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Flowing Waters
Measurement Campaigns
WastewaterTreatment
Plant
ChannelNetworks
Industry
Applications & Solutions
Y O U R S P E C I A L I S T I N M E A S U R E M E N T T E C H N O L O G Y
The perfect solution for each application
Channel Networks 5 - 20
Wastewater Treatment Plant 21 - 36
Measurement Campaigns 37 - 52
Flowing Waters 53 - 56
Industry 57 - 59
This collection of applications is intendedto give you an overview on our fields ofoperation.If you should not find your application in thiscollection - please contact us.Our experienced application engineersgladly will assist you finding your solution.
Give us a call - Phone +49(0)7262-91 91-0
The NIVUS group is a worldwide leadingdeveloper, manufacturer and supplier ofmeasurement systems for the watereconomy.Our product range comprises measuringsystems for flow and level measurement.Furthermore we carry out demanding urbandrainage monitoring projects.
Channel Networks
Stormwater Treatment Facilities
Portable Measurements
Non-Portable Measurements
Seepage Water
Pump Stations and Lifting Facilities
Level Measurement In Pump Well page 8
Level Measurement Spiral Pump Control page 9
Flow Metering In Channel With Dry Weather Flume page 6
Measuring An Asymmetric Flow Profile page 7
Flow Measurement Overflow Multi-Chamber Stormwater Overflow Tank page 10
Overflow Volume On Trough page 11
Level And Overflow Measurement page 12
Tank Cleaning Control Using Only 1 Relay page 13
Flow Measurement Dump Seepage Water page 14
Flow Measurement To Create A Sewer System Masterplan page 15
Flow Measurement In Difficult Conditions page 16
Measurement Utilisation Channel Section page 17
Investigation Of Extraneous Water In Smaller Diameters page 18
Investigation Of Extraneous Water In Larger Diameters page 19
Temporary Overflow Measurement page 20
5
Application
Definition Of Task
Solution
• Accurate detection of dry weather discharge and combined water discharge
View of measurement placeView of measurement place
• A measurement system Type OCM Pro
has been used.
• To detect low volumes, the first sensor has
been installed in the dry weather flume.
Sensors 2 and 3 have been installed left
and right of the dry weather flume on the
side step. In combination with sensor 1
they detect flow velocities at higher levels
or the discharge of combined water.
Advantages:
• Straightforward programming due to pre-
set channel shapes.
• Utilisation of 2 analog outputs using
appropriate scales for dry weather and
rainy weather and hence high resolution of
readings.
Kanaln
etz
-SM
-OC
P_P
OA
-1-E
N / 2
7.0
4.2
009
Flow Metering In Channel With Dry Weather FlumeFlow Metering In Channel With Dry Weather Flume
• Segmented rectangular channel, 3 m width
• Part filled
• Rectangular channel made of concrete
• Channel with dry weather flume and side space
Installation principleInstallation principle
Reference ApplicationChannel Networks
Non-Portable Measurements
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
6
Application
Definition Of Task
Solution
• Detection of flow volume to wastewater treatment plant
• The measurement shall be as accurate as possible despite constantly fluctuating flow
conditions and varying flow profiles
View of measurement place and flow conditionsView of measurement place and flow conditions
• Providing highest measuring dynamics and
accuracy, a cross-correlation-based
system Type OCM Pro has been used.
By using 3 flow velocity sensors
simultaneously it is possible to detect and
to consider existing asymmetric flow
conditions.
• The sensors have been installed on the
channel bottom.
Advantages:
• Low installation costs
• Complies with requested accuracies by
utilising 3 velocity sensors
• Maintenance-free
Kanaln
etz
-SM
-OC
P_P
OA
-2-E
N / 2
7.0
4.2
009
Measuring An Asymmetric Flow ProfileMeasuring An Asymmetric Flow Profile
Installation principleInstallation principle
• Rectangular channel, 2.5 m
width
• Part filled
• Rectangular channel made
of concrete
• Fluctuating asymmetric flow
conditions
Reference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Channel Networks
Non-Portable Measurements
7
Definition of Task
Solution
• Well diameter 1.8 m
• Depth of well 6.5 m
• Pressure pipe installed in the centre
• Pump control in alternate duty assist mode
• Switching points at levels of 2 m and 4 m
• Maximum level report
• Dry run protection
• Transmission of levels to control system
• An ultrasonic measurement Type
NivuMaster Ultra has been used.
The implemented variable pump mode
provides a great number of options such as
the alternate duty assist mode desired by
customer.
• Obstacles on the sides of the sonic lobe
such as ladders, steps, cables, pipes,
pumps and other constructions can be
covered using the built-in agitator
avoidance.
Advantages:
• Non-contact
• Measuring and controlling in one unit
Pump well with two pumpsPump well with two pumps
Schematic diagram of two pumps in Schematic diagram of two pumps in
alternate duty assist modealternate duty assist mode
Level Measurement In Pump WellLevel Measurement In Pump Well
Application
Kanaln
etz
-PH
-NM
-1-E
N / 2
7.0
4.2
009
Channel Networks
Pump Stations and Lifting Facilities
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Reference Application
8
Definition of Task
Solution
• Wastewater lifting facility with three spiral
conveyors
• Delivery head approx. 9.00 m
• Non-contact level measurement for alternating control of spiral conveyors
• Redundant
• Panel mount enclosure unit
Inlet area of lifting facilityInlet area of lifting facility
Level Measurement Spiral Pump ControlLevel Measurement Spiral Pump Control
Application
Kanaln
etz
-PH
-NM
-2-E
N / 2
7.0
4.2
009
Channel Networks
Pump Stations and Lifting FacilitiesReference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Schematic diagram of a Schematic diagram of a
wastewater lifting facilitywastewater lifting facility
• An ultrasonic measurement transmitter
Type NivuMaster Ultra 5 panel mount
enclosure has been installed as non-
contact measurement. This unit not only
serves as alternating control for the spiral
conveyors, but also supplies min./max.
messages
• The redundant measurement is engaged
using an error message contact.
Advantages:
• The NivuMaster control has been set up by
the operator himself. This was to avoid
extensive re-programming of the PLC
system by third parties.
9
Application
Definition of Task
Solution
• Detection of overflow volumes to recipient
• Readings shall be transmitted to control system via analog and digital outputs
• High accuracy at varying overflow volumes per chamber
Measurement point to recipientMeasurement point to recipient
• Providing highest measuring dynamics and
accuracy, a cross-correlation-based system
Type OCM Pro has been used. By using 3
flow velocity sensors simultaneously it is
possible to detect and to consider existing
asymmetric flow conditions.
• The sensors have been installed on the
channel bottom. Protective metal sheets
prevent the sensors from being damaged.
Advantages:
• Low installation costs
• Complies with requested accuracies by
utilising 3 velocity sensors
• Maintenance-free
Kanaln
etz
-RB
A-O
CP
_P
OA
-1-E
N / 2
7.0
4.2
009
Flow Measurement Overflow Flow Measurement Overflow
MultiMulti--Chamber Chamber StormwaterStormwater Overflow TankOverflow Tank
• Rectangular channel, 6 m width
• Part filled
• Rectangular channel made of concrete
• Simultaneous overflow from several chambers
into one common channel
• Short calming section upstream of
measuring point
Installation principleInstallation principle
Reference ApplicationChannel Networks
Stormwater Treatment Facilities
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
10
Application
Definition Of Task
Solution
• Detection of overfall volume
• Creation of Q/H-characteristics for toothed sill according to DIN 19 558
• Forwarding of detected flow volumes to a process control system
• Compliance with accuracies required according to ATV-DVWK
• For this application 2 ultrasonic level meters
Type NivuMaster with 2 sensors each have
been used for average value measurement .
