Burkert 8112 User Manual [en, de, fr]

Operating Instructions

Lock fitting ARV­LS8112.1

for LEVEL SWITCH 8112

- unpressurised operation

Contents

Contents

1 About this document

1.1 Function .............................

1.2 Target group ..........................

1.3 Symbolism used .......................

2 For your safety

2.1 Authorised personnel....................

2.2 Appropriate use........................

2.3 Warning about misuse ...................

3 Product description

3.1 Configuration..........................

3.2 Principle of operation....................

3.3 Storage and transport ...................

4 Mounting

4.1 Mounting sequence .....................

5 Maintenance and fault rectification

5.1 Maintenance ..........................

5.2 Instrument repair .......................

6 Dismounting

6.1 Dismounting steps ......................

6.2 Disposal .............................

3
3
3

4
4
4

5
5
5

6

7
7

8
8

7 Supplement

7.1 Technical data.........................

7.2 Dimensions...........................

2 Lock fitting ARV-LS8112.1 --unpressurised operation

10

9

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About this document

1 About this document

1.1 Function

This operating instructions manual has all the information you
need for quick setup and safe operation. Please read this
manual before you start setup.

1.2 Target group

This operating instructions manual is directed to trained,
qualified personnel. The contents of this manual should be
made available to these personnel and put into practice by
them.

1.3 Symbolism used

Information, tip, note

This symbol indicates helpful additional information.

Caution: If this warning is ignored, faults or
malfunctions can result.
Warning: If this warning is ignored, injury to persons and/or
serious damage to the instrument can result.
Danger: If this warning is ignored, serious injury to persons
and/or destruction of the instrument can result.

Ex applications

This symbol indicates special instructions for Ex applications.

l List

The dot set in front indicates a list with no implied sequence.

à Action

This arrow indicates a single action.

1 Sequence

Numbers set in front indicate successive steps in a procedure.

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For your safety

2 For your safety

2.1 Authorised personnel

All operations described in this operating instructions manual
must be carried out only by trained specialist personnel
authorised by the operator. For safety and warranty reasons,
any internal work on the instruments must be carried out only
by personnel authorised by the manufacturer.

2.2 Appropriate use

ARV-LS8112.1 is used for for infinite locking with tube
extension.

Detailed information on the application range of ARV­LS8112.1 is available in chapter "

2.3 Warning about misuse

Inappropriate or incorrect use of the instrument can give rise to
application-specific hazards, e.g. vessel overfill or damage to
system components through incorrect mounting or adjustment.

2.4 General safety instructions

ARV-LS8112.1 is a high-tech instrument requiring the strict
observance of standard regulations and guidelines. The user
must take note of the safety instructions in this operating
instructions manual, the country-specific installation standards
(e.g. the VDE regulations in Germany) as well as all prevailing
safety regulations and accident prevention rules.

Product description".

4 Lock fitting ARV-LS8112.1 --unpressurised operation

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3 Product description

3.1 Configuration

Product description

Scope of delivery

Area of application

Functional principle

The scope of delivery encompasses:

l Lock fitting ARV-LS8112.1 for LEVEL SWITCH 8112

vibrating level switch

l Documentation

- this operating instructions manual

3.2 Principle of operation

The lock fitting ARV-LS8112.1 is a threaded fitting and can be
used together with a level sensor in tube version (LEVEL
SWITCH 8112). Depending on the version, the tube extension
of the sensor must have a diameter of 21.3 mm (0.84 in):

ARV-LS8112.1 cannot be used in coated tube extensions.

The wetted parts of ARV-LS8112.1 are made of steel (316L).

The ARV-LS8112.1 must only be used in unpressurized

vessels.

With the lock fittings, sensors with tube extension can be fixed
infinitely.

The terminal screws protect the tube against sliding through.

The following versions are available:

l ø 21.3 mm - G1 A or 1 NPT (SW 41)
l ø 21.3 mm - G1½ A or 1½ NPT (SW 60)

3.3 Storage and transport

Packaging

Storage and transport tem-

perature

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Your instrument was protected by packaging during transport.
Its capacity to handle normal loads during transport is assured
by a test according to DIN EN 24180.

