Table 8-3: Quality metric numbers
QM range
Description
Comments
4 to 4.99
In two to three months, this
sensor will need to be
recalibrated.
The BaroVUE 10 card will soon need recalibration.
Contact your local Campbell Scientific office for a
replacement card.
0 to 3.99
Recalibrate the sensor now.
The BV10 BaroVUE 10 card is out of calibration or has
a fault. Contact your local Campbell Scientific office
for a replacement card.
8.4 Correcting pressure to sea level
The weather service, most airports, radio stations, and television stations adjust the atmospheric
pressure to a common reference (sea level). Use the following equation to find the difference (dP)
in pressure between the sea level and the site. This equation assumes U. S. Standard Atmosphere
and dry air (Wallace, J. M. and P. V. Hobbes, 1977: Atmospheric Science: An Introductory Survey,
Academic Press, pp. 59-61).
Eq. 1
The value dP is in hPA and the site elevation, E, is in meters. Add dP value to the offset in the
measurement instruction.
Use the following equation to convert feet to meters.
Eq. 2
The corrections involved can be significant. For example, at 1000 hPa and 20 °C, barometric
pressure decreases by 1.1 hPa for every 10 m increase in elevation.
8.5
Device Configuration Utility
Use
Device Configuration Utility
software to change the SDI-12 address, view sensor
measurements, and update an operating system.
BaroVUE™10 Digital Barometer
18
