WIKA A2G-70 Operating instructions

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Duct sensor for relative humidity

and temperature, model A2G-70

Operating instructions

Betriebsanleitung

Mode d'emploi

Manual de instrucciones

Manuale d'uso

Duct sensor for relative humidity and temperature model A2G-70

Kanalfühler für relative Feuchte und Temperatur Typ A2G-70

Capteur de gaine pour l‘humidité relative et la température A2G-70

Sensor de conducto para humedad relativa y temperatura A2G-70

S

onda di temperatura e umidità relativa per condotti A2G-

70

WIKA operating instructions air2guide model A2G-70

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Operating instructions model A2G-70 Page 3 - 12

Betriebsanleitung Typ A2G-70 Seite 13 - 22

Mode d'emploi type A2G-70 Page 23 - 32

Manual de instrucciones modelo A2G-70 Página 33 - 42

Instruzioni per l'uso modello A2G-70 Pagina 43 - 52

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-70

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1. General information 4

2. Safety 5

3. Specications 6

4.

Design and function

8

5. Transport, packaging and storage 9

6. Commissioning, operation 9

7. Maintenance and cleaning 12

8. Disposal 12

Contents

WIKA operating instructions air2guide model A2G-70

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1. General information

■

The duct sensor for relative humidity and temperature described in

the operating instructions has been 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: TE 62.91

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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 ecient and trouble-free operation.

2. Safety

WARNING!

Before installation, commissioning and operation, ensure

that the appropriate duct sensor for relative humidity and

temperature 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

■

For measuring the relative humidity and temperature of gaseous

media in heating, ventilation and air-conditioning systems (e. g. in

fresh-air and exhaust-air ducts)

■

Designed for connection to control and display systems

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. 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

Electrical connection

Screw terminal max. 1.5 mm

2

Cable gland M16 x 1.5 for conductors with D = 8 mm max.

Power supply

DC 15 ... 24 V / AC 24 V ±10 %

Power consumption

Typically 0.5 W / 1.7 VA

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3. Specications

Dimensions in mm

Mounting ange MF19-PA

Insertion length L

Standard 140 mm

Transmitter output

Humidity: DC 0 ... 10 V, load: min. 5 kΩ

Temperature: DC 0 ... 10 V, load: min. 5 kΩ

Transmitter output 4 ... 20 mA (option)

Humidity: 4 ... 20 mA, load < 500 Ω for DC 24 V

Temperature: 4 ... 20 mA, load < 500 Ω for DC 24 V

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3. Specications / 4. Design and function

Ingress protection

IP 65 per EN 60529 / lEC 529 (connection head)

For further specications see WIKA data sheet TE 62.91 and the order

documentation.

4. Design and function

4.1 Description

Design

CE conformity: 2004/108/EC electromagnetic compatibility

Product safety: 2001/95/EC product safety

EMC: EN 607301: 2002

Product safety: EN 607301: 2002

Accuracy

Humidity: ±3 % between 20 … 80 % rH

Temperature: ±1 % between 5 … 45 °C

Scale range / measuring range

Humidity: 0 … 100 % rH

Temperature: -20 … +80 °C

Permissible temperature

Ambient: -20 … +70 °C

Sensor tip: max. 60 °C

4.2 Scope of delivery

Cross-check scope of delivery with delivery note.

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5. Transport, packaging and storage

5.1 Transport

Duct sensor for relative humidity and temperature for any damage that

may have been caused by transport.Obvious damage must be reported

immediately.

5.2 Packaging

Do not remove packaging until just before mounting.

Keep the packaging as it will provide optimum protection during trans-

port (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.

6. Commissioning, operation

Installation and mechanical connection

■

Protect measuring instruments from contamination, high temperature

changes and vibrations

■

In order to avoid any additional heating, the instruments must not

be exposed to direct solar irradiation while in operation.

■

The duct humidity sensor for relative humidity and temperature

can be fastened directly to the ventilation duct using either a

mounting ange or screws.

5. Transport, packaging ... / 6. Commissioning, operation

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DRW_TH0.04a

Out Temp 0-10V

Out R

H

0-10V

U

B

15-24V=/ 24V~

Gnd

Temp. sensor

(option)

Load

Connection diagram for output 4 ... 20 mA (standard)

6. Commissioning, operation

Electrical connection

Connection diagram

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

(SELV). The transmitters must be operated at a constant operating

voltage (±0.2 V). Current/voltage spikes from switching the power

supply on or o must be prevented by the customer.

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DRW_TH0.05

U

B

15-24 V=

GND / Temp Out 4-20 mA

U

B

15-24 V=

GND / rF/rH Out 4-20 mA

Temp.

Oset

rF / rH

Oset

Connection diagram for output 4 ... 20 mA (option)

Note

If only the humidity output is used, U

B

15 ... 24 V= (temp.) must be bridged to

U

B

15 ... 24 V= (rF/rH) and the temperature output "GND / Temp Out 4 ... 20 mA"

must be bridged to GND of the voltage supply.

6. Commissioning, operation

Mounting instructions

Max. air velocity 10 m/s

Notes for users

Due to air circulation, dirt and dust particles might occur on the sintered

lter that protects the sensors; these particles might impair the sensor

function. After dismounting the lter, it may be cleaned by blowing it out

using oil-free and ltered compressed air, ultrapure air or nitrogen or

washing it using distilled water. Filters that are too heavily soiled should

be replaced.

Do not touch the delicate humidity sensors as this voids warranty.

If used in aggressive gas atmospheres, an early recalibration or replace-

ment of the humidity sensors might be required. Such a recalibration or

possible sensor replacement is not covered by warranty.

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7. Maintenance and cleaning / 8. Disposal

7. Maintenance and cleaning

The duct sensor for relative humidity and temperature is maintenance-

free and oers long service life provided it is handled and operated

properly.

Clean the instruments with a moist cloth (soap water).

Repairs must only be carried out by the manufacturer or appropriately

qualied skilled personnel.

8. 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-

specic waste disposal regulations.

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