OCM Pro CF

OCM Pro CF
ac
co
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ng
o MCERTS
NIVUS Flow M
on
certified
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rin
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Sira MC110189/00
Sira MC130219/00
Dial device
Help
Creating connection
With worldwide TCP/IP
communication !
OCM Pro CF
High accurate Flow
Measurement in
Channels, part filled
and full Pipes as well
as in Flumes and
Surface Water Bodies
OCM Pro CF
New in the Flow Measurement Area
NIVUS flow measurement technology stands for innovation and high
accuracy.
The OCM Pro CF is a permanent measurement system for continuous
flow measurement, flow control and storage of recorded data in a range
from slight to heavily polluted media of various consistencies.
It is designed for use in part filled and full pipes, channels and flumes
with many different shapes and dimensions.
The OCM Pro CF is equipped with fast processors and offers online
access via the Internet. This ensures more versatile, more reliable and
more economic operation.
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Overview on Transmitter Details
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very high accuracy
measures and indicates the real flow
velocity profile
spatial allocation of measured single
velocities
cross correlation with digital pattern
detection
absolutely stable zero point and
drift-free
no electrodes, no conductivity
required
measures in all channels,
part filled and full pipes and flumes
measures in heavily polluted
and abrasive media
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no external calibration required
suitable even for very difficult
applications
easy installation without additional
constructions
Ex approval for zone 1 as ATEX
very easy parameter setting in
multilingual dialog mode
large, back-lit graphic display
stores complete measurement data
on Compact Flash card
worldwide TCP/IP communication
online connection/data transmission
and remote maintenance via
Internet
Lift-up mechanism for inspection purposes or for sensor removal under operational conditions
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OCM Pro CF
Sensors - high accuracy and universal use
A complete OCM Pro CF measurement place consists of a transmitter and appropriate active sensors. There are flow velocity sensors with and without integrated
flow level measurement available as well as air-ultrasonic flow level sensors for
direct connection to OCM Pro CF. Various constructions can be used depending
on the kind of application. You can select from wedge sensors for installation in
channels and open flumes or pipe sensors for installation in steel, concrete and
plastic pipes.
Your benefits
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Air-ultrasonic sensor
for level measurement,
installation on channel crown
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Wedge sensor
for installation on
bottom or side of the channel
Types:
+ v-measurement only
+ combined v-measurement and
h-measurement (ultrasound)
+ combined v-measurement and
h-measurement (pressure)
+ combined v-measurement and
h-measurement (ultrasound and
pressure)
Pipe sensor
for installation in pipes and in
NIVUS Pipe Profiler
Types:
+ v-measurement only
+ combined v-measurement and
h-measurement (Ultrasonic)
4
no modifications or additional constructions at place of installation
triple redundant level measurement
(air-ultrasound, water-ultrasound,
hydrostatic)
measurement dynamics between
5 mm/s and 6 m/s
measures in both flow directions
highly medium-resistant standard
sensors (PPO, PEEK, 1.4571,
Hastelloy C276)
sensors resistant to chemicals for
highest demands
cables can be extended without
any problems
Ex approval zone 1 as ATEX
protection rating IP 68
Successful in use anywhere
Flow measurement in rectangular
channel of a sewage treatment plant
Due to heavy vorticity 3 sensors have been
installed. Since initial start-up in December
2001 the measurement runs without
interruption.
Standard sensor installed
on a wedge
Due to heavy sedimentation in the
channel it was necessary to install
this special construction. The
measurement operates reliably since
initial installation.
Guiding tube DN 100
Length 8m
Measurement in a full filled
recirculation line
A full filled recirculation pipe is on the
ground of a constantly filled denitrification
tank. The measurement in the filled tank
was desired to be accessible at any time.
The flow velocity sensor has been installed
in a guiding tube with a length of 8 m.
Recirculation pipe
DN800
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Typical areas of use
for OCM Pro CF
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wastewater treatment plants: inlet,
discharge, inlet to aeration tanks,
return sludge, recirculation, surplus
sludge, discharge from digester and
flocculant dosing point
permanent measurements on storm
water basin, storm water retention
basin, storm water sedimentation tank
direct discharger control, investigation
of extraneous water or leakage
industrial wastewater networks
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industrial flow measurements
irrigation systems
inlets and outlets conducting cooling
water or circulation systems
sluice stages in rivers
hydroelectric and thermic power
plants
measurement campaigns in channel
networks
MCERTS applications
and many more
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OCM Pro CF
NIVUS - the perfect Solution for each Application
Due to decades of experience and
knowledge of our engineers and
technicians almost impossible
applications are our challenge. If
desired, you can let us do the
complete planning and evaluation
of your measurement place.
