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BP20 Barometric Pressure Sensor

A micro-machined absolute pressure sensor, the BP20 provides a high-level voltage output signal that is proportional to absolute pressure.

  • BP20 Barometric Pressure Sensor
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Configuration Options

  BP20 Barometric Pressure Sensor (#2046)
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 All Symphonie Data Loggers
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
Hose Clamps

Hose Clamps

Secure mounting booms to NRG TallTowers™ with hose clamps sized specifically for your tower tube.

Symphonie® SCM Card

Symphonie® SCM Card

Condition your sensor’s output signal so that a SymphoniePLUS3 Data Logger can read it by installing a Symphonie Signal Conditioning Module (SCM).