Carbon Dioxide Detectors/Controllers

CO₂ Sensor

Non-Dispersive Infrared Detector (NDIR)

Measurement Range

0~2,000ppm (default)

0~5,000ppm (preset)

Accuracy

±40ppm + 3% of reading @22°C(72°F)

Stability

<2% of full scale over the life of the sensor

Calibration

Self-calibration system

Response Time

<5 minutes for 90% step change at low duct speed

Non-linearity

<1% of full scale @22°C(72°F)

Duct Air Velocity

0~450m/min     

Pressure Dependence

0.135% of reading per mm Hg

Warm up time

2 hours (first time)

2 minutes (operation)

Split CO2 sensor

2 meter cable connection between the senor and the controller

Temperature & Humidity Sensor (optional)

Temperature

Relative Humidity

Sensing element:

Band-gap-senor

Capacitive humidity sensor

Measuring range

-20°C~50°C

5 -100%RH

Accuracy

±0.4°C (25°C)

±3%RH (25°C, 40%-60%RH)

Display resolution

0.1°C

0.1%RH

Stability

±0.1°Cper year

±1%RH per year

General Data

Power supply

24VAC/24VDC

100VAC~240VAC

Consumption

1.8 W max. ; 1.0 W avg.

LCD display

Display CO₂ measurement

or CO₂ + temperature& humidity measurements

LCD backlit color-3 color

Green CO₂<1000ppm (optimal air quality)     default

Yellow CO₂>1000ppm (moderate air quality)   default

Red CO₂>1400ppm (poor air quality)        default

The color switch can be preset in parameters

Dry contact output (optional)

1xdry contact output for CO₂

3A rated switch contact

Modbus RS485 Interface (optional)

19200bps, 15KV antistatic protection.

Wireless module (optional)

ZigBee 2.4G short distance wireless communication

Operation conditions

-0°C~50°C(32~122°F); 0~95%RH, non condensing

Storage conditions

-20~70°C(-40~158°F)

Net weight

260g

IP class

IP30

Standard Approval

CE-Approval