Senseair S8 2% Miniature CO2 sensor module with NDIR technique Product Specification
●Target gas: CO2
●Operating principle: Non-dispersive infrared (NDIR)
●Measurement range:
■0.04-2% volume CO2(Note 1)
■0-3.2% volume CO2 extended range (Note 2)
●Measurement interval: 2 seconds
●Accuracy: ±70 ppm ±3% of reading(Notes 2 and 3)
●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): 33.9 x 19.8 x 8.7 mm(max dimensions)
●Weight: < 8 grams
●Power supply: 4.5-5.25 V unprotected against surges and reverse connection
●Power consumption: 300 mA peak, 30mA average
●Life expectancy: 15+ years in normal commercial environment
●Serial communication: UART, Modbus protocol(Notes 4)Direction control pin for direct connection to RS485 receiver integrated circuit.
●Alarm output, open collector: 8500/6500 ppm normally conducting max 100mA Transistor open at CO2 High,OR Power Low, OR at Sensor failure
●PWM output, 1 kHz:
■0-100% duty cycle for 0-20000 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 0-20000 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: In normal IAQ applications. Sensor requires to be exposed to fresh air at least every four weeks. Accuracy is defined after minimum two(2) ABC periods of continuous operation. However, some industrial applications do require maintenance.
●Note 3: Accuracy is specified over operating temperature range. 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 4: See specification TDE2067 {Modbus on 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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2022/4/28 |
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Rev 20 |
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PSP0108 |
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1.7 MB |
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