WIKA GDM-100-TA Manuel utilisateur

Operating instructions

Betriebsanleitung

Mode d‘emploi

Manual de instrucciones

EN

DE

FR

ES

Gasdichtewächter, Typ GDM-100-TI/TA

Model GDM-100-TI

Gas density monitor, model GDM-100-TI/TA

Model GDM-100-TA

Densimètre, type GDM-100-TI/TA

Densimetro, modelo GDM-100-TI/TA

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WIKA operating instructions, models GDM-100-TI, GDM-100-TA

EN

DE

FR

ES

WIKA

®

is a registered trademark in various countries.

WIKA

®

ist eine geschützte Marke 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!

Lire le mode d‘emploi avant de commencer toute opération !

A conserver pour une utilisation ultérieure !

¡Leer el manual de instrucciones antes de comenzar cualquier trabajo!

¡Guardar el manual para una eventual consulta!

Betriebsanleitung Typ GDM-100-TI/TA Seite 25 - 46

Operating instructions model GDM-100-TI/TA Page 3 - 24

Mode d‘emploi type GDM-100-TI/TA Seite 47 - 68

Betriebsanleitung modelo GDM-100-TI/TA Seite 69 - 91

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Contents

1. General information 4

2. Design and function 5

3. Safety 6

4. Transport, packaging and storage 11

5. Commissioning, operation 12

6. Faults 17

7. Maintenance, cleaning and recalibration 19

8. Dismounting, return and disposal 20

9. Specifications 21

Contents

Declarations of conformity can be found online at www.wika.com.

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1. General information

■

The instrument described in the operating instructions has been designed and

manufactured using state-of-the-art technology. All components are subject to strin-

gent quality and environmental criteria during production. Our management systems

are certified to ISO 9001 and ISO 14001.

■

These operating instructions contain important information on handling the instru-

ment. Working safely requires that all safety instructions and work instructions are

observed.

■

Observe the relevant local accident prevention regulations and general safety regula-

tions 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 on to 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 modifications.

■

Further information:

- Internet address: www.wika.de / www.wika.com

- Relevant data sheets:

SP 60.05 Model GDM-100-TI

SP 60.06 Model GDM-100-TA

- Application consultant: Tel.: +49 9372 132-0

Fax: +49 9372 132-406

info@wika.de

1. General information

5WIKA operating instructions, models GDM-100-TI, GDM-100-TA

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Gas density monitor with integrated transmitter

Model GDM-100-TI

Gas density monitor with built-in transmitter

Model GDM-100-TA



Product label



Electrical connection, cable socket



Transmitter



Process connection, spanner flats



Process connection, thread



Electrical connection, transmitter



Electrical connection, switch contacts



Process connection, spanner flats



Process connection, thread



Extension for transmitter



Product label, transmitter



Product label, gas density monitor

2. Design and function

2.1 Overview

2. Design and function

2.2 Description

Switch contacts

The switch contacts permanently installed in the gas density monitor close or open at

set limit values, depending on the switching function. Switching functions are: Normally

closed, normally open, change-over contact.

The magnetic snap-action contacts are auxiliary current switches which open or close

connected electric circuits via a contact arm which is moved by the instrument pointer.

2.3 Scope of delivery

Cross-check scope of delivery with delivery note.

























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3. Safety

3.1 Explanation of symbols

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.

Information

... points out useful tips, recommendations and information for efficient

and trouble-free operation.

3.2 Intended use

Wherever the gas density of SF₆ gas has to be indicated locally and, at the same time,

circuits need to be switched, the model GDM-100 gas density monitor finds its use. The

transmitter transmits the measured gas density as an electrical signal.

Gas density monitors are modified contact pressure gauges, specially developed for the

use of SF₆ gas. Temperature influences acting on the enclosed SF₆ gas are compensat-

ed by a compensation system.

The gas density monitors are specially designed for the respective application in switch-

gear (pure SF₆ gas, gas mixtures, calibration pressure, switch points ...). Before use,

check whether this instrument is suitable for the intended application.

Only use the instrument in applications that lie within its technical performance limits

(e.g. max. ambient temperature, material compatibility, ...).

→ For performance limits see chapter 9 “Specifications”.

This instrument is not permitted to be used in hazardous areas!

The instrument has been designed and built solely for the intended use described here,

and may only be used accordingly.

