Intra Automation Itabar IBF User manual

Type IBF
Contents:
1.Principle of flow measuring with ITABAR-Flow-Sensor..............................................................................2
2.Product Description........................................................................................................................................2
3.Operating Conditions .....................................................................................................................................2
4.Pre-Installation Checks...................................................................................................................................2
5.General installation notes...............................................................................................................................2
6.Installation of the ITABAR Sensor................................................................................................................6
7.Installation of the Attachments and the Dp-transmitter..................................................................................8
8.Measurement Start-Up ...................................................................................................................................9
9.Preventive Maintenance.................................................................................................................................9
10.Trouble Shooting..........................................................................................................................................9
INTRA-AUTOMATION GmbH
Meß- und Regelinstrumente
Otto-Hahn-Straße 20
41515 Grevenbroich
Tel.: [phone] - 0
Fax: [phone]
Internet: www.intra-automation.de
E-Mail: [email protected] BA_IBF_en_041201.DOC

ITABAR Flow Sensor Type IBF Operating Manual
2
1. Principle of flow measuring with
ITABAR-Flow-Sensor
If there will be insert a sensor rounded on the face in
a parallel stream with velocity w, damming up of the
fluid will be the result. In the middle of this area are
streamlines, called damming up streamlines, which
will be vertical to the sensor. Velocity of the flow
becomes approximately zero at this significant point.
Everytime damming up streamlines are laminar. In
this case flow measurement can be handle very easy
(no friction):
Using the term of Bernoulli, you can calculate:
p
ges = pstat + ½ w².
With the patented profil of the ITABAR-Flow-
Sensor you can measure the total pressure pges
upstreams and the static pressure pstat downstreams.
The difference between static and total pressure is:
w = (2/ρpdyn)½.
By knowing the innerside pipe diameter it applies to
the term of continuity:
V ∼w A.
Using a proportional factor, called correction factor
k, you can calculate in accordance with the
following formula:
V = k w A or m = k ρw A.
This correction factor k is a value only depending on
the ITABAR-Flow-Sensor-Profil. This value had
been find out by INTRA-AUTOMATION empiri-
cally.
2. Product Description
We congratulate you on your purchase of an
ITABAR Flow Sensor type IBR.
When installed properly, the ITABAR sensor offers
an array of advantages over other measurement
systems with respect to its accuracy, pressure loss,
and installation. The following guide line is
designed to help you with the sensor installation and
operation.
3. Operating Conditions
ITABAR Flow sensors type IBF can be used under
the following conditions:
• Operating pressure: max. 320 bar
• Operating temperature: -50°C to +1000°C
• Nominal Pipe Diameters: DN 40 to DN 12000
The sensor material and the mounting hardware can
be specially selected to accommodate spezial
operating conditions. (e.g. corrosive media or
extreme temperatures).
4. Pre- Installation Checks
Before installation, make sure that all of the
following parts are included in the sensor kit:
- ITABAR sensor, type IBF
- Mounting flange with weld stud
- Gasket for mounting flange
- Bolts and nuts
- Sensor end support, closed or with sealing plug
(for IBF-21, 26, 36 and IBF-66 only)
- Instrument valve assembly (if ordered)
Compare the specifications on the type identification
plate on the sensor with your order form.
The identification plate contains the following in-
formation:
• Serial number
• Type name
• Pipe inside diameter
• TAG number
(Measuring location number - if furnished)
• Material
• Flow range
ATTENTION!
You must make sure that the pipe inside diameter
given on the identification plate matches your pipe
diameter.
5. General Installation Notes
In order to obtain optimal measurement results,
follow the notes concerning the installation of the
ITABAR sensor given below.
5.1 Determination of Pipe Arrangement
For design reasons, the pipe arrangement at the
installation location has to be known before the sen-
sor is manufactured.
On sensors for horizontal pipe arrangements the
instrument connections are placed in-line with the
flow direction. (see figure 1)
For vertical pipe arrangements, the connecting studs
for the measurement of the differential pressure are
arranged at 90°C angle to the flow direction. (see
figure 2)
Differential Pressure Tap
Fig. 1: Horizontal pipe run

