This USB barometer provides high-resolution measurement of APPLICATIONS ◌ Meteorological measurements atmospheric pressure (1 kPa to 120 kPa) and altitude. Thanks to the use of a 24-bit precision ADC, very small variations in air pressure can be detected and transmitted to a computer via USB. When used to calculate altitude from atmospheric pressure, variations of less than 10 cm can be perceived. This unit is designed as a compact USB-key form factor stick allowing instant integration even in most constraint spaces. INSTALLATION TIME Less than 10 minutes UNIQUE SERIAL NUMBER Each unit is assigned a unique serial number allowing for traceability and certification FREE DAQ SOFTWARE Real-time data visualization and logging DATA INTEGRATION Command-line tools for direct data access and integration OPTIONS ○ Virtual COM Port (VCP) communication protocol ○ 3-point user calibration mechanism ALSO AVAILABLE Traceability certificates SPECIFICATIONS Parameter SPECIFICATIONS Value Atmospheric pressure Operating temperature – -40 to 70 range Operating pressure range For full accuracy 45 to 110 Extended pressure range Linear range of ADC 1 to 120 Altitude resolution[4] – ≈10 ADC resolution – 24 Response time – 0.5 Factory calibrated Individually[2] Yes Filter – 2nd order Noise – ±0.0012 At 25°C Accuracy ±0.15 70 to 110 kPa 0 to 50°C Accuracy ±0.2 45 to 110 kPa -20 to 85°C Accuracy ±0.35 45 to110 kPa -40 to 85°C Accuracy ±0.6 45 to 110 kPa Internal temperature Range – -40 to 70 Resolution Typ. 0.01 Accuracy Typ. 0.8 Accuracy vs. Typ., at 25°C +3 external temperature Current consumption Powered through a USB port At 5V Mechanical Dimensions See drawing below – Colour – Black Weight – 6 Housing Temperature operating – -40[1] to 85 range Humidity operating range[3] Non-condensing 10 to 90 Material – ABS IP rating – 50[3] Form factor – USB-key Miscellaneous ADC resolution – 24 Long-term stability Yes – Yes Temperature compensated By the manufacturer Yes Lifetime – 5 [1] [2] Dracal Technologies Inc. All Rights Reserved Only if the sensor is not moved while the temperature is below 0°C. Each sensor is individually conditioned by the manufacturer of the semi-conductor sensor chips, in the best stable conditions and their correction coefficients are recorded in each of them. If water condensation or splashing is possible, it is recommended to install the probe pointing down to reduce the risk of water build-up in the sensor. If water splashing is possible, protect the sensor and the cable converter using extra precautions. Extra housing may be required dep

*Dracal Technologies BAR20 Series uses the 2nd order filter *Dracal Technologies BAR20 Series uses the 2nd order filter AVAILABLE CHANNEL(S) PRODUCT DIMENSIONS As displayed in our logging software CHANNEL ID* MS5611 Pressure MS5611 Temperature Altitude Atmospheric Pressure Temperature Altitude REAL REAL VIRTUAL * Channel Id as it appears in QTenki. Virtual channel Id differ in QTenki and usbtenkiget. CAUTION: Keep in mind that electromagnetic interferences (EMI) may adversely reduce the precision of the sensor. Avoid using this unit close to EMI sources such as motor, transformers, high voltage...