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Low Cost HVAC Carbon Dioxide Sensor NDIR CO2 Sensor - MisIR

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• Low Power 20mW
• Measurement ranges from 0 to 1%
• Low noise measurement (<10ppm)
• 3.3V to 5V supply.
• Digital (UART)and Voltage Output Options
• Automatic calibration
• Operating Conditions: 0°C to 50°C; 0 to 95%RH non-condensing
• Accuracy: ±50 ppm +/- 3% of reading

Model Number: MisIR
Data Sheet:

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Product Specification

MisIR Carbon Dioxide Sensor NDIR CO2 Sensor Summary
NDIR CO2 Sensor MisIR is a low power (20mW), high performance CO2 sensor. Based on GSS patented solid state IR sensor technology and innovative optical designs, MISIR is configured to meet the requirements of the HVAC and Demand Led Ventilation markets.

MisIR Carbon Dioxide Sensor NDIR CO2 Sensor Characteristic

• Low Power 20mW
• Measurement ranges from 0 to 1%
• Low noise measurement (<10ppm)
• 3.3V to 5V supply.
• Digital (UART)and Voltage Output Options
• Automatic calibration

MisIR Carbon Dioxide Sensor NDIR CO2 Sensor Specification

General Performance
Warm-up Time	< 20 seconds
Operating Conditions	0°C to 50°C 0 to 95% RH, non-condensing
Recommended Storage	-30°C to +70°C
CO2 Measurement
Sensing Method	Non-dispersive infrared (NDIR) absorption Patented Gold-plated optics, GSS Solid-state source and detector
Sample Method	Diffusion
Measurement Range	0-2000ppm, 0-5000ppm, 0-1%
Accuracy	±50 ppm +/- 3% of reading
Non Linearity	< 1% of FS
Calibration	Automatic Calibration
Pressure Dependence	0.13% of reading per mm Hg in normal atmospheric conditions
Operating Pressure Range	950 mbar to 1100 bar
Response Time	2 minutes
Electrical/ Mechanical
Power Input	3.25 to 5.25V. (3.3V recommended). Peak Current 150mA3. Average Current 6mA3.
Power Consumption	20 mW

Low Cost HVAC Carbon Dioxide Sensor NDIR CO2 Sensor MisIRDimensions and Wiring Connections

The total height is 15mm at the highest point.

Pin	Description	Comment
PWR	Vsupply	3V3 to 5.25V
GND	0V	Only one GND pin should be connected.
Rx	Sensor receive line (UART)	5V Tolerant
Tx	Sensor transmit line (UART)	Voh = Vsupply
Vout	Voltage Output	Vout proportional to CO2 concentration. Full scale = Vsupply