ITABAR Flow Sensor Type IBF Operating Manual
3
Fig. 2: Vertical pipe run
The flow direction is indicated in each case by the
arrow on the sensor head.
5.2 Vertical Pipe Arrangement
The ITABAR sensor for flow measurement of
liquids and gases can be installed in vertical pipe
runs at any location, however, the instrument
connections have to be located in the same
horizontal plain (see figure 3).
Fig. 3: Installation for vertical pipe run for liquids
or gases
5.3 Horizontal Pipe Arrangement
Liquids:
For flow measurements of liquids, the ITABAR
sensor must be installed in the lower half of the pipe
circumference; the connections to the instruments
have to be located below the pipe axis. This way,
gas or air bubbles which may have found their way
into the connections or the instruments will return
into the flowing liquid. (see figure 4)
Fig. 4: Installation in horizontal pipe runs for
liquids
Gases:
For flow measurements of gases, the ITABAR
sensor must be installed in the upper portion of the
pipe diameter. This will prevent moisture or
condensation from entering the instrument
connections and altering the measurement. (see
figure 5)
Fig. 5: Installation in horizontal pipe runs for gases
5.4 Misalignment

ITABAR Flow Sensor Type IBF Operating Manual
4
The ITABAR sensor operates on the basis of simple
physical principles.
Its design incorporates no moving parts which are
subject to wear.
Fig. 6
The sensor is not affected by being slightly out of
alignment.
The influence on the accuracy of the measurements
is negligible as long as the limits indicated in
Figures 6, 7 and 8 are not exceeded.
Fig. 7
Fig. 8