• Average values coming from the sensors
(combination of 2 sensors left and right of
overflow trough) are routed to an universal
transmitter (NivuCont). This unit converts the
average values into volumes (Q/H-
characteristic), summing the values
subsequently up as overflow total.
• The total volume output is sent to the process
control system (PCS) as analog signal.
Kanaln
etz
-RB
A-N
M_N
CP
-1-E
N / 2
7.0
4.2
009
• Stormwater basin with overflow sill
constructed as trough
• Overflow edge constructed as toothed sill
• No backwater from recipient
• Overflow into trough from both sides
• Total length of sill: 24 m
Overflow Volume On TroughOverflow Volume On Trough
Overflow sill as trough in basinOverflow sill as trough in basin
Schematic diagramSchematic diagram
Reference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Channel Networks
Stormwater Treatment Facilities
11
Definition of Task
Solution
• Stormwater overflow tank with cover
• Maximum overflow head 0.35 m
• Very low distance between weir crest
and ceiling (0.50 m)
• Detection of impoundage (beginning and end)
• Output of tank overflow (beginning, end and overflow volume)
• Reliable non-contact measuring at lowest distance between ceiling and maximum
water level
• An ultrasonic measurement transmitter Type
NivuMaster LF-5:2 has been installed.
Thanks to comprehensive programming
options and numerous outputs it is possible
to calculate and to output the parameters
"Tank Impoundage“, "Tank Overflow“ and the
overflow volume (as requested by German
ATV-DVWK organisation) by using only one
unit.
• Using an innovative tilted mirror allows to
install the ultrasonic sensor close to the
maximum water surface level.
Advantages:
• Saves time and costs since only one device
is required.
Ultrasonic level measurement with tilted mirrorUltrasonic level measurement with tilted mirror
Level And Overflow MeasurementLevel And Overflow Measurement
Application
Kanaln
etz
-RB
A-N
M-1
-EN
/ 1
4.0
3.2
009
Channel Networks
Stormwater Treatment FacilitiesReference Application
Schematic DiagramSchematic Diagram
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
12
Tank Cleaning Control Using Only 1 RelayTank Cleaning Control Using Only 1 Relay
Definition of Task
Solution
•
• Open stormwater overflow tank
• Depth 4.0 m
• Water jets as cleaning instruments
• The level shall be detected with a pressure measurement cell
• Up to 5 cleaning instruments (water jets) are to be controlled
• Tank cleaning control shall be implemented using only one transmitter
Schematic diagram of tank cleaning control Schematic diagram of tank cleaning control
• The level measurement has been
implemented using a transmitter Type
NivuCont Plus in connection with a 2-wire
pressure probe NivuBar Plus.
• The NivuCont controls the cleaning
instruments depending on level and trend
as well as within certain cycles.
Advantages:
• Cost-efficient tank cleaning using one relay
output.
• No PLC required – comprehensive PLC
programming through third parties was not
necessary.
Application
Kanaln
etz
-RB
A-N
CP
_N
BP
-1-E
N / 2
7.0
4.2
009
Devices usedDevices used
Channel Networks
Stormwater Treatment FacilitiesReference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
13
Application
Definition of Task
Solution
• In order to protocol the hydrology of a dump it is necessary to record the delivery of a
groundwater spring emerging within the dump area
• Spring water tending to mineral sedimentation
• Measuring shall be accurate, long-term stable and as low in maintenance efforts as possible
• The measurement had to be implemented within the area of an existing collector trough
without too much efforts
Measurement on V weirMeasurement on V weir
• Due to low flow volumes it was necessary to
use weir measurement according to Thomson
(V weir).
• The non-contact ultrasonic measurement
system Type NivuMaster is used to detect
overflow height.
• Collector trough and weir opening have been
constructed to obtain the best possible
accuracy.
Advantages:
• Maintenance is limited to regular visual
controls and occasional removal of
sedimentation.
• The replaceable weir plate allows adjustment
in case of higher water volumes.
Kanaln
etz
-SW
-NM
-1-E
N / 2
7.0
4.2
009
• Pipe diameter 0.2 m
• Part filled
• Pipe made of HDPE
• Maximum discharge flow rate 1.5 l/s
Measurement placeMeasurement place
Flow Measurement Dump Seepage WaterFlow Measurement Dump Seepage Water
Reference ApplicationChannel Networks
Seepage Water
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
14
Definition of Task
Solution
• Pipe diameter 0.5 m
• Part filled
• Pipe made of concrete
• High discharge dynamics
• Risk of sedimentation
• In order to create a sewer system masterplan it is necessary to record precipitation, flow,
level and impoundage through a minimum period of 3 months
• There is no power supply available at the measurement point
• Very high discharge dynamics can be expected from lowest filling levels up to impoundage
conditions. Pump effects (hydraulic bores) are expected.
• Data are forwarded in ASCII format
• Using the portable measurement system Type
PCM Pro with several sensors allows
measurements independent from mains power
supply through longer periods.
• High dynamics at the measurement point are
detected reliably thanks to 1-minute measuring
cycles.
• Data is saved on CF card in ASCII format.
Advantages:
• Combining various level sensors using different
measurement principles allows accurate
measuring in every situation.
• The standard data format enables the use of
data with any common evaluation application
without the need for special software.
Sensor installationSensor installation
Flow Measurement To Create A Flow Measurement To Create A
Sewer System Sewer System MasterplanMasterplan
Application
Kanaln
etz
-PM
-PC
P-3
-EN
/ 0
9.0
9.2
009
Combined use of various level sensors Combined use of various level sensors
Reference ApplicationChannel Networks
Portable Measurements
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
15
Application
Solution
• Drainage line of a recreation park with
0.3 m diameter
• Part filled
• Drainage line made of dilapidated concrete
• High discharge dynamics and turbulent discharge
due to upstream forwarding pump
• Ex zone 1
• Investigation of channel capacity and billing apportionment due to planned expansion of
recreation park
• Accurate detection of flow volumes to be capable of dimensioning the new wastewater line
to build
• The measuring system used shall be able to reliably handle the poor hydraulic conditions,
high discharge dynamics and the required measurement accuracy
• To compensate the poor hydraulic discharge
conditions, a portable measuring pipe Type NPP
has been inserted into the delivery pipe using an
inflatable balloon.
• The 90°elbow causes full filling of the pipe
providing best possible measurement conditions.
• Flow velocity has been detected using ultrasonic
cross correlation.
• Power supply of the system and data storage have
been implemented by using the battery-powered
PCM Pro transmitter.
Advantages:
• Easy, quick and safe installation due to lightweight
measuring pipe.
• Accurately defined cross-section of measuring pipe.
• Highest accuracy thanks to homogenised flow at
the measurement point.
Measurement system temporarily Measurement system temporarily
installed in channelinstalled in channelDefinition of Task
Flow Measurement In Difficult ConditionsFlow Measurement In Difficult Conditions
Kanaln
etz
-PM
-NP
P-1
-EN
/ 2
7.0
4.2
009
Channel Networks
Portable MeasurementsReference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Installation principle of Installation principle of
measurement systemmeasurement system
16
Definition of Task
Solution
• Pipe profile with 1.2 m diameter
• Part filled
• Pipe made of concrete
• Risk of sedimentation
• Levels temporarily tending to zero
• No power supply available
• To investigate precipitation discharge and channel utilisation it is necessary to temporarily install
a flow measurement
• Even lowest levels by night are to be measured reliably
• Sedimentation must not lead to measurement failures
• The portable flow measurement system
Type PCM Pro has been used.
