NRG #BP20 Barometric Pressure Sensor

Model Number : NRG #BP20

The NRG Systems #BP20 pressure sensor is a micro-machined absolute pressure sensor which provides a high-level voltage output signal that is proportional to absolute pressure.

The #BP20 pressure sensor includes built-in temperature compensation, linearization, and an output amplifier. Its low cost and rugged ABS enclosure make the BP-20 ideal for collecting absolute pressure data at remote sites.

Sensor type micromachined integrated circuit absolute pressure sensor
  • wind resource assessment
  • meteorological studies
  • environmental monitoring
Sensor range 15 kPa to 115 kPa (4.43 inches to 34.0 inches Hg)
Instrument compatibility NRG Symphonie equipped with a BP SCM + any iPack
Output signal
Signal type linear analog voltage
Transfer function Absolute Pressure in kPa = (Voltage x 21.79) + 10.55 typical
Accuracy +/- 1.5 kPa (15 mb) max. uncorrected offset (+/- 0.443 inches Hg)
Calibration calibration sheet included with each sensor specifies offset correction
Turn on time 15 ms
Power requirements
Supply voltage 7 V to 35 V DC
Supply current 15 mA max. (8 mA typical)
Mounting mounts directly to tower or inside steel shelter box with hose clamps (included)
Tools required 8mm (5/16 inch) nut driver or flat blade screwdriver
Operating temperature range
  • 10 C to 50 C at full accuracy
  • At cold temperatures, offset increases by 3 kPa (30 mb) worst case at -30 C.
Connections wire leads, 3 conductor shielded cable:

  • Red: sensor power
  • White: output signal
  • Black: sensor ground
  • Shield wire: to earth ground
Cable length
  • 1.5 m (5 feet)
  • cable diameter 4.8 mm (3/16 inches)
Weight 0.1 kg (0.2 pounds)
  • 57 mm (2.25 inches) diameter
  • 112 mm (4.4 inches) length (including cable bushing)
Cable 3 conductor 22 AWG, with overall foil shield and drain wire, chrome PVC jacket
Enclosure weatherproof black ABS

Have a question? Need help configuring and testing your NRG equipment? We're here to help. NRG Systems products come with five resources for technical support.

Product Documentation

Begin by reviewing the documentation we've prepared.

  • Read the manual: The answer to your question may be right there. Please help us to help you more effectively and read through your product's owner's manual first.
  • Application Notes or Reference Guide: Need more information about a specific product? Details about specific situations or settings can be found in the application notes.
  • Software Downloads: Just need to quickly check for a software update? This is the right place.
  • Check out the Knowledge Base: Find answers and solutions to common questions here. This is a constantly evolving database, so check it often for the latest and greatest information.

There's a good chance you're not the first person to have a specific question or issue. Check out our online Tech Forums where others like you go for answers. And if you feel you have something to offer, we welcome you to join in the discussion.

  • Search the Forums: Take a minute to search through our users forum. Often you'll find your question was answered before. If you don't find your answer, feel free to register and post your question.
  • Login to the Forums: Already a member of the forums? Welcome back!
  • Join the Forums: Ask questions, get answers and read suggestions from other customers on the NRG Tech Forums.

If you have checked the documentation, forums, and Knowledge Base and are still having problems with your equipment purchased within the past two years, you will need to contact NRG for a RMA return authorization number to return a defective product. This is the quickest and easiest way to get you back to doing what you are trying to do, measure the wind. Please see NRG Warranty for warranty details and instructions.

Repair Service

If you should need to return an out-of-warranty item for repair, please contact NRG in order to obtain an RMA number. Detailed instructions for returning an item to NRG can be found in the document Returning_Repairs_to_NRG.pdf.

Contact Technical Support

If you've explored all of the above resources and still have questions, we have a crack team of professionals waiting to answer your call or email. We ask that you be sure to use the tools above before contacting us, and we will do our best to assist you.