Betriebsanleitung DKG-1 Modul ATEX 2015 02 23, 1, en US BA DKG-1... · 1 Overview 1.1 Short...

DKG-1 Module ATEXFlow Monitor

Operating instructions

Flow monitor for usein explosion-hazard zones

Series DKG-1Type DKG-1/1 thru DKG-1/90

Read the instructions prior to performing any task!

DKG-1 Module ATEX, 1, en_US

© Meister Strömungstechnik GmbH 2013

Meister Strömungstechnik GmbH

Im Gewerbegebiet 2

63831 Wiesen

Germany

Telephone: +49 6096 9720 - 0

Fax: +49 6096 9720 - 30

email: [email protected]

Internet: www.meister-flow.com

These instructions were compiled by:

Meister Strömungstechnik GmbH

Subject to change without notice

20.02.2015DKG-1 Module ATEX Flow Monitor2

These instructions facilitate the safeand efficient handling of a flow monitor(referred to as "device" in the fol-lowing). The instructions are an inte-gral part of the device and must bekept within easy reach for the per-sonnel in the immediate vicinity of thedevice at all times. Personnel mustcarefully read and understand theseinstructions before commencing allwork. The basic requirement for safework is adherence to all safety andhandling instructions stipulated inthese instructions. The local accident-prevention regulations and generalsafety standards and regulations forthe field of application of the devicealso apply. Illustrations in theseinstructions are provided to aid generalunderstanding and might deviate fromthe actual model. No claims can bederived from any such differences.

Limitations of liability

All details and instructions in thismanual have been compiled underconsideration of the valid standardsand regulations, the current state-of-technology and our many years ofknowledge and experience. The manu-facturer does not accept any liabilityarising from:

n non-observance of any details inthese instructions

n improper use of the device, or usethat is not in accordance withthese instructions

n use of non-trained personnel

n unauthorized retrofitting or tech-nical changes that have not beenauthorized by the manufacturer

n use of non-approved spare parts

The duties and obligations agreedupon in the delivery contract apply infull, as well as the general terms andconditions, the terms of delivery by themanufacturer and the valid legal regu-lations applicable at the conclusion ofthe contract.

Copyright

These operating instructions are pro-tected by copyright.

Except for internal purposes, transferof these instructions to third-parties,copying them in any way– even in part – as well as dissemina-tion and/or communication of their con-tent is forbidden without prior writtenauthorization from Meister Strömung-stechnik ("manufacturer"). Violationsare subject to claims for indemnifica-tion. The manufacturer reserves theright to assert additional claims.

Copyright is the property of the manu-facturer.

© Meister Strömungstechnik GmbH

Im Gewerbegebiet 2

63831 Wiesen

Germany

Supplemental instructions

20.02.2015 DKG-1 Module ATEX Flow Monitor 3

Table of contents1 Overview...................................................................................................... 6

1.1 Short description.................................................................................. 61.2 Warranty and guarantee provisions..................................................... 61.3 Customer service................................................................................. 6

2 Safety........................................................................................................... 72.1 Explanation of symbols........................................................................ 72.2 Correct use in explosion-hazard zones................................................ 82.3 Special precautions for use in explosion-hazard zones..................... 102.3.1 Precautions for use in explosion-hazard zones.............................. 112.4 Personnel requirements..................................................................... 122.5 Personal safety equipment................................................................. 132.6 Protective systems............................................................................. 13

3 Areas of employment............................................................................... 143.1 Mechanical component (flow meter without limiting contacts and

electrical accessories)........................................................................ 143.1.1 Exterior of the device...................................................................... 143.1.2 Interior of the device........................................................................ 143.1.3 General safety information for the machanical component of the

device.............................................................................................. 153.1.4 Categorization of the mechanical component of the flow monitor... 163.1.5 List of media.................................................................................... 193.1.6 Applicable documents..................................................................... 213.2 Electrical component of the device (limiting contacts)....................... 243.2.1 Categorization of the electrical component of the flow monitor

(limit switch contacts)...................................................................... 243.2.2 Applicable documents..................................................................... 24

4 Operating data.......................................................................................... 364.1 Operating data for the mechanical component of the device............. 364.2 Switch unit operating data.................................................................. 36

5 Transport, packaging and storage.......................................................... 38

Table of contents


6 Installation and initial startup.................................................................. 396.1 Safety................................................................................................. 396.2 Tools.................................................................................................. 396.3 Protection of the sight glass............................................................... 396.4 Electrical connection.......................................................................... 396.5 Grounding the device......................................................................... 396.6 Contact protection measures............................................................. 39

7 Operation................................................................................................... 41

8 Troubleshooting....................................................................................... 42

9 Maintenance.............................................................................................. 439.1 Return Materials................................................................................. 439.1.1 Return Materials Authorization........................................................ 43

10 Disassembly and disposal....................................................................... 44

11 Technical data........................................................................................... 4511.1 Dimension sheet.............................................................................. 4511.2 General specifications...................................................................... 4611.3 Replacement parts........................................................................... 49

12 Appendix................................................................................................... 51

13 Index.......................................................................................................... 52

Table of contents


1 Overview1.1 Short description

Fig. 1: Flow monitor DKG-1

01 Sight glass with measuring scale02 Explosion-proof limit contact

housing with cast on power cable

The flow monitor DKG-1 monitors thecontinuous flow of liquids. It isdesigned for installation into pipe sys-tems.

