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Monnit ALTA Wireless Carbon Dioxide Sensor uses an ultra low-power, high-performance CO2 sensor to measure the amount of carbon dioxide in ambient air.
- Measures 0 to 10000 ppm CO2
- Accurate to +/- 45 ppm + 3% of reading
- Sensor produces instantaneous CO2 readings and 8 hour time weighted average(TWA) readings
Principle of OperationThe ALTA Wireless Carbon Dioxide Sensor measures the amount of CO2 in the ambient air surrounding the element. It is programmed to take readings at a set interval to accurately calculate CO2 levels, then send the time-stamped data to the iMonnit Online Sensor Monitoring and Notification System at user-specified time intervals (sensor heartbeat). The CO2 data can be reviewed and exported as a data sheet or graph and notifications can be set up through the online system to alert the user when defined thresholds have been met or exceeded.Example Interfacing
Features of Monnit ALTA Sensors
*Actual range may vary depending on environment. **Battery life is determined by sensor reporting frequency and other variables. Other power options are also available.
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ALTA AA Wireless Carbon Dioxide CO2 SensorTechnical Specifications
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| Supply Voltage | 2.0-3.8 VDC (3.0-3.8 VDC using power supply) * |
| Current Consumption | 0.2 µA (sleep mode), 0.7 µA (RTC sleep), 570 µA (MCU idle), 2.5 mA (MCU active), 5.5 mA (radio RX mode), 22.6 mA (radio TX mode) |
| Operating temperature range (board circuitry and battery) | 0°C to 50°C (32°F to 122°F) standard range |
| Sensing Method | Non-dispersive infrared (NDIR) absorption Gold-plated optics Solid-state source and detector |
| Sample Method | Diffusion |
| Range | 0 to 10000 ppm CO2 |
| Accuracy | ± ((45 ppm + 3%) * (1 + .0013 * deltaP)) ** |
| Datalogging | Datalogs up to 3200 sensor messages |
| Wireless Range | 1,200+ ft non-line-of-sight |
| Security | Encrypt-RF ® (256-bit key exchange and AES-128 CTR) |
| Weight | 4.5 ounces |
| Certifications | 900 MHz product; FCC ID: ZTL-G2SC1 and IC: 9794A-G2SC1. 868 and 433 MHz product tested and found to comply with: EN 300 220-2 V3.1.1 (2017-02), EN 300 220-2 V3.1.1 (2017-02) and EN 60950 |
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*Hardware cannot withstand negative voltage. Please take care when connecting a power device. ** deltaP is in mbar and is the difference between atmospheric pressure at sea level (1013 mbar) and the pressure at the sensors altitude (Ex: 1013 mbar ? ambient pressure in mbar). *** For correct autocalibration, the sensor must experience fresh air CO2 levels (~400 ppm) for at least 4 hours per day. If the environment does not meet this criteria then disable the autocalibration feature |
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Monnit ALTA Wireless Carbon Dioxide Sensor uses an ultra low-power, high-performance CO2 sensor to measure the amount of carbon dioxide in ambient air.
- Measures 0 to 10000 ppm CO2
- Accurate to +/- 45 ppm + 3% of reading
- Sensor produces instantaneous CO2 readings and 8 hour time weighted average(TWA) readings
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