Post on 08-Feb-2018
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ial device Help
Creating connection
With worldwide TCP/IPcommunication !
OCM Pro CF
High accurate Flow
Measurement in
Channels, part filled
and full Pipes as wellas in Flumes and
S u r f ac e Wa t e r B o d i es
Sira M C110189/00
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OCM Pro CF
New in the Flow Measurement Area
NIVUS flow measurement technology stands for innovation and high
accuracy.
The new OCM Pro CF is a permanent measurement system forcontinuous flow measurement, flow control and storage of recorded
data in a range from slight to heavily polluted media of variousconsistencies.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 andmore economic operation.
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Lift-up mechanism for inspection purposes or for sensor removal under operational conditions
Overview on Transmitter Details
very high accuracy
measures the real flow velocity
profile
spatial allocation of 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
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 cardworldwide TCP/IP communication
online connection/data transmission
and remote maintenance via Internet
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Pipe sensor
Water-ultrasonic sensor
Air-ultrasonic sensor
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no modific ations or additional c on-
s truc tions at plac e of ins tallation
c ables c an be ex tended without any
problem s
triple redundant lev el m eas urem ent
(air-ultras ound, water-ultras ound,
hy dros tatic )
m eas urem ent dy nam ic s between
5 m m/ s a n d 6 m / s
m eas ures in both flow direc tions
highly m edium -res is tant s tandard
s ens ors (PPO, PEEK, 1.4571,
Has telloy C276)
s ens ors res is tant to c hem ic als forhighes t dem ands
Ex approv al z one 1 as ATEX
p r o t ec t i o n r at i n g I P 6 8
A complete OCM Pro CF measurement place consists of a transmitter and appro-priate 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.
Sensors - high accuracy and universal use
OCM Pro CF
The wedge sensor operates absolutely
reliably despite heavy soiling.
Simple pipe sensor mounting.
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Guiding tube DN 100Length 8m
Recir culation pipeDN800
S t a nd a r d s e n s o r i n s t al l e d
on a wedge
Flow measurement in rectangular
channel of a sewage treatment plant
Successful in use anywhere
Typical areas of usef or O CM Pr o CF
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was tewater treatm ent plants : inlet,
dis c harge, inlet to aeration tank s ,
return s ludge, rec irc ulation, s urplus
s ludge, dis c harge from diges ter and
floc c ulant dos ing point
perm anent m eas urem ents on s torm
water bas in, s torm water retention
bas in, s torm water s edim entation tankdirec t dis c harger c ontrol, inv es tigation
of ex traneous water or leak age
indus trial was tewater network s
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i n d u st r i a l f l o w m e a su r e me n t s
irrigation s y s tem s
inlets and outlets c onduc ting c ooling
water or c irc ulation s y s tem s
s luic e s tages in riv ers
hy droelec tric and therm ic power
plants
m eas urem ent c am paigns in channelnetwork s
M C E RT S a p p l i ca t i o n s
and m any m ore
Due to heavy vorticity 3 sensors have been
installed. Since initial start-up in December
2001 the measurement runs without
interruption.
Due to heavy sedimentation in the
c h a nn e l i t w a s n e c es s a ry t o i n s t a l l
t h i s s p e ci a l c o n st r u c ti o n . T h e
measurement operates reliably since
initial installation.
M easurement 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.
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OCM Pro CF
NIVUS - t h e p e r fe c t S o l ut i o n f o r e a c h A p p l i ca t i o n
Exemplified measurement tasks:A flow m eas urem ent whic h is ins ens itiv e
to s oiling and s edim entation without the
need to be c leaned frequently . The
m eas urem ents s hown in the ex am ples
hav e been dev eloped in order to reliably
a n d a cc u r at e l y d e t e ct f l o w l e v e l s
c ons idering fluc tuations of s ludge lay ers .
In this c as e OCM m eas urem ents with
c om bi wedge s ens ors hav e been us ed
whic h e.g. were plac ed on the water
s urfac e by us ing v ertic ally m ov able
floats .