• The sensor has been placed slightly out of
the centre to avoid failures due to
sedimentation.
• A sensor-integrated pressure
measurement cell allows to detect
channel impoundage.
• The system has been extended by an air-
ultrasonic sensor (LUS) in order to reliably
measure even lowest nightly discharge.
Advantages:
• Highest flexibility of the measurement
system.
Installation principleInstallation principle
Measurement Utilisation Channel SectionMeasurement Utilisation Channel Section
Measurement point in channelMeasurement point in channel
Application
Kanaln
etz
-PM
-PC
P-1
-EN
/ 2
7.0
4.2
009
Channel Networks
Portable MeasurementsReference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
17
Definition of Task
Solution
• Pipe with 0.2 m diameter
• Part filled
• Pipe made of vitrified clay
• Lowest flow volumes
• Ex zone 1
• Flow volumes shall be measured continuously in order to investigate extraneous
water load
• Particularly lowest flow volumes are to be detected reliably
• Quick and easy installation required
• No power supply available. The portable measurement system used has to have a long
battery lifetime
• The portable, ex-protected flow measurement
system Type PCM Pro has been used.
• The system has been extended by an additional
NIVUS Pipe Profiler (NPP) in order to measure
even lowest flow volumes.
Advantages:
• Easy, straightforward and quick installation
• High accuracy and reliability
• Long battery lifetime (more than 30 days)
Measurement point in channelMeasurement point in channel
Investigation Of Extraneous Water In Investigation Of Extraneous Water In
Smaller DiametersSmaller Diameters
Application
Kanaln
etz
-PM
-PC
P_N
PP
-1-D
T / 2
7.0
4.2
009
Installation principle of Installation principle of
measurement systemmeasurement system
Channel Networks
Portable MeasurementsReference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
18
Definition of Task
Solution
• Pipe with 0.6 m diameter
• Part filled
• Pipe made of concrete
• Ex zone 1
• Dry weather flow volumes shall be measured continuously in order to investigate extraneous
water load in the channel system
• Particularly lowest flow volumes by night are to be detected reliably
• Quick and easy sensor installation required
• The portable transmitter shall be easy to operate
• The portable flow measurement system
Type PCM Pro has been used.
• A pipe mounting system (RMS) has been
used for quick and secure sensor
fastening.
• An air-ultrasonic sensor (LUS) has been
used to even detect lowest flow levels.
Advantages:
• Easy, straightforward and quick installation
• High accuracy and reliability
• Transmitter easy to operate
Measurement point in channelMeasurement point in channel
Application
Installation principleInstallation principle
Kanaln
etz
-PM
-PC
P-2
-EN
/ 2
7.0
4.2
009
Channel Networks
Portable MeasurementsReference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Investigation Of Extraneous Water In Investigation Of Extraneous Water In
Larger DiametersLarger Diameters
19
Definition of Task
Solution
• Stormwater overflow manhole,
diameter approx. 2 m
• 4 inlets with various diameters in manhole
• Overflow sill in manhole
• No power supply available
• Providing proof of overflow via sill as planning basis for construction of planned stormwater
overflow tank
• Detection of overflow volumes, levels, duration and frequency
• Measuring and storage of data without external power supply
• Data saved in ASCII format
• Compact construction measurement system
• An event-controlled pressure probe with
integrated battery-powered data logger has
been installed (Type: MemoBar).
• The variable storage cycles are controlled by
internal level limit values. For this reason high
data density is generated at the beginning of
overflow events. On the other hand data density
is low during unimportant dry weather periods.
Advantages:
• The variable storage cycles ensure a very long
lifetime of the measuring and logging system.
Probe Overflow sill
Measurement system installed inMeasurement system installed in
overflow manholeoverflow manhole
Installation principle of Installation principle of
measurement system measurement system
Temporary Overflow MeasurementTemporary Overflow Measurement
Application
Kanaln
etz
-PM
-HS
A-1
-EN
/ 2
7.0
4.2
009
Channel Networks
Portable MeasurementsReference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
20
Sludge Treatment
Stormwater Treatment Facilities
Denitrification Stage
Intake Area
Wastewater Treatment Plant
Flow Measurement At Overflow Sill page 22
Flow Measurement In Small Sewage Works page 23
Flow Measurement Behind Grit Chamber page 24
Flow Measurement With Pontoon page 25
Comparative Measurement On Grid Rack page 26
Level Measurement In Grease Trap page 27
Recirculation Flow Measurement page 29
Return Sludge Flow Measurement page 30
Hot Sludge Flow Measurement page 31
Flow Measurement With Catamaran page 28
Discharge Area
Flow Measurement Using Inverted “Goose Neck” Siphon page 32
Bypass Flow Measurement page 33
Partial Discharge Section Flow Measurement page 34
Flow Measurement In Venturi Flume page 35
Flow Measurement Using Impoundage Shield page 36
21
Definition of Task
Solution
• Pipe with 1.5m diameter, overflow on the side
• Part filled
• Pipe made of concrete
• The stormwater overflow at the inlet are of a wastewater treatment is to be measured
according to mandatory surveillance.
• According to ATV-DVWK volume, time and duration of overflow have to be measured.
• The non-contact ultrasonic measurement
system Type NivuMaster has been used.
• All established discharge characteristics, which
may be selected depending on the shape of the
sill, are stored in the transmitter.
Advantages:
• Day totals and overall totals are recorded using
integrated counters. For this reason no
additional PLC is required.
• Clear text menus lead the user through the
system configuration process. The complete
application parameters may be set up by a few
settings.
StormwaterStormwater overflowoverflow
Flow Measurement At Overflow SillFlow Measurement At Overflow Sill
Application
Kla
era
nla
ge-R
A-N
M-1
-EN
/ 2
7.0
4.2
009
Reference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Wastewater Treatment Plant
Stormwater Treatment Facilities
Measurement principle at overflow weir Measurement principle at overflow weir
22
Definition of Task
Solution
• Pipe line width 0.2 m
• Part filled
• Pipe line made of HDPE
• Low flow levels of 4-5 cm
• Cramped conditions at measurement point
• The flow volume at the intake of a small sewage works shall be measured continuously.
• A relay impulse is to be sent from transmitter to PLC after each cubic meter of wastewater.
• The measurement used shall be cost-effective.
• Quick and easy installation required.
• Flow measurement according to the classic
Doppler method (OCM FR) using a pipe sensor
has been used.
• The measurement has been installed within a
manhole.
• An external ultrasonic level sensor
(NivuCompact) has been used to measure even
lowest filling levels.
Advantages:
• Low purchase costs.
• Easy and quick installation of measuring
section thanks to the use of pipe couplings.
• No flanges required.
Measurement pointMeasurement point
Top view on measurement point in manhole Top view on measurement point in manhole
Flow Measurement In Small Sewage WorksFlow Measurement In Small Sewage Works
Application
Kla
era
nla
ge-Z
B-O
CF
_N
MC
-1-E
N / 2
7.0
4.2
009
Reference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Wastewater Treatment Plant
Intake Area
23
Definition of Task
Solution
• Two pipes with 0.6 m diameter
• Full filled
• Made of stainless steel
• Pipes previously installed
• Individual volumes shall be measured continuously to achieve even distribution and hence the
best possible settling behaviour of the volumes within the parallel grit chambers using the
upstream control slider.
