Senseair S8 LP Miniature CO2 sensor module with NDIR technique Product Specification
●Target gas: CO2
●Operating principle: Non-dispersive infrared (NDIR)
●Measurement range: 400-2000 ppm(Note 1). 0 to 10000 ppm extended range (Note2)
●Measurement interval: 4 seconds
●Accuracy: ±40 ppm ±3% of reading(Notes 3 and 4)
●Pressure dependence: +1.6% reading per kPa deviation from normal pressure
●Response time: 2 minutes by 90%
●Operating temperature: 0-50℃
●Operating humidity: 0-85% RH non condensed
●Storage temperature: -40-70℃
●Dimensions Max(LxW x H) [mm]: 33.9 x 19.8 x 8.7
●Weight: < 8 grams
●Power supply: 4.5-5.25 V unprotected against surges and reverse connection
●Power consumption: 300 mA peak, <18mA average
●Life expectancy: 15+ years
●Serial communication: UART, Modbus protocol(Notes 5). Direction control pin for direct connection to RS485 receiver integrated circuit.
●Alarm output, open collector: 1000/800ppm Normal state is Alarm state open conducting max 100 mA. Transistor open at CO2 High, OR Power Low OR at Sensor failure
●PWM output, 1 kHz:
■0-100% duty cycle for 0-2000 ppm
■3.3 V push-pull CMOS output, unprotected
●Maintenance: Maintenance-free for normal indoor applications with Senseair ABC ON
●Note 1: Sensor is designed to measure in the range 400-2000 ppm with specified in the table accuracy. Exposure to concentrations below 400 ppm may result in incorrect operation of ABC algorithm and shall be avoided for model with ABC on.
●Note 2: Sensor provides readings via UART in the extended range but the accuracy is degraded compared to specification in the table one.
●Note 3: In normal IAQ applications.Accuracy is defined after minimum three (3) ABC periods of continuous operation with ABC. However some industrial applications do require maintenance. Contact Senseair for further information
●Note 4: Accuracy is specified at room temperature +25℃ and at normal pressure 101.3kPa. Specification is referenced to certified calibration mixtures.Uncertainty of calibration gas mixtures(+1% currently )is to be added to the specified accuracy for absolute measurements.
●Note 5: See specification TDE2067 Modbus on Senseair S8
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Datasheet |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2022/4/29 |
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Rev 15 |
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PSP0126 |
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1.7 MB |
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