PRECISION BAROMETER WITH NMEA OUTPUT This USB-connected barometer allows for precise measurement of atmospheric pressure (1 to 120 kPa). Thanks to the use of a high resolution ADC (24-bit), very small changes in atmospheric pressure can be sensed and sent to a computer over USB. The BAR20-N appears as a serial port (Virtual COM port) and outputs atmospheric pressure at 1-second intervals using MDA and XDR ◌ Research & development ◌ Engineering and R&D NMEA sentences. Designed as a compact USB-Key form factor for easy integration even in space-constrained applications. SPECIFICATIONS Parameter 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 This product isn’t supported by our free DAQ software DATA INTEGRATION Command-line tools for direct data access and integration *The BAR20-N is not supported by our free data acquisition tools. 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 Interval 1 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 to 110 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 Works natively (no drivers to install) under Windows 10 and Linux (ttyACM)[5]. Supported by navigation software such as OpenCPN and Expedition[tm] Simple ASCII output, interfaces easily with most programming languages. The XDR (transducer measurement) sentence provides pressure in Bars. The MDA (meteorological composite) sentence provides pressure in Inches of mercury and in Bars. 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 Communication USB, virtual COM port[5] ADC resolution – 24 Long-term stability Yes – Yes Temperature compensated By the manufacturer Yes Lifetime – 5 [1] [2] bits – – years 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 depending on the application. In a fully controlled environment. Microsoft Windows 7 does not support the virtual COM port and therefore does not recognize this product. OpenCPN, Expedition and other trademarks mentioned on this page are the property of their respective owner(s). Neither Dracal Technologies inc., nor any software programs or other goods or services offered by Dracal Technologies inc., are affiliated with, endorsed by, or sponsored by the owners of those trademarks. [TM]

*Dracal Technologies BAR20 Series uses the 2nd order filter *Dracal Technologies BAR20 Series uses the 2nd order filter PLEASE NOTE: The BAR20-N is not supported by our free data acquisition tools. PRODUCT DIMENSIONS Example of the product output: $YXXDR,P,1.012060,B,USB-BAR20-N*1e $YXMDA,29.886112,I,1.012060,,,,,,,,,,,,,,,,,*3b PLEASE NOTE: Microsoft Windows 7 does not support the virtual COM port and therefore does not recognize this product. Dimensions are in inches [mm] WARNING: Keep in mind that electromagnetic interferences (EMI) may adversely reduce the precision of the sensor. Avoid using...