This next-generation barometric pressure sensor offers significantly improved accuracy over its predecessor, the NRG BP20.
DETAILS
The NRG BP60 Barometric Pressure Sensor is well-suited for the barometric pressure measurement requirements of wind and solar energy studies, particularly as an input to air density, annual energy production calculations, and more reliable forecasts on operational solar and wind farms.
The BP60 introduces a new sensing element, dramatically improving the accuracy of barometric pressure measurements compared to the legacy BP20 sensor. The most significant enhancement is the introduction of native temperature-compensation, discussed in greater detail on the NRG blog.
Each BP60 unit undergoes a single-point check to confirm performance within the sensor’s specifications, the results of which are available in a factory verification certificate at no additional cost. A three-point calibration is also available.
*Please note: BP60C is the calibrated version of this sensor.
BENEFITS
- Improved sensor accuracy thanks to a new sensing element means lower measurement uncertainty
- Native temperature-compensation enables more reliable forecasts on operational solar and wind farms
OUR CUSTOMERS
“The BP60 sensor has been a game-changer for real-time forecasting operations at Avangrid Renewables. Our 24/7 forecast desk now receives accurate 10-minute barometric pressure data from our fleet of offsite meteorological stations. These data give the forecasting team valuable insights into pressure gradient fluctuations that often have a direct impact on short-term wind field and energy production trends, as well as providing ground truth for model verification.”David MorrisLead / Senior Meteorologist, Avangrid Renewables
SPECIFICATIONS PRINT SPECS
1.5m cable (#15584) | 1.5m cable – Calibrated (#15588) | |
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DESCRIPTION | ||
Sensor type | Analog barometric pressure sensor based on piezo resistive silicon membrane | Analog barometric pressure sensor based on piezo resistive silicon membrane |
Applications | Wind and solar resource assessmentWind and solar plant operationsMeteorological studiesEnvironmental monitoring | Wind and solar resource assessmentWind and solar plant operationsMeteorological studiesEnvironmental monitoring |
Sensor range | 500 hPa to 1100 hPa (14.765 to 32.483 inches Hg) | 500 hPa to 1100 hPa (14.765 to 32.483 inches Hg) |
Instrument compatibility | All NRG Data Loggers | All NRG Data Loggers |
Signal conditioning module | SymphoniePRO: P-SCM #9130, 0 to 5 V, SE Input, Pulsed 5V EXCSymphoniePLUS3: SCM #3153 110S Temperature Sensor (Do not use SCM #3151 BP20!) | SymphoniePRO: P-SCM #9130, 0 to 5 V, SE Input, Pulsed 5V EXCSymphoniePLUS3: SCM #3153 110S Temperature Sensor (Do not use SCM #3151 BP20!) |
OUTPUT SIGNAL | ||
Signal type | Linear analog voltage | Linear analog voltage |
Transfer function | Absolute Pressure in hPa = (Voltage x 244.192829) + 494.948781 typical Absolute Pressure in inches Hg = (Voltage x 7.211029) + 14.615867 typical Note: Transfer function above applies to 1.5-meter cable. For sensors with cable lengths longer than 1.5 meters, subtract 0.015949406 hPa (0.00047098563 inHg) per additional meter. | Absolute Pressure in hPa = (Voltage x 244.192829) + 494.948781 typical Absolute Pressure in inches Hg = (Voltage x 7.211029) + 14.615867 typical Note: Transfer function above applies to 1.5-meter cable. For sensors with cable lengths longer than 1.5 meters, subtract 0.015949406 hPa (0.00047098563 inHg) per additional meter. |
Accuracy | Uncertainty (k = 2):± 1.12 hPa (@ 25°C)± 3.43 hPa (-20 to 40°C)± 2.13 hPa (0 to 40°C) | Uncertainty (k = 2):± 0.83 hPa (@ 25°C)± 3.14 hPa (-20 to 40°C)± 1.83 hPa (0 to 40°C) |
Electrical time constant | 1 second | 1 second |
Calibration | Each sensor individually tested to meet or exceed published specifications.A certificate of quality is available for each individual sensor. | Each sensor individually calibrated.A certificate of calibration is available for each individual sensor.Performed at NRG’s ISO 9001: 2015-certified manufacturing facility.Traceable to National Institute for Standards and Technology (NIST) standards. |
Output signal range | 0.020 to 2.480 VDC | 0.020 to 2.480 VDC |
Turn on time | < 20 ms | < 20 ms |
Resolution | 0.0092 hPa (0.0027 inHg) | 0.0092 hPa (0.0027 inHg) |
Drift | ± 1.0 hPa per year | ± 1.0 hPa per year |
POWER REQUIREMENTS | ||
Supply voltage | 5 to 15 VDC5 V pulsed excitation recommended Note: When using a 3rd party data logger capable of pulsed excitation operation, please allow a minimum of 25ms settling time between the initial power-up and reading the sensor output voltage. | 5 to 15 VDC5 V pulsed excitation recommended Note: When using a 3rd party data logger capable of pulsed excitation operation, please allow a minimum of 25ms settling time between the initial power-up and reading the sensor output voltage. |
Supply current | 1.0 mA with recommended 5 V pulsed excitation1.25 mA max | 1.0 mA with recommended 5 V pulsed excitation1.25 mA max |
INSTALLATION | ||
Mounting | For maximum protection against ingress, place sensor inside data logger shelter box. Recommended but not required.A hose clamp is included with each sensor to mount sensor directly to met tower beneath a data logger shelter box.An optional mounting bracket is sold separately for secure mounting up-tower. | For maximum protection against ingress, place sensor inside data logger shelter box. Recommended but not required.A hose clamp is included with each sensor to mount sensor directly to met tower beneath a data logger shelter box.An optional mounting bracket is sold separately for secure mounting up-tower. |
Tools required | 8 mm (5/16 inch) nut driver or flat blade screwdriver | 8 mm (5/16 inch) nut driver or flat blade screwdriver |
Accessories | BP60 Mounting Bracket available for secure up-tower installations. | BP60 Mounting Bracket available for secure up-tower installations. |
Wiring | Wire leads:Signal (clear wire)Ground (black wire)Excitation (red wire)Shield wire for earth ground | Wire leads:Signal (clear wire)Ground (black wire)Excitation (red wire)Shield wire for earth ground |
ENVIRONMENTAL | ||
Operating temperature range | -40 to 70°C (-40 to 158°F) | -40 to 70°C (-40 to 158°F) |
Operating humidity range | 0 to 100% RH | 0 to 100% RH |
Lifespan | 2 years + | 2 years + |
Other | IP55 Rated | IP55 Rated |
PHYSICAL | ||
Cable length | 1.5m (5 ft) | 1.5m (5 ft) |
Weight | 0.12 kg (0.27 lbs) | 0.12 kg (0.27 lbs) |
Dimensions | 55 mm (2.15″) diameter x 101 mm (4.0″) tall including cable gland | 55 mm (2.15″) diameter x 101 mm (4.0″) tall including cable gland |
MATERIALS | ||
Cable | 3 conductor 22 AWG, with overall foil shield and drain wire, PVC jacket | 3 conductor 22 AWG, with overall foil shield and drain wire, PVC jacket |
Enclosure | Weatherproof black ASA | Weatherproof black ASA |