LeveLine
®
Instruction Manual
10401-01026 Rev D
3.2.7. Regenerating Desiccant
When the desiccant in a Desiccant Cartridge has absorbed all the moisture it can and has
changed from orange to clear, it can be regenerated and reused by a simple drying
process.
Spread the desiccant crystals evenly on a suitable baking sheet and bake in an oven
between 100°C and 200°C for around an hour or until the colour has changed from clear
back to deep orange. After being allowed to cool, the crystals can be replaced in the
Desiccant Cartridge and reused.
3.2.8. Gauge (Vented) Version Zero Offset
Gauge (vented) loggers should, in theory, always measure a pressure of zero when not
submerged. In practice, however, this is rarely the case due to mechanical and electronic
drift, short term temperature differentials between the pressure and temperature sensors
and mechanical stresses.
With the LeveLine Gauge type loggers, any zero offset can be easily removed in LeveLink
using the Baro Correction feature detailed in section
Deploying the logger with a
QuickDeploy
™
Key will make this process fully automatic.
3.2.9. Recording the Deployment Offset
If an offset is required for post correction, measure the distance between the bottom of the
Logger and the desired reference point now.
This could be the surrounding ground level or the top of the mounting pipe, local sea level
or the bottom of a river bed.
If the water level is being referenced to some point above the logger (such as the top of the
borehole), the offset should be recorded as a negative number.
If the water level is being referenced to a point below the water surface, such as a river
bed, the offset should be recorded as a positive number. This offset can be input into the
LeveLink
™
software and automatically applied to the recorded data along with barometric
pressure and water density corrections.
© 2019 Aquaread
®
Ltd.
www.aquaread.com
Page 43 of 90
