross section
diameter