BAR20-N
Precision barometer with NMEA output
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Shipped within 3 business days
Volume discounts available for modular OEM integration projects. Contact sales@dracal.com for more information.
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| Operating range: | 1 to 120 kPa (10 to 1200 mbar) | |
| Accuracy (at 25°C): | ±0.15 kPa (1.5 mbar) |
- Communication: USB-connected Virtual COM port
- Sentence output formats: MDA and XDR NMEA
- RoHS3 and CE compliant
- 3 years warranty
Not supported by our integration and data acquisition software.
- It is supported by navigation software such as OpenCPN and Expedition.
- The simple ASCII output is compatible with most programming languages.
- The XDR sentence provides pressure in bars.
- The MDA sentence provides pressure in inches of mercury and bars.
If you need a barometer that offers communication via a virtual serial port (COM) but whose language is not NMEA, please consider the BAR20 with the VCP option.
Description
BAR20-N: High-precision USB atmospheric pressure sensor, ideal for easy integration and accurate measurements.
The BAR20-N, member of the BAR series, is a USB atmospheric pressure sensor designed to measure pressures ranging from 1 to 120 kPa with an accuracy of ±0.15 kPa at 25°C (1.5 mbar) and a fine resolution of 0.0065 kPa (0.065 mbar). Equipped with a high-resolution 24-bit ΔΣ analog-to-digital converter, it can detect very small fluctuations. Its compact USB key design makes it easy to integrate, even in confined spaces. The BAR20-N communicates via a virtual COM port USB and operates within a temperature range of -20°C to +70°C, offering temperature compensation to ensure stable accuracy under various environmental conditions. Its ABS plastic housing makes it both robust and portable.
Data logging
Note: The BAR20-N is not supported by our free data acquisition tools.
Application examples
- Navigation (air, sea, etc.)
What is included
- One (1) BAR20-N Unit
- Quick installation guide
Specifications
Atmospheric pressure
- Operating range: 1 to 120 kPa (10 to 1200 mbar)
- Accuracy: ±0.15 kPa at 25°C (1.5 mbar)
- Resolution: 0.0065 kPa (0.065 mbar)
- Temperature-compensated
Miscellaneous
- Communication: USB Virtual COM port
- Operating temperature: -20°C to +70°C
- Enclosure: ABS Plastic, USB-key form factor
- RoHS3 and CE compliant
Dimensions
Units: Inch [mm]
Data logging
Note 1: The BAR20-N is not supported by our free data acquisition tools.
Note 2: Microsoft Windows 7 does not support the virtual COM port and therefore does not recognize this product.
The USB-BAR20-N appears as a serial port (Virtual COM port) and outputs atmospheric pressure at 1-second intervals using MDA and XDR NMEA sentences.
Sample output:
Here is a sample of the product output:
$YXXDR,P,1.023890,B,USB-BAR20-N*1b
$YXMDA,30.235451,I,1.023890,,,,,,,,,,,,,,,,,*36
$YXXDR,P,1.023880,B,USB-BAR20-N*1a
$YXMDA,30.235155,I,1.023880,,,,,,,,,,,,,,,,,*36
$YXXDR,P,1.023870,B,USB-BAR20-N*15
$YXMDA,30.234859,I,1.023870,,,,,,,,,,,,,,,,,*3dAdditional information
- Works natively (no drivers to install) under Windows 10,11 and Linux (ttyACM)
- Supported by navigation software such as OpenCPN and Expedition[†]
- 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
For more information about NMEA sentences, we recommend NMEA Revealed.
Do you have STEP/CAD files of your instruments?
You can find them on each instrument page under the Datasheets tab if available.
Are your sensors battery-powered?
No, they are not. They are powered via the USB plug; therefore, they must be plugged in to transmit data.
Can I use DracalView with my BAR20N?
No. The BAR20N is not compatible with DracalView.
How do I request a quote?
We have created the easiest possible quote request system for you.
1. Create an account and log in.
2. Then do whatever you would do while shopping, then click on the shopping cart in the top right.
3. In your cart, click on “Switch to quote”, then at the bottom of the page “Proceed to quote”. You will not be asked for any payment information.
You will then receive a quote by email, which you can accept and pay within 30 days.
What are the advantages of choosing a calibratable instrument (-CAL option)?
The devices with the 3-point calibration mechanism have a longer lifetime as it is possible to compensate for the natural drift of the measurements. The cost/lifetime ratio is thus considerably reduced and, just as importantly, this choice is environmental friendly.
These devices can be easily calibrated and certified by external resources (including our ISO17025 certified partner laboratory) and allow you to synchronize your various devices between them.
What are the advantages of using your USB communicating devices over other technologies?
| 1. Connection security. | 6. Continuous power supply. |
| 2. Instant access to data. | 7. Low-power supply. |
| 3. Data confidentiality. | 8. Self-sufficiency. |
| 4. Data reliability. | 9. Technology persistence over time. |
| 5. Fast response time. | 10. Universal access. |
Can I use your measurement devices while maintaining my current software infrastructure?
Yes, you own your data. To integrate your data, you can either use our CLI (command line interface) for which we have plenty of code examples or for more advanced users, by choosing the VCP (Virtual COM Port) option when selecting your product.
How many devices can be simultaneously managed by your software tools?
Unlimited number of similar and different devices, provided your system supports the load.
What is your warranty policy?
Dracal Technologies guarantees the incomparable speed of use and the exceptional quality of its products, that they are made of new materials, assembled and tested in our factory in Canada, in processes that respect human rights and the environment. We guarantee the absolute absence of any form of programmed obsolescence, and that conversely, we deploy sustained efforts on both our electrical and mechanical designs to extend the life of our devices as long as possible so that the results of the efforts invested by our customers last over time but also, and just as importantly, to preserve our planet. We guarantee unlimited access to all updates of our free software tools. We offer a 2-year material warranty.