• Existing pipes shall not be dismantled for installation of measurement system.
• Welding works within the pit shall be avoided.
• The particularly for full pipes developed
flow measurement system Type NFP has
been used.
• Sensor nozzles have been fastened on
existing stainless steel pipe lines by using
tensioning belts.
Advantages:
• Easy, simple and quick upgrading without
the need for welding works.
• High accuracy and reliability.
Flow Measurement Behind Grit ChamberFlow Measurement Behind Grit Chamber
Measurement pit behind grit chamberMeasurement pit behind grit chamber
Application
Kla
era
nla
ge-Z
B-N
FP
-1-E
N / 2
7.0
4.2
009
Reference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Wastewater Treatment Plant
Intake Area
Installation principleInstallation principle
24
Definition of Task
Solution
• Rectangular channel 1.4 x 1.2 m (w x h)
• Part filled
• Walls and bottom made of concrete
• Sedimentation on channel bottom due to low
flow velocities
• Continuous measurement of intake volumes to wastewater treatment plant
• Consideration of varying sedimentation levels on the channel bottom to ensure a maximum
measurement deviation of 5%
• Measurement shall be installed and maintained under process conditions
• NIVUS recommended a floating measurement
array. Flow is going to be measured here using
the cross correlation method (OCM Pro).
• The floating sensor calculates the flow volume
from the detected flow level and the flow profile.
Sedimentation layers are detected and
compensated automatically.
Advantages:
• The mechanical components have been
manufactured at reasonable costs on behalf of
the customer according to NIVUS
specifications.
Pontoon with holding barPontoon with holding bar
Construction principle of floating Construction principle of floating
measurement measurement
Flow Measurement With PontoonFlow Measurement With Pontoon
Application
Kla
era
nla
ge-Z
B-O
CP
-1-E
N / 1
4.0
3.2
009
Reference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Wastewater Treatment Plant
Intake Area
25
Application
Definition of Task
Solution
• Measurement of primary and secondary impoundage to calculate switching thresholds for
grid rack operation
• Maximum primary impoundage has to engage an emergency bypass
• Level difference, primary and secondary impoundage are to be indicated
• Forwarding of readings and switching points to following control system
• The task may be solved easily and cost-effective
by using two echo sounders Type NivuCompact
with intrinsically safe power supply in connection
with the NivuCont Plus transmitter.
• Clear text menus lead the user through the
system configuration process. The complete
application parameters may be set up by a few
settings.
Advantages:
• Complete control algorithms may be implemented
beyond utilising primary impoundage levels,
secondary impoundage levels and level
differences. An additional PLC is not required.
• Installation has been effortless due to the low
dead zone of the sensors used.
Kla
era
nla
ge-Z
B-N
MC
_N
CP
-1-E
N.p
pt /
14.0
3.2
009
Comparative Measurement On Grid RackComparative Measurement On Grid Rack
• Rectangular channel 0.8 x 0.8 m (w x h)
• Low-pitched sensor installation points
• Covers on rectangular channels must not be opened
• Ex zone 1
View of fine rack View of fine rack
Application diagramApplication diagram
Reference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Wastewater Treatment Plant
Intake Area
26
Definition of Task
Solution
• Grease trap
• Depth of pit: approx. 4 m
• Medium: wastewater with grease contents and
temporary foam formation
• The level of the wastewater-grease mixture in the pit shall be measured reliably.
• A pressure measurement probe has to be used for detection. It is not possible to use a non-
contact ultrasonic probe due to foam formation from time to time.
• Accumulation of grease must not lead to sensor cable damage.
• Maintenance and cleaning measures shall be quickly, easily and safely executable.
• Utilisation of a submersible probe (special version
of NivuBar Plus II) with integrated G 1“ outer
thread for direct installation of a protective pipe.
Advantages:
• The installed pipe protects the cable from caking
and against mechanical stress.
• Removing the probe regularly for cleaning
purposes is significantly facilitated.
• The pressure probe is fastened safely using the
protective pipe. This helps to facilitate accurate
depth adjustment (zero point).
Application
Grease trapGrease trap
Level Measurement In Grease TrapLevel Measurement In Grease Trap
Kla
era
nla
ge-Z
B-N
BP
-1-E
N / 0
1.0
4.2
009
NivuBarNivuBar Plus in special version Plus in special version „„GG““
Reference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Wastewater Treatment Plant
Intake Area
• Grease trap
• Depth of pit: approx. 4 m
• Medium: wastewater with grease contents and
temporary foam formation
27
Flow Measurement With CatamaranFlow Measurement With Catamaran
Definition of Task
Solution
Float for sensorFloat for sensor
• The measurement has been implemented using
a volume measurement system Type OCM Pro
CF including a catamaran.
• Flow volume is calculated using flow velocity and
flow level which are measured by a floating
sensor. Sedimentation on the channel bottom will
be detected and compensated automatically.
Advantages:
• Despite the large channel width of 2 m it was
sufficient to use one flow sensor to meet
accuracy requirements. The deviation compared
to the reference system is less than 3 %.
• The mechanical components have been
manufactured at reasonable costs on behalf of
the customer according to NIVUS specifications.
• Rectangular channel 2.5 x 2.0 m (w x h)
• Part filled
• Channel walls and bottom made of concrete
• Risk of sedimentation on channel bottom
• Channel cannot be drained
• The flow in the inlet channel of the denitrification stage is to be measured in order to control
internal substance cycles.
• Measurement uncertainties lower than 5 % are required although sedimentation might settle.
• Measurement shall be installed and maintained under process conditions
Application
Kla
era
nla
ge-B
L-O
CP
-1-E
N / 1
7.0
3.2
009
Schematic diagramSchematic diagram
Reference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Wastewater Treatment Plant
Denitrification Stage
28
Definition of Task
Solution
• Pipe with 0.4 m diameter
• Full filled
• Pipe made of stainless steel
• High pollution load, up to 1 % dry solids
• Return sludge is lifted to delivery pit via spiral conveyor. It subsequently flows through a
horizontal pipe to the measurement shaft.
• The application already has 2 measurements (1x EMF, 1x clamp-on) which however did not
operate reliably due to high contents of dirt and gas bubbles. The new system shall solve the
problems without the need for comprehensive installation measures.
• The flow measurement system Type
NFP has been used.
• A hole has been drilled into the existing
stainless steel pipe and an appropriate
nozzle has been installed. Subsequently
a ball valve for sensor removal under
process conditions has been installed
and the sensor has been adjusted and
fixed.
• Advantages:
• Easy, simple and quick upgrading of
existing facilities.
• Old measuring devices were not
necessarily to be removed.
• Reliable measurement despite high dry
solid contents.
Setup of measurement placeSetup of measurement place
Recirculation Flow MeasurementRecirculation Flow Measurement
View of measurement shaftView of measurement shaft
Application
Kla
era
nla
ge-S
B-N
FP
-2-E
N / 2
7.0
4.2
009
Wastewater Treatment Plant
Sludge TreatmentReference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
29
Definition of Task
Solution
• Pipe with 0.7 m diameter
• Full filled
• Pipe line made of stainless steel
• Point of installation in telescopic pipe
• The volume shall be measured in order to monitor and to control smooth sludge discharge
from final clarification tanks.
• The vertically retractable telescopic pipe is the only possible access to the medium.
• Maintenance-free operation with measurement uncertainties better than 5 % required.
• Installation without the need for comprehensive reconstruction measures.
• The flow measurement system Type NFP for
full pipes has been used.
