WIKA BNA Operating Instructions Manual
DE
EN
Operating instructions
Betriebsanleitung
Bypass level indicator, model BNA
Bypass-Niveaustandsanzeiger, Typ BNA
Bypass level indicator, model BNA with option level sensor and magnetic switch
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Operating instructions bypass level indicator, model BNA
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EN
Operating instructions model BNA Page 3 - 18
Betriebsanleitung Typ BNA Seite 19 - 33
© 04/2015 WIKA Alexander Wiegand SE & Co. KG
All rights reserved. / Alle Rechte vorbehalten.
WIKA® and KSR® are registered trademarks in various countries.
WIKA® und KSR® sind geschützte Marken in verschiedenen Ländern.
Prior to starting any work, read the operating instructions!
Keep for later use!
Vor Beginn aller Arbeiten Betriebsanleitung lesen!
Zum späteren Gebrauch aufbewahren!
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Declarations of conformity can be found online at www.wika.com.
Contents
Contents
1. General information 4
2. Design and function 5
3. Safety 5
4. Transport, packaging and storage 10
5. Commissioning, operation 10
6. Faults 13
7. Maintenance and cleaning 14
8. Dismounting, return and disposal 15
9. Specications 16
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Operating instructions bypass level indicator, model BNA
1. General information
■
The bypass level indicators described in the operating instructions
have been designed and manufactured using state-of-the-art
technology. All components are subject to stringent quality and
environmental criteria during production. Our management systems
are certied to ISO 9001.
■
These operating instructions contain important information on
handling the instrument. Working safely requires that all safety
instructions and work instructions are observed.
■
Observe the relevant local accident prevention regulations and
general safety regulations for the instrument's range of use.
■
The operating instructions are part of the product and must be kept
in the immediate vicinity of the instrument and readily accessible to
skilled personnel at any time. Pass the operating instructions onto the
next operator or owner of the instrument.
■
Skilled personnel must have carefully read and understood the
operating instructions prior to beginning any work.
■
The general terms and conditions contained in the sales
documentation shall apply.
■
Subject to technical modications.
■
Further information:
- Internet address: www.wika.de / www.wika.com
- Relevant data sheet: LM 10.01
1. General information
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2. Design and function
2.1 Description
The bypass level indicators work according to the principle of
communicating vessels. The bypass vessel contains a oat with a built-in
permanent magnet. This changes its position depending on the level
of the medium. Magnetic indicators, switches and level sensors are
mounted to the outside of the bypass tube and actuated by the magnetic
eld. Measurement of the level by guided wave radar is also possible.
The tting of these options is carried out according to customer
speciactions in the factory. The principle structure is described in chapter
5.3 “Commissioning”. Customer-specic versions are manufactured to order.
2.2 Scope of delivery
Cross-check scope of delivery with delivery note.
3. Safety
3.1 Explanation of symbols
DANGER!
... indicates a directly dangerous situation resulting in serious
injury or death, if not avoided.
WARNING!
... indicates a potentially dangerous situation that can result in
serious injury or death, if not avoided.
CAUTION!
... indicates a potentially dangerous situation that can result in
light injuries or damage to property or the environment, if not
avoided.
2. Design and function / 3. Safety
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Operating instructions bypass level indicator, model BNA
Information
... points out useful tips, recommendations and information for
ecient and trouble-free operation.
3.2 Intended use
The bypass level indicator serves for continuously measuring the level of
liquids in vessels.
The scope of application is dened by the technical performance limits
and materials.
■
The liquids must not have any large contamination or coarse
particulates and must not have a tendency to crystallise. Ensure
that the wetted materials of the bypass level indicator are suciently
resistant to the medium being monitored. Not suitable for dispersions,
abrasive liquids, highly viscous media and colours.
■
This instrument is not permitted to be used in hazardous areas! For
these areas, bypass level indicators with approval (e.g. in accordance
with ATEX) are required.
■
The operating conditions specied in the operating instructions must
be observed.
■
Do not operate the instrument in the direct vicinity of ferromagnetic
environments (min. distance 50 mm).
■
Do not operate the instrument in the immediate vicinity of strong
electromagnetic elds or in the immediate vicinity of equipment that
can be aected by magnetic elds (min. clearance 1 m).
■
The bypass level indicators must not be exposed to heavy
mechanical strain (impact, bending, vibration).
The instrument has been designed and built solely for the intended use
described here, and may only be used accordingly.
