OEM CO2 Content Sensor with UART, Modbus Protocol — S8 Residential
Спецификация S8 Residential
Available on request
Delivery across Russia
Order phone: +7(800)777-18-50
Description
SenseAir® S8 is a miniature carbon dioxide concentration sensor. The device can be used to monitor ventilation status or trigger an alarm. The sensor can be integrated into various signaling devices where CO2 level monitoring is required, for example, for leak detection.
- Specifications
- Contact assignment
- Applications
| Specifications | |
|
Measured gas |
CO2 |
|
Operating principle |
Non-dispersive infrared (NDIR) |
|
Measurement range |
from 400 to 2000 ppm1. Extended range up to 10000ppm2 |
|
Measurement interval |
2 seconds |
|
Accuracy |
±70 ppm ±3% of measured value3, 4 |
|
Pressure dependence |
With deviation from atmospheric pressure, deviation +1.6% of measured value per 1 kPa |
|
Response time |
2 minutes to 90% |
|
Temperature compensation range |
From 0 to +50°C |
|
Operating humidity |
From 0 to 85% relative humidity (non-condensing) |
|
Storage / operating temperature |
From -40 to +70°C |
|
Dimensions (mm) |
33.5 x 20 x 8.5 (maximum dimensions) |
|
Weight |
< 8 grams |
|
Power supply |
From 4.5V to 5.25V, not protected against surges and polarity reversal |
|
Power consumption |
Peak – 300 mA, average – 30 mA |
|
Service life |
15+ years |
|
Standards compliance |
Emission: EN 61000-6-3:2007, EN 61000-6-4:2007 Immunity: EN 61000-6-1:2007 RoHS directive 2011/65/EU |
|
Data transmission |
UART, Modbus protocol5. Contact for direct connection to board with built-in RS485 receiver |
|
Signal output, open collector |
1000/800 ppm – normal state, max 100 mA. Transistor is open at high CO2 level, OR low power, OR sensor fault |
|
PWM output, 1 kHz |
Duty cycle from 0 to 100% for 0…2000 ppm 3.3V push-pull CMOS output, unprotected |
|
Maintenance |
Under standard conditions with ABC function enabled, no maintenance required |
Note 1: The sensor is designed to measure in the range from 400 to 2000 ppm with the specified accuracy. Operation in an environment with concentration below 400 ppm may cause incorrect ABC algorithm operation. Such situations should be avoided when ABC algorithm is enabled.
Note 2: The sensor transmits data via UART protocol in extended range, however accuracy will be lower than specified.
Note 3: For standard applications. Accuracy is determined after at least 3 weeks of continuous operation. Some industrial applications require maintenance. For more detailed information contact SenseAir!
Note 4: Accuracy is specified for the operating temperature range. Certified calibration gas mixtures are used for calculation. Calibration gas deviation (±2%) is included in the specified accuracy.
Note 5: See Modbus specification in the file SenseAir_R_S8 rev_P11_1_00.doc
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