An Asahi Kasei Group Company.
©2022 Senseair AB. All rights reserved.
Document: PSH0102 Rev: 9
Standard specication
Measured gas Carbon dioxide (CO
2
)
Operating Principle Non-dispersive infrared
(NDIR)
Measurement range CO
2
400 – 2000 ppm
Accuracy CO
2
±70 ppm ±3% of reading
1, 2
Maintenance No maintenance required
Life Expectancy >15 years
Power supply 4.5 – 5.25 V DC
Operation temperature range 0–50 °C
Communication UART (Modbus)
Dimensions 33.9 x 19.8 x 8.7 mm
Energy consumption 300 mA peak
30 mA average
Response time 2 minutes by 90%
Senseair S8
Residential
A very small, versatile and
mass-producible CO
2
transmitter module
More than 25 years experience of research and
development within the eld of infrared gas sensing has
brought us our smallest NDIR CO
2
sensor. The sensor
has excellent performance such as high accuracy and
low power consumption.
Senseair S8 Residential is designed for high volume
production with full traceability by sensor serial number
on all manufacturing processes and key components.
Every sensor is individually calibrated and is provided
with UART digital interface. The sensor is maintenance-
free and has an estimated life time of more than 15 years.
Senseair S8 Residential is a module that is designed for
simple integration into products. Senseair S8 Residential
can be used in a wide range of applications such as
ventilation control to improve energy savings and to
assure a good indoor climate. Other elds of use are
personal safety and measurements to increase process
yield and to increase economic value in bio-related
processes.
Key benets
• Miniature size
• Individually calibrated
• Maintenance-free
• Long term stability
• Low power consumption
Note 1: In normal IAQ applications. Accuracy is dened after minimum three (3) ABC
periods of continuous operation with ABC on.
Note 2: Accuracy is specied over operating temperature range. Specication is referenced
to certied calibration mixtures. Uncertainty of calibration gas mixtures (±1%
currently) is to be added to the specied accuracy for absolute measurements.
An Asahi Kasei Group Company.
©2022 Senseair AB. All rights reserved.
Document: PSH0102 Rev: 9
Senseair S8 Residential Technical Specication
General Sensor Performance:
Required storage/operation environment Non-corrosive and non-condensing
Sensor lifetime expectancy >15 years
Service interval and maintenance Maintenance-free for normal indoor applications with Senseair
1
Self-diagnostics A full system test is executed automatically every time the power is turned ON
Operative environment required for keeping calibrated and specied accuracy in gas measurement:
Operative temperature range 0 – 50 °C
Operative relative humidity range 0 – 85% RH, non-condensing
1
Electrical Properties:
Power supply 4.5 – 5.25 V unprotected against surges and reverse connection
Power consumption 300 mA peak, 30 mA average
Mechanical Properties:
Electrical Connections DVCC, G+ and G0
Pin headers Optional
2
Dimensions 33.9 x 19.8 x 8.7 mm (Max. Length x Width x Height)
CO
2
Measurement:
Operating principle Non-dispersive infrared (NDIR)
Measurement Range 400 – 2000 ppm. Up to 10000 ppm extended range
3
Accuracy ±70 ppm ±3% of reading
4, 5
Measurement interval 2 seconds
Note 1: When using ABC (Automatic Baseline Correction) algorithm of Senseair.
Note 2: Optional
Note 3: Sensor is designed to measure in the range 400 to 2000ppm. Exposure to con
centrations below 400ppm may result in incorrect operation of ABC algorithm
and shall be avoided for model with ABC on.
Note 4: In normal IAQ applications. Accuracy is dened after minimum three (3) weeks
of continuous operation with ABC on. Some industrial applications do require
maintenance. Please, contact Senseair for further information!
Note 5: Accuracy is specied over operating temperature range. Specication is refer
enced to certied calibration mixtures. Uncertainty of calibration gas mixtures
(±1% currently) is to be added to the specied accuracy for absolute measurements.