Burkert 558129 Manual de usuario

Operating Instructions

LEVEL SWITCH 8112

with transistor output

Contents

1About this document

1.1Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.2Target group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.3Symbolism used. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2For your safety

2.1Authorised personnel . . . . . . . . . . . . . . . . . . . . . . . . 5

2.2Appropriate use . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3Warning about misuse . . . . . . . . . . . . . . . . . . . . . . . 5

2.4General safety instructions . . . . . . . . . . . . . . . . . . . . 5

2.5Safety label on the instrument . . . . . . . . . . . . . . . . . . 6

2.6CE conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.7SIL conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.8Safety instructions for Ex areas . . . . . . . . . . . . . . . . . 6

3Product description

3.1Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2Principle of operation . . . . . . . . . . . . . . . . . . . . . . . . 8

3.3Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.4Storage and transport . . . . . . . . . . . . . . . . . . . . . . . . 9

4Mounting

4.1General instructions . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.2Instructions for installation . . . . . . . . . . . . . . . . . . . . . 13

5Connecting to power supply

5.1Preparing the connection . . . . . . . . . . . . . . . . . . . . . 17

5.2Connection procedure. . . . . . . . . . . . . . . . . . . . . . . . 17

5.3Wiring plan,single chamber housing . . . . . . . . . . . . . 18

6Set up

6.1General information . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.2Adjustment elements . . . . . . . . . . . . . . . . . . . . . . . . 20

6.3Function chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

7Maintenance and fault rectiﬁcation

7.1Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

7.2Remove interferences. . . . . . . . . . . . . . . . . . . . . . . . 23

7.3Exchange of the electronics . . . . . . . . . . . . . . . . . . . 24

8Dismounting

8.1Dismounting steps . . . . . . . . . . . . . . . . . . . . . . . . . . 25

8.2Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

9Supplement

9.1Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

9.2Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

2LEVEL SWITCH 8112 •with transistor output

Contents

32051-EN-120418

Supplementary documentation

Information:

Supplementary documents appropriate to the ordered version come

with the delivery.You can ﬁnd them listed in chapter "Product

description".

Instructions manuals for accessories and replacement parts

Tip:

To ensure reliable setup and operation of your LEVEL SWITCH 8112,

we oﬀer accessories and replacement parts.The corresponding

documentations are:

lOperating instructions manual "Oscillator LEVEL SWITCH 8111/

8112"

lOperating instructions manual "Lock ﬁtting for LEVEL SWITCH

8112"

Editing status:2012-04-12

LEVEL SWITCH 8112 •with transistor output 3

Contents

32051-EN-120418

1About this document

1.1Function

This operating instructions manual provides all the information you

need for mounting,connection and setup as well as important

instructions for maintenance and fault rectiﬁcation.Please read this

information before putting the instrument into operation and keep this

manual accessible in the immediate vicinity of the device.

1.2Target 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.

1.3Symbolism 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.

lList

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

àAction

This arrow indicates a single action.

1Sequence

Numbers set in front indicate successive steps in a procedure.

4LEVEL SWITCH 8112 •with transistor output

1About this document

32051-EN-120418

2For your safety

2.1Authorised personnel

All operations described in this operating instructions manual must be

carried out only by trained specialist personnel authorised by the plant

operator.

During work on and with the device the required personal protective

equipment must always be worn.

2.2Appropriate use

The LEVEL SWITCH 8112 is a sensor for level detection.

You can ﬁnd detailed information on the application range in chapter

"Product description".

Operational reliability is ensured only if the instrument is properly used

according to the speciﬁcations in the operating instructions manual as

well as possible supplementary instructions.

For safety and warranty reasons,any invasive work on the device

beyond that described in the operating instructions manual may be

carried out only by personnel authorised by the manufacturer.Arbitrary

conversions or modiﬁcations are explicitly forbidden.

2.3Warning 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.

2.4General safety instructions

This 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 as well as all prevailing safety

regulations and accident prevention rules.

The instrument must only be operated in a technically ﬂawless and

reliable condition.The operator is responsible for trouble-free

operation of the instrument.

During the entire duration of use,the user is obliged to determine the

compliance of the necessary occupational safety measures with the

current valid rules and regulations and also take note of new

regulations.

LEVEL SWITCH 8112 •with transistor output 5

2For your safety

32051-EN-120418

2.5Safety label on the instrument

The safety approval markings and safety tips on the device must be

observed.

2.6CE conformity

This device fulﬁlls the legal requirements of the applicable EC

guidelines.By attaching the CE mark,we provide conﬁrmation of

successful testing.

2.7SIL conformity

LEVEL SWITCH 8112 fulﬁlls the requirements to functional safety

according to IEC 61508 resp.IEC 61511.You ﬁnd further information

in the Safety Manual "LEVEL SWITCH".

2.8Safety instructions for Ex areas

Please note the Ex-speciﬁc safety information for installation and

operation in Ex areas.These safety instructions are part of the

operating instructions manual and come with the Ex-approved

instruments.

