PiCUS TMS 3 manual
15
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Problems connecting to multiple sensors
When trying to simultaneously connect multiple sensors with the TMS 3 App (e.g. for showing them all
in live mode) it may happen that not all sensors connect. That can have multiple causes.
For once, it is possible that the maximum number of devices that can simultaneously connect to the
phone is reached (see
5.1. Maximum number of connected sensors
).
There is also the possibility that the connection fails due to too much radio noise in the vicinity. In this
case it helps to turn on the sensors one by one and to perform the device search for each one separately.
PiCUS TMS 3 mounting instructions
Pay attention to the following hints when choosing the mounting position of the PiCUS TMS 3 on the
trunk.
Installation of base sensors
In principle, the base sensor is to be mounted as close to the ground as possible, so that the sensors
centre is no more than 5 - 10 cm above ground. This is important for exclusively measuring the root
plate tilt. If the sensor is mounted higher, the bending of the trunk gains a greater influence on the
measuring result.
If the tree has large roots or buttress roots, the PiCUS TMS
3 should be mounted between the roots.
For trees on sloped ground it is recommended to mount
the PiCUS TMS 3 sideways, which is halfway between the
upper and lower ground entry points. This is determined
arbitrarily. If you use other mounting points make sure to
always use the same. This guarantees comparability
between
different
trees
or
between
different
measurements on the same tree.
Installation of control sensors
The measurements done with the control sensor are primarily used for determining the source of the
base sensors tilt.
Ongoing research in the field of Wind Reaction Measurements may yield new analysis algorithms in the
future. In order to be prepared for such an eventuality, and therefore for the retroactive analysis of old
measurement data, it is recommended to always log the exact height of the control sensor. The control
sensors height should be between two and three metres.
For a methodical approach it is sensible to use the same mounting height for all measurements.
Tree with large
roots
Tree on sloped
ground
