A2G-70

On order

WIKA · Temperature measurement · Family A2G

Ventilation duct sensor

Name: Ventilation duct sensor
Brand: WIKA

For relative humidity and temperature

Range

0…50 °C

Output

Modbus® · 4...20 mA

Accuracy

< 0.5 °C

Protection

IP54

CERoHSEACKazInMetrMTSCHSUzstandardWEEE

Price

On request

Depends on configuration

Request a quote

+38 (067) 285-77-70·info@avigan.com.uaViberTelegram

Description

The model A2G-70 ventilation duct sensor is a relative humidity sensor with an integrated temperature measurement, suitable for direct mounting on circular ventilation pipes or rectangular ventilation ducts.

The adjustable mounting flange enables a quick installation. The illuminated LC display provides good readability, even from a distance. The model A2G-70 has a screwless cover for rapid wiring and commissioning.

for further approvals see page 4

Ventilation duct sensor, model A2G-70, without LC display

The measurement of relative humidity and the air temperature as the basis of demand-orientated control/ regulation is gaining ever more importance in the ventilation and air-conditioning industry. The model A2G-70 registers the relative humidity and the temperature of the air with a capacitive sensor. The sensor signals for both measurement parameters are transmitted to the control/regulation or building automation with analogue output signals (0 ... 10 V, 4 … 20 mA) or digital Modbus ® protocol.

Special features

Electrical output signal DC 0 ... 10 V or 4 … 20 mA
Modbus ® output signal
Simple mounting
Compact and robust design
Maintenance-free

Identification

Model	A2G-70
Product family	A2G
Subcategory	Ventilation duct sensor

Measuring range

Temperature ranges

+0…+50 °C

Accuracy

Accuracy class

< 0.5 °C

Process conditions

Process connection	Adjustable mounting flange
Process temperature	+0…+50 °C

Electrical characteristics

Output signal	Modbus® · 4...20 mA · DC 0 ... 10 V · 0...10 V · Modbus RTU
Power supply	AC 24 V or DC 24 V ±10 %
Electrical connection	Screw terminals max. 1.5 mm², Cable gland M16

Materials

Probe material

Polycarbonate, ABS, Plastic (ABS), LLPDP

Operating environment

Ambient temperature	−20…+70 °C
IP rating	IP54
Weight	0.15 kg

Certifications and approvals

Certifications

CERoHSEACKazInMetrMTSCHSUzstandardWEEE

Additional details

Sensor type	capacitive
Thermowell	No
Datasheet languages	EN

Tables from datasheet

Ventilation duct sensor, model A2G-70

Version	■ Version without LC display ■ Version with LC display
Measuring range
Temperature	0 …50°C[ 32 …122 °F]
Relative humidity	0…100%
Accuracy
Temperature	< 0.5 °C [0.9 °F]
Relative humidity	±3 %(with measuring range 0 ... 90 %)
Power supply U B	AC 24V or DC 24V ±10%
Power consumption	Max.110mA
Electrical connection	Cable gland M16 Screw terminals max.1.5mm 2
Output signal	■ DC 0 ... 10 V, load min. 1 kΩ ■ 4 ... 20 mA, load min. 20 Ω, max.500Ω ■ Modbus ®
Material
Case	Plastic (ABS)
Cover	Polycarbonate
Sensor sleeve	Plastic (ABS)
Mounting flange	LLPDP
Permissible temperatures
Operating	0 …50°C[32 …122 °F] (at sensor)
Ambient	-20 …+70 °C [-4 …+158 °F]
Relative humidity	0 ... 95 %, non-condensing
Ingress protection per IEC/EN 60529	IP54
Weight	150 g
Mounting	By means of adjustable mounting flange

Modbus ® communication

Protocol	Modbus ® via serial interface
Transfer mode	RTU
Interface	RS-485
Byte format	(11 bits) in RTU mode Coding system: 8 bits binary Bits per byte: - 1 Start bit - 8 data bits, least significant bit is sent first - 1 bit for parity - 1 stop bit
Baud rate	9,600, 19,200, 38,400 - selectable in the configuration
Modbus ® addresses	1 …247 addresses selectable in the configuration menu

Logo	Description	Country
	EC declaration of conformity	European Union
	EMCdirective
	RoHS conformity
	WEEE directive
	EAC (option) Import certificate	Eurasian Economic Community
	KazInMetr (option) Metrology, measurement technology	Kazakhstan
-	MTSCHS (option) Permission for commissioning	Kazakhstan
	Uzstandard (option) Metrology, measurement technology	Uzbekistan