The prev ailing water lev el down to the
Due to decades of experience andk n ow l ed g e of o ur e n gi n ee r s an dt e c h n i c i a n s a l m o s t i m p o s s i b l ea p p l ic a t i o ns ar e o u r c h a l le n g e . I f
desired, you can let us do thecomplete planning and evaluationo f y o u r m e a s ur e m e nt p l a c e .
s ludge s urfac e is going to be detec tedby us ing the ultras onic trans it tim e
m ethod.
The flow v eloc ity s ensor thank s to the
c ros s c orrelation prov ides the ac c urate
flow v eloc ity profile and henc e an
ac c urate im age of the flow c onditions
and the flow v eloc ity in the c hannel.
You need an indiv idual s olution for y our
m eas urem ent problem or y ou are
interes ted in m ore applic ation ex am ples
and referenc es ?
Just talk to us.
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h1h2
h3
P
How the OCM Pro CF measures
The quantity >>flow "Q"
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GPRS
Solar
OCM Pro CF
Flow Velocity Measurement
The OCM Pro CF in conjunction with the new combi sensors has the
ability to carry out high accurate flow measurements.
The principle of flow velocity determination is based on the ultrasonicreflection principle. One of the latest and most efficient methods for flow
velocity detection is the correlation method (interrelation between twosimilar image patterns). A prerequisite for being applied is the existenceof reflecting particles (solids, minerals or gas bubbles) in the fluid.
This allows to exactly allocate the measured velocities spatially and toindicate the results.
vmax
vaverage
V
Qflow
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t0 5 10 1 5 20 25 30 35 40 4 50
2
4
6
8
10
12
t
98
96
9492
90
86
0.0 0.2 0.4 0.6 0.8 1.0
80
70
0.
0
0.
2
0.
4
0.
6
0.
8
1.
0
Vy(t-t)
x(t)
( ) dt)t(g)t(fT
1lim2/T
2/Tt
fg +
+=
Formula
Flow profile directly indicatedon the display.
Values can be read directlyon the display.
By using the cross correlation method
the characteristic echo image patterns
within the time slots are now checked
for compliance.
The temporal shift between the echo
image patterns from both scans is going
to be investigated.
This comparison allows to directly con-
vert the flow velocities prevailing within
the single measurement windows consi-
dering the beam angle.
An ultrasonic converter (sensor) sendsan ultrasonic burst into the medium.
The particles or gas bubbles in the medi-
um reflect this impulse.
The sensor operates in impulse-echo
mode, i.e. the ultrasonic converter will
switch to receiving mode immediately
after transmitting the burst, receiving
the reflected ultrasonic echo as a cha-
racteristic echo image pattern.
A spatial allocation can be derived thanks
to the transit time of the ultrasonic impul-
se and the sound velocity.
These echo patterns from the first scan
will be digitised and saved.
During the second scan, an ultrasonic
burst will be sent again and the reflected
echo pattern will be saved as well.
This procedure will be repeated up to
2000 times per second. The flow profile
will be determined from the individual ve-
locities in real time by the integrated digi-
tal signal processor (DSP).
This allows the user to obtain measure-
ment values with the highest accuracy
without additional calibration.Overlay of image patterns
v3
v2
v1
Investigated flow profile
... thanks toCross Correlation
E1 Measurement window 1
Measurement window 2
Measurement window 3
E Measurement windows 4 - 16n
E2
E3
E4
E1 - E4 =Reflecting particels
1. Scan
E1
E2
E3
E4
2. Scan
Measurement window 1
Measurement window 2
Measurement window 3
E Measurement windows 4 - 16n
E1 - E4 =Reflecting particels
t3
E3
E3 E4
t1
E1
E1
t
t
t2
1. Scan
2. Scan
Signalevaluation
E2
E2
t
Window 3Window 2Window 1
0
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OCM Pro CF
The OCM Pro CF comes with the free
evaluation software NivuDatwhich, besi-
des using other common spreadsheet
applications, allows the indication of
measurement data such as graphs or
tables under Windows XP / Windows
2000 quick and clearly.
This ensures the read-out of saved raw
data very reliable. Additional processing
functions such as sequential data export,
averaging, output of min. and max. valu-
es, measurement place management
and more complete the program.
