DR/DD type plant stem radius/diameter change sensor
In the study of the relationship between plants and the environment, general environmental indicators, such as meteorological factors, soil, etc., can be continuously observed at high density every hour and every day, but plant indicators often only measure one or several a year, such as growth, yield, Annual ring width and so on, the result is a dependent variable of tens or hundreds of independent variables, it is impossible to determine exactly which environmental factors affect the growth of plants. If the stem change measurement system can continuously obtain plant-related data, the feasibility and accuracy of the research on the relationship between plants and the environment can be greatly improved.
The
advantage:
This instrument can locate and accurately observe the changes of plant stems, the data can be read directly, or it can be automatically recorded by data acquisition;
The dedicated supporting decimals can be used for continuous measurement for 2 years;
Advantages: high accuracy, cheap, easy installation, stable performance, the sensor does not require power supply during measurement, almost no maintenance measures, special sizes can be customized.
Technical Parameters:
model
DD type
DR type
Measuring range
Measuring the diameter change, suitable for plants with a diameter change of 0-20 cm, more than 20 cm need to be specially made; do not harm plants.
Measuring the radius change, suitable for plants with a diameter of more than 8 cm, two small holes of 4 mm should be drilled on the stem.
Expand the scope
11 mm, the measurement object needs to be readjusted after more than 11 mm
Standard configuration
Sensor, fixed frame, 2 m cable.
Sensor, fixed frame, 2 m cable.
Installation tool
Multimeter, two small wrenches, cable fixing straps.
Multimeter, two small wrenches, cable fixing belt, hand drill or electric drill (diameter 4mm), tree body injury protection glue.
Dimensions and weight
27×24×1.5 cm, 65 g
14×15×1.5 cm, 60 g
Read data
Need reading table or data collector
measurement accuracy
＜5mm (Daily change of plant radius 0～300mm)
Temperature Coefficient
＜0.1 mm/℃ (temperature change 1℃, change less than 0.1mm)
Applicable environment
Temperature -30～40°C, humidity 0～100%
output method
Analog output 0～50 kΩ, no power consumption.
Shell material
Surface reinforced aluminum, stainless steel
cable length
2