Exemplified measurement tasks:
A flow measurement which is insensitive
to soiling and sedimentation without the
need to be cleaned frequently. The
measurements shown in the examples
have been developed in order to reliably
and accurately detect flow levels
considering fluctuations of sludge layers.
In this case OCM measurements with
combi wedge sensors have been used
which e.g. were placed on the water
surface by using vertically movable
“floats”.
The prevailing water level down to the
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sludge surface is going to be detected
by using the ultrasonic transit time
method.
The flow velocity sensor thanks to the
cross correlation provides the accurate
flow velocity profile and hence an
accurate image of the flow conditions
and the flow velocity in the channel.
You need an individual solution for your
measurement problem or you are
interested in more application examples
and references?
Just talk to us.
How the OCM Pro CF measures
Flow cannot be measured directly. Multiple factors are required to detect the flow
Q: average flow velocity and the flow
cross section. This leads to the general
formula below:
Q = v(average) • A
The flow cross section A is investigated by
continuously measuring the filling level
considering the channel shape. The flow
cross section and hence the flow changes
as soon as the level changes.
The flow velocity is detected via the velocity of the particles. Most media contain a
certain load of dirt particles or gas bubbles which move in the same velocity as
the liquid. The particle velocity is measured by using ultrasound. The flow changes as soon as the velocity changes.
h3
P h2
h1
Level Measurement (h)
Accurate flow measurement requires
precise and reliable level detection under
all hydraulic conditions. The development
of a level measurement system with
multiple redundancy is a result of our
many years of experience.
Combining hydrostatic measurement,
water-ultrasound and air-ultrasound
provides solutions for all measurement
tasks. External 4- 20 mA level sensors
such as NivuCompact or NivuBar Plus
can be connected additionally.
Based on the ultrasonic echo sounding
principle the flow height (water level) is
either going to be measured from the
bottom up [h1] in the liquid or from top
down [h3] using air-ultrasound.
The interface between water and air
(water surface) will be detected in both
cases and the sound transit time between
sensor and water surface is going to be
measured.
Foam or any other substances on the
water surface do not affect the measurement result.
In conditions where liquids are strongly
absorbant or the combi sensor is off-set
it is possible to measure the fill level by
using an optionally available built-in hydrostatic measurement [h2].
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OCM Pro CF
Qflow
vaverage
vmax
V
Flow velocity measurement (v)
The measurement method used for flow velocity investigation is based
on the principle of ultrasonic reflection. One of the most modern and
most efficient methods for the detection and calculation of the flow
velocity is the correlation method (interrelation between two similar
image patterns) by NIVUS.
A prerequisite to use this method are reflecting particles (minerals or gas
bubbles) contained in the liquid.
The measured velocities then can exactly be allocated spatially and
indicated as well.
The newly developed NIVUS-COSP technology turns the velocity measurement into a grid
measurement according to VDI/VDE. Using an
OCM Pro plus 3 sensors creates a measurement grid with 48 spatially allocated single velocities resulting in a high accurate flow measurement.
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patented
... using cross correlation
Existing reflectors (particles, minerals
or gas bubbles) are scanned using
a ultrasonic impulse with a defined
angle. The resulting echoes are
saved subsequently as images or
echo patterns.
Your benefits
Overlay of image patterns
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all particles are detected over the
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entire measurement beam
10
8
6
4
2
0
0
5
10
15
20
25
30
35
40
45
Dt
En
t
Windows 4 to 16
E4
Window 3
E3
Window 1
Window 2
Window 1
Stable readings
No calibration required
Direct indication of flow profiles
Measurement even in large profiles
For use with all flow cross sections
in full or partial filling
t
Window 2
E1
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Window 3
1. Scan
E2
E1 - E4 =
Reflecting particles
Highest possible accuracy, since
E1
E2
E3
2. Scan
t
E1
t1
Signal
evaluation
E2
E3
t2
E4
t3
Dt
0
1. Scan
A few milliseconds later a second
scan follows. The resulting echo
patterns are saved as well.
Windows 4 to 16
E3
Window 3
Window 2
E2
E1 - E4 =
Reflecting particles
E1
The NIVUS movie “The principle of flow
measurement” thoroughly explains the flow
velocity measurement using cross correlation.
Just watch on www.nivus.com
Window 1
v3
2. Scan
v2
0.8
v1
Determined flow profile
0.6
By correlating the saved signals, the
positions of unambiguously identifiable reflectors can be identified.
Since the reflectors have moved
with the liquid, they can be identified
at varying positions in the images.