A float inside the device is moved bythe medium flowing through it. The cur-rent rate of flow can be read off on themeasuring scale on the sight glass.The top edge of the float is the read offpoint.

Electrical monitoring is accomplishedby explosion-proof limit contacts. Theelectrical connection is accomplishedthrough a cast on power cable.

1.2 Warranty and guar-antee provisions

Warranty and guarantee provisions arecontained in the general terms andconditions of the manufacturer.

1.3 Customer serviceFor technical information, please con-tact our customer service department(for contact details, see Page 2).

Furthermore, our staff is always inter-ested in receiving new information andexperiences gained from application ofthe device, which might be useful inimproving our products.

OverviewCustomer service


2 SafetyThis Chapter provides an overview ofimportant safety aspects required foroptimum protection of personnel aswell as for safe installation and safeoperation of the device.

Non-observance of the handling andsafety instructions listed in this manualmay result in hazardous/dangerous sit-uations and in damage to property.

2.1 Explanation of sym-bols

Safety instructions

Safety instructions in this manual aremarked by symbols. The safety instruc-tions are preceded by signal words thatindicate the level of danger/hazard.

To prevent accidents or injuries to per-sons as well as damage to property,always observe the safety instructionsand proceed carefully.

DANGER!

This combination of symbol andsignal word indicates an imme-diate, dangerous situation thatresults in death or serious injury ifit is not avoided.

WARNING!

This combination of symbol andsignal word indicates a possiblydangerous situation that mightresult in death or serious injuries ifit is not avoided.

SafetyExplanation of symbols


CAUTION!

This combination of symbol andsignal word indicates a possiblydangerous situation that mightresult in minor or slight injuries if itis not avoided.

NOTICE!

This combination of symbol andsignal word indicates a possiblydangerous situation that mightresult in damage to property and tothe environment if it is not avoided.

Tips and recommendations

This symbol emphasizes usefultips and recommendations as wellas information for efficient andfailure-free operation.

Signs used in these instructions

The following symbols and highlightingare used in these instructions to iden-tify handling instructions, the descrip-tion of results, lists/enumerations, ref-erences and other elements:

Designates step-by-step han-dling instructions.

ð Designates a state or anautomatic sequence as aresult of a specific operatingstep.

n Designates randomly ordered enu-merations and list entries

Ä “Signs used in these instructions” on page 8, designates references tochapters in these instructions.

2.2 Correct use inexplosion-hazardzones

The device is designed and con-structed exclusively for the correct usein accordance with these instructions.

The flow monitor serves exclusively tomonitor the continuous flow of liquids.

The areas of application are specifiedin Chapter 3 of these instructions.

The admissible operating conditionsare specified in Chapter 4 of theseinstructions.

SafetyCorrect use in explosion-hazard zones


Correct use of the device includes theobservance of all specifications inthese Operating Instructions, as wellas those for "DKG-1 BASICS".

Any additional or different application,above and beyond the correct use inaccordance with these instructions, isdeemed as incorrect use.

WARNING!

Danger due to incorrect use!– Use the flow monitor only

within the stipulated perform-ance limits

– Do not subject the flow mon-itor to severe temperature fluc-tuations

– Do not use the flow monitorwith quick-acting valves

– Do not use the flow monitorwith solenoid valves

– Do not subject the flow mon-itor to vibrations

– Do not subject the flow mon-itor to pressure surges

– Do not use the flow monitorwith media containing solids orabrasives

– Only use the flow monitor withmedia previously approved bythe manufacturer

– Do not use the flow monitor asthe sole monitoring device toprevent dangerous conditions

– Do not install the flow monitoras a load bearing part within apipeline system

– The flow monitor with sightglass must be installed in sucha way as to prelude damageto the sight glass by outsideforce. If necessary, install anappropriate impact protectiondevice

– The flow monitor may beinstalled in explosion-hazardzones only if:

SafetyCorrect use in explosion-hazard zones


– the label on the flow mon-itor,

– the label on the switchunit installed on the flowmonitor,

– and the information con-tained in the accompa-nying documentation(Operating Instructions"DKG-1 Module BASICS"and "DKG-1 ModuleATEX"), authorize suchinstallation and operation

– Planning and design of equip-ment, protective systems andcomponents is the responsi-bility of the facility operator

– The facility operator must con-sider the possible effects incase of an explosion

– The facility operator is respon-sible for the substitution, or thereduction of the quantity ofsubstances, which may causean explosive atmosphere.

All claims for damages due to incorrectuse are excluded.

Incorrect use of the flow monitor mayresult in dangerous situations.

