CO2, Temperature and Humidity Transmitter : AVC-310 & AVC 311 Series AECL

Use NDIR technology for CO2 measurement (0-2,000 ppm, extendable to 9,999 ppm), with the AVC-311 additionally integrating temperature and humidity sensors, supporting analog outputs, RS485 Modbus RTU, and SPDT outputs for fan control or alarms.

Application

Commercial building / office / meeting room.
Classroom.
Train station.
Shopping Mall.
Warehouse.
Museum.
Factory.
Library.
Green House.
Laboratory.
Mushroom Farm.
Wine Cellar.
Brewery.
Plant factory.
Indoor places where would be required to detect CO2 concentration.

AVC-310 & AVC-311_Catalog AVC-311-RS485-Modbus-RTU_Manual AVC-310-RS485-Modbus-RTU_Manual AVC-310-RS485-and-2-10V_Manual AVC-310-CO2-4-20mA_Manual AVC-310-0-20mA-4-20mA-0-10V-2-10V_Manual AVC-310-0-10V_Manual

(+84) 903 999 357

AVC-310 and AVC-311 Series are advanced CO2 sensors utilizing non-dispersive infrared (NDIR) technology for accurate and stable CO2 measurements. The AVC-311 also includes temperature and humidity sensing capabilities, enhancing overall air quality monitoring. Both models support analog outputs, RS485 Modbus RTU interfaces, and SPDT dry contact outputs, making them suitable for applications in HVAC and BMS systems.

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Specification

Model:	AVC-310 CO2 Transmitter	AVC-311 CO2, Temperature & Humidity Transmitter
Coverage area	100m2
Alarm output	Relay output N.O,N.C ( 2A / 30V DC ; 0.5A / 125V AC)
Pressure dependence	CO2：1.6% reading/kP
Operating conditions	Temperature：-10 ~ 50℃ Humidity：0 ~ 95%RH (non-condensing)
Storage temperature	-20 ~ 70℃
Warm-up time	≤ 1 min. (at full specs ≤ 15 minutes)
Power supply	DC 12 ~ 36V AC 24V (50/60Hz)
Sampling interval	CO2 sampling interval：1 sec.
Power consumption	0~20mA, 4~20mA, 0~10V, 2~10V, RS485：1.6W (Max.) RS485/LoRa：2.4W (Max.)
Installation	Wall-mount , Duct-mount
Case material	Fireproof ABS
Protection	Wall-mount：IP30 (No protection from liquids)； Duct-mount：IP65
Certifications	CE and FCC

Model:	AVC-310 CO2 Transmitter	AVC-311 CO2, Temperature & Humidity Transmitter
Sensing element	CO2： Gold-plated infrared (NDIR) wave-guide technology with Automatic Baseline Correction (ABC) and passive gas diffusion (no moving parts)	CO2: Gold-plated infrared (NDIR) wave-guide technology with Automatic Baseline Correction (ABC) and passive gas diffusion (no moving parts) Temperature & humidity：CMOS sensor
Response time	CO2： < 10 sec. @ 30 cc/min. flow rate < 3 min. diffusion time	CO2: < 10 sec. @ 30 cc/min. flow rate < 3 min. diffusion time Temperature：min. 3 sec.； max. 30 sec. at τ63% Humidity：< 8 sec. at τ63%
Accuracy (at 25℃)	CO2： 0~2000ppm (± 30ppm ±3% of reading), 2001~9999ppm (± 70ppm ±3% of reading)	CO2: 0~2000ppm(± 30ppm ±3% of reading), 2001~9999ppm(± 70ppm ±3% of reading) Temperature：±0.3℃ Humidity： ±2%RH
Repeatability	CO2：± 20 ppm+(±reading *1%)	CO2：± 20 ppm+(±reading 1%) Temperature：±0.1℃ Humidity*：±0.1%RH
Zero Drif	CO2： <±10ppm/yr. with Automatic Baseline Correction (ABC)	CO2： <±10 ppm/yr. with Automatic Baseline Correction (ABC) Temperature：< 0.04℃/yr. Humidity：< 0.5 %RH/yr
Measurement range	CO2： 0 ~ 2,000 ppm (Standard) 0 ~ 9999 ppm (High concentration)	CO2: 0 ~ 2,000 ppm (Standard)； 0 ~ 9999 ppm (High concentration) Temperature：-10 ~ 50℃； display range：-9.99 ~ 50.00℃ Humidity：0 ~ 100%RH； display range：0 ~ 99.9%RH
Signal output	DC 0~20mA / 4~20mA / DC 0~10V / 2~10V RS485 (Modbus RTU) RS485/LoRa (Peer to Peer), radio frequency band: 862 ~ 932 MHz	RS485 (Modbus RTU) RS485/LoRa (Peer to Peer), radio frequency band: 862 ~ 932 MHz

Note:

For general indoor air quality monitoring applications, the accuracy can be achieved after three-week continuous measurement, because of the ABC function. However, in some industrial applications, maintenance or calibration may be required.
The accuracy is determined under temperature at 25℃ and barometric pressure at 101.3 kPa, with comparison to the calibrated gas, of which the uncertainty (±1%) is considered.
The AVC-31x series is for general indoor use. For any special application, such as industrial or agriculture, please contact us.
The frequency channels will be differed by country and this frequency can be configured accordingly from 862 to 932Hz.
The coverage area should be considered individually to account for the particular layout and any varying or enclosed spaces. It is recommended to install at least one device in each room.
The installation height of wall-mounted type is recommended to be between 1 to 2 meters above the ground.

Feature

Measurement: CO2,Temperature, Humidity
Measurement principle: CO2: Gold-plated infrared (NDIR) wave-guide / Temperature & Humidity: CMOSens technology
Protection: IP30 (Wall-mount) / IP65 (Duct-mount)
Optional bright LCD display.
CE & FCC Certifications.
Maintenance-free for normal indoor applications.