WIKA A2G-45 Manual de usuario

Operating instructions

Betriebsanleitung

Mode d´emploi

Manual de instrucciones

Manuale d'uso

Electronic dierential pressure switch with display, model A2G-45

Elektronischer Dierenzdruckschalter mit Anzeige, Typ A2G-45

Pressostat électronique diérentiel avec acheur, type A2G-45

Presostato diferencial electrónico con indicador, modelo A2G-45

Pressostato dierenziale elettronico con display, modello A2G-45

Electronic dierential pressure switch with

display, model A2G-45

WIKA operating instructions air2guide model A2G-45

40389228.01 09/2012 GB/D/F/E/I

Operating instructions model A2G-45 Page 3-13

Betriebsanleitung Typ A2G-45 Seite 15-25

Mode d'emploi type A2G-45 Page 27-37

Manual de instrucciones modelo A2G-45 Página 39-49

Manuale d'uso modello A2G-45 Pagina 51-61

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!

Prima di iniziare ad utilizzare lo strumento, leggere il manuale d‘uso!

Conservare per future consultazioni!

WIKA operating instructions air2guide model A2G-45 3

40389228.01 09/2012 GB/D/F/E/I

Contents

1. General information 4

2. Safety 5

3. Specications 6

4. Design and function 7

5. Transport, packaging and storage 8

6. Commissioning, operation 9

7. Maintenance and cleaning 13

8. Disposal 13

WIKA operating instructions air2guide model A2G-45

40389228.01 09/2012 GB/D/F/E/I

1. General information

■

The electronic dierential pressure switch with display 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 instructions 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 unauthorised modications to the instru-

ment.

■

The general terms and conditions contained in the sales documenta-

tion shall apply.

■

Subject to technical modications.

■

Further information:

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

www.air2guide.com

- relevant data sheet: SP 69.08

WIKA operating instructions air2guide model A2G-45 5

40389228.01 09/2012 GB/D/F/E/I

1. General information / 2. Safety

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.

2. Safety

WARNING!

Before installation, commissioning and operation, ensure

that the appropriate dierential pressure switch has been

selected in terms of measuring range, design and specic

measuring conditions.

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

This electronic dierential pressure switch is used for monitoring the

dierential pressure of air and other non-inammable and non-aggres-

sive gases. And also for controlling air as well for monitoring of air lters,

blowers in ventilation ducts, control of air and re shutters, for overpres-

sure monitoring in clean rooms and laboratories.

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.

WIKA operating instructions air2guide model A2G-45

40389228.01 09/2012 GB/D/F/E/I

2. Safety / 3. Specications

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.

Skilled personnel

Skilled personnel 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-specic regulations,

current standards and directives, are capable of carrying out the work

described and independently recognising potential hazards.

Explanation of symbols

CE, Communauté Européenne

Instruments bearing this mark comply with the relevant

European directives.

3. Specications

Process connection

Connecting nozzle (copper alloy), for hoses with inner diameter 4 or

6 mm

Measuring element

Piezo measuring cell

Case/cover

Plastic (ABS)/plastic (PC)

WIKA operating instructions air2guide model A2G-45 7

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3. Specications

Electrical connection

Cable gland M16 and M20, screw terminals max. 1.5 mm²

Output signal

0 … 10 V, 2-wire, load resistance min. 1 kOhm

Voltage supply

AC 24 V ±10 % or DC 21 ... 35 V

Long-term stability

≤ ±8 Pa

≤ ±1 Pa with automatic zero adjustment (option)

Dimensions in mm

Ingress protection

IP 54 per EN 60529 / lEC 529

For further specications see WIKA data sheet SP 69.08 and the order

documentation.

Weight

150 g

WIKA operating instructions air2guide model A2G-45

40389228.01 09/2012 GB/D/F/E/I

4. Design and function / 5. Transport, packaging ...

4. Design and function

4.1 Description

Design

CE conformity:

2004/108/EC electromagnetic compatibility

2002/95/EC RoHS (restriction of the use of certain hazardous

substances in electrical and electronic equipment)

Accuracy class

1.5 %

Measuring ranges

■

Variant 1: -500 ... +500 Pa (-100 .. +100 Pa, -250 ... +250 Pa,

-300 ... +300 Pa to be set via jumper) or

■

Variant 2: 0 ... 2,500 Pa (0 ... +100 Pa, 0 ... +250 Pa, 0 ... +1,000 Pa

to be set via jumper)

Pressure limitation

Maximum pressure: 25 kPa

Permissible temperature

Ambient: -20 … +70 °C

Operation: -10 … +50 °C

(-5 … +50 °C with automatic zero adjustment)

4.2 Scope of delivery

Cross-check scope of delivery with delivery note.

5. Transport, packaging and storage

5.1 Transport

Check the dierential pressure switch for any damage that may have

been caused by transport. Obvious damage must be reported immedi-

ately.

WIKA operating instructions air2guide model A2G-45 9

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6. Commissioning, operation

Installation

■

When connecting the instrument, the process lines must be free of

pressure.

■

Observe the suitability of the instrument for the media to be

measured

■

Observe maximum pressures

Electrical connection

The instruments are designed to operate with safety extra-low voltage

(SELV). When wiring up the instruments, the technical specications

for those instruments should be followed. In the case of a sensor with

transmitter, as a rule, the transmitter should be operated in the middle of

the measuring range, since deviations can occur at the range limits.

■

The ambient temperature of the transmitter electronics

should be kept constant.

■

Current/voltage spikes from switching the power supply

on or o must be prevented by the customer.

Current consumption

35 mA + switch (7 mA each) + instrument with automatic zero

adjustment (20 mA)

0 … 10 V output (10 mA), max. 80 mA

5.2 Packaging

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).

5.3 Storage

Permissible conditions at the place of storage

Storage temperature: -20 ... +70 °C

Protect the instruments from moisture and dust.

WIKA operating instructions air2guide model A2G-45

40389228.01 09/2012 GB/D/F/E/I

Key Function

To access the menu, press the "MENU" button for approx. 3

seconds.

To exit the menu, press the "BACK" button.

To open an individual menu point, and to accept the changes,

press the "OK" button.

These buttons enable you to scroll within the menu.

6. Commissioning, operation

Connection diagram

Output signal 0 ... 10 V

Power supply AC 24 V

Relay 1 (standard)

Relay 2 (option)

If the voltages being switched via the relays

are not in accordance with SELV, then the

power supply and signal/control cables of

the relays should be installed so that they

are separated. A separate cable entry is

available for both.

Commissioning

A prerequisite for the commissioning is a proper installation of all

electrical supply, control and measuring lines and of the pressure

connection lines.

■

Before commissioning, the leak tightness of the pressure

connection lines must be checked.

Buttons for setting the individual functions

BACK

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