2.3 Special precautionsfor use in explosion-hazard zones

The following section lists residualrisks that might arise from the device.

To reduce health risks and preventdangerous situations, observe allsafety instructions listed here, all safetyinstructions listed in other chapters ofthese Operating Instructions, as wellas all safety instructions listed in theOperating Instructions for "DKG-1Module BASICS".

These Operationg Instructionscannot cover all conceivable dan-gers because many dangers arise,not from the device itself, but fromthe respective media flowingthough it. Always observe theappropriate safety data sheetswhen using hazardous media!

SafetySpecial precautions for use in explosion-hazard zones


2.3.1 Precautions for usein explosion-hazardzones

DANGER!

Danger to life from explosions– Potentially explosive dust-air

mixtures and hybrid mixturesare not permitted inside theflow meter/flow monitor andmust be excluded by the oper-ator!

– Dust accumulations are notpermitted inside the flowmeter/flow monitor or on theoutside surface and must beexcluded by the operator!When cleaning, do not use drycloths!

– To avoid electrostatic chargescapable of resulting in dan-gerous situations, the fol-lowing requirements must bemet:– All conductive parts,

capable of electrostaticcharging, must be con-nected and grounded.

– Dangerous electrostaticcharging of non-conduc-tive parts and materials,including solids, fluids anddust, must be avoided.

– Ignitable discharges mustbe excluded.

– Chemical reactions, pyrolysisor biological processes insidethe flow meter/flow monitorare not permitted and must beexcluded by the operator.

– Intrusion of foreign materialswhich can generate sparks, isnot permitted and must beexcluded by the operator.

– Friction, which may causelocal heat build-up andsparking, is not permitted andmust be excluded by the oper-ator!

– Impact processes, involvingmaterials such as rust or lightalloys (e.g. aluminum or mag-nesium) are not permitted andmust be excluded by the oper-ator.

– High voltage and currents thatmay cause sparking are notpermitted and must beexcluded by the operator.

– Electromagnetic waves in afrequency range between 104

to 3×1012 Hz, as may be foundin the vicinity of radio broad-casting stations or high-fre-quency generators, are notpermitted and must beexcluded by the operator.

SafetySpecial precautions for use in explosion-hazard zones > Precautions for use in explosion-hazard zones


– Electromagnetic waves in afrequency range between3×1011 to 3×1015 Hz, whichcan occur as radiation fromprotective systems or compo-nents (e.g. lamps, arc lamps,lasers), are not permitted andmust be excluded by the oper-ator.

– Devices which can focus radi-ation, and which can providean ignition source for particlesand surfaces, are not per-mitted and must be excludedby the operator.

– Ionizing radiation, whichexceeds the minimum ignitiontemperature of the sur-rounding combustible atmos-phere, is not permitted andmust be excluded by the oper-ator.

– Ultrasonic sources, which canignite the sonicated material,are not permitted and must beexcluded by the operator.

– Adiabatic compression andshock waves are not permittedand must be excluded by theoperator.

– Exothermic reactions,including auto-ignition of dust,is not permitted and must beexcluded by the operator.

2.4 Personnel require-ments

WARNING!

Risk of injury due to insuffi-ciently trained and qualified per-sonnel!If unqualified personnel work onthe device or are located within itshazard zone, dangers arise whichmay result in serious injuries andconsiderable damage to property.

– All work must be performed byqualified personnel only.

– Keep unqualified personnelaway from hazard zones.

The personnel requirements, as formu-lated in the Operating Instructions for"DKG-1 Modul BASICS" Chapter 2.4,are valid.For employment within explo-sion-hazard zones, only trained andqualified personnel may be used.Responsibility for the choice of per-sonnel and their qualifications restswith the facility operator. The require-ments for standards DIN EN 60079-14and DIN EN 60079-17 must be takeninto consideration.

Refer also to the Operating Instructions"DKG-1 Modul BASICS", Chapter 2.9"Responsibility of the owner"

The term "Authorized Personnel" isrestricted to those persons who can beexpected to carry out their work reli-ably. Persons whose ability to respondis influenced , e.g. by drugs, alcohol ormedication, are not authorized.

SafetyPersonnel requirements


Observe the age and occupational reg-ulations at the site when choosing per-sonnel.

2.5 Personal safetyequipment

Personal safety equipment is used toprotect personnel from hazards/dan-gers that might impair their safety orhealth during work.

When performing the various tasks at,and with the device, personnel mustwear personal safety equipment. Spe-cial reference to this equipment ismade in the Operating Instructions for"DKG-1 Module BASICS". The facilityoperator must ensure that the protec-tive clothing used in explosion-hazardzones is suitable and approved.

2.6 Protective systemsThe design of the protective systemand its intergration are described in theOperating Instructions "DKG-1 ModuleBASICS". The operator must ensurethat all provisions, which apply to oper-ation in an explosion-hazard zone, aremet.