3. Safety

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The technical specifications contained in these operating instructions must be

observed. Improper handling or operation of the instrument outside of its technical

specifications requires the instrument to be taken out of service immediately and

inspected by an authorised WIKA service engineer.

The manufacturer shall not be liable for claims of any type based on operation contrary

to the intended use.

3.3 Improper use

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 different to the intended use is considered as improper use.

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.

The operator is obliged to maintain the product label in a legible condition.

To ensure safe working on the instrument, the operating company must ensure

■

that suitable first-aid equipment is available and aid is provided whenever required.

■

that the operating personnel are regularly instructed in all topics regarding work

safety, first aid and environmental protection and know the operating instructions and

in particular, the safety instructions contained therein.

■

that the instrument is suitable for the particular application in accordance with its

intended use.

■

that personal protective equipment is available.

3. Safety

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3.5 Personnel qualification

WARNING!

Risk of injury should qualification be insufficient

Improper handling can result in considerable injury and damage to equip-

ment.

▶

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-specific regulations, current stand-

ards and directives, are capable of carrying out the work described and independently

recognising potential hazards.

Specically when using SF₆ gas

The plant operator must ensure that the handling of SF

6

gas is only carried out by a

qualied company or by qualied persons who have been specially trained in accord-

ance with IEC 61634, section 4.3.1 or IEC 60480, section 10.3.1.

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.

Safety goggles in accordance with EN 166, class 2, mechanical

strength class S

The safety goggles must be worn over the entire period when working on

hoses or gas containers (e.g. gas cylinders, tanks).

The safety goggles protect the eyes from any flying particles, escaping

gas and liquid splashes.

Protective gloves against heat in accordance with EN ISO 13732-1

and against cold in accordance with EN ISO 13732-3

The protective gloves must be worn over the entire period when working

on hoses, gas containers (e.g. gas cylinders, tanks) or components which

heat up to over 60 °C.

3. Safety

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3.7 Handling of insulating gases and gas mixtures

SF₆ gas is a greenhouse gas which is listed in the Kyoto Protocol. SF₆ gas must not be

released into the atmosphere, but must be collected in suitable containers.

Properties of insulating gases

■

Colourless and odourless

■

Chemically neutral

■

Inert

■

Not flammable

■

Heavier than air

■

No toxicity

■

No damage to the ozone layer

Detailed information is given in IEC 60376 and IEC 61634.

Danger of suocation caused by insulating gases and gas mixtures

High concentrations of gases can lead to asphyxiation, since breathable air is displaced

from the lungs with the inhalation of gas.

Since SF₆ gas is heavier than air, it collects, especially, at ground level or lower-lying

rooms below the reference level (e.g. cellars). This is particularly dangerous since SF₆

gas is colourless and odourless and thus may be imperceptible to people.

3.8 Danger caused by decomposition products

Insulating gas in electrical systems may contain decomposition products generated by

electric arcs:

■

Gaseous sulphur fluorides

■

Sulphur hexafluorides

■

Solid and atomized metal fluorides, metal sulfides, metal oxides

■

Hydrogen fluoride

■

Sulphur dioxide

Decomposition products can be harmful to health.

■

They can cause poisoning by inhalation, ingestion or contact with the skin.

■

They may be irritating to the eyes, the respiratory system or the skin and burn them.

■

Inhalation of large quantities may damage the lungs.

Observe the following safety instructions in order to avoid danger from insulating gas:

■

Wear personal protective equipment.

■

Read the material safety data sheet of the gas supplier.

■

With large leaks, evacuate the area quickly.

■

Ensure good ventilation.

■

Ensure the leak tightness of the equipment with a leak detector (e.g. model GIR-10).

3. Safety

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3. Safety

3.9 Applicable standards and directives for installation, assembly, commissioning

■

BGI 753 (SF₆ plants and equipment in Germany)

■

IEC 61634 (Handling of SF₆ gas)

■

IEC 60376 (New SF₆ gas, technical grade SF₆ gas)

■

IEC 60480 (Used SF₆ gas)

■

CIGRE report 276, 2005 (Practical SF₆ gas handling instructions)

Leaks during operation:

■

IEC 60376 (New SF₆ gas, technical grade SF₆ gas)

■

IEC 60480 (Used SF₆ gas)

■

CIGRE 2002 (“SF₆ gas in the electrical industry”)

SF

6

is a colourless and odourless, chemically neutral, inert and non-am-

mable gas which is approx. ve times heavier than air, non-toxic and not

harmful to the ozone layer.

