WIKA 7 Series Manual de usuario

Model 732.51.100 per ATEXModel 732.14.100 per ATEX

Operating instructions

Betriebsanleitung

Mode d'emploi

Manual de instrucciones

Pressure gauge model 7, NS 100 and NS 160 per ATEX

Manometer Typ 7, NG 100 und NG 160 nach ATEX

Manomètre type 7, diam. 100 et diam. 160 selon ATEX

Manómetro modelo 7, DN 100 y DN 160 según ATEX

2WIKA operating instructions pressure gauge model 7 per ATEX

2080284.08 02/2021 EN/DE/FR/ES

Operating instructions model 7 per ATEX Page 3-16

Betriebsanleitung Typ 7 nach ATEX Seite 17-30

Mode d’emploi type 7 selon ATEX Page 31-44

Manual de instrucciones modelo 7 según ATEX Página 45-58

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 posterior!

3WIKA operating instructions pressure gauge model 7 per ATEX

2080284.08 02/2021 EN/DE/FR/ES

1. General information 4

2. Safety 5

3. Specications 10

4. Design and function 11

5. Transport, packaging and storage 12

6. Commissioning, operation 12

7. Maintenance and cleaning 14

8. Dismounting and disposal 15

Annex: EU declaration of conformity 16

Contents

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

WIKA operating instructions pressure gauge model 7 per ATEX4

2080284.08 02/2021 EN/DE/FR/ES

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

stringent quality and environmental criteria during production. Our management

systems are certied to ISO 9001 and ISO 14001.

These operating instructions contain important information on handling the

instrument. Working safely requires that all safety instructions and work instruc-

tions are observed.

Observe the relevant local accident prevention regulations and general safety

regulations for the instrument's range of use.

The operating instructions are part of the product and must be kept in the

immediate vicinity of the instrument and readily accessible to skilled personnel

at any time.

Skilled personnel must have carefully read and understood the operating

instructions prior to beginning any work.

The manufacturer's liability is void in the case of any damage caused by using

the product contrary to its intended use, non-compliance with these operating

instructions, assignment of insuciently qualied skilled personnel or unauthor-

ised modications to the instrument.

The general terms and conditions contained in the sales documentation shall

apply.

Subject to technical modications.

Further information:

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

- Relevant data sheet: PM 07.05, PM 07.13

Explanation of symbols

WARNING!

... indicates a potentially dangerous situation that can result in

serious injury or death, if not avoided.

Information

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

ecient and trouble-free operation.

WARNING!

... indicates a potentially dangerous situation in the hazardous area

that results in serious injury or death, if not avoided.

5WIKA operating instructions pressure gauge model 7 per ATEX

2080284.08 02/2021 EN/DE/FR/ES

2. Safety

WARNING!

Before installation, commissioning and operation, ensure that the

appropriate instrument has been selected in terms of measuring

range, design and specic measuring conditions.

Check the compatibility with the medium of the materials subjected

to pressure!

In order to guarantee the measurement accuracy and long-term

stability specied, the corresponding load limits must be observed.

Non-observance can result in serious injury and/or damage to the

equipment.

Further important safety instructions can be found in the individual

chapters of these operating instructions.

2.1 Intended use

These instruments are used for measuring pressure in hazardous areas of indus-

trial applications.

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

here, and may only be used accordingly.

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

contrary to the intended use.

2.2 Personnel qualication

WARNING!

Risk of injury should qualication be insucient!

Improper handling can result in considerable injury and damage to

equipment.

The activities described in these operating instructions may only

be carried out by skilled personnel who have the qualications

described below.

WIKA operating instructions pressure gauge model 7 per ATEX6

2080284.08 02/2021 EN/DE/FR/ES

2. Safety

Skilled personnel

Skilled personnel are understood to be personnel who, based on their techni-

cal training, knowledge of measurement and control technology and on their

experience and knowledge of country-specic regulations, current standards

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

recognising potential hazards.

2.3 Safety instructions for pressure gauges per ATEX

WARNING!

Non-observance of these instructions and their contents may result

in the loss of explosion protection.

WARNING!

It is imperative that the application conditions and safety require-

ments of the operating instructions are followed.

▶

Instruments must be grounded via the process connection.

Permissible ambient temperature

-20 ... +60 °C

-40 ... +60 °C (optional, only silicone oil lling)

-70 ... +60 °C (optional, for model 733.51 low-temperature version)

Attention! With gaseous media, the temperature may increase as a result of

compression warming. In these cases it may be necessary to throttle the rate of

change of pressure or reduce the permissible medium temperature.

Permissible medium temperature

≤ 100 °C

≤ 150 °C (option)

≤ 200 °C (option)

The permissible medium temperature does not only depend on the instrument

design, but also on the ignition temperature of the surrounding gases, vapours or

dusts. Both aspects have to be taken into account.