SafetyProtective systems


3 Areas of employment3.1 Mechanical compo-

nent (flow meterwithout limiting con-tacts and electricalaccessories)

3.1.1 Exterior of thedevice

n Device type DGK-1 may beemployed in areas in which anexplosive atmosphere, composedof a gas/air- or dust/air-mixturemay occasionally occur. The exte-rior of the device may therefore besuitably located in explosionhazard zone 1, zone 2, zone21 orzone 22

n Dust accumulations are not per-mitted, neither internally, nor onthe outside surface of the flowmeter/flow monitor and must beexcluded by the operator

3.1.2 Interior of the devicen Internal to the device, only those

flow media may be used, to whichthe following applies:

n the medium is listed on the medialist (Chapter 3.1.5) and

n the medium is not aggressive tothe wetted parts of the device, and

n the device is approved by themanufacturer for use with themedium.

n It is permissible to occasionallyhave an explosive gas/air mixtureinside the device (explosionhazard zone 1). At no time maygasses of explosion hazard groupIIC (e.g. hydrogen or acetylene) bepresent in the interior of thedevice.

n Explosive dust-air mixtures andhybrid mixtures are not permittedinside the flow meter/flow monitorand must be excluded by the oper-ator.

n Chemical reactions, pyrolysis orbiological processes inside theflow meter/flow monitor are notpermitted and must be excludedby the operator.

n The entry of foreign materials thatmay produce sparks is not per-mitted and must be excluded bythe operator.

Areas of employmentMechanical component (flow meter without limiting contacts and electrical accessories) > Interior of the device


3.1.3 General safety infor-mation for themachanical compo-nent of the device

n Dust accumulations are not per-mitted; neither internally, nor onthe outside surface of the flowmeter/flow monitor and must beexcluded by the operator. Whencleaning, do not use dry cloths!

n In case of hazard through staticelectricity, the following require-ments must be met:– All conductive parts capable of

charging themselves electro-statically must be connectedand grounded

– Dangerous electrostaticcharging of non-conductiveparts and materials, includingsolids, fluids and dust, mustbe avoided

– Ignitable discharges must beexcluded

n Friction, which may cause localheat build-up and sparking, is notpermitted and must be excludedby the opertor

n Impact processes involving mate-rials such as rust or light alloys(e.g. aluminum or magnesium) arenot permitted and must beexcluded by the operator

n High voltage and currents that maycause sparking are not permittedand must be excluded by the oper-ator

n Electromagnetic waves in a fre-quency range between 104 to3×1012 Hz, as may be found in thevicinity of radio broadcasting sta-tions or high-frequency generators,are not permitted and must beexcluded by the operator

n Electromagnetic waves in a fre-quency range between 3×1011 to3×1015 Hz, which can occur asradiation from protective systemsor components (e.g. lamps, arclamps, lasers), are not permittedand must be excluded by the oper-ator

n Devices which can focus radiation,and which can provide an ignitionsource for particles and surfaces,are not permitted and must beexcluded by the operator

n Ionizing radiation, which exceedsthe minimum ignition temperatureof the surrounding combustibleatmosphere, is not permitted andmust be excluded by the operator

n Ultrasonic sources, which canignite the sonicated material, arenot permitted and must beexcluded by the opertor

n Adiabatic compression and shockwaves are not permitted and mustbe excluded by the operator

Areas of employmentMechanical component (flow meter without limiting contacts and electrical accessories) > General safety information for the machanical component

of the device


n Exothermic reactions, includingauto-ignition of dust, are not per-mitted and must be excluded bythe operator

n The device must be installed insuch a way as to preclude damageby outside force. This is especiallyso for devices with sight glass. Itmust be ensured that the sightglass cannot be damaged. If nec-essary, install appropriate impactprotection shielding

3.1.4 Categorization of themechanical compo-nent of the flowmonitor

n Equipment groupinternal: IIexternal: II

n Equipment categoryinternal: 2external: 2

n Atmosphereinternal: Gas (G)external: Gas (G),Dust (D)

n Explosion hazard groupinternal: IIBexternal: IIC

n Temperature classificationinternal: TXexternal: TX

n Operating temperatures for devicewithout limiting contactsThe maximum media tempera-ture for a device without limitingcontacts must be less than:– the ignition temperature of the

medium and– the ignition temperature of the

atmosphere surrounding thedevice and

– less than or equal to 120 °C

It is the responsibility of the oper-ator to ensure that these require-ments are met concurrentlyThe minimum media tempera-ture for a device without limitingcontacts must be higher than orequal to - 20 °C

Areas of employmentMechanical component (flow meter without limiting contacts and electrical accessories) > Categorization of the mechanical component of the flow

monitor


whereby it must be ensured thatthe medium does not freezeThe maximum ambient tempera-ture for a device without limitingcontacts must be less than:– the ignition temperature of the




It is the responsibility of the operator toensure that these requirements aremet concurrently.

n The minimum ambient tempera-ture for a device without limitingcontacts must be higher than orequal to - 20 °C

n Operating temperatures for adevice with the following limitingcontacts:Explosion proof switch contactswith design examination:PTB 03 ATEX 2154 X

II 2 G Ex mb II T6II 2 D Ex tD A21 IP67 T80 °C

The maximum media tempera-ture for a device with theses lim-iting contacts must be less than:– the ignition temperature of the




It is the responsibility of the oper-ator to ensure that these require-ments are met concurrently.