ITABAR Flow Sensor Type IBF Operating Manual
5.5 Required Undisturbed Pipe Run Lengths
(in multiples of D)
The accuracy of the measurements of the ITABAR
sensor depends on the development of a stream
profile which should be as undisturbed as possible.
Therefore the selection of the installation location
within the pipe run is of considerable importance.
The following tried and true hints regarding the
required pipe lengths ahead of and behind the sensor
are designed to help you in your selection of the
most advantageous installation location.
As a general rule, regulating valves, throttle valves,
and gate-type valves should be installed behind the
sensor.
NOTE:
If the recommended straight pipe run lengths are not
available, the measuring accuracy can be adjusted to
the specific conditions of the measuring stretch by
conducting a comparison measurement.
The measurement guarantees that the differential
pressure corresponds to the true flow velocity,
thereby assuring the specified accuracy.
Details can be requested from the manufacturer.
D=Pipe Diameter A=Upstream B=Downstream
7 3
9 3
17 4
18 4
Restriction in the Pipe Run
7 3
Widening of the pipe Run
7 3
Regulating Device
24 4
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ITABAR Flow Sensor Type IBF Operating Manual
6. Installation of the ITABAR-Sensor
Observe the general installation notes!
It is particularly important to make sure that the
distance from the gasket surface to the pipe agrees
with H- dimension you gave in your order (see Fig.
9).
Fig. 9
ITABAR sensors of the type IBF come with the
following standard H- dimensions:
IBF-20 80mm
IBF-25/26 127mm
IBF-35/36 150mm
IBF-65/66 146mm
6.1. Installation of Type IBF-20
1. Drill a hole of 18mm diameter into the pipe.
2. Tack the mounting stud onto the pipe leaving a
clearance of 1-2mm. The bolt holes of the flange
must be at 45° angles to the pipe axis (see Fig. 10)
Fig. 10
3. Observe the H- dimension during the welding of
the mounting stud (see alsoFig. 9).
4. Check the alignment of the mounting stud again.
Then the finish weld can be made.
5. Now the ITABAR sensor can be installed into the
pipe. Place the included gasket on the gasket surface
of the flange. Insert the sensor into the welded stud
and make sure that the arrow on the sensor head
point in the flow direction. Tighten the bolts and
nuts.
Note:
On flanges with eight bolt holes, the welding stud
must be welded on, so that the bolt holes in the
flange form an angle of 22,5° with the pipe axis (see
Fig. 11).
H
Fig. 11
6.2 Installation of Type IBF-21
The design of the ITABAR sensor of the type IBF-
21 is almost identical to the type IBF-20. The only
difference is the sensor end support (with sealing
plug or closed design) on the type IBF-21 (see Fig.
12) which permits higher stream velocities in the
pipe.
Except for installation of the sensor end support, the
installation steps are identical to those for type IBF-
20.
Installation of the end support:
1. Install the welded stud as already described under
6.1.
2. Take a cord and tie one end around the existing
weld stud. Wrap the other end of the cord around the
pipe. Mark the half- way point of the pipe
circumference on the pipe.
3. Now drill a second hole of 18mm diameter into
the pipe.
4. Remove the sealing plug (if present) of the sensor
end support. Tack the sensor end support onto the
pipe leaving approximately 2mm clearance.
5. Insert the sensor into the pipe and check the
alignment of the sensor end support. If necessary,
correct the alignment.
6. Now the finish weld can be performed.
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ITABAR Flow Sensor Type IBF Operating Manual
Fig. 12
7. For sensor end support with sealing plug
only:Seal the thread of the sealing plug with a
suitable sealing compound (e.g. PTFE tape). Screw
the sealing plug into the sensor end support and
tighten it firmly.
Fig. 12a
8. Perform the installation of the sensor into the pipe
according to the instructions given in chapter 6.1.
6.3 Installation of Type IBF-25
1. Drill a hole of 35mm diameter into the pipe.
The subsequent Stepps correspond to the installation
of the ITABAR sensor type IBF-20 !
Oberserve the H- dimension during the welding!
(see also Fig. 9)
6.4 Installation of Type IBF-26
1. Drill a hole of 35mm diameter into the pipe.
The subsequent Stepps correspond to the installation
of the ITABAR sensor type IBF-21 !
Oberserve the H- dimension during the welding!
(see also Fig. 9)
6.5 Installation of Type IBF-35
1. Drill a hole of 40mm diameter into the pipe.
The subsequent Stepps correspond to the installation
of the ITABAR sensor type IBF-20 !
Oberserve the H- dimension during the welding!
(see also Fig. 9)
6.6 Installation of Type IBF-36
1. Drill a hole of 40mm diameter into the pipe.
The subsequent Stepps correspond to the installation
of the ITABAR sensor type IBF-21 !
Oberserve the H- dimension during the welding!
(see also Fig. 9)
6.7 Installation of Type IBF-65
1. Drill a hole of 60mm diameter into the pipe.
The subsequent Stepps correspond to the installation
of the ITABAR sensor type IBF-20 !
Oberserve the H- dimension during the welding!
(see also Fig. 9)
6.8 Installation of Type IBF-66
The design of the ITABAR sensor of the type IBF-
66 is almost identical to the type IBF-21. The only
difference is the sensor end support (delivered in
two pieces). After successful installation of the end
support, the end cap must be weld onto the end
support.
1. Drill a hole of 60mm diameter into the pipe.
The subsequent Stepps correspond to the installation
of the ITABAR sensor type IBF-21 !
Oberserve the H- dimension during the welding!
(see also Fig. 9)
Note !
On long sensors, an installation aid can be screwed
into the ½” thread of the sensor end (e.g. threaded
pipe). This will make it easier to insert the sensor
into the opening of the sensor end support and align
the sensor.
7. Installation of the Attachments and the
∆p-Transmitter
7.1 Instrument valves
The instrument valves for the differential pressure
lines are pre- installed by the manufacturer, if it is
part of the order.
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ITABAR Flow Sensor Type IBF Operating Manual
When installing multi- directional valve block, make
sure that all bolts are tightened uniformly and
opposite bolts are tightened in sequence.
7.2 ∆p-Transmitter:
For liquid measurements, the differential pressure
transmitter should always be installed below the
ITABAR sensor in order to avoid the occurrence of
air bubbles in the instrument connections (see
Fig. 13).
Fig. 13
When measuring dry gases and air, the differential
pressure transmitter should always be installed
above the ITABAR sensor in order to avoid
measurement degradation due to condensation and
presence of solid particles (see Fig. 14).
Fig. 14
7.3 ITABAR sensor with flange plate
By using of the flange plate version, you can
mounting the ∆p-transmitters direct onto the flow
senor (s. fig. 15). By this version you don`t must
install differential pressure lines and screwed
connections. In combination with a multi-
directional valve block is this version the best
solution.
When installing multi- directional valve blocks,
make sure that all bolts are tightened uniformly and
opposite bolts are tightened in sequence.
Abb. 14
Fig. 15
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ITABAR Flow Sensor Type IBF Operating Manual
8. Measurement Start-Up
Make sure that:
- all installation openings are closed
(sensor end support IBF-21 / 26 / 36 / 66).
- all installed parts are securely bolted together.
- all instrument valves are closed.
Now the pipe can be cleared for the appropriate
medium
Check all connections, especially the flanges
Then open the instrument valves to the ∆p-transmitter.
9. Preventive Maintenance of the ITABAR-
Sensors
ITABAR sensors are insensitive to dirt and soil
build-up and therefore nearly maintenance-free.
10. Trouble shooting
If, after the start-up of the ITABAR sensor, any
measuring errors occur, they may possibly be
corrected quite easily:
error:
No differential pressure indication.
Correction:
Check whether all instrument valves to the ∆p
transmitter are opened.
Check the alignment of the sensor with the pipe. The
arrow on the sensor must point exactly in the flow
direction (downstream).
Note:
With highly corrosive media it is possible (if the
sensor material has been specifically selected for
such operating conditions) that a connection
between the plus and minus sides has been formed.
This can only be checked after removal of the sensor
from the pipe. Close the holes in the sensor rod and
blow through both minus and plus connections of
the sensor (e.G. with pressurized air). If air emerges
from the opposite connection, the sensor is
defective. In this case, please notify the
manufacturer.
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