1.0
En
E4
Considering beam angle and the impulse repeat rate it is possible to
directly compute the particle velocity
and hence the liquid flow velocity
from the temporal shift of the reflectors.
This allows to obtain high accurate
readings without performing additional
calibration measurements.
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0.4
96
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92
90
0.2
86
80
0.0
70
0.0
Flow profile indication on the display.
0.2
0.4
0.6
0.8
1.0
Measurement values can be directly
read on the display.
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OCM Pro CF
Always up-to-date
Evaluation with “NivuSoft”
Our latest software "NivuSoft" will inspire
you! You will be amazed at the ease of
use and how it combines all the
functions necessary for the processing
of measurement data in the water industry. Some of the features:
Operation / Programming
Data Storage
It is very easy to put the system into
operation and to recall data since the
large graphic display is clearly laid out
for its various applications.
The OCM Pro CF features an internal
circular memory with a capacity of 1MB
and allows to save readings covering
the past 90 days. The memory can be
extended to a capacity of 10 years by
additionally using a plug-in CF card.
Data can be read and evaluated easily
with the new “NivuSoft”.
Settings are clearly indicated on the
graphic display. This virtually eliminates
faulty programming.
Diagnostics
The status of analog and digital inputs
can be indicated and recalled directly.
System failures or irregularities which
might have occurred will be recorded as
well. Versatile diagnostic options enable
the choice of the best possible measurement place and error free operation of
the measurement system.
The clear program structure allows
to easily set parameters.
Recall the most important system data
on-site or comfortably on PC.
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visualisation and evaluation of
measurement data
calculating functions for weirs and
channels
comprehensive reporting options incl.
documentation of projects,
measurement places and
measurement data
As a particular highlight, NivuSoft
Professional allows the simulation of
flow parameters.
This feature enables to verify available
data for plausibility or to visualise and to
understand
relationships expected in practical use.
And what's best: the standard software
featuring a vast number of editing
functions is free for you to use!
On-site from anywhere
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complies with worldwide interface
standard using TCP/IP Ethernet
integrated web server
online access via Internet browser
without the need to install
additional software
Permanent online via GPRS
integrated data logger for high data
reliability
saved data can be read out via
Internet at any time
quick and comprehensive remote
diagnostics of entire measurement
place (online service)
The OCM Pro CF offers innovative communication options for
remote maintenance, remote diagnosis and data transfer as
standard. This is how to interconnect the latest measurement
technology worldwide at any time.
Remote control options enable to access any functions which are available
on site. The screen indicated is equal to
the on-site display.
Data can be transferred simply by one
mouse click. Internet connection enables the user to maintain, control and analyse several measurement places from
anywhere in the world simultaneously.
more on www.nivus.com.
• Measurement online
• D2W - Device to Web Internet portal
Using its integrated web server the
OCM Pro CF provides a dedicated website using TCP/IP. Besides being used
within internal networks this option allows the user to connect the unit to the
world wide web. Due to the specially designed operating system the unit is absolutely resistant to virus attacks.
Remote control options enable to access any functions which are available
on site.
test D2W
www.nivus.com
Log in using password or via demo account
test on www.nivus.com
D2W Internet portal - data management
with many options
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Wall mount enclosure, Type W0
Water-Ultrasonic Combi Sensors, Type POA
320
90
Transparent cover
4
Vector Profiler, Type CS2
Protective hose (optional)
40°
3
5.5
243.5
11
Sensor
cable
movable
22
Retaining
element
180° to flow
direction
M16x1.5
33
28
Protective cover
SW55
15.5
3
90°
237
68.5
12
236.7