The minimum media tempera-ture foe a device with these lim-iting contacts must be higherthan or equal to- 20 °C.It must be ensured that themedium does not freezeThe maximum ambient tempera-ture for a device with these lim-iting contacts must be less than:– the ignition temperature of the




It is the responsibility of the oper-ator to ensure that these require-ments are met concurrently.The minimum ambient tempera-ture for a device with these lim-iting contacts must be higherthan or equal to - 20 °C

n Operating temperatures for adevice with the following limitingcontactsExplosion proof switch contactswith design examination:PTB 03 ATEX 2154 X

II 2 G Ex mb II T5II 2 D Ex tD A21 IP67 T100 °C

The maximum media tempera-ture for a device with these lim-iting contactsmust be less than:– the ignition temperature of the





monitor


It is the responsibility of the oper-ator to ensure that these require-ments are met concurrentlyThe minimum media tempera-ture for a device with these lim-iting contacts must be higherthan or equal to - 20 °C.It must be ensured that themedium does not freeze.The maximum ambient tempera-ture for a device with these lim-iting contacts must be less than:– the ignition temperature of the



– less than or equal to90 °C

It is the responsibility of the oper-ator to ensure that these require-ments are met concurrently.The minimum ambient tempera-ture for a device with these lim-iting contacts must be higherthan or equal to- 20 °C

n Labeling of the mechanical compo-nent of the flow meter/monitor:Internal: II 2 G IIB TX XExternal: II 2 GD IIC TX X


monitor


3.1.5 List of mediamedia used ignition temp. explosion limit

[%]

lower upper

Argon Inert gas

Cargon gaseous mixtureArgon+CO2

CO2 Inert gas

CO2liquid

Diesel 255 (ASTME659-78) 0,6 6,5

Biodiesel SME Soya seed oilmethyl ester

285 (ASTME659-78)

Biodiesel RME Rape seed oilmethyl ester

283 (ASTME659-78)

EDC (1,2-Dichlorethane) 440 6,2 16

Natural gas 575 - 640 4 17

Ethanol 400 3,1

City gas 560

Gaseous mix-ture 90 %Argon + 10 %CO2

Gaseous mix-ture 96 %Argon + 4 % O2

Helium none none none

air

Methane 595 4,4 16,5

Areas of employmentMechanical component (flow meter without limiting contacts and electrical accessories) > List of media


Methanol 455 6,1 44

N2 none none none

N2O none none none

NaOH Natrium-hydroxide-NaOH ("causticsoda")

none none none

NaOH 50% none none none

Caustic sodaNaOH 25%

none none none

NH3 anhydrousammonia

630 15 28

n-Heptan(highly purified)

215 1 6,7

O2 none none none

Oil

organic Saltsolution density1,35 kg/l 20 °C

Peroxide none none none

RAF2 raffinate 2 385 1,6 10

Spirits ofAmmonia(25%)

630 15 28

SO2 Sulphur dioxide none none none

Solvana 2000(Universalcleaning agent)

236 0,4 7

Petroleum ether >200 0,6 7

Water none none none

Areas of employmentMechanical component (flow meter without limiting contacts and electrical accessories) > List of media


Water / Nitrite-solution

Hydrogenper-oxyde 50%(ultra pure)

none none none

Hydrogenper-oxyde 50weight.-%, dis-solved in Water

none none none

Propane 470 2,2 9,5

n-Butane 365 1,4 8,5

3.1.6 Applicable docu-ments

Areas of employmentMechanical component (flow meter without limiting contacts and electrical accessories) > Applicable documents


3.2 Electrical compo-nent of the device(limiting contacts)

The electrical limiting contacts weresubjected to design examination PTB03 ATEX 2154 X

The electrical limiting contacts, in com-bination with DKG-1 type devices, mayonly be employed in areas in which anexplosive atmosphere, composed of agas/air - or dust/air-mixture, may occa-sionally occur. The limiting contacts ofthe device may therefore be suitablylocated in explosion hazard zone 1,zone 2, zone 21, or zone 22. Dustaccumulations are not permitted on thelimiting contacts and must be excludedby the operator.