Detailed information is given in IEC 60376 and IEC 61634.

3.10 Labelling, safety marks

Product label (gas density monitor)



Model designation



Pin assignment



Case filling



P# Product No.



Date of manufacture



Switching thresholds



Electrical characteristics



Model designation of the switch contact

Dichtewächter mit Kontakteinrichtung

Density monitor with alarm contacts

Schaltzustand bei Skalenanfangswert / Status of switch at minimum scale value Made in Germany

















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3. Safety / 4. Transport, packaging and storage

Product label (transmitter)



Model designation



Measuring range



Output signal



Power supply



S# Article No.



P# Product No.



Pin assignment



Date of manufacture

4. Transport, packaging and storage

4.1 Transport

Check the instrument for any damage that may have been caused by transport.

Obvious damage must be reported immediately.

CAUTION!

Damage through improper transport

With improper transport, a high level of damage to property can occur.

▶

When unloading packed goods upon delivery as well as during internal

transport, proceed carefully and observe the symbols on the packaging.

▶

With internal transport, observe the instructions in chapter 4.2 “Packag-

ing and storage”.

4.2 Packaging and storage

Do not remove packaging until just before mounting.

Keep the packaging as it will provide optimum protection during transport (e.g. change

in installation site, sending for repair).















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WARNING!

Physical injuries and damage to property and the environment

caused by hazardous decomposition products

Before storing the instrument, any residual decomposition products must

be removed.

▶

For cleaning, see chapter 7.2 “Cleaning”

Permissible conditions at the place of storage:

■

Storage temperature: -40 ... +60 °C

■

Humidity: 45 ... 75 % r.h. (non-condensing)

Avoid exposure to the following factors:

■

Soot, vapour, dust and corrosive gases

■

Hazardous environments, flammable atmospheres

Store the instrument in its original packaging in a location that fulfils the conditions

listed above. If the original packaging is not available, pack and store the instrument as

described below:

1. Place the instrument, along with the shock-absorbent material, in the packaging.

2. If stored for a prolonged period of time (more than 30 days), place a bag containing

a desiccant inside the packaging.

5. Commissioning, operation

5.1 Mechanical mounting

CAUTION!

Physical injuries and damage to property and the environment

through faulty instrument

Prior to commissioning, the instrument must be subjected to a visual

inspection. Only use the instrument if it is in perfect condition with respect

to safety.

5.1.1 Requirements for the installation point

■

For outdoor applications, the selected installation location has to be suitable for the

specified ingress protection, so that the instrument is not exposed to impermissible

weather conditions.

■

The sealing faces at the instrument and at the measuring point have to be undam-

aged and clean.

4.Transport, ... / 5. Commissioning, operation

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5.1.2 Installation

■

With transport or storage, it can occur that gas density monitors warm up or cool down

and this results in pointer movements. These pointer movements are caused by the

compensation system. To make sure that the instruments have adapted sufficiently to

ambient temperature, at least 2 hours at 20 °C must be allowed for adaptation to the

temperature. Then, in the depressurised state, the pointer will sit within the tolerance

bar.

■

Corresponding to the general technical rules for pressure gauges (e.g. EN 837-2

“Selection and installation recommendations for pressure gauges”) when screwing in

the instrument, the force required to do this must not be applied through the case, but

only through the spanner flats provided for this purpose and using a suitable tool.

■

When screwing in, do not tilt the threads.

For parallel threads, use flat gaskets, lens-type sealing rings or WIKA profile sealings

at the sealing face . With tapered threads (e.g. NPT threads), sealing is made in the

threads , using a suitable sealing material (EN 837-2).

The tightening torque depends on the sealing used. In order to orientate the measuring

instrument so that it can be read as well as possible, a connection with LH-RH union or

union nut should be used. When a blow-out device is fitted to an instrument, it must be

protected against being blocked by debris and dirt.

5.1.3 Temperature load

The installation of the instrument should be made in such a way that the permissible

operating temperature, also considering the effects of convection and thermal radiation,

neither exceeds nor falls below the permissible limits.

The influence of temperature on the indication and measurement accuracy must be

observed.

5.2 Electrical mounting of the gas density monitor

■

The instrument must be grounded via the process connection.

■

For cable outlets, make sure that no moisture enters at the cable end.

■

Select a cable diameter that matches the cable bushing of the connector. Make sure

that the cable gland of the mounted plug has a tight fit and that the seals are present

and undamaged. Tighten the threaded connection and check that the sealing is

correctly seated, in order to ensure the ingress protection.

