BAR20
USB precision barometer
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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 Ã 120 kPa (10 Ã 1200 mbar) | |
| Accuracy (at 25°C): | ±0.15 kPa (1.5 mbar) | |
| Resolution: | 0.0065 kPa (0.065 mbar) |
- User-accessible internal temperature reading (for calibration purposes)
- RoHS3 and CE compliant
- 3 years warranty
PRODUCT OPTIONS
- 3-point user calibration mechanism (CAL option)
- COM communication (VCP option)
- Traceable to the CNRC (NIST) certificates
FREE DATA LOGGING AND MONITORING SOFTWARE
Learn more and download DracalView:
- Get up-and-running in less than 3 minutes
- Operates under Windows, Mac OS X and Linux
- Real-time on-screen graphing and logging
- Configurable log file format
- Log interval down to 0.5 second
- Configurable units (°C, °F, K…)
- Simultaneous use of unlimited Dracal sensors supported
- Simple user-calibration (products with the CAL option)
- Connectivity with SensGate Wi-Fi/Ethernet gateway
EASY TO INTEGRATE IN YOUR OWN APPLICATION
- One portal page to easily get started
- Easily switch between USB CLI and Wi-Fi/Ethernet CLI
- Code samples available for many programming languages
- Usable with LabView (Guide here)
All command-line tools (CLI) are packaged with DracalView
Description
BAR20: USB sensor for accurate measurement of atmospheric pressure and altitude.
The BAR20, a member of the BAR series, is a digital barometer operating within a range of 1 kPa to 120 kPa with high precision. Its unique USB key-like design allows seamless integration into various systems.
Like all Dracal measuring instruments, the BAR20 is compatible with free software tools, making it an essential component of a DAQ solution. For those looking to integrate the BAR20 into their system, two options are available: command-line tools and VCP mode. If you prefer a graphical interface, DracalView is the appropriate choice.
Easy to use in your applications
- Virtual COM option (VCP)Â
- dracal-usb-get: command-line data integration tool
- dracal-sensgate-get: command-line tool for wireless access to sensors connected to a SensGate
- RVCP: REST API for wireless access to VCP instruments connected to a SensGate
Multiple integration and code examples, including Python, C, C++, Java, Node.js, C#, Grafana and LabVIEW.
Free data monitoring and calibration software
Be instantly operational with DracalView: our free data visualization, logging and calibration software
- Works under Windows (Win7/8/10/11 64&32-bit), Mac OS X and Linux
- Simultaneous visualization and logging of an unlimited number of sensors
- Automatic synchronization with our Wi-Fi gateway
- Easy calibration mechanism open to the end-user
Application examples
- Altimeter
- Navigation system
What is included
- One (1) BAR20 unit
- Quick installation guide
- Data acquisition solution for DAQ system
Available options
Specifications
Atmospheric pressure
- Operating range: 45 to 110 kPa
- Accuracy at 25°C: ±0.15 kPa
- Extended pressure range: 1 to 120 kPa
- Overpressure: 600 kPa
- Resolution: 0.0065 kPa
- Internal factory-calibrated coefficients
- ADC resolution: 24 bits
- Altitude resolution: approx. 10 cm
- Long-term drift: ±0.1 kPa/year
- Sensor IC: MS5611
Internal temperature
- Operating range: -40°C to 70°C
- Accuracy: <0.8°C
- Difference int. vs ext. at 25°C (typical): +3°C
- Resolution (typical): ±0.01°C
Miscellaneous
- Operating temperature range: -20°C to 70°C
- Powered through USB
- Communication: USB 2.0
- Enclosure: ABS Plastic, USB-key form factor
- Weight: 6 g
- IP rating: IP60
- Overall dimension: H 2.295″ (58 mm) X W 0.759″ (19 mm) X D 0.425″ (11 mm)
- RoHS3 and CE compliant.
Available channels
(As displayed in our logging software DracalView)
| Channel Id* | Description | Type | Nature |
|---|---|---|---|
| 00 | MS5611 Pressure | Pressure | Real |
| 01 | MS5611 Temperature | Temperature | Real |
| 02 | Altitude | Height | Virtual |
Dimensions
Units: Inch [mm]
Virtual COM port communication protocol (option)
This product is available with the option of communication via virtual COM port protocol. Products with this option can be freely converted between USB and VCP communication modes. For more information about this option, consult the documentation of the VCP option.
Of note, for Windows 7 users, here is the installation procedure.
Here is what the invocation of the command INFO returns for this product:
I,Product ID,Serial Number,Message,MS5611 Pressure,Pa,MS5611 Temperature,C,*D77Eas well as an example of what this product transmits:
D,VCP-BAR20,E14804,,103195,Pa,23.75,C,*483C
D,VCP-BAR20,E14804,,103197,Pa,23.78,C,*FB7C
D,VCP-BAR20,E14804,,103193,Pa,23.81,C,*685F
D,VCP-BAR20,E14804,,103194,Pa,23.85,C,*68A6
D,VCP-BAR20,E14804,,103196,Pa,23.88,C,*DBE63-point user calibration mechanism (option)
This product can be equiped with a 3-point user calibration mechanism. Devices equiped with this feature are eligible for calibration and certification in an accredited ISO/IEC 17025 laboratory. You will find here more information about NIST traceable certificates.
Free data logging software
- Real-time on-screen graphing and logging
- Supported by our DracalView data logger software and tools
- Operates under Windows (Win7/8/10/11 64&32-bit), Mac OS X and Linux
- Configurable log file format with log interval down to 0.5 second
- Configurable units (°C, °F, K...)
- Simultaneous use of unlimited Dracal sensors supported
- Seamless connectivity with SensGate Wi-Fi/Ethernet gateway
- Command-line tool dracal-usb-get is also available (packaged with DracalView)
- Use it in your own application easily! We provide code samples for many programming languages
- Usable with LabView (Guide here)
- And much more! Visit our DracalView software WEB page for more information
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.
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.