3.2.1 Categorization of theelectrical compo-nent of the flowmonitor (limit switchcontacts)

n Device group: IIn Device category: 2n Atmosphere: Gas (G), Dust (D)n Gas group: IICn Ignition protection category (Gas):

mb (Encapsulation, application inZone 1 and 2)

n Ignition protection category (Dust):td A21 (in accordance withprocess A for Zone 21), IP67

n Temperature class (Gas): T5, T6n Maximum permissible surface tem-

perature (Dust): T 80 °C, T 100 °C

3.2.2 Applicable docu-ments

The electrical limiting contacts weresubjected to a design examination

PTB 03 ATEX 2154 X

The following documents must beobserved:

Manufacturer's declaration for theemployment of explosion-proof switchunits within a safety concept

n Design examination certificate withattachments

n First Amendment to the designexamination certificate

n Third Amendments to the designexamination certificate

n Fourth Amendment to the designexamination certificate

n Conformity declaration (MeisterStrömungstechnik GmbH)

n Operating Instructions for theswitch units

Areas of employmentElectrical component of the device (limiting contacts) > Applicable documents


4 Operating dataOperating data for employment inexplosion-hazard zones.

4.1 Operating data forthe mechanicalcomponent of thedevice

The maximum operating pressure isspecified in Chapter 10.7 of the Oper-ating Instructions for "DKG-1 ModuleBASICS".

The maximum media and ambient tem-peratures for the mechanical compo-nent depend on various factors. It isthe responsibility of the operator tospecify the maximum temperatureswithin the framework set by the guide-lines in Chapter Ä Chapter 3.1.4 “Cat-egorization of the mechanical compo-nent of the flow monitor” on page 16and ensure operation within theseparameters.

4.2 Switch unit oper-ating data

Operating data for the explosion-proofswitch unit with design examinationcertificate(PTB 03 ATEX 2154 X.

The following limit values must not beexceeded, not even for brief periods:

Normally Open Contact (NOC), SEM-E (T6)

Max operatingvoltage

250 V

Max switch cur-rent

2 A

Max switchingcapacity

60 VA

Max ambienttemp for switchcontact

75 °C

Normally Open Contact (NOC), SEM-E (T5)


250 V

Max switch cur-rent

2 A


60 VA


90 °C

Operating dataSwitch unit operating data


Change-Over Contact, SEM-A (T6)


250 V

Max switch cur-rent

1 A


30 VA

Minimum load 3 VA


75 °C

Change-Over Contact, SEM-A (T5)


250 V

Max switchingcurrent

1 A

Max switchcapacity

30 VA

Minimum load 3 VA


90 °C

Operating dataSwitch unit operating data


5 Transport, packaging and storageTransport, packaging and storage innon-explosion-hazard zones aredescribed in Chapter 4, "DKG-1Module BASICS".

In explosion-hazard zones, in additionto the requirements described in theabove reference, all valid provisions forsafety, accident prevention and envi-ronmental protection must be compliedwith.

Packaging procedures (wrapping/unwrapping) may only be conductedoutside the explosion-hazard zone.

DANGER!

Danger to life if packaging pro-cedures are conducted in explo-sion-hazard zones.

n Packaging procedures may onlybe conducted outside the explo-sion-hazard zone.

Transport, packaging and storage


6 Installation and initial startupInstallation and initial startup in non-explosion-hazard zones are describedin Chapter 5, "DKG-1 ModuleBASICS". In addition, for installationand initial startup in explosion-hazardzones, the following sections must beobserved:

6.1 SafetyAll relevant safety-, accident preven-tion- and environmental protection reg-ulations must be followed for employ-ment in an explosion hazard zone.

6.2 ToolsTools, which may cause sparks, arenot to be employed. These tools mayonly be used when there is no poten-tially explosive atmosphere present.

The use of steel tools, of any kind, isprohibited in hazard zone 1, whenthere is risk of explosion due to sub-stances in explosion hazard group IIC(in accordance with IEC/TR360079-20), (for example, acetylene,hydrogen).

6.3 Protection of thesight glass

The flow monitor with sight glass mustbe installed in such a way as to pre-clude damage to the sight glass by out-side force.

The facility operator is responsible forthe installation of an appropriateimpact protection shield.

6.4 Electrical connec-tion

Electrical connection is accomplishedthrough the cast on power cableleading from the switch housing. Allsafety advisories contained in theOperating Instructions for "DKG-1Module BASICS", Chapter 5, must beobserved. Additionally, for operation inexplosion-hazard zones, all valid provi-sions for safety, accident preventionand environmental protection must becomplied with.

6.5 Grounding thedevice

When installing the device in a pipesystem, ensure that the device isgrounded to the pipe system to avoid adangerous electrical potential differ-ence.

6.6 Contact protectionmeasures

Recommendations for contact protec-tion measures, when the device isemployed in a non-explosion-hazardzone, are described in chapter 5.9"Contact protection measures" of theOperating Instructions for "DKG-1Module BASICS". When the device isemployed in an explosion-hazard zone,

Installation and initial startupContact protection measures


only those contact protection measuresmay be taken, which are consistentwith all valid safety and accident pre-vention measures for explosion-hazardzones and the specifications containedin these Operating Instructions.

Installation and initial startupContact protection measures


7 OperationOperation is described in Chapter 6,"DKG-1 Module BASICS". All safety-and hazard warnings contained inChapter 6, "DKG-1 Module BASICS",must be followed. For operation inexplosion-hazard zones, all valid provi-sions for safety, accident preventionand environmental protection must becomplied with.