• The fully submersible sensor Type POA has
been installed in the top section of the
telescopic pipe.
• Flow profile detection enables accurate flow
measurement. Dry solid contents higher than
1% do not affect the measurement.
Advantages:
• Easy and cost-effective upgrading
• High reliability and reproducibility
• Insensitive to pollution
• Maintenance-free
Telescopic pipe in operationTelescopic pipe in operation
Measurement principle Measurement principle
Return Sludge Flow MeasurementReturn Sludge Flow Measurement
Application
Kla
era
nla
ge-S
B-N
FP
-3-E
N / 2
7.0
4.2
009
Reference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Wastewater Treatment Plant
Sludge Treatment
30
Hot Sludge Flow MeasurementHot Sludge Flow Measurement
Definition of Task
Solution
• Pipe with 0.15 m diameter
• Full filled
• Pipe made of stainless steel
• Medium contains oil and grease
• Hot sludge
• Digested sludge from a digestion tank is constantly pumped through a heat exchanger.
• The sludge flow volume shall be measured continuously in order to immediately detect a
blocked heat exchanger or fading pump performance, ensuring permanent heat supply to
the rooms of the wastewater treatment plant.
• The flow measurement system Type NFP has been
used.
• A hole has been drilled into the existing stainless
steel pipe line and a nozzle has been welded.
Subsequently the flow velocity sensor has been
adjusted and fixed.
Advantages:
• Easy, straightforward and quick upgrading of
existing facilities.
• High measurement accuracy and reliability despite
heavy pollution.Measurement place with installed sensorMeasurement place with installed sensor
Heat exchangerHeat exchanger
Application
Kla
era
nla
ge-S
B-N
FP
-1-E
N / 2
7.0
4.2
009
Reference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Wastewater Treatment Plant
Sludge Treatment
31
Definition of Task
Solution
• Pipe with 0.15 m diameter
• Full filled
• Pipe made of stainless steel
• EMF, faultily installed
• EMF has indicated much too high readings most of the time due to air within the pipeline
and a much too short calming section.
• Uncomplicated and quick upgrade wanted, shall be accurate, reliable and cost-effective.
• A measurement system Type NFP has
been used.
• The pipe reaching into the discharge
manhole has been equipped with an
additional pipe section, an elbow (“goose
neck“) and with a welding nozzle for flow
velocity sensor installation.
• The elbow renders a constantly filled pipe.
Advantages:
• Easy, straightforward and quick upgrading
of existing facilities.
• Saves costs for pipe section and
gate valve.
Flow Measurement Using Inverted Flow Measurement Using Inverted ““Goose NeckGoose Neck”” SiphonSiphon
Installed measurement
Application
Kla
era
nla
ge-A
B-N
FP
-1-E
N / 2
7.0
4.2
009
Wastewater Treatment Plant
Discharge AreaReference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Measurement SetupMeasurement Setup
32
Definition of Task
Solution
• Pipe with 0.08 m diameter
• Full filled
• Pipe made of stainless steel
• Previously installed EMF
• The EMF reducing the pipe from 0.2 m to 0.08 m diameter caused obstructive backwater
formation during peak times.
• The customer wants a cost-efficient, reliable and backwater-free measurement in the 200 mm
pipe line.
• Installation shall be carried out without the need for comprehensive modifications (such as
additional flanges, gate valves or similar).
Bypass Flow MeasurementBypass Flow Measurement
• The existing emergency bypass
has been replaced by a pipe with
0.2 m diameter and a nozzle. The
NFP sensor is installed in the
nozzle.
• It is not necessary to use a stop
valve if a ball valve is used. This
allows to exchange or to control
the sensor under operating
conditions.
• Old measurement remains on site
without being dismantled.
Advantages:
• Easy, straightforward and quick
upgrading of existing facilities.
Top view on schematic measurement setupTop view on schematic measurement setup
Application
Kla
era
nla
ge-A
B-N
FP
-2-E
N / 2
7.0
4.2
009
Wastewater Treatment Plant
Discharge AreaReference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Top view on measurement placeTop view on measurement place
33
Partial Discharge Section Flow MeasurementPartial Discharge Section Flow Measurement
Definition of Task
Solution
Pump room with discharge line Pump room with discharge line
on rear wallon rear wall
Sensors installed in pipe lineSensors installed in pipe line
• Pipe with 0.5 m diameter
• Full filled
• Pipe line made of stainless steel
• A partial discharge section of a wastewater treatment plant shall be measured for final
clarification tank control.
• Loading and unloading of tap water is controlled on the measurement point additionally.
• Detected readings have to be forwarded to a PLC for control purposes.
• A transit time measurement system Type
NivuSonic using 2 measurement paths has been
used.
• The sensors have been installed in a measuring
pipe with integrated ball valves. This allows to
replace sensors under process conditions at any
time.
• Crosswise path arrangement virtually eliminates
crossflow during calculation.
Advantages:
• Easy and robust installation using calibrated pipe
segment
• No bypass required
• High accuracy and reproducibility
Application
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Wastewater Treatment Plant
Discharge AreaReference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
34
Definition of Task
Solution
• Rectangular channel 0.5 x 0.6 m (w x h)
• Part filled
• Channel walls and bottom made of concrete
• Upgrading an existing Venturi flume with a
measurement system
• Detection of wastewater treatment plant discharge using existing Venturi flume
• Output of flow volume to control system
• Output of volume-proportional m³-impulses for on-site counter
• A Q/h related ultrasonic volume
measurement Type NivuMaster has
been installed.
• In order to maintain the measuring
uncertainty as low as possible, an
ultrasonic sensor with a very low dead
zone (Type P-M3, dead zone 0.07m)
has been selected to detect
impoundage level.
• All signals requested by the customer
are transmitted from the transmitter to
the control system and the on-site
counter.
• The sensor has been installed above
the Venturi flume by using a standard
wall installation angle.
Flow Measurement In Flow Measurement In VenturiVenturi FlumeFlume
Application
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009
Wastewater Treatment Plant
Discharge AreaReference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
VenturiVenturi flume measurement in dischargeflume measurement in discharge
Schematic diagram of Schematic diagram of VenturiVenturi flumeflume
and correct sensor positionand correct sensor position
35
Definition of Task
Solution
• Pipe with 0.4 m diameter
• Part filled
• Pipe line made of stainless steel
• Only short measuring section available
• Low nightly discharge
• The facility has been previously billed in a lump sum considering inlet volumes. For that
reason the customer necessarily requires a discharge measurement to save costs
• Installation costs and efforts shall be as low as possible
• Low volumes during the night are to be detected accurately and reliably
Flow Measurement Using Impoundage ShieldFlow Measurement Using Impoundage Shield
Discharge pipe with impoundage shieldDischarge pipe with impoundage shield
Application
Kla
era
nla
ge-A
B-O
CF
-1-E
N / 2
7.0
4.2
009
Wastewater Treatment Plant
Discharge AreaReference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
• The discharge pipe into the recipient has been
left unmodified. It now is used as new
measuring section
• To detect even lowest volumes, an
impoundage shield has been installed to
constantly create a minimum water level.
• A flow velocity sensor with integrated pressure
cell for level measurement has been installed
using a pipe mounting system. Readings are
measured with an OCM Pro CF.