7WIKA operating instructions pressure gauge model 7 per ATEX

2080284.08 02/2021 EN/DE/FR/ES

Maximum surface temperature

The surface temperature of the instruments mainly depends on the medium

temperature of the application. For determining the maximum surface tempera-

ture, besides the medium temperature also other inuences such as the ambient

temperature and, if applicable, the solar irradiation must be taken into account.

Potentially explosive gas atmosphere

Required temperature class

(ignition temperature of

gas or vapour)

Maximum permissible medium temperature

(in the measuring system)

Unlled instruments Filled instruments

T6 (T > 85 °C) +65 °C +65 °C

T5 (T > 100 °C) +80 °C +80 °C

T4 (T > 135 °C) +105 °C +100 °C

T3 (T > 200 °C) +160 °C +100 °C

T2 (T > 300 °C) +200 °C +100 °C

T1 (T > 450 °C) +200 °C +100 °C

Hazardous dust atmosphere

For dusts, the procedure specied in ISO/IEC 80079-20-2 for determining the

ignition temperature has to be applied.The ignition temperature is determined

separately for dust clouds and dust layers, respectively. For dust layers, the

ignition temperature depends on the dust layer thickness per IEC/EN 60079-14.

Ignition temperature

of dust

Maximum permissible medium temperature

(in the measuring system)

Dust cloud: Tcloud < 2/3 Tcloud

Dust layer: Tlayer < Tlayer − 75 K − (reduction depending on the layer thickness)

The permissible maximum medium temperature must not exceed the lowest

determined value, even in case of a malfunction.

Explosive atmosphere consisting of hybrid mixtures

The instruments must not be used in areas in which an atmosphere consisting of

explosive hybrid mixtures (dusts mixed with gases) can occur.

2. Safety

WIKA operating instructions pressure gauge model 7 per ATEX8

2080284.08 02/2021 EN/DE/FR/ES

2.4 Special hazards

WARNING!

For hazardous media such as oxygen, acetylene, ammable or

toxic gases or liquids, and refrigeration plants, compressors, etc., in

addition to all standard regulations, the appropriate existing codes or

regulations must also be followed.

For additional important safety instructions see chapter 2.3 “Safety instructions

for pressure gauges per ATEX”.

WARNING!

Residual media in dismounted instruments can result in a risk to

persons, the environment and equipment.

Take sucient precautionary measures.

2.5 Labelling / safety marks

Dial

ATEX marking:

II 2 G c TX X

II 2 D c TX X

Serial number

Product label

Model

Year of manufacture





2. Safety

9WIKA operating instructions pressure gauge model 7 per ATEX

2080284.08 02/2021 EN/DE/FR/ES

Before mounting and commissioning the instrument, ensure

you read the operating instructions!

The instrument bearing this mark is a safety pressure gauge with a

solid bae wall in accordance with EN 837.

2.6 Special conditions for safe use (X conditions)

Pressure surges must be avoided at all costs. Open the shut-o valves slowly.

Temperature increases due to compression warming absolutely must be taken

into account. In these cases it may be necessary to throttle the rate of change

of pressure or reduce the permissible medium temperature.

The end user must ensure that the instrument is connected to the equipotential

bonding of the end-use application via the process connection.The sealings

used at the process connection must be electrically conductive. Alternatively,

take other measures for grounding.

Avoid handling substances that might react dangerously with the materials of

the instrument.

Avoid handling substances that are liable to spontaneous combustion.

2. Safety

WIKA operating instructions pressure gauge model 7 per ATEX10

2080284.08 02/2021 EN/DE/FR/ES

3. Specications

Pressure limitation

Steady: Full scale value

Fluctuating: 0.9 x full scale value

Max. working pressure / overload safety, models 73X.31, 73X.51

Scale range max. working pres-

sure (static pressure)

Overload safety, either

side

Standard Option Standard Option

0 ... 16 to 0 ... 40 mbar 2.5 6 2.5 -

0 ... 60 to 0 ... 250 mbar 6 10 2.5 6

0 ... 400 mbar 25 40 4 40

0 ... 0.6 bar 25 40 6 40

0 ... 1 bar 25 40 10 40

0 ... 1.6 bar 25 40 16 40

0 ... 2.5 to 0 ... 25 bar 25 40 25 40

Overload safety, models 73X.14, 76X.14

40, 100, 250 or 400 bar

Materials of wetted parts

Process connection, media chamber, measuring ange: Stainless steel, Monel

(only model 76X.14)

Models Pressure element

73X.31, 73X.51 Scale range ≤ 0.25 bar: Stainless steel

Scale range > 0.25 bar: NiCr-alloy (Inconel)

73X.14 Stainless steel/NiCr-alloy (Inconel) or Hastelloy (option)

76X.14 Monel or Monel/Hastelloy (option)

Sealing (only models 73X.14, 76X.14): FPM/FKM

Vent screws for media chamber:

Stainless steel (optional for scale ranges ≥ 0.4 bar)

Materials of non-wetted parts

Movement, case, bayonet ring: Stainless steel

Dial and pointer: Aluminium

Window: Laminated safety glass

3. Specications

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