The packaging of standard instruments consists of environ-

ment-friendly, recyclable cardboard. For special versions, PE
foam or PE foil is also used. Dispose of the packaging material
via specialised recycling companies.

l Storage and transport temperature see "Supplement -

Technical data - Ambient conditions"

l Relative humidity 20 … 85 %

Mounting

4 Mounting

4.1 Mounting sequence

The numbers in brackets refer to the figures on the following
pages.

1

2

Fig. 1: Lock fitting ARV-LS8112.1 - unpressurised
1 Lock fitting
2 Terminal screws (3 pcs.)

1 Screw the lock fitting (1) with a resistant seal ring into the

thread of your vessel and tighten the lock fitting (1) on the
hexagon

2 Clean the connection tube of the sensor and the lock fitting

carefully and remove grease, oil and dirt. Insert the sensor
into the lock fitting. Slide the tube into the requested
position and hold it

3 Make sure that the sensor is in the correct position (height).

The height adjustment of the sensor determines also the

switching point

4 Tighten the terminal screws (2) with a torque of 4 ±1 Nm

(3 ±0.7 lbf ft)

The terminal screws (2) press lightly into the tube and fix
the tube of the sensor in this position.

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Maintenance and fault rectification

5 Maintenance and fault rectification

5.1 Maintenance

When used as directed in normal operation, ARV-LS8112.1 is
completely maintenance free.

5.2 Instrument repair

If a repair is necessary, please proceed as follows:

You can download a return form from our homepage.

By doing this you help us carry out the repair quickly and

without having to call for needed information.

l Print and fill out one form per instrument
l Clean the instrument and pack it damage-proof
l Attach the filled in form and if necessary, a safety data

sheet to the instrument

l Send the instrument to the address of the agency serving

you, in Germany directly to the headquarters

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Lock fitting ARV-LS8112.1 --unpressurised operation 7

Dismounting

6 Dismounting

6.1 Dismounting steps

Note chapter "Mounting" and carry out the described steps in
reverse order.

If you proceed as follows, it is not necessary to readjust the
switching point and the lock fittings must not be dismounted
completely.

1 Switch off power supply of the sensor
2 Remove all connection cables
3 Loosen lock fitting with a screwdriver
4 Remove the sensor together with the lock fitting

6.2 Disposal

ARV-LS8112.1 consists of materials which can be recycled by
specialised recycling companies. Mark the instrument as
scrap and dispose it according to the national, legal
regulations.

Materials: see chapter "Technical data"

If you cannot dispose of the instrument properly, please

contact us about disposal methods or return.

8 Lock fitting ARV-LS8112.1 --unpressurised operation

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7 Supplement

7.1 Technical data

General data

Material 316L corresponds to 1.4404 or 1.4435
Process fitting

- G1 A or 1 NPT

- G1½ A or 1½ NPT

Tube diameter of the sensor ø 21.3 mm (0.84 in)
Materials

- Lock fitting 316L

- Process seal Klingersil C-4400

Terminal screws Pin with hexagon DIN 913 M5x8
Torque

- Terminal screws (M5) 4 ±1 Nm (3 ±0.7 lbf ft)

Process conditions

Operating pressure unpressurized
Product temperature -50 … +250 °C (-58 … +482 °F)

1)

Supplement

Approvals

The lock fittings have no own approvals

1)

not with thread NPT

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Supplement

7.2 Dimensions

Lock fitting ARV-LS8112.1 for LEVEL SWITCH 8112

ø 21,3mm

27

(

/32")

")

8

/

3

35mm (1

20mm

25

")

32

/
(

41mm

(1 39/64")

G1A/
1 NPT

60mm

(2 23/64")

G1½A/
1½ NPT

Fig. 2: Lock fitting ARV-LS8112.1 unpressurized for LEVEL SWITCH 8112

10 Lock fitting ARV-LS8112.1 --unpressurised operation

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Supplement

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