6LEVEL SWITCH 8112 •with transistor output

2For your safety

32051-EN-120418

3Product description

3.1Structure

The scope of delivery encompasses:

lLEVEL SWITCH 8112 point level switch

lDocumentation

-this operating instructions manual

-Safety Manual "Functional safety according to IEC 61508

resp.IEC 61511 (SIL)"

-Ex-speciﬁc"Safety instructions"(with Ex versions)

-if necessary,further certiﬁcates

The LEVEL SWITCH 8112 consists of the components:

lHousing cover

lHousing with electronics

lProcess ﬁtting with tuning fork

Fig.1:LEVEL SWITCH 8112 -with plastic housing

1Housing cover

2Housing with electronics

3Process ﬁtting

The type label contains the most important data for identiﬁcation and

use of the instrument:

lArticle number

lSerial number

lTechnical data

Scope of delivery

Constituent parts

Type label

LEVEL SWITCH 8112 •with transistor output 7

3Product description

32051-EN-120418

lArticle numbers,documentation

In addition to the type label outside on the instrument,you ﬁnd the

serial number also inside the instrument.

3.2Principle of operation

LEVEL SWITCH 8112 is a point level sensor with tuning fork for level

detection.

It is designed for industrial use in all areas of process technology and

can be used in liquids.

Typical applications are overﬁll and dry run protection.The small

tuning fork allows use in all kinds of tanks and vessels.Thanks to its

simple and rugged measuring system,LEVEL SWITCH 8112 is

virtually unaﬀected by the chemical and physical properties of the

liquid.

It functions even under diﬃcult conditions such as turbulence,air

bubbles,foam generation,buildup,strong external vibration or

changing products.

Fault monitoring

The electronics module of LEVEL SWITCH 8112 continuously

monitors via frequency evaluation the following criteria:

lStrong corrosion or damage on the tuning fork

lLoss of vibration

lLine break to the piezo drive

If a malfunction is detected or in case of power failure,the electronics

takes on a deﬁned switching condition,i.e.the output is open (safe

condition).

The tuning fork is piezoelectrically energised and vibrates at its

mechanical resonance frequency of approx.1200 Hz.The piezos are

ﬁxed mechanically and are hence not subject to temperature shock

limitations.The frequency changes when the tuning fork is covered by

the medium.This change is detected by the integrated electronics

module and converted into a switching command.

LEVEL SWITCH 8112 is a compact instrument,i.e.it can be operated

without external evaluation system.The integrated electronics

evaluates the level signal and outputs a switching signal.With this

switching signal,a connected device can be operated directly (e.g.a

warning system,a pump etc.).

The data for power supply are speciﬁed in chapter "Technical data".

Application area

Functional principle

Voltage supply

8LEVEL SWITCH 8112 •with transistor output

3Product description

32051-EN-120418

3.3Operation

The switching condition of LEVEL SWITCH 8112 can be checked

when the housing is closed (signal lamp). With the basic setting,

products with a density >0.7g/cm³(0.025 lbs/in³)can be detected.

The instrument can be adapted if products with lower density should

be measured.

On the electronics module you will ﬁnd the following indicating and

adjustment elements:

lSignal lamp for indication of the switching condition (green/red)

lDIL switch for sensitivity adjustment

lMode adjustment for selection of the switching condition (A/B)

3.4Storage and transport

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 environment-

friendly,recyclable cardboard.The sensor is also equipped with a

protective cap of ABS.For special versions,PE foam or PE foil is also

used.Dispose of the packaging material via specialised recycling

companies.

Transport must be carried out under consideration of the notes on the

transport packaging.Nonobservance of these instructions can cause

damage to the device.

The delivery must be checked for completeness and possible transit

damage immediately at receipt.Ascertained transit damage or

concealed defects must be appropriately dealt with.

Up to the time of installation,the packages must be left closed and

stored according to the orientation and storage markings on the

outside.

Unless otherwise indicated,the packages must be stored only under

the following conditions:

lNot in the open

lDry and dust free

lNot exposed to corrosive media

lProtected against solar radiation

lAvoiding mechanical shock and vibration

lStorage and transport temperature see chapter "Supplement -

Technical data -Ambient conditions"

lRelative humidity 20 …85 %

Packaging

Transport

Transport inspection

Storage

Storage and transport

temperature

LEVEL SWITCH 8112 •with transistor output 9

3Product description

32051-EN-120418

4Mounting

4.1General instructions

Make sure that all parts of the instrument exposed to the process,in

particular the sensor element,process seal and process ﬁtting,are

suitable for the existing process conditions.These include above all

the process pressure,process temperature as well as the chemical

properties of the medium.

You can ﬁnd the speciﬁcations in chapter "Technical data"and on the

type label.

In general,LEVEL SWITCH 8112 can be installed in any position.The

instrument only has to be mounted in such a way that the tuning fork is

at the height of the desired switching point.

The tuning fork has lateral markings (notches)that indicate the

switching point with vertical mounting.The switching point refers to

water with the basic setting of the sensitivity switch ≥0.7g/cm³

(0.025 lbs/in³). When mounting LEVEL SWITCH 8112,make sure that

this marking is at the height of the requested switching point.Keep in

mind that the switching point of the instrument is shifted if the medium

has a density other than water -water 1g/cm³(0.036 lbs/in³). For

products <0.7g/cm³(0.025 lbs/in³)and >0.5g/cm³(0.018 lbs/in³)the

density switch must be set to ≥0.5g/cm³.

Suitability for the proc-

ess conditions

Switching point

10 LEVEL SWITCH 8112 •with transistor output

4Mounting

32051-EN-120418

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