Page 1/2
©2019 Senseair AB. All rights reserved.
Senseair S8 LP
Document: PSH1944 Rev: 12
Standard specication
Measured gas Carbon dioxide (CO
2
)
Operating Principle Non-dispersive infrared
(NDIR)
Measurement range CO
2
400–2000ppm
Accuracy CO
2
±40ppm ±3% of reading
1, 2
Maintenance No maintenance required
Life expectancy >15 years
Power supply 4.5–5.25VDC
Operation temperature range 0–50°C
Communication UART (Modbus)
Dimensions 33.9 x 19.8 x 8.7mm
with pin headers (optional) 33.9 x 19.8 x 9.3mm
Power consumption 300mA peak
18mA average
Response time 2 minutes by 90%
Senseair S8 LP
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
now brought us the smallest CO2 sensor, with NDIR-
technique, in the world – Senseair S8 LP. The new sensor
has excellent performance such as high accuracy and
low power consumption. Senseair S8 LP 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 LP is a module that is designed for simple
integration into products. Senseair S8 LP can be used
in a wide range of applications such as in 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.
Page 2/2
©2019 Senseair AB. All rights reserved.
Document: PSH1944 Rev: 12
Senseair S8 LP Technical Specication
General Sensor Performance:
Required storage/operation environment Non-corrosive and non-condensing
1
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
Operating environment required for keeping calibrated and specied accuracy in gas measurement:
Operating temperature range 0–50°C
Operating relative humidity range 0–85%RH, non-condensing
1
Electrical Properties:
Power supply 4.5–5.25V unprotected against surges and reverse connection
Power consumption 300mA peak, 18mA average
Mechanical Properties:
Electrical Connections DVCC, G+ and G0
Dimensions 33.9 x 19.8 x 8.7mm
With Pin headers (Optional) 33.9 x 19.8 x 9.3mm
CO
2
Measurement:
Operating principle Non-dispersive infrared (NDIR)
Measurement Range 400–2000ppm. Up to 10000ppm extended range
2
Accuracy ±40ppm ±3% of reading
3, 4
Measurement interval 4 seconds
Note 1: When using ABC (Automatic Baseline Correction) algorithm of Senseair.
Note 2: 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 3: In normal IAQ applications. Accuracy is dened after minimum three (3) ABC
periods of continuous operation with ABC on. Some industrial applications do require
maintenance. Please, contact Senseair for further information!
Note 4: 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.