Advantages:
• No facility modification required
• Sensor fastening without drilling or similar
• High measuring dynamics between nightly
discharge and rainy weather can be measured
Setup of measuring sectionSetup of measuring section
36
Measurement Campaigns
Extraneous Water
Precipitation Discharge Measurement
Hydraulic Inspection
Inspection Of Throttle Equipment page 38
Inspection Of Flow Measuring Equipment page 40
Data Collection During Dry Weather Periods
Including Evaluation Of Extraneous Water page 42
Simultaneous Data Acquisition At 78 Measuring Points page 44
Concentration Of Pollutants
Investigation Of Pollution Loads In A Stormwater Channel page 46
Pollution Load In Overflow Discharge page 48
Flowing Water Discharges
Hydraulic Stress Of Natural Flowing Waters Due To Heavy Rainfall page 50
37
Definition of Task
Implementation
Reference Project
• Metrologic inspection of throttle equipment
according to German self-control ordination
(EKVO)
• Verification of approved pipe volume of Q = 10
l/s (readings must not vary by more than 20 %
from reference value)
• Gathering of information on stormwater tanks and throttle equipment already before
tendering
• Visual inspection of throttle equipment
• Inspection concept considering local conditions
• Definition of measurement points considering accessibility and hydraulic conditions
• Planning of work to be undertaken and selection of measuring equipment
• Assessment of throttle equipment under
operating conditions regarding condition of
throttle equipment, impoundage marks,
hydraulic conditions and similar.
• Check-up of relevant dimensions (heights,
lengths and cross-sectional areas).
• Installation of measuring equipment for
detection of tank filling level and throttle
discharge.
• Provoked impoundage of stormwater tank
by feeding river water.
• Comparative measurement for recording of
discharge curve (characteristic).
• Compilation of inspection documentation.
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7.0
4.2
009
Inspection Of Throttle EquipmentInspection Of Throttle Equipment
Measurement Campaigns
Hydraulic Inspection
Planning / Conception
StormwaterStormwater overflow tank overflow tank –– main main
collector with mechanically controlled collector with mechanically controlled
throttle valvethrottle valve
Comparative measurement using Comparative measurement using
NIVUS Pipe ProfilerNIVUS Pipe Profiler
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
38
Data
• Verification of data and plausibility
• Evaluation of discharge curve (characteristic)
• Comparison between characteristic and setpoint
value and calculation of deviation
Data Handover
Chart of inspection result: comparison between throttle dischargChart of inspection result: comparison between throttle discharge and tank level e and tank level
hydrographshydrographs
• Report on implementation of inspection: documentation of all applicable throttle equipment
data as well as inspection methods and inspection results.
• Catalogue of measures regarding upgrading of throttle equipment considering German
ATV-A 111 regulation (an average deviation of > 60 % compared to the setpoint value has
been detected).
• Two copies of inspection certificate.
Overflow channel flowing into receiving Overflow channel flowing into receiving
water (at high watermark)water (at high watermark)
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Measurement Campaigns
Hydraulic InspectionReference Project
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Result Of Inspection
0
2
4
6
8
10
12
14
16
18
11:00:00 11:10:00 11:20:00 11:30:00 11:40:00 11:50:00 12:00:00 12:10:00
Time [hh:mm:ss]
Th
rott
le d
isc
ha
rge
[l/
s]
53,0
53,5
54,0
54,5
55,0
55,5
Wa
ter
leve
l in
ta
nk
[m
NN
]
Throttle discharge Water level in tank
Q_target = 10 l/s (+/- 20 %)
W_max = 55,10 mNN
39
Definition of Task
• Metrologic inspection of flow measuring
equipment according to German self-control
ordination (EKVO)
• Inspection of flow measurement at relevant
discharge point according to German regulations
• Gathering of information on flow measuring equipment prior to tendering
• Visual inspection of flow measuring equipment
• Inspection concept considering local conditions
• Definition of measurement points considering accessibility and hydraulic conditions
• Planning of work to be undertaken, selection of measuring systems and securing of
stationary conditions
• Assessment of flow measurement place
under operating conditions regarding
hydraulic conditions and measurement
range.
• Check-up of relevant dimensions.
• Inspection of transmission and recording of
readings.
• Installation of comparative measurement
system for flow verification.
• Comparative measurement utilising various
operating conditions in order to detect the
relative deviation.
• Documentation of inspection.
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009
Inspection Of Flow Measuring EquipmentInspection Of Flow Measuring Equipment
Planning / Conception
Flow measurement at relevant Flow measurement at relevant
discharge point (diameter 0.3 m, discharge point (diameter 0.3 m,
bottombottom--based velocity sensor)based velocity sensor)
Installed comparative measurement system: Installed comparative measurement system:
NIVUS Pipe Profiler (NPP)NIVUS Pipe Profiler (NPP)
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Reference Project
Implementation
Measurement Campaigns
Hydraulic Inspection
40
Data
Correlation of discharges from both Correlation of discharges from both
measurement pointsmeasurement points
Data Handover
Chart of inspection result: relative deviation from check value Chart of inspection result: relative deviation from check value of comparative of comparative
measurementmeasurement
• Report on implementation of inspection: documentation of all applicable flow measuring
equipment data as well as inspection methods and inspection results.
• Result: the relative deviation from check values of verified flow areas is within the limits of
permissible errors.
• Two copies of inspection certificate.
• Verification of data and plausibility
• Evaluation of discharge hydrograph during
control measuring period
• Investigation of relative and absolute deviation
from verification value
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NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Reference ProjectMeasurement Campaigns
Hydraulic Inspection
Correlation Of Discharges
0
10
20
30
40
50
0 10 20 30 40 50
Relevant measurement point [l/s]
Co
mp
ara
tive
mea
su
rem
en
t [l
/s]
Result Of Comparative Measurement
-15%
-10%
-5%
0%
5%
10%
15%
0,0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1,0
Comparative measurement/Q_max [-]
((re
leva
nt
me
as
ure
me
nt
po
int)
-(c
om
pa
rati
ve
me
as
ure
me
nt)
)/(c
om
pa
rati
ve
me
as
ure
me
nt)
[%
]
Deviation of relevant measurement point
Error limit (according to German self-control ordination)
41
Definition of Task
• Set-up of 9 measurement places for a
measurement period of 4 weeks
• Investigation of extraneous water loads in parts
of the channel network catchment area
• Implementation of campaign at short notice in
order to combine road works with sewer
rehabilitation measures
• Installation, commissioning and test run of
measurement system with subsequent fine-
tuning.
• Periodic verification of measurement
system and measurement points on site
• Provision of information on progress of
measurement campaign (precipitation
intensity, discharge data and more)
• Removal of measurement system after
customer approval
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Data Collection During Dry Weather Periods Including Data Collection During Dry Weather Periods Including
Evaluation Of Extraneous WaterEvaluation Of Extraneous Water
• Specified planning of measurement place based on channel layout
• Site inspection in close coordination with customer
• Assessment of measurement place regarding hydraulic conditions and accessibility
• Determination of measurement points and selection of accompanying measurement system
• Quick and simple arrangement of dates with customer
Installation of measurement systemInstallation of measurement system
Ingress of extraneous waterIngress of extraneous waterPlanning / Conception
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Reference ProjectMeasurement Campaigns
Extraneous Water
Implementation
42
Data
• Backup of raw data in data bank
• Verification of data and plausibility (software:
WISKI, Kisters AG)
• Evaluation of extraneous water (software:
MANAti, bks HTV GmbH) and representation of
methods to separate dirty water and extraneous
water from dry weather discharge
Data Handover
• Complete documentation on measurement place.
• Handover of measurement data in desired format (*.txt and *.xls).
• Separate handover of results of extraneous water analysis.