The manufacturer shall not be liable for claims of any type based on
operation contrary to the intended use.
3. Safety
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DANGER!
Work on containers involves the danger of intoxication and
suocation. No work is allowed to be carried out unless by
taking suitable personal protective measures (e.g. respiratory
protection apparatus, protective outt etc.).
3.3 Improper use
Improper use is dened as any application that exceeds the technical
performance limits or is not compatible with the materials.
WARNING!
Injuries through improper use
Improper use of the instrument can lead to hazardous
situations and injuries.
▶
Refrain from unauthorised modifications to the instrument.
▶
Do not use the instrument within hazardous areas.
Any use beyond or dierent to the intended use is considered as
improper use.
Do not use this instrument in safety or emergency stop devices.
3.4 Responsibility of the operator
The instrument is used in the industrial sector. The operator is therefore
responsible for legal obligations regarding safety at work.
The safety instructions within these operating instructions, as well as the
safety, accident prevention and environmental protection regulations for
the application area must be maintained.
To ensure safe working on the instrument, the operating company must
ensure the following:
■
The operating personnel are regularly instructed in all topics
regarding work safety, rst aid and environmental protection
and know the operating instructions and in particular, the safety
instructions contained therein.
■
The operating personnel have read the operating instructions and
taken note of the safety instructions contained therein.
■
The intended use for the application is complied with.
■
Following testing, improper use of the instrument is excluded.
3. Safety
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Operating instructions bypass level indicator, model BNA
3.5 Personnelqualication
WARNING!
Riskofinjuryshouldqualicationbeinsucient
Improper handling can result in considerable injury and
damage to equipment.
▶
The activities described in these operating instructions
may only be carried out by skilled personnel who have the
qualifications described below.
Skilled personnel
Skilled personnel, authorised by the operator, are understood to
be personnel who, based on their technical training, knowledge
of measurement and control technology and on their experience
and knowledge of country-specic regulations, current standards
and directives, are capable of carrying out the work described and
independently recognising potential hazards.
3.6 Personal protective equipment
The personal protective equipment is designed to protect the skilled
personnel from hazards that could impair their safety or health during
work. When carrying out the various tasks on and with the instrument,
the skilled personnel must wear personal protective equipment.
Follow the instructions displayed in the work area regarding
personal protective equipment!
The requisite personal protective equipment must be provided by the
operating company.
3. Safety
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3.7 Labelling, safety marks
Product label (examples)
Model specication
Material of bypass chamber
PS: Design pressure
PT: Test pressure
Permissible medium temperature range
Density of the medium
Float specication
Measuring point number
Serial number
Before mounting and commissioning the instrument, ensure
you read the operating instructions!
3. Safety
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Operating instructions bypass level indicator, model BNA
4. Transport, packaging and storage
4.1 Transport
Check the bypass level indicator for any damage that may have been
caused by transport.
Obvious damage must be reported immediately.
4.2 Packaging and storage
Do not remove packaging until just before commissioning.
5. Commissioning, operation
■
Observe all instructions given on the shipment packaging for
removing the transportation safety devices.
■
Remove the bypass level indicator carefully from the packaging!
■
When unpacking, check all components for any external damage.
5.1 Mounting preparation
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Detach the oat attached to the bypass level indicator from the
bypass chamber and remove the transport sleeve.
■
Remove the protection caps of the process connections.
■
Ensure that the sealing faces of the vessel or bypass level indicator
are clean and do not show any mechanical damage.
■
Check the connection dimensions (centre-to-centre distance) and the
alignment of the process connections on the vessel.
4. Transport ... / 5. Commissioning, operation
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Initialisation of magnetic display and magnetic switch
Slowly move the enclosed oat from bottom to top on the magnetic
display and then back down again.
Align additionally mounted magnetic
switches on the basis of the same
principle. For bypass level indicators
with insulation and magnetic displays
with Plexiglass attachments, the oat
must be moved up and down inside
the tube.
For magnetic displays with purge
gas connections, these connections
must have an airtight seal. Please
refer in this case to the mounting and
operating instructions for magnetic
displays with purge gas connections
as well.
5.2 Mounting
■
Observe the torque values of
screws specied in pipetting work.
■
Install the bypass level indicator
without tension.
■
In the selection of the mounting
material (sealings, screws,
washers and nuts), take the
process conditions into account.
The suitability of the sealing must
be specied with regard to the
medium and its vapours.
T = upper projection
M = centre-to-centre distance
U = lower projection
5. Commissioning, operation
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