Evaluation
Any of the recorded readings as well
as up to 4 additional external analog
signals can be saved in free intervals
if the OCM Pro CF has been equipped
with a Compact Flash card.
Data can be read and evaluated easily.
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 measure-
ment place and error free operation of
the measurement system.
Data Storage
Diagnostics
Recall the most important system dataon-site or comfortably on PC.
Settings are clearly indicated on the
graphic display. This virtually eliminates
faulty programming.
Operation / Programming
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.
Always up-to-date
The clear program structure allowsto easily set parameters.
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Using its integrated web server the
OCM Pro CF provides a dedicated web-
site using TCP/IP. Besides being used
within internal networks this option al-
lows the user to connect the unit to the
world wide web. Due to the specially de-
signed operating system the unit is abso-lutely resistant to virus attacks.
Remote control options enable to ac-
cess any functions which are available
on site.
The OCM Pro CF offers innovative communication options forremote maintenance, remote diagnosis and data transfer as
standard. This is how to interconnect the latest measurementtechnology worldwide at any time.
On-sitefrom anywhere
complies with worldwide interface
standard using TCP/IP Ethernet
integrated web server
online access via Internet browser
without the need to install
additional software
integrated data logger up to 128 MB
saved data can be read out
via Internet at any time
operation and parameter setting
online (remote control)
quick and comprehensive remotediagnosis of entire measurement
place (online service)
Integrated
WebServ
er
The screen indicated is equal to the on-
site display.
Data can be transferred simply by one
mouse click. Internet connection enab-
les the user to maintain, control and ana-
lyse several measurement places fromanywhere in the world simultaneously.
Visit www.nivus.com
and check out communication with
our new OCM Pro CF
www.nivus.com
Log in using your pass-word on www.nivus.com
Connection to measure-ment place will be set up
Select displaymode
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p
i
t
a r
j e c
n
5
4 .
0 1
S
e c f i c a i o n s
e s u b
t t o c h a
g e .
1
. 0
2
0
Supply power 100 to 240 V A C, + 10 % /-15 %, 47 to 63 Hz
o r 2 4 V D C 1 5 % , 5 % r es i du a l r i pp l e
Power consumption max. 20 VA
Material/Weight Polycarbonate, approx. 3400 g
Protection IP 65
Ex Approval II(2)G [Ex ib] II B
O pe ra ti ng te mp er at ur e - 20 C t o + 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 button keypad, menus in German, English,
French, Italian, Spanish, Polish, Danish, ...
Inputs 1 x 4 - 20 mA for external level
1 x RxTx-Bus for NIVUS air-ultrasonic sensor
Type LUS
up to 4 x 0/4 - 20 mA with 12 bit resolution for
e x t er n a l l e v el , e x t e r n a l s e t p oi n t s a n d
data storageu p t o 4 d i g i t al i n p ut s
up to 3 velocity sensors
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
D at a t ra ns mi ss io n C om pa ct F la sh C ar d, T CP /I P v ia E th er ne t
and modem (GPRS, ISDN, analog)
Connection Modbus TCP a nd TCP/IP v ia Ethernet
and modem (GPRS, ISDN, analog)
Transmitter
Yo u c a n fin d mo r e in fo r ma tio n in th e in s tr u c tio n ma n u al o r o n www.niv us .c om
Specifications
Sensors
NIVUS GmbH NIVUS AG NIVUS Sp. z o.o. NIVUS Fr anceIm Taele 2 Hauptstrasse 497 50 31 Ep pi ng en , G er ma ny 8 75 0 Gl ar us , Sw it ze rl an dP h o ne : + 49 ( 0 ) 7 2 62 / 91 9 1 - 0 P h o n e: + 4 1 ( 0) 5 5 / 64 5 2 0 6 6 P h o n e: + 4 8 (0 ) 5 8 / 7 6 0 2 0 1 5 P h o n e: + 3 3 (0 ) 3 8 8 0 7 1 6 9 6F ax : + 49 (0 ) 7 2 6 2 / 91 91 - 9 99 F ax : + 41 (0 ) 5 5 / 64 5 2 0 1 4 F ax : + 48 (0 ) 5 8 / 76 0 2 0 1 4 F ax : + 33 (0 ) 3 88 07 16 97E -mai l: i nf o@n iv us .co m E -ma il : sw iss @n ivu s. co m E -ma il : po lan d@ niv us .c om E -ma il : fra nce @n ivu s. co mInternet: www nivus de Internet: w ww nivus de Internet: ww w nivus pl Internet: ww w nivus com
N I V U S U . K .ul. Hutnicza 3 / B-18 14, rue de la Paix P.O. Box 342, Egerton, Bolton8 1- 212 Gd yn ia , P ol an d 6 77 70 Ses se nh eim , F ra nc e La ncs . B L7 9W D, U.K .
