DD-L Diameter Dendrometer Large

The DD-L series dendrometers are used for high-precision and continuous measurement of stem diameter changes. These devices are suitable for long-term application in outdoor conditions. Due to their extremely low power consumption, Ecomatik dendrometers are ideal for battery-powered solutions, e.g., in IoT applications.

DD-L dendrometers are specially designed for small- to medium-sized stems and branches (with diameters ranging from 3 to 30 cm; DD-L1W, max. 20 cm diameter).

DD-L dendrometers are fixed to the measuring object with two UV-resistant elastic bands.

This simple and very stable mounting method fixes the sensor at the desired measuring point without exerting excessive pressure on the trunk surface.

DD-L dendrometers are available in four versions:

1. DD-L1: with a measuring range of 11 mm for species with slow and average growth rates.
2. DD-L2: larger measuring range of 25 mm for fast-growing species.
3. DD-L3: larger measuring range of 50 mm for very fast-growing species.
4. DD-L1W: (previously DDW): hermetically sealed to withstand extreme environmental conditions, e.g. high humidity, underwater, below snow cover, near the ground surface, elevated exposure to dust or corrosive agents (e.g. coastal sands, volcanic ash), etc. The DD-L1W is (suitable for trunk diameters between 3 and 20 cm)

Lightweight sensor

Injury-free installation, minimal pressure on the plant

Maximum stability against wind, snow, falling branches and fruit

Diameter-specific frame size available for diameters ranging from 3 – 30 cm

Specific to the DD-L2 & DD-L3 models

Extended measuring range; reduced maintenance effort (i.e. longer time interval between readjustment of the dendrometer frame) for fast-growing species

Specific to the DD-L1W model

Hermetically sealed to withstand extreme environmental conditions: e.g. high humidity, underwater, below snow cover, near the ground surface, elevated exposure to dust or corrosive agents (e.g. coastal sands and salt, volcanic ash), etc.

Limits of the DD-L series

Not suitable for diameters > 30 cm (or > 20 cm DD-L1W), (see types DC and DR for diameters > 30 cm)

Specific to the DD-L1, DD-L2 & DD-L3 models

Not suitable for operation under extreme environmental conditions: e.g. high humidity, underwater, below snow cover, near the ground surface, elevated exposure to dust or corrosive agents (e.g. coastal sands, volcanic ash), etc. (see model DD-L1W)

Accessories & Compatible Products

Data loggers

From small and compact to an extensive measuring network, Ecomatik offers complete system solutions for sensor data acquisition in any desired size:

Mini-Systems (e.g. DL18)

Maxi-Systems (e.g. Campbell data logger station)

Note

The output signal of all Ecomatik dendrometer models is an analogue DC voltage. Our dendrometers are therefore compatible with almost all common data loggers and microcontrollers with analogue voltage input channels (e.g. also Arduino). If you are unsure about the compatibility of an existing data logger, please do not hesitate to contact us.