Due to their extremely low power consumption, Ecomatik dendrometers are ideal for battery-powered solutions, e.g.,in IoT applications. DD-S dendrometers are specially designed for small trees and branches as well as agricultural plants (diameter < 5 cm). The optimized device mounting enables stable installation without exerting excessive pressure on the measuring point. DD-S dendrometers thus deliver stable readings even on very small and herbaceous plants. DD-S dendrometers are available in three versions:
- DD-S1: with standard mounting frame
- DD-S2: with quick-mount frame
- DD-S2W: with a quick-mounting frame and hermetically sealed to withstand extreme environmental conditions (under snow cover, underwater, elevated exposure to dust and corrosive agents)
- Suitable for small trees and branches as well as agricultural plants with a diameter < 5 cm-Lightweight sensor
- Plants do not have to bear the weight of the sensor (requiresa separate supportaccessory for very small and sensitive plants)
- Injury-free installation, minimal pressure on the plant
- Stability against wind, snow, falling branches and fruits
Specific to the DD-S2 & DD-S2W models
- Quick mounting frame for fast, easy and tool
- free installation ofthe measuring object
Specific to the DD-S2W 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.
- Not suitable for diameters > 5 cm (see type DD-L)
Specific for the DD-S1 & DD-S2 models
- Not suitable for operation under extreme environmental conditions: e.g. high humidity, underwater, below snow cover, near the ground surface, elevatedexposure to dust or corrosive agents (e.g. coastal sands, volcanic ash), etc.(seemodel DD-S2W)
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)
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.
Sensor model name | Diameter Dendrometer Small Type DD-S1 | Diameter Dendrometer Small Types DD-S2 and DD-S2W (hermetically sealed) | |
Scope of application | Slow/average growth rates | Slow/average growth rates | |
Suitable for diameter | 0 to 5 cm | 0 to 5 cm | |
Special features/limitations | Fixation with a standard mounting frame | Fixation with quick-mount frame, much easier and faster installation, DD-S2W: sealed to withstand with a wide range operational conditions; see below. | |
Measurements range | 11 mm linear | 25,4 mm linear | |
Resolution | Data logger dependent e.g.: | Data logger dependent e.g.: CR300 series: 0.01 μm Dendrometer logger DL 18: 0.2 μm | |
Accuracy | Dendrometer dependent: max. ± 4.5% of the measured value (stable offset) Data logger dependent e.g.: CR300 series: ± (0.04% of the measured value +0.3 μm) Dendrometer logger DL18: ± (0.1% of the measured value +0.45 μm) | Dendrometer dependent: max. ± 4.5% of the measured value (stable offset) Data logger dependent e.g: CR300 series: ± (0.04% of the measured value +0.3 μm) Dendrometer logger DL18: ± (0.1% of the measured value +0.45 μm) | |
Output signal | Analogue, 0V to Vex (excitation supply voltage) | Analogue, 0V bis Vex (excitation supply voltage) | |
Temperature drift of the sensor | < 0.2 µm/°C in the whole measurement range | < 0.2 µm/°C in the whole measurement range | |
Linearity | < 1% | < 1% | |
Operational conditions | All Models: normal outdoor field conditions, -25 to–70 °C, 0 to–100% relative air humidity | All Models: Hermetically Sealed Model DR1W: even under extreme environmental conditions (underwater, below snow cover, under exposure to strongly corrosive substances e.g. saltwater, ash, aggressive agricultural chemicals) | |
Weight (sensor without cable) | 13 g | 15 g /DD-S2), 25g (DD-S2W) | |
Power supply | Vex (! stabilized!) 0.5 to 10 VDC, Power consumption max. 0.28 μWh per measurement | Vex (! stabilized!) 0.5 to 10 VDC, Power consumption max. 0.28 μWh per measurement | |
Material | Stainless steel and aluminium | Stainless steel and aluminium | |
Sensor cable length | 5 m, extendable on request to max. 100 m | 5 m, extendable on request to max. 100 m |