| ABC Logic |
Automatic Background Calibration – The algorithm that uses ambient air concentrations to adjust the sensor and compensate sensor long-term drift.
Adjustment cycle period is 12 – 192 hours of operation in active mode. Practical adjustment cycle depends on operating conditions.
|
| Measurement Range |
Air Quality Control: 400 – 5,000 ppm CO2
Safety Alarm for Air Quality Control and CO2: 400 – 40,000 ppm CO2 |
| Output Range |
0 – 65,000 ppm CO2 |
| Measurement Period |
Active Mode: 5 seconds
Low Power Mode: 5 minutes
Sleep Mode: 12 hours
Timing of these modes can be configured per customer requirements. |
| Resolution and Repeatability |
Internal Sensor Resolution: 1 ppm
Repeatability: 30 ppm at 1000 ppm (Typical) |
| Accuracy in Active Mode |
Range: 400 ppm to 5,000 ppm
±200 ppm or 10% of the reading, whichever is greater @ 0 to 50°C
Range: 5,000 ppm to 40,000 ppm (4%)
10% of the reading @ 0 to 50°C |
| Temperature Dependence |
Additional 0.5% of reading per °C or 5 PPM/C, whichever is greater outside the range 0 to 50°C |
| Pressure Dependence |
0.135% of the reading per mm Hg |
| Response Time (90% of Step Change) |
Active Mode: <40 seconds, dependent on test regime (Typical) |
| Warm-Up Time |
First measurements in:
< 5 sec after power-up
< 2 minutes maximum accuracy in Active Mode |
| Total Lifetime |
130,000 hours, limited by microcontroller flash retention specification |
| Operational Lifetime |
In Active Mode: 45,000 hours |
| Relative Humidity |
0-95% non-condensing |
*Please see product datasheet for more details and specifications.
