Indoor Air Quality Transmitter: AVC-M Series AECL

The transmitter features industrial-standard RS485 Modbus RTU signal output for reliable integration into HVAC and BMS systems.

Application

Commercial building / office / meeting room.
Train Station.
Library.
Classroom.
Museum.
Food warehouse.
Parking lot.
Training center.
Train station.
Shopping Mall.
Indoor places where would be required to measure the illumination.

AVC-M_Catalog AVC-M_Manual

+(84) 839 606 568

The AVC-M Indoor Air Quality Transmitter features high-quality sensors for measuring temperature, humidity, CO, CO2, PM2.5, PM10, TVOC, HCHO, oxygen, and NH3. With an RS485 Modbus RTU signal output, it is ideal for HVAC and BMS systems, offering a compact design for flexible integration. Recommended installation height is 1 to 2 meters above floor level.

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Specification

Parameters	Temperature, Humidity, CO2, CO, HCHO, TVOC, PM2.5, PM10, O2, O3, NH3, H2S, NO2, CL2
Signal output	RS485 or RS485 / LoRa (Peer to Peer) switchable, LoRa frequency band: 862 ~ 932 MHz(1)
Warm-up time	15 minutes
Operating environment	-10 ~ 50℃ (14~122℉) / 0 ~ 95%RH, non-condensing
Storage temperature	-10 ~ 50℃ (14~122℉)
Power supply	DC 12 ~ 36V, AC 24V (50/60Hz)
Power consumption	RS485: 3W (Max.); LoRa / RS485: 4.5W (Max.)
Certifications	CE, FCC
IP rating	IP30 (No protection from liquids)
Case material	Fireproof ABS
Weight	125g

	Temperature Measurement	Humidity Measurement
Sensing element	CMOS sensing element	CMOS sensing element
Measurement range	-10.00 ~ 50.00℃ (14~122℉)	0 ~ 99.99%RH
Accuracy	± 0.3℃ (typical)	± 3%RH (typical)
Resolution	0.01℃	0.01%RH
Repeatability	± 0.1℃	± 0.1%RH
Response time	5 ~ 30 sec. (τ63%, 25℃)	< 8 sec. (τ63%, 25℃)
Long-term drift	< 0.04℃ / year	< 0.5%RH / year
	CO Measurement	HCHO Measurement
Measurement principle	Electro-chemical	Electro-chemical
Measurement range	0 ~ 100 ppm	0 ~ 3.00 ppm
Accuracy (at 25℃)	± 5%	± 5%
Resolution	1 ppm	0.01 ppm
Repeatability	Reading ± 2%	< ± 0.05 ppm
Response time	τ90≦30 sec	τ90 < 120 sec. (HCHO: 1 ppm)
Drift	Zero: < ± 5 ppm; Span: ≦5% reading / year	Zero: < 0.05 ppm; Span: < 20% reading / year
	CO2 Measurement	VOC Measurement
Measurement principle	NDIR with automatic calibration	CMOS sensing element
Measurement range	0 ~ 9999 ppm	0 ~ 500 VOC Index points 0 ~ 500 ppb
Accuracy	0 ~ 2000 ppm (± 30 ppm ± 3% of reading), 2001~9999 ppm (± 70 ppm ± 3% of reading)	< ± 15 VOC Index points; < ± 20 ppb
Resolution	1ppm	1 VOC Index points; 1 ppb
Repeatability	± 20 ppm+ (± reading *1%)	< ± 5 VOC Index points; < ± 15 ppb
Response time	2 minutes by 90%	< 10 sec. (τ63%)
Maintenance	Maintenance-free for normal indoor applications
	PM2.5 Measurement	PM10 Measurement
Measurement principle	Laser distributing	Laser distributing
Measurement range	0 ~ 600 μg/m3	0 ~ 600 μg/m3
Accuracy	0 ~ 100 μg/m3 (± 10 μg/m3), 100 ~ 600 μg/m3 (± 10%)	0 ~ 100 μg/m3 (± 10 μg/m3), 100 ~ 600 μg/m3 (± 10%)
Resolution	1 μg/m3	1 μg/m3
Response time	≦10 sec.	≦10 sec.
Maintenance	Maintenance-free for normal indoor applications	Maintenance-free for normal indoor applications
	O2 Measurement	NH3 Measurement
Measurement principle	Electro-chemical	Electro-chemical
Measurement range	0 ~ 30%	0 ~ 50.0 ppm
Accuracy	Full scale ± 5%	± 5%
Resolution	0.01%	0.1 ppm
Repeatability	Reading ± 5%	± 10%
Response time	τ90≦15 sec.	τ90≦90 sec.
Drift	<2% / month	Zero: < ± 10 ppm / year; Span: < 2% reading / month
	CL2 Measurement	H2S Measurement
Measurement principle	Electro-chemical	Electro-chemical
Measurement range	0 ~ 5.00 ppm	0 ~ 50.0 ppm
Accuracy	± 5% for 0 ~ 5.00ppm	± 5% for 0 ~ 50.0ppm
Resolution	0.01 ppm	0.1 ppm
Repeatability	Reading ± 2%	Reading ± 2%
Response time	τ90≦30 sec	τ90≦60 sec
Drift	≦2% / month	Zero: < ± 0.1 ppm / year; Span: < 10% reading / year
	O3 Measurement	NO2 Measurement
Measurement principle	Electro-chemical	Electro-chemical
Measurement range	0 ~ 5.00 ppm	0 ~ 5.00 ppm
Accuracy	± 5% for 0 ~ 5.00ppm	± 5% for 0 ~ 5.00ppm
Resolution	0.01 ppm	0.1 ppm
Repeatability	Reading ± 2%	Reading ± 2%
Response time	τ90≦30 sec	τ90≦30 sec
Drift	≦10% / year	≦10% / year

Note:

In normal IAQ applications. Accuracy is defined after minimum 3 weeks of continuous operation with ABC. However, some industrial applications do require maintenance.
Note 2: Accuracy is specified at room temperature +25°C and at normal pressure 101.3 kPa. Specification is referenced to certified calibration mixtures. Uncertainty of calibration gas mixtures (±1% currently) is to be added to the specified accuracy for absolute measurements.
The frequency channels will be differed by country and this frequency can be configured accordingly from 862 to 932Hz.
It is recommended to perform calibration at least every 6 months. Meanwhile, for the device installed in the environment with extreme condition, quarterly calibration would be necessary. When sensor is aging (lifespan of sensor is usually 12 months), it might cause sensor drift.
VOC index points: The value 100 refers to the typical indoor gas composition over the past 24h. While values between 100 and 500 indicate a deterioration, values between 0 and 100 inform about improvement of the air quality.

Feature

Measurements: Temperature, Humidity, CO, CO2, PM2.5, PM10, TVOC, HCHO, Oxygen and NH3
Installation: Wall-mount
Protection: IP30
Optional bright LCD display.
CE & FCC Certifications.