17
45°
M16
ø35
G1½”
SW50
ø6.5
ø10.4
120
Memory Card
OCM Pro CF
(with stop ball valve)
45°
17.5
Type R2: 200 / Type R3: 300
Slotted holes for fastening on pipe mounting system
24
22.5
22
236
(207.5 without transparent cover)
40
258.5
Pipe Sensors
Type POA
74.8
335
70
Type CS2
Countersunk holes DIN66-5 (d1=6.5 mm) for direct fastening
Slotted holes for fastening on pipe mounting system
28
40
24
8
238
22
G1½"
Air-Ultrasonic Level Sensor, Type OCL
49
68.5
255
24
36
40
169.7
Transparent cover
OCM Pro CF
Memory Card
Ø 35
52
248
304.5
255.8 (227.3 without transparent cover)
254.5
movable
40°
Panel mount enclosure, Type F0
7.5
295
Retaining
element
180° to flow
direction
17.5
320
2.8
5
30
205
ø6.5
Dimensions in mm
Dimensions in mm
Supply power
Measurement
principle
100 to 240 V AC, +10 % /-15 %, 47 to 63 Hz
or 9 to 36 V
Power consumption
AC: 31 VA; DC: 34 W (14 W typical)
Wall mount enclosure material: Polycarbonate / weight approx. 3400 g
protection: IP65
Panel mount enclosure material: Polycarbonate / weight approx. 2900 g
protection: IP54 (front side) IP20 (reverse side)
Ex Approval
II(2)G [Ex ib] II B
Operating temperature -20°C to +50°C
Storing temperature
-30°C to +70°C
Max. Humidity
80 %, non-condensing
Display
back-lit graphic display,
128 x 128 Pixel
Operation
18 keys, menus in German, English,
French, Italian, Spanish, Polish,
Danish, Swedish
Inputs
1 x 4 - 20 mA for external level, 1 x RxTx-Bus
for NIVUS air-ultrasonic sensor Type OCL, up to
4 x 0/4 - 20 mA with 12 bit resolution for external level,
external setpoints and data storage
up to 4 digital inputs, up to 3 velocity sensors
Type POA or CS2
Outputs
up to 4 x 0/4 - 20 mA, load 500 Ohm,
12 bit resolution, up to 5 Relays/SPDT
Data memory
Compact Flash Card up to 128 MB
Storage cycle
1 to 60 minutes
Data transmission
Compact Flash Card, Modbus TCP via Ethernet with
integrated web server; connection via networks
(LAN / WAN, Internet), Internet via Ethernet
or optional via internal ISDN, GPRS or analog modem
NIVUS GmbH
Head office
Im Taele 2
75031 Eppingen, Germany
Phone: +49 (0)7262 9191 0
Fax: +49 (0)7262 9191 999
E-mail: info@nivus.com
Internet: www.nivus.com
ø6.5
M16x1.5
74.8
• cross correlation with digital pattern detection
for flow velocity measurement
• ultrasonic transit time for level measurement
• piezoresistive pressure meas. for level measurement
Meas. range (v)
-100 cm/s to +600 cm/s
Meas. range (h)
pressure 350 cm, ultrasound internal up to 500 cm
Meas. frequency
1 MHz
Protection
IP68
Ex Approval
II 2 G Ex ib IIB T4
Operating temp.
-20°C to +50°C (-20°C to +40°C in Ex Zone 1)
Storing temperature -30°C to +70°C
Meas. uncertainty deviation less than 1 %
Operating pressure max. 4 bar (combi sensor w. pressure cell max. 1 bar)
Cable length
up to 100 m, other lengths on request
Sensor types
POA or CS2 (for levels of several meters):
flow velocity using cross correlation
or flow velocity and level,
temperature measurement
level measurement using water-ultrasound (optional)
level measurement using pressure (optional)
OCL: level measurement using ultrasound
Constructions
wedge sensor for installation on channel bottom
pipe sensor incl. retaining element for installation in
pipes using a nozzle
Materials
Polyurethane, stainless steel 1.4571, PPO GF30, PA
(wedge sensor), PTFE (pipe sensor), Option: sensor
made of PEEK resistant to chemicals, Hastelloy mounting
plate; Titanium mounting plate; FEP-coated cable
The specifications above are extracts from the complete documentation.
You can find the complete specifications in the instruction manual.
NIVUS AG
8750 Glarus, Switzerland
Phone: +41 (0)55 6452066
E-mail: swiss@nivus.com
NIVUS Sp. z o.o.
81-212 Gdynia, Poland
Phone: +48 (0)58 7602015
E-mail: poland@nivus.com
NIVUS Ltd. (UK)
Leamington Spa, Warwickshire
Phone: +44 (0)1926 632470
E-mail: info@nivus.com
NIVUS Middle East (FZE)
Sharjah Free Zone, UAE
Phone: +971 6 55 78 224
Middle-East@nivus.com
NIVUS Austria
3382 Loosdorf, Austria
Phone: +43 (0)2754 567 63 21
E-mail: austria@nivus.com
NIVUS France
67770 Sessenheim, France
Phone: +33 (0)3 880716 96
E-mail: france@nivus.com
NIVUS Ltd. (UK)
Eaglescliffe, Cleveland
Phone: +44 (0)1642 659294
E-mail: info@nivus.com
NIVUS Korea Co. Ltd.
Gyeonggi-Do 415-843
Phone: +82 31 999 5920
E-mail: korea@nivus.com
Specifications subject to change. 10/2013 - 1,000 - FA
Specifications Sensors
13.35
Specifications Transmitter
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