Phone: +44 (0) 1204 591559Fax: +44 (0) 1204 592686E-mail: info@nivus.comInternet: www nivus com
M e a su r e m en t p r in c i p le u l t r as o n ic t r a ns i t t im e ( l ev e l /h e i g ht )
piezoresistive pressure meas. (level/height)
correlation with digital pattern detection
( f l o w v e l oc i t y)
Measurement deviation less than 1 %,
uncertainty
pipe sensor incl. retaining element for
installation in pipes
M e as u re m en t r an g e (v ) - 1 m /s t o + 6 m /s
M e a su r e m en t r a n ge ( h ) p r e s su r e 3 . 5 m; u l t r as o n ic 2 m
Measurement frequency 1 MHz
Protection IP 68
Ex Approval II 2 G Ex ib IIB T4
O p er a ti n g t e mp e ra t ur e - 2 0 C t o +5 0 C ( - 20 C t o + 4 0 C i n E x Z o ne 1)
S to ri ng t em pe rat ur e - 30 C b i s + 70 C
(in case of compliance with specific conditions)
Operational pressure max. 4 bar (combi sensor with pressure
measurement cell max. 1 bar)
Cable length max. 100 m, other lengths on request
Sensor types V100 flow velocity sensor (v; temperature)
V1H1 combi sensor (v meas., level meas.using
water-ultrasound and temperature meas.)V1D0 combi sensor (v meas., level meas. using
pressure and temperature meas.)
V1U1 combi sensor (v meas., level meas. using
water-ultrasound and redundancy using pressure
and temperature measurement)
Constructions wedge sensor for installation on channel bottom
Materials Polyurethane, stainless steel 1.4571, PPO GF30,
PA (only wedge sensor),
HDPE (only pipe sensor)
Option PEEK, Hastelloy C276 ground plate;
Titanium ground plate; FEP-coated cable
Transmitter
2 3 6 . 7
70
236
( 2 0 7 . 5 w it h o u t t r a n s pa r e n t c o v e r )
T r a ns p a r e n t c o v e r
2 8
11
4
MemoryCard
258.5
243. 5
1 2 0
9 0
5. 5
1 3
. 3 5
OCMProCF
A ll dimensions in mm
Water-UltrasonicC o m b i S e n s or
Air-UltrasonicL e v e l S e n s or
Pipe Sensor
24
2 2
. 5
1 7 . 5
2 3 7
3 2 0
12 17
M 1 6
3
Slottedholesfor
fasteningonpipemountingsystem
Counter
sunkholesDIN
66-5,butwith
d1=
6.5mm,fordirectfastening
40
9 0
6
. 5
1 0
. 4
3 2 0
2 5 4
. 5
31
24
7 . 5
Threea
dapterplatesarerequiredforfasteningon
pipemountingsystem.
1 7 . 5
40
3
M16
4 5
4 5
35
G 1
TypeR2:200/
TypeR3:300(withstopballvalve)
1 5 . 5
74. 8
a l i g n me n t s c r e wM4 x 8 0( i n s t a l l a t i o n h e l p )
r e t a i n i n ge l e me n t
SW55
M1 6 x 1 , 5
2 2
2 2
6 8
. 5SW5 0
movable
A ll dimensions in mm
Counter
sunkholesDIN
66-5,butwith
d1=
6.5mm,fordirectfastening