Control panel with integrated room sensor

Name: Control panel with integrated room sensor
Brand: WIKA

Control panel with integrated room sensor for measurement of temperature, CO2, and relative humidity in room air and ventilation systems.

Range

0…50 °C

Output

0/2...10 V · 4...20 mA

Accuracy

< 0.5 °C

Protection

IP20

CERoHSWEEE

Price

On request

Depends on configuration

Request a quote

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Description

The model A2G-200 control panel with integrated room sensor was developed specifically for requirements in the ventilation and air-conditioning industry. Different versions measure the key parameters of relative humidity, room air temperature and carbon dioxide (CO 2 ).

The large touch LC display makes the operation and readability easy and clear. The integrated switching output enables a direct control command to higher-level systems or can be used for the direct switching on of a ventilation/ air-conditioning unit or fan. For this, the switch relay can be configured with all three parameters (relative humidity, ambient air temperature and CO 2 ).

Fig. top: with display Fig. bottom: without display

The measuring results are transmitted with an analogue output signal (0 ... 10 V or 4 ... 20 mA) or digitally via Modbus  output.

To prevent incorrect operation or manipulation, the LC display can be locked via setting a jumper on the PCB and then only has the function of a display and measuring instrument.

Special features

Electrical output signal, DC 0 … 10 V, 4 … 20 mA or Modbus ®
Touchscreen
Integrated switching output

Identification

Model	A2G-200
Product family	A2G
Subcategory	Room sensor with display and switching output

Measuring range

Temperature ranges

+0…+50 °C

Accuracy

Accuracy class

< 0.5 °C

Electrical characteristics

Output signal	0/2...10 V · 4...20 mA · Modbus · Modbus®
Power supply	AC/DC 24 V ±10 %
Electrical connection	5 screw terminals (24 V, GND, CO2, rH, T), cable gland M20, max. 1.5 mm²

Operating environment

Ambient temperature	−20…+70 °C
IP rating	IP20
Weight	0.15 kg

Certifications and approvals

Certifications

CERoHSWEEE

Additional details

Sensor type	Pt1000
Thermowell	No
Datasheet languages	EN

Tables from datasheet

Control panel with integrated room sensor, model A2G-200

	Parameter
	CO 2	Temperature	Relative humidity
Version	■ With LC display ■ Without LC display ■ With LC display and switching output
Measuring element	Non-dispersive infrared (NDIR)	Pt1000	Capacitive thermosetting polymer sensor element
Measuring range	400 …2,000 ppm	0 …50°C[32 …122 °F]	0 ...90%
Accuracy	±40 ppm + 2 %of reading value	< 0.5 °C [0.9 °F]	max.±4%
Units	ppm	5 °C	±4 %r.h.
Output signal	■ 0/2 ... 10 V, R >1 kΩ ■ 4 ... 20 mA, R <500Ω ■ Modbus ®
Electrical connection	5 screw terminals (24 V, GND,CO 2 , rH, T) Cable gland M20 Max.1.5mm 2
Supply voltage U B / Current consumption	AC/DC 24 V, ±10% 90 mA, +10 mAfor each voltage output / +20 mAfor each current output
LC display	77.4 x 52.4 mm[3.0 x 2.1 in]
Case	Plastic (ABS)
Permissible temperatures
Ambient	-20 …+70 °C [-4 …158 °F]
Operating	0 …50°C[32 …122 °F]
Relative humidity	0 …95%,non-condensing
Ingress protection per IEC/EN 60529	IP20
Mounting	Via three screw holes (slotted screws) with Ø3.8 mm[0.2 in]
Weight	150 g

Modbus ® communication

Protocol	RTU mode, RS 485 An additional analogue output for a selected measured value 0 ... 10 V, 2 …10V, R > 1 kΩ 4 …20mA, R < 500Ω
Transmission mode	RTU
Interface	RS-485
Switching output	SPDT relay, 250 …30V, 6 A 3 screw terminals (NC, COM, NO)
Power supply U B	AC 24V or DC 24V ±10%
Modbus ® addresses	1 …247 addresses selectable in the configuration menu

Description	Country
EC declaration of conformity	European Union
EMCdirective
Low voltage directive
RoHS conformity
WEEE directive