Operation


8 TroubleshootingThe procedures in case of malfunctionare described in Chapter 7, "DKG-1Module BASICS". All safety- andhazard warnings, contained in Chapter7, "DKG-1 Module BASICS", must befollowed. Additionally, for operation inexplosion-hazard zones, all valid provi-sions for safety, accident preventionand environmental protection must becomplied with.

Troubleshooting


9 MaintenanceMaintenance procedures are describedin Chapter 8, "DKG-1 ModuleBASICS". All safety- and hazard warn-ings, contained in Chapter 8, "DKG-1Module BASICS", must be followed.For operation in explosion-hazardzones, all valid provisions for safety,accident prevention and environmentalprotection must be complied with.Maintenance procedures may only beperformed outside the explosion-hazard zone.

DANGER!

Danger to life if maintenanceprocedures are performed in theexplosion-hazard zone– Maintenance procedures may

only be performed outside theexplosion-hazard zone

9.1 Return Materials9.1.1 Return Materials

AuthorizationFor products being returned, regard-less of the reason, the currently validprovisions of the returns policy set byMEISTER will apply. Return shipmentswhich do not comply with the returnspolicy may be refused by MEISTER atthe expense of the consignor.

MaintenanceReturn Materials > Return Materials Authorization


10 Disassembly and disposalDisassembly and disposal proceduresare described in Chapter 9, "DKG-1Module BASICS". All safety- andhazard warnings, contained in Chapter9, "DKG-1 Module BASICS", must befollowed. For operation in explosion-hazard zones, all valid provisions forsafety, accident prevention and envi-ronmental protection must be compliedwith. Disassembly of the device mayonly be performed outside the explo-sion-hazard zone.

DANGER!

Danger to life if disassemblyprocedures are performed in theexplosion- hazard zone– Disassembly may only be per-

formed outside the explosionhazard zone

– Disassembly in an explosionhazard zone may only be per-formed if there is no risk froman explosive atmosphere

Disassembly and disposal


11 Technical data11.1 Dimension sheet

Technical dataDimension sheet


11.2 General specificationsType Overall dimensions (mm)

G * DN SW L1 L2 T

DKG-1/1 1/4 8 41 118,5 144,5 10

1/2 15 41 118,5 144,5 14

3/4 20 41 118,5 138,5 15

1 25 41 118,5 158,5 17

DKG-1/2 1/4 8 41 118,5 144,5 10

1/2 15 41 118,5 144,5 14

3/4 20 41 118,5 138,5 15

1 25 41 118,5 158,5 17

DKG-1/4 1/4 8 41 118,5 144,5 10

1/2 15 41 118,5 144,5 14

3/4 20 41 118,5 138,5 15

1 25 41 118,5 158,5 17

DKG-1/8 1/2 15 41 118,5 144,5 14

3/4 20 41 118,5 138,5 15

1 25 41 118,5 158,5 17

DKG-1/10 1/2 15 41 118,5 144,5 14

3/4 20 41 118,5 138,5 15

1 25 41 118,5 158,5 17

DKG-1/15 1/2 15 41 118,5 144,5 14

3/4 20 41 118,5 138,5 15

1 25 41 118,5 158,5 17

DKG-1/24 1/2 15 41 118,5 144,5 14

Technical dataGeneral specifications


Type Overall dimensions (mm)

