Further processing your weather data
helps you seamlessly import data into MS Excel
Dataset Import Wizard
spreadsheets. Multiple dataset files may be imported and the data interleaved.
See
GP1 Quick Start Guide
for instructions on using the Dataset Import Wizard.
Once your data is in Excel, many third-party Excel add-ins are available to help you
process your database.
Note: at the time of writing this document Excel can only graph up to 32000 lines of
data.
Moving the station
For its protection, remove the wind sensor vane before moving the weather station.
The
blue box is NOT drop proof
, so carry it carefully. Do not ship it by commercial
carrier without further protective packing.
Battery Life
Replace the battery before
the battery voltage indicator
drops below 5.5V.
At 1 reading/ minute on all
sensors a 9V Alkaline battery
may last 90 days.
To increase this, reduce the
reading frequency, and/or use
a lithium battery or external
lead acid battery.
The RH sensor dominates the
current consumption -
reducing RH sensor readings
to once every 5 minutes will
more than double battery life.
You might expect an external 10 Ahr lead acid battery to last longest, but internal self
discharge may limit this to 12 months at 25
°
C or only 3 months at 40
°
C. So unless it is
periodically recharged – for example by a solar panel - a lead acid battery may not
outlast a Lithium battery with its longer shelf life.
Note: When retrieving data, keep an eye on your logger battery. Its status is reported
by the logger software, and you can also log it along with the sensor readings. The
voltage reported is that presented to the sensors, and is slightly less than that at the
battery terminals.
Battery Life Estimator
0
200
400
600
800
0
10
20
30
40
50
60
70
80
90
100
Frequency of RH readings (minutes)
Li
fe
(
da
y
s
)
9V Lithium
9V alkaline
Page
9
© 2007 Delta-T Devices Ltd
