Ammonit
Ammonit
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state of the art measurement equipment for the wind industry
since 1989, marketed in more than 100 countries

Barometric Pressure Sensors

Barometric pressure sensors (barometers) measure the air pressure. Air pressure and air temperature should be evaluated for an accurate wind site assessment, however, because this data could be obtained from nearby weather stations, they are not considered an essential part of a measuring system. Even so, barometers are worth consideration, taking into account the savings made on the expense of supply, analysis and incorporation of external data over the course of a measuring campaign (at least 12 months). We generally would recommend the inclusion of an air pressure sensor as part of a measuring system.

  

Impact of measurement errors on  AEP calculation

Air pressure as well as air temperature significantly affect the AEP (Annual Energy Production). Hence according to IEC 61400-12-1 air pressure has to be measured in a wind measurement campaign.

Wind power is linear proportional to air pressure. A measurement error of 1% in air pressure induces 1% error on AEP. The standard IEC 61400-12-1 specifies the relations where the sensitivity factor for air pressure in the energy calculation is cB,i Pi / 1013 hPa.

Therefore IEC 61400-12-1 requires measuring air pressure and temperature.

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barometric pressure sensor AB 60

luftdruckmesser_ab60

Order-No:
S31100

Optional installation within a met-mast mounted steel cabinet

  • Piezoelectric barometric pressure sensor
  • Measuring range: 800 ... 1100 hPa (mbar)
  • Voltage output: 0 ... 5 VDC
  • Supply voltage: 9 ... 32 VDC
  • Low energy consumption: < 5 mA @ 12 VDC
  • Temperature range: -40 ... 85 °C
  • Humidity range: 0 ... 98% RH
  • Atmosphere: non ionic, non corrosive

Downloads

Datasheet

barometric pressure sensor AB 100

luftdruckmesser_ab100

Order-No:
S31200

Optional installation within a met-mast mounted steel cabinet

  • Piezoelectric barometric pressure sensor
  • Measuring range: 600 ... 1100 hPa (mbar)
  • Voltage output: 0 ... 5 VDC
  • Supply voltage: 9 ... 32 VDC
  • Low energy consumption: < 5 mA @ 12 VDC
  • Temperature range: -40 ... 85 °C
  • Humidity range: 0 ... 98% RH
  • Atmosphere: non ionic, non corrosive

Downloads

Datasheet

Barometric pressure sensor Vaisala PTB 110

Vaisala PTB 110

Order-No:
S32100 (PTB 110.3)
S32200 (PTB 110.2)
S32300 (PTB 110.1)

  • Measuring range:
    500, 600, 800 ... 1100 hPA
  • Capacitive absolute pressure sensor
  • Several pressure ranges
    • Total accuracy:
      ± 0.3 hPa at  15 ... 25 °C
      ± 0.6 hPa at    0 ... 40 °C
      ± 1.0 hPa at -20 ... 45 °C
      ± 1.5 hPa at -40 ... 60 °C
  • Output voltage: 0 ... 5 VDC
  • Low energy consumption < 4 mA @ 12 VDC

Downloads

Datasheet

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