• Creation and handover of CD containing clear visual representation of all measurement
results (daily and weekly charts) including all relevant project information after project has
been finished.
Data evaluationData evaluation
Visual representation of measurement results as weekly chartVisual representation of measurement results as weekly chart
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NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Reference ProjectMeasurement Campaigns
Extraneous Water
43
Definition of Task
• Set-up of 78 measurement places for a
measurement period of 4 months
• Implementation of precipitation discharge
measurement for revision of sewer system
masterplan
• Creating a basis for channel network control
• Utilisation of measurement data for extraneous
water analysis
• Determination of measurement points in channel network considering customer-related
catchment areas
• Preliminary site inspection: test for measurement suitability, selection of measurement
systems and sensors
• Compilation of schedule for set-up and commissioning of 73 flow and level measurement
points as well as 5 precipitation loggers within one week
• Installation of measurement systems and
commissioning of all measurement points
within 5 working days.
• Maintenance of measurement points every
14 days (data backup, battery replacement,
visual inspection, functional test and sensor
cleaning if necessary).
• After achieving the measuring target and
final approval by customer: sensor removal.
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Simultaneous Data Acquisition At 78 Measuring PointsSimultaneous Data Acquisition At 78 Measuring Points
Measurement Campaigns
Precipitation Discharge Measurement
Planning / Conception
Channel layoutChannel layout
Flow measurement place: sensors for flow Flow measurement place: sensors for flow
velocity and level measurementvelocity and level measurement
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Reference Project
Implementation
44
Data
• Import of raw data into data bank for permanent
availability (software: WISKI, Kisters AG)
• Continuous verification of data and plausibility
• Accompanying provision of measurement data
for customer
Data and plausibility verificationData and plausibility verification
Measurement Campaigns
Precipitation Discharge Measurement
Data Handover
• Detailed documentation on measurement points.
• Handover of measurement data in required format (*.txt as well as *.xls).
• Representation of all measurement data as daily and weekly hydrographs (*.pdf).
• Project CD: containing clear visual representation of all measurement results including all
relevant project information after project has been finished.
Graphic representation of overflow event on Graphic representation of overflow event on stormwaterstormwater overflowoverflow
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NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Reference Project
45
Definition of Task
• Continuous investigation of flow and substance
concentrations in stormwater channel over a
period of 10 months
• Data to be available online and immediate
notification of customer in case of rainfall events
• Parameters to detect: h [m]; v [m/s]; Q [l/s]; T
[C°]; C_CSBeq [mg/l]; C_CSBfeq [mg/l] and
C_AFSeq [mg/l] as well as precipitation hN [mm],
air temperature [C°] and sampler signals (on/off
points, bottle changeover)
• Installation of metering cabinet as well as
installation and commissioning of sensors
within one day.
• Monthly maintenance on site, inspection of
measurement system.
• Regular creation of backups and screening
of readings via data telecommunication
• Instantaneous verification of data after
receiving event messages (per SMS).
• Set-up of remote data access for customer
to ensure immediate access to current
readings at any time.
Longitudinal section of Longitudinal section of stormwaterstormwater
channel with 2 m diameterchannel with 2 m diameter
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Investigation Of Pollution Loads In A Investigation Of Pollution Loads In A
StormwaterStormwater ChannelChannel
Measurement Campaigns
Concentration Of Pollutants
• Specified planning of project considering all relevant conditions
• Preliminary site inspection involving all participants and discussion on possible solutions
• Organisation of working procedures involving all participants to ensure smooth processes
• Set-up of message system (SMS) for automatic and immediate notification of customer at
the beginning of precipitation events
• Realisation of requirements using a pre-configured metering cabinet
OnlineOnline--spectrometer probespectrometer probe
Top left: metering cabinetTop left: metering cabinet
Planning / Conception
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Reference Project
Implementation
46
Data
• Backup of raw data in data bank
• Verification of data and plausibility (software:
WISKI, Kisters AG)
• Data evaluation at short notice as required by
customer
Verification of dataVerification of data
Data Handover
• Complete documentation on measurement place.
• Handover of measurement data in desired format (*.txt and *.xls).
• Project CD: containing clear visual representation of all data (daily and weekly charts)
including all relevant information without the need for additional software.
• Saves time during further data processing thanks to clear representation of measurement
results.
Visual representation of measurement results as daily chartVisual representation of measurement results as daily chart
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NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Reference ProjectMeasurement Campaigns
Concentration Of Pollutants
47
Definition of Task
• Continuous detection of flow and substance
concentrations in a wastewater treatment plant
and at three points within the channel network
connected upstream over a period of 15 months
• Investigations proving the equivalence of
different kinds of wastewater disposal
• Preliminary planning based on plans on existing sewer channels in close coordination
with customer
• Preliminary inspection of measurement places, determination of measurement points,
selection of measurement systems
• Planning of implementation: staff roster and schedule, test run of measurement systems
• Set-up of data telecommunication for enhanced data availability
• Installation and commissioning of
measurement system
• Monthly maintenance of measurement
places on site and inspection of
measurement systems
• Regular screening of measurement data via
remote access
• Removal of measurement system after
approval by customer
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Pollution Load In Overflow DischargePollution Load In Overflow Discharge
Wastewater treatment plant of Wastewater treatment plant of
catchment areacatchment area
Flow measurement placeFlow measurement place
Planning / Conception
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Reference Project
Implementation
Measurement Campaigns
Concentration Of Pollutants
48
Data
• Backup of raw data in data bank
• Verification of data and plausibility
• Creation of 5-minute averages derived from
1-minute readings specified by customer
Data Handover
• Creation of data packets on overflow events as specified by customer.
• Output of substance concentrations at overflow constructions including specifications on
over flow duration and overflow levels.
• Data conversion into format required by customer.
• Project CD: graphic representation of measurement data and project conclusion report.
Substance concentration measurement Substance concentration measurement
during overflow eventduring overflow event
Graphic representation of flow and substance concentration at Graphic representation of flow and substance concentration at
overflow construction during combined wastewater overflowoverflow construction during combined wastewater overflow
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NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Reference ProjectMeasurement Campaigns
Concentration Of Pollutants
49
Definition of Task
Planning / Conception
• Set-up of 28 flow measurement points in order to
create a sewer system masterplan
• Detection of hydraulic stress and substance loads
of flowing waters in case of heavy rainfall events
• Realisation of flow and substance concentration
measurements in the water body
• Specified planning of measurement points on site in close coordination with customer,
based on layouts of individual parts of the drainage area
• Determination of best possible measurement points in the water body and investigation of
channel shapes
• selection of measurement systems and development of special solutions (e.g. flow
measurement using three perpendicular float velocity measurements from top down).
• Set-up of data telecommunication for continuous monitoring of measurement points
• Preparation of the measurement system to
be used considering applicable
requirements of the measurement place.
• Installation and commissioning of the
measurement system including test run.
• Regular maintenance of measurement
places on site, system inspection.
• Regular creation of backups and screening
of readings via data telecommunication.
• Removal of measurement systems after
achieving the measurement target and
approval by customer.
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Hydraulic Stress Of Natural Flowing Waters Due To Hydraulic Stress Of Natural Flowing Waters Due To
Heavy RainfallHeavy Rainfall
Preliminary inspection of relevant Preliminary inspection of relevant
sections of water bodysections of water body
Flow measurement point in surface water body: Flow measurement point in surface water body:
sensors have been installed on the underside sensors have been installed on the underside
of the surfboards (floats)of the surfboards (floats)
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Reference Project
Implementation
Measurement Campaigns
Flowing Water Discharges
50
Data
• Backup of raw data in data bank
(software: WISKI, Kisters AG)
• Verification of data and plausibility
• Evaluation of flow velocity measurement (three
perpendicular measurements for high accuracy)
for investigation of flow at all measuring points
Data Handover
• Complete documentation on measurement place including presentation of all steps required
for flow detection in the water body sections.
