Carte avec capteur de qualité de l'air et capteur d'environnement
- Ce capteur de qualité de l'air combo mesure la qualité atmosphérique en utilisant les capteurs CCS811 et BME280 très populaires. Il fournit une variété de données comme la pression atmosphérique, l'humidité, la température, des prévisions de TVOC (taux de composés organiques volatiles) et les niveaux d'oxyde métallique et d'équivalent dioxyde de carbone (équivalent CO2). La communication est numérique via une interface I2C.
| Référence | VMA342 |
|---|---|
| code EAN | 5410329701918 |
| Marque | VELLEMAN |
| Jusqu'à épuisement du stock | No |
The CCS811 is an exceedingly popular sensor, providing readings for equivalent CO2 (or eCO2) in parts per million (PPM) and total volatile organic compounds in the parts per billion (PPB). The CCS811 also has a feature that allows it to fine-tune its readings if it has access to the current humidity and temperature. Therefore, we added the BME280, which provides humidity, temperature, and barometric pressure. This allows the sensors to work together to give us more accurate readings than they'd be able to provide on their own.
Since the CCS811 heats up a bit, the PCB is precisely designed to not influence the readings of the BME280 sensor.
Features
- CCS811 and BME280 ICs
- eCO2 sensor
- TVOC sensor
- temperature sensor
- humidity sensor
- pressure sensor
- altitude sensor
Specifications
- operation voltage: 3.3 V
- eCO2 sensing: from 400 to 8,192 parts per million
- Total Volatile Organic Compound (TVOC): from 0 to 1,187 parts per billion
- temperature range: -40°C (-40°F) to 85°C (185°F)
- humidity range: 0-100% RH, =-3% from 20-80%
- pressure range: 30,000Pa to 110,000Pa, relative accuracy of 12Pa, absolute accuracy of 100Pa
- alltitude range: 0 to 9.2km (30,000 feet), relative accuracy of 1m (3.3 feet) at sea level, 2m (6.6 feet) at 9.2km (30,000 feet)
- length: 51 mm
- width: 30.4 mm
- height: 5.4 mm
- weight: 4.80 g
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The sensors can consume 13mA of current together. It takes 12mA to power the CCS811 while 1mA to power the BME280.
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The VMA342 needs a burn-in time of 48 hours and at least 20 minutes of logging before the eCO2 and TVOC values are stable. During the first 20 minutes, the temperature and humidity might also be different from your measurements due to these compensations.
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The values read with the VMA342 are for indicative purposes only. Values should be interpreted while considering the environmental situation. Keep your living space well ventilated.
* Malgré un système de stock très étendu, il est possible que le stock ne correspond pas au stock actuel. Si vous voulez vérifiez le stock, n'hésitez pas de nous contacter.
** * La photo affichée peut différer du produit réel.