Kobold DAB User manual

Operating Instructions
for
Flow Indicators for Vertical Installation
Model: DAB

DAB
page 2 DAB K02/0422
We don’t accept warranty and liability claims neither upon this publication nor in
case of improper treatment of the described products.
The document may contain technical inaccuracies and typographical errors. The
content will be revised on a regular basis. These changes will be implemented in
later versions. The described products can be improved and changed at any time
without prior notice.
© Copyright
All rights reserved.
1. Contents
1.Contents ........................................................................................................ 2
2.Note .............................................................................................................. 3
3.Instrument Inspection .................................................................................... 3
4.Regulation Use ............................................................................................. 3
5.Operating Principle ........................................................................................ 4
6.Mechanical Connection ................................................................................. 4
7.Maintenance ................................................................................................. 5
8.Replacement of the sight glass ..................................................................... 5
9.Technical Information .................................................................................... 5
10.Order Codes ................................................................................................. 6
11.Dimensions ................................................................................................... 7
Manufactured and sold by:
Kobold Messring GmbH
Nordring 22-24
D-65719 Hofheim
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.kobold.com

DAB
DAB K02/0422 page 3
2. Note
Please read these operating instructions before unpacking and putting the unit into
operation. Follow the instructions precisely as described herein.
The instruction manuals on our website www.kobold.com are always for currently
manufactured version of our products. Due to technical changes, the instruction
manuals available online may not always correspond to the product version you
have purchased. If you need an instruction manual that corresponds to the
purchased product version, you can request it from us free of charge by email
([email protected]) in PDF format, specifying the relevant invoice number and
serial number. If you wish, the operating instructions can also be sent to you by
post in paper form against an applicable postage fee.
The devices are only to be used, maintained and serviced by persons familiar with
these operating instructions and in accordance with local regulations applying to
Health & Safety and prevention of accidents.
When used in machines, the measuring unit should be used only when the
machines fulfil the EC-machine guidelines.
3. Instrument Inspection
Instruments are inspected before shipping and sent out in perfect condition.
Should damage to a device be visible, we recommend a thorough inspection of the
delivery packaging. In case of damage, please inform your parcel service /
forwarding agent immediately, since they are responsible for damages during
transit.
Scope of delivery:
The standard delivery includes:
 Flow Indicators for Vertical Installation model: DAB
4. Regulation Use
Any use of the device, which exceeds the manufacturer’s specification, may
invalidate its warranty. Therefore, any resulting damage is not the responsibility of
the manufacturer. The user assumes all risk for such usage.

DAB
page 4 DAB K02/0422
5. Operating Principle
Flow-through sight glasses with sight glass cylinders and flanges are designed for
monitoring fluid in pipelines. It also can be equipped with a swimming ball, e.g.
made of polypropylene (PP).
6. Mechanical Connection
Before installation:
• Remove all transport protections and make sure that there are no
packaging parts in the device.
• Handling flow-through sight glasses with sight glass cylinders and flanges
requires special care.
• Make sure that the permitted max. operating pressures and operating
temperatures of the device must not be exceeded (see technical data).
• The materials of the flow-through sight glasses and flanges must
be compatible with the media in contact with them.
• Install the flowmeter in the pipeline without tension.
• Protect the measuring tube from damage from the outside.
• Avoid pressure surges in the measuring tube e.g. by quickly shutting off the
flow.
• After the mechanical installation it should already be checked, whether the
connection fitting / pipe is tight (see chapter Commissioning), if possible.
• If fire occurs, sealing is not guaranteed.
The installation must be carried out in a pressureless state. Dangerous liquids,
gases or vapors should be drained. The installation should be tension-free. The
pressure and temperature limits must be observed.
When installing in pipelines, please note:
1. Connections must be parallel to each other, so that a distortion of the housing
is avoided.
2. Before installation, the pipes must be thoroughly cleaned
3. Rinse and dry the instrument
During commissioning, pay attention to leaks and eliminate the leaks by
retightening the fastening elements. The system should be tested with a maximum
of 1.1 times the nominal pressure.

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DAB K02/0422 page 5
7. Maintenance
Before servicing, ensure that the unit is depressurised, that no medium is present
and that the working temperature is <40 ° C. The cleaning should be done carefully
with a clean cloth. Scratches, especially on glass components, should be avoided.
The sight glasses with sight glass cylinder and flanges must be stored clean and
dry at temperatures between -10 ° C and +40 ° C.
8. Replacement of the sight glass
After interruption of the liquid flow, the flange connection can be released and the
instrument removed. When replacing glass components always replace the
associated sealing elements. Before installing the new glass and gaskets, clean
the sealing surfaces from any contamination. If the glass and gaskets are correctly
inserted, the instrument can be placed back in the pipeline and the flange
connection made
9. Technical Information
Material
Thread connection: red cast iron RG-5
Supports: red cast iron RG-5
Glass: Borosilicate glass
Sealing: PTFE
Threaded bolts: brass MS-58
Ball 15 and 20mm: PA 6.6
density 1.13 g/cm3
Ball 30, 40 and 50 mm: rubber
density 1.46 g/cm3
Threaded bolts: according to flow range
Maximum operating pressure: 10 bar
Operating temperature: -200 °C / + 230 °C (PTFE seals)

DAB
page 6 DAB K02/0422
10. Order Codes
Example: DAB-1101HR20
Connection thread
G
DAB
without ball
DAB
with ball
G½ DAB-1100HR15 DAB-2100HR15
G¾ DAB-1101HR20 DAB-2101HR20
G1 DAB-1102HR25 DAB-2102HR25
G1¼ DAB-1103HR32 DAB-2103HR32
G1½ DAB-1104HR40 DAB-2104HR40
G2 DAB-1105HR50 DAB-2105HR50
G2½ DAB-1106HR65 DAB-2106HR65
G3 DAB-1107HR80 DAB-2107HR80

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DAB K02/0422 page 7
11. Dimensions
Model Pmax t
max G Height
H
[mm]
Glass
cylinder
D x length
[mm]
Weight
[kg]
Ball diameter
[mm]
DAB-..00HR15 6 bar 100 °C G½ 92 16.5 x 50 0.5 10
DAB-..01HR20 6 bar 100 °C G ¾ 137 32 x 100 0.65 15
DAB-..02HR25 6 bar 100 °C G1 145 40 x 100 0.95 20
DAB-..03HR32 6 bar 100 °C G1¼ 145 40 x 100 1.1 20
DAB-..04HR40 6 bar 100 °C G1½ 145 50 x 100 1.18 20
DAB-..05HR50 6 bar 100 °C G2 150 60 x 100 1.25 30
DAB-..06HR65 6 bar 100 °C G2½ 150 70 x 100 1.76 40
DAB-..07HR80 6 bar 100 °C G3 195 90 x 100 3.95 50