• Handover of data in desired format (*.txt and *.xls).
• Handover of project CD with graphic representation of all measurement data (daily and
weekly charts) including project conclusion report.
Schematic diagram of flow measurement, crossSchematic diagram of flow measurement, cross--sectionsection
Sensors installed on bottom of Sensors installed on bottom of
water bodywater body
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NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
Reference ProjectMeasurement Campaigns
Flowing Water Discharges
51
52
Flowing Waters
Power Plants
Irrigation Systems
Flow Measurement In Turbine Intake page 54
Cooling Water Flow Measurement In Renaturalised Channel page 55
Flow Measurement In Service Reservoir page 56
53
Flowing Waters
Power Plants
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Flow Measurement In Turbine IntakeFlow Measurement In Turbine Intake
Definition of Task
Solution
• Rectangular channel 7.8 x 2.0 m (w x h)
• Part filled
• Concrete walls due to bridge
• Natural bed
• Turbine intake shall be controlled permanently in order to make sure not to unload too much
water from the river.
• This is to ensure not to underload turbines due to low flow volumes but to switch the pumps
off instead.
• A transit time measurement Type NivuChannel has
been used due to water quality and low suspended
solids content.
• A measurement point underneath a bridge has
been selected in order to obtain the best possible
profile shape.
• The natural bed is tending to crossflow effects. Two
measurement paths have been installed crosswise
to compensate these effects.
Advantages:
• Easy and robust installation
• High accuracy
• Reproducibility of readings
• Reliability under all process conditions
Installation of rod sensorsInstallation of rod sensors
Measurement point at bridgeMeasurement point at bridge
Application
Reference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
54
Definition of Task
Solution
• Trapezoid channel 7 x 1.8 m (w x h)
• Part filled
• Natural bed and bank
• The cooling water volume fed from a power plant into a surface water body is to be
detected.
• The measuring section consists of a renaturalised surface water body.
• Sensors shall be installed safely and have to be accessible at any time.
• The sensors of the measurement system Type
OCM Pro have been fastened on a movable
carriage. The carriage has been put on two rails
reaching into the water body.
• The level is detected with a sensor-integrated
hydrostatic measuring element.
Advantages:
• A robust and accurate measurement has been
installed without the need for comprehensive
reconstruction measures. Furthermore the
measurement can be accessed for
maintenance purposes at any time.Carriage with installed sensors Carriage with installed sensors
Cooling Water Flow Measurement In Cooling Water Flow Measurement In
RenaturalisedRenaturalised ChannelChannel
Application
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Measurement placeMeasurement place
Flowing Waters
Power PlantsReference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
55
Definition of Task
Solution
• Special profile, approx. 2.5 x 2.0 m (h x w)
• Part filled
• Channels made of natural stone and concrete
• High flow dynamics
• The inflow of a storage lake is to be detected in order to control volumes and to handle
water management.
• Flow measurement for feeding river water into the storage lake has to be able to reliably
ensure measurement dynamics from low volumes up to a maximum of 2000 l/s.
• A flow measurement system Type OCM Pro has
been used. The level is detected by a separate
compact echo sounder.
• The sensor has been installed on a stainless
steel plate to prevent the sensor from
obstruction and to avoid vorticity on the channel
bottom.
Advantages:
• The transmitter allows to easily set the required
parameters for the existing special profile.
• The selected sensors meet the requirements of
the extreme flow dynamics of the measurement
point.
Storage lakeStorage lake
Measurement point in conveyance culvert Measurement point in conveyance culvert
Flow Measurement In Service ReservoirFlow Measurement In Service Reservoir
Flowing Waters
Irrigation Systems
Application
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Reference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
56
Food Industry
Chemical Industry
Industry
Flow Measurement In Cooling Water Tap page 58
Flow And Analysis Measurement page 59
57
Definition of Task
Solution
• Flow within the cooling water channel has to be controlled permanently to ensure cooling process
as well as pump control.
• Inflow has to be controlled due to limited volumes of the following grit separators.
• Flow shall be detected continuously even in case of fluctuating water levels.
Installation of sensors in channelInstallation of sensors in channel
Industry
Chemical Industry
Completed installationCompleted installation
Flow Measurement In Cooling Water TapFlow Measurement In Cooling Water Tap
• A transit time measurement Type NivuChannel
has been used due to the clean medium.
• Rod sensors have been used, allowing to select
holders which enable sensor removal from the
outside under operating conditions. The sensor
holders have been installed in the top area since
the water level cannot be lowered for a longer
period. This allows to remove the sensors from
above for maintenance purposes.
Advantages:
• Easy and robust installation
• Sensors can be removed or maintained under
operating conditions
• High-accurate flow detection
Application
• Closed rectangular channel,
3.8 x 3.5 m (h x w)
• Part filled
• Walls and bottom made of concrete
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Reference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
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Definition of Task
Solution
• Pipe with 0.3 m diameter
• Part filled
• Pipe made of HDPE
• Shift production
• Heavy flow fluctuation
• Low sedimentation
• The discharge from an industrial plant to a municipal channel is to be equipped with a
measurement point due to monitoring and billing purposes. Volume measurement, pH
measurement as well as a sampling point have to be integrated.
• Due to extreme flow dynamics even lowest volumes have to be detected accurately.
• The existing shaft shall be used for installation and control as well as maintenance works
shall be carried out by one single person.
• Using the NIVUS Pipe Profiler (NPP) creates a
high-accurate flow measurement which
furthermore is able to reliably detect and to
compensate sedimentation and obstructions.
• pH sensor and sampling point have been
integrated into the measurement pipe.
• The elbow segment of the measurement pipe
may be folded away for cleaning purposes.
Advantages:
• Cost-effective measurement from the top of the
manhole.
NPP in operationNPP in operation
Schematic diagram of NPP including Schematic diagram of NPP including
sampling and pH sensorsampling and pH sensor
Flow And Analysis MeasurementFlow And Analysis Measurement
Industry
Food Industry
Application
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Reference Application
NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]
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NIVUS GmbH NIVUSAG NIVUS Sp. z o.o. NIVUS FranceIm Taele 275031 Eppingen, GermanyPhone: +49 (0) 72 62 / 91 91 - 0Fax: +49 (0) 72 62 / 91 91 - 999E-mail: [email protected]: www.nivus.com
Hauptstrasse 498750 Glarus, SwitzerlandPhone: +41 (0) 55 / 645 20 66Fax: +41 (0) 55 / 645 20 14E-mail: [email protected]: www.nivus.com
Phone: +48 (0) 58 / 760 20 15Fax: +48 (0) 58 / 760 20 14E-mail: [email protected]: www.nivus.pl
Phone: +33 (0) 3 88 07 16 96Fax: +33 (0) 3 88 07 16 97E-mail: [email protected]: www.nivus.com
ul. Hutnicza 3 / B-1881-212 Gdynia, Poland
14, rue de la Paix67770 Sessenheim, France
P.O. Box 342, Egerton, BoltonLancs. BL7 9WD, U.K.Phone: +44 (0) 1204 591559Fax: +44 (0) 1204 592686E-mail: [email protected]: www.nivus.com
NIVUS U.K.