G * DN SW L1 L2 T

3/4 20 41 118,5 138,5 15

1 25 41 118,5 158,5 17

DKG-1/30 3/4 20 41 118,5 138,5 15

1 25 41 118,5 158,5 17

DKG-1/45 3/4 20 41 118,5 138,5 15

1 25 41 118,5 158,5 17

DKG-1/60 3/4 20 41 118,5 138,5 15

1 25 41 118,5 138,5 17

DKG-1/90 3/4 20 41 118,5 138,5 15

1 25 41 118,5 158,5 17


G * D1 D2 A1 A2 A3 A4 weight(g) **

DKG-1/1 1/4 45 50 - - - ca. 68 850

1/2 45 50 - - - ca. 68 850

3/4 45 50 - - - ca. 68 850

1 45 50 - - - ca. 68 850

DKG-1/2 1/4 45 50 - - - ca. 68 850

1/2 45 50 - - - ca. 68 850

3/4 45 50 - - - ca. 68 850

1 45 50 - - - ca. 68 850

DKG-1/4 1/4 45 50 - - - ca. 68 850





1/2 45 50 - - - ca. 68 850

3/4 45 50 - - - ca. 68 850

1 45 50 - - - ca. 68 850

DKG-1/8 1/2 45 50 - - - ca. 68 850

3/4 45 50 - - - ca. 68 850

1 45 50 - - - ca. 68 850

DKG-1/10 1/2 45 50 - - - ca. 68 850

3/4 45 50 - - - ca. 68 850

1 45 50 - - - ca. 68 850

DKG-1/15 1/2 45 50 - - - ca. 68 850

3/4 45 50 - - - ca. 68 850

1 45 50 - - - ca. 68 850

DKG-1/24 1/2 45 50 - - - ca. 68 850

3/4 45 50 - - - ca. 68 850

1 45 50 - - - ca. 68 850

DKG-1/30 3/4 45 50 - - - ca. 68 850

1 45 50 - - - ca. 68 850

DKG-1/45 3/4 45 50 - - - ca. 68 850

1 45 50 - - - ca. 68 850

DKG-1/60 3/4 45 50 - - - ca. 68 850

1 45 50 - - - ca. 68 850

DKG-1/90 3/4 45 50 - - - ca. 68 850





1 45 50 - - - ca. 68 850

*NPT thread on request

** Weight of the connectiong cable, 2m aprox. 80g

11.3 Replacement partsThe following spare parts drawing provides an example of the configuration of aDKG-1 ATEX Type flow monitor. The actual configuration may vary depending onthe model.

Technical dataReplacement parts


Item No. ofpieces

Description

1 1 Process connection (inlet)

2 2 O-Ring (glass buffer)

3 2 O-Ring (seal)

4 1 Sight glass

5 1 Device housing

6 6 Hex socket screw

7 1 Float body

8 2 Magnet

9 1 Spring

10 1 Process connection (outlet)

11 2 Guide rail

12 4 Fixing screw (guide rail)

13 1 Switch contact with cable

14 2 Washer

15 2 Fixing screw

Technical dataReplacement parts


12 AppendixThe required tools are specified inChapter 11.3 "Tools" of the OperatingInstructions for "DKG-1 ModuleBASICS".

In explosion-hazard zones, tools whichmay cause sparks, are not to beemployed. These tools may only beemployed when there is no potentiallyexplosive atmosphere present.

The use of steel tools, of any kind, isprohibited in hazard zone 1, whenthere is a risk of explosion due to sub-stances in explosion hazard group IIC(in accordance with IEC/TR360079-20), (for example, acetylene,hydrogen).

Appendix


13 IndexAApplicable Documents . . . . . . . . . 24Application . . . . . . . . . . . . . . . . . . 8Atmosphere . . . . . . . . . . . . . . . . 24

CCategorization . . . . . . . . . . . . . . . 24

mechanical component . . . . . . 16Contact . . . . . . . . . . . . . . . . . . . . 6Contact protection measures . . . . . 39Copyright . . . . . . . . . . . . . . . . . . . 3Correct use in accordance withthese instructions . . . . . . . . . . . . . 8Customer service . . . . . . . . . . . . . 6

DDevice

electrical component . . . . . . . . 24exterior . . . . . . . . . . . . . . . . . 14interior . . . . . . . . . . . . . . . . . . 14

Device category . . . . . . . . . . . . . . 24Device group . . . . . . . . . . . . . . . . 24Disassembly . . . . . . . . . . . . . . . . 44disposal . . . . . . . . . . . . . . . . . . . 44

EElectrical connection . . . . . . . . . . 39Environmental protection regula-tions . . . . . . . . . . . . . . . . . . . . . . 39

GGeneral

safety . . . . . . . . . . . . . . . . . . . 7Grounding . . . . . . . . . . . . . . . . . . 39

IIgnition protection category . . . . . . 24Initial start-up . . . . . . . . . . . . . . . 39Installation . . . . . . . . . . . . . . . . . 39

LLimitation of liability . . . . . . . . . . . . 3Limiting contacts . . . . . . . . . . . . . 24List of media . . . . . . . . . . . . . . . . 19

MMaintenance . . . . . . . . . . . . . . . . 43

OOperating data

mechanical component . . . . . . 36switch unit . . . . . . . . . . . . . . . 36

Operation . . . . . . . . . . . . . . . . . . 41

PPackaging . . . . . . . . . . . . . . . . . . 38Personnel . . . . . . . . . . . . . . . . . . 12Precautions

explosion . . . . . . . . . . . . . . . . 11general . . . . . . . . . . . . . . . . . 10

Protective systems . . . . . . . . . . . . 13

RReplacement parts . . . . . . . . . . . . 49Return Materials Authorization . . . . 43

SSafety equipment . . . . . . . . . . . . . 13Safety information

mechanical component . . . . . . 15Safety regulations . . . . . . . . . . . . 39Service . . . . . . . . . . . . . . . . . . . . . 6Sight glass

protection . . . . . . . . . . . . . . . 39Storage . . . . . . . . . . . . . . . . . . . 38Symbols used

in the instructions . . . . . . . . . . . 7

Index


TTechnical data

Dimension sheet . . . . . . . . . . . 45Temperature class . . . . . . . . . . . . 24Temperature class internal: TX,external: TX . . . . . . . . . . . . . . . . 18

Tools . . . . . . . . . . . . . . . . . . 39, 51Transport . . . . . . . . . . . . . . . . . . 38Troubleshooting . . . . . . . . . . . . . . 42

WWarranty and guarantee provisions . 6

Index


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