WIKA A2G-45 User manual
Operating instructions
Betriebsanleitung
Mode d´emploi
Manual de instrucciones
Manuale d'uso
GB
Electronic dierential pressure switch with display, model A2G-45
Elektronischer Dierenzdruckschalter mit Anzeige, Typ A2G-45
Pressostat électronique diérentiel avec acheur, type A2G-45
Presostato diferencial electrónico con indicador, modelo A2G-45
Pressostato dierenziale elettronico con display, modello A2G-45
Electronic dierential pressure switch with
display, model A2G-45
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WIKA operating instructions air2guide model A2G-45
GB
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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
© 2012 WIKA Alexander Wiegand SE & Co. KG
All rights reserved. / Alle Rechte vorbehalten.
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
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40389228.01 09/2012 GB/D/F/E/I
Contents
Contents
1. General information 4
2. Safety 5
3. Specications 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
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1. General information
1. General information
■
The electronic dierential 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 certied 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 insuciently quali-
ed skilled personnel or unauthorised modications to the instru-
ment.
■
The general terms and conditions contained in the sales documenta-
tion shall apply.
■
Subject to technical modications.
■
Further information:
- Internet address: www.wika.de / www.wika.com
www.air2guide.com
- relevant data sheet: SP 69.08
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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 ecient and trouble-free operation.
2. Safety
WARNING!
Before installation, commissioning and operation, ensure
that the appropriate dierential pressure switch has been
selected in terms of measuring range, design and specic
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 dierential pressure switch is used for monitoring the
dierential pressure of air and other non-inammable 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.
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2. Safety / 3. Specications
2.2 Personnel qualication
WARNING!
Risk of injury should qualication be insucient!
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 qualications 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-specic 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. Specications
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)
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3. Specications
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 specications see WIKA data sheet SP 69.08 and the order
documentation.
Weight
150 g
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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 dierential pressure switch for any damage that may have
been caused by transport. Obvious damage must be reported immedi-
ately.
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6. Commissioning, operation
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 specications
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
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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
MENU
BACK
OK
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