■

Connection details and switching functions are given on the product label. Connec-

tion terminals and ground terminal are appropriately marked.

Sealing in the thread 

Spanner ats

Sealing face 

5. Commissioning, operation

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5.2.1 Limit values for the contact load with resistive load

gas-filled instruments liquid-filled instruments

Maximum rated operating

voltage Ueff

AC 250 V AC 250 V

Rated operating current

Switch-on current 1 A 1 A

Switch-off current 1 A 1 A

Continuous current 0.6 A 0.6 A

Maximum switching power 30 W, 50 VA 20 W, 20 VA

Do not exceed the limit values. In order to permanently ensure safe operation, the

following load values are recommended:

Voltage

(per IEC 38)

gas-filled instruments liquid-filled instruments

resistive load inductive

load

resistive load inductive load

DC/AC DC AC cos ϕ >0.7 DC AC cos ϕ >0.7

230 V 100 mA 120 mA 65 mA 65 mA 90 mA 40 mA

110 V 200 mA 240 mA 130 mA 130 mA 180 mA 85 mA

48 V 300 mA 450 mA 200 mA 190 mA 330 mA 130 mA

24 V 400 mA 600 mA 250 mA 250 mA 450 mA 150 mA

The switching current must not be less than 20 mA with low voltages for switching relia-

bility reasons.

For higher loads, and for instruments with liquid-lled cases, WIKA model

905.1X contact protection relays are recommended

Overcurrent protectors

The instruments do not provide for incorporated overcurrent protectors. Should protec-

tors be required, the following values in accordance with EN 60 947-5-1 are to be

recommended.

■

Voltage 24 V: 2 A

■

Voltage 250 V: 1 A

5. Commissioning, operation

15WIKA operating instructions, models GDM-100-TI, GDM-100-TA

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5.2.2 Contact protection measures

Mechanical contacts must not exceed the specified electrical values for switching

current, switching voltage and switching power independent of each other, not even for

a short time only.

For capacitive or inductive loads we recommend one of the following protective circuits:

Inductive load with DC voltage

With DC voltage the contact protection can be achieved via a free-wheeling diode,

connected in parallel to the load. The polarity of the diode must be arranged so that it

closes when the operating voltage is on.

Inductive load with AC voltage

With AC voltage two protection measures are possible:

Example:

Contact protection

measure with free-

wheeling diode

Contact

Diode

Load

Example:

Contact protection

measure with

voltage-dependent

resistor VDR

Example:

Contact protection

measure with RC

element

Load

5. Commissioning, operation

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Capacitive load

With capacitive loads elevated switch-on currents arise. These can be reduced by

series-connecting resistors in the supply line.

5.3 Electrical mounting of the transmitter

Requirements for voltage supply

Power supply: DC 10 ... 30 V

The supply must be made via an energy-limited circuit in accordance with IEC 61010-1.

Requirements for electrical connection

■

Cable diameter matches the cable bushing of the mating connector.

■

Cable gland and seals of the mating connector are correctly seated.

■

With cable outlets, no humidity can ingress at the cable end.

Requirement for shielding and grounding

The transmitter is grounded via the process connection of the gas density monitor. The

transmitter is connected with the process connection of the gas density monitor via the

mounting.

Pin assignment

Examples: Contact protection measure with current-limiting resistor

Load Load

U

B

R

1

U

B

R

1

Transmitter, angular connector (2-pin)

+

-

U

A

UB+/Sig+

0V/Sig-

5. Commissioning, operation

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5.4 Switch point setting

The switch points have a fixed setting as standard and cannot be adjusted. Thus, an

undesired adjustment of the switch points is excluded.

With customer-specific, adjustable switch points, with the accompanying adjustment

key, the desired set point can be set via the adjustment lock in the window.

6. Faults

CAUTION!

Physical injuries and damage to property and the environment

If faults cannot be eliminated by means of the listed measures, the instru-

ment must be taken out of operation immediately.

▶

Ensure that pressure or signal is no longer present and protect against

accidental commissioning.

▶

Contact the manufacturer.

▶

If a return is needed, please follow the instructions given in chapter 9.2

“Return”.

For contact details see chapter 1 “General information” or the back page

of the operating instructions.

5. Commissioning, operation / 6. Faults

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Faults Causes Measures

Contact is no longer

switching in line with the

specification

Electrical connection is

interrupted.

Carry out a continuity test on

the electrical connection lines.

Electrical load unsuitable for

the switch contact model.

Maintain the permissible

electrical loads for the switch

contact model.

Contact contaminated.

Switching status remains

unchanged despite

reaching the switch point/

reset point

Contacts defective (e.g. fused

contact zone).

Replace instrument. Before

recommissioning the

new instrument, provide

a protective circuit for the

contact.

No pointer movement

despite change in pressure

Movement blocked. Replace instrument.

Pointer movement, even

though depressurised

Warming or cooling of the

measuring instrument (no

damage)

Let the instrument settle for 2

hours at 20 °C.

No output signal Cable break Replace connection cable

Deviating zero point signal Overpressure limit exceeded Observe the permissible

overpressure limit

Too high/low working temper-

ature

Observe the permissible

temperatures

Constant output signal

upon change in pressure

Mechanical overload caused

by overpressure

Replace instrument; if it

fails repeatedly, contact the

manufacturer

Signal span varies EMC interference sources in

the environment; for example,

frequency converter

Shield instrument; cable

shield; remove source of

interference

Signal span varies/

inaccurate

Too high/low working

temperature

Observe the permissible

temperatures

Signal span drops/too

small

Mechanical overload caused

by overpressure

Replace instrument; if it

fails repeatedly, contact the

manufacturer

For claims, the serial and product numbers must be stated. The serial number is printed

on the dial, the product number on the product label. With claims, the atmospheric

pressure and the temperature during the measurement must be given, as well as the

data on the reference standard (model, class).

6. Faults

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7. Maintenance, cleaning and recalibration

7.1 Maintenance

These gas density monitors are maintenance-free.

The indication and switching function should be checked once or twice every year. For

this the instrument must be disconnected from the gas compartment to check with a

pressure testing device.

Repairs must only be carried out by the manufacturer.

The instruments must not be opened, since this can lead to indication and switch point

errors.

7.2 Cleaning

CAUTION!

Physical injuries and damage to property and the environment

Improper cleaning may lead to physical injuries and damage to property

and the environment. Decomposition products in the dismounted instru-

ment can result in a risk to persons, the environment and equipment.

▶

Carry out the cleaning process as described below.

1. Before cleaning, correctly disconnect the instrument from the pressure supply and

switch o the current.

2. Use the requisite protective equipment.

3. Clean the instrument with a moist cloth.

Electrical connections must not come into contact with moisture!

CAUTION!

Damage to the instrument

Improper cleaning may lead to damage to the instrument!

▶

Do not use any aggressive cleaning agents.

▶

Do not use any hard or pointed objects for cleaning.

4. Wash or clean the dismounted instrument, in order to protect people and the environ-

ment from exposure to residual decomposition products.

Information on returns can be found under the heading “Service” on our

local website.

7.3 Calibration

The gas density monitor can be calibrated via a special calibration system for gas densi-

ty measuring instruments (e.g. WIKA BCS-10).

The gas density monitor must be dismounted professionally. In this case, it may be

necessary to take the entire system temporarily out of service.

7. Maintenance, cleaning and recalibration

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8. Dismounting, return and disposal

8.1 Dismounting

WARNING!

Physical injuries and damage to property and the environment

caused by hazardous decomposition products

Upon contact with hazardous decomposition products, there is a danger

of physical injuries and damage to property and the environment.

▶

Wear the requisite protective equipment (see chapter 3.6 “Personal

protective equipment”).

Before dismantling the instrument, evacuate the gas filling.

Only dismount the instrument when it is depressurised and free from current.

8.2 Return

WARNING!

Strictly observe the following when shipping the instrument:

All instruments delivered to WIKA must be free from any kind of hazard-

ous substances (e.g. decomposition products) and must therefore be

cleaned before being returned.

When returning the instrument, use the original packaging or a suitable transport

packaging.

To avoid damage:

1. Place the instrument, along with the shock-absorbent material, in the packaging.

Place shock-absorbent material evenly on all sides of the transport packaging.

2. If possible, place a bag containing a desiccant inside the packaging.

Information on returns can be found under the heading “Service” on our

local website.

8.3 Disposal

Incorrect disposal can put the environment at risk.

Dispose of instrument components and packaging materials in an environmentally

compatible way and in accordance with the country-specific waste disposal regulations.

8. Dismounting, return and disposal

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