Point Dendrometer

Technical specification

Span

8 890 µm

Resolution

0.27 µm

Linearity

< 5%

Battery life

More than 10 years on the electronics, the same as a TMS Standard. Cell chemistry guaranteed for 10 years by the battery manufacturer.

Memory

507 872 records (about 14 years in Basic mode, one reading every 15 minutes)

Size of main body

25 x 113 mm

That figure is for the electronics. The measurement probe is a mechanical part and does not last as long - in the field it can be fouled or bent, and there is little any point dendrometer can do about that. If the probe is damaged, the device still records air temperature for a long time afterwards.

Why choose Point Dendrometers?

• High precision monitoring of micro-scale stem diameter changes (< 1 µm).
• Automatic long-term recording with large internal memory capacity.
• Built-in air-temperature measurement via an integrated thermometer.
• Robust construction suitable for outdoor use in extreme conditions.
• The same electronics as a TMS Standard: more than 10 years unattended, nothing to charge or service.
• Easy data download using the TMD Adapter and Lolly Software.

Custom variants

The listed versions are what we keep as standard, but they are not the only thing we can build. Most of the range began exactly this way: the TMS, the Point Dendrometer and many of the variants exist because a research project needed something that did not exist yet. If your deployment needs something the standard range does not cover, write to us at tomst@tomst.com and we will discuss what is possible.

Typical use cases

• Long-term tree growth monitoring.
• Daily stem shrink/swell tracking (water status and stress response).
• Forestry, ecology, and climate research.
• Comparing tree response across sites and environmental conditions.