DD-S Diameter Dendrometer (small)
The Ecomatik range of small diameter dendrometers are used for measuring plant diameters between 0 and 5 cm.
With measuring ranges of 11 mm or 25mm (depending on variation) and with linearity of <1% or 1%.
All dendrometers are supplied with a bare ended 5m sensor cable, extendable up to 100m.
Details
Specifications
Details
- DD-S1: Small Diameter Dendrometer 1
- Measuring plant diameter between 0 and 5cm
- Range of measurement 11mm
- Linearity: 1%
- DD-S2: Small Diameter Dendrometer 2
- Quick mount design, with 2 frames included (0-2.2cm and 1.8-5cm)
- Measuring plant diameter between 3 and 30cm
- Range of measurement 11mm
- Linearity: 1%
- DD-S3: Small Diameter Dendrometer 3
- Quick mount design, with 2 frames included (0-2.2cm and 1.8-5cm)
- Measuring plant diameter between 3 and 30cm
- Range of measurement 25mm
- Linearity: <1%
Specifications
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. |
| Measurement range | 11 mm linear | 11 mm linear |
| Resolution | Data logger dependent e.g.: CR300 series: 0.01 μm Dendrometer logger DL18: 0.2 μm |
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: normal outdoor field conditions,-25 –70 °C, 0 to 100% relative air humidity; |
| Â | Â | Hermetically Sealed Model DR1W: extreme environmental conditions including 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 (! stabilised!) 0.5 to 10 VDC,
Power consumption max. 0.28 μWh per measurement |
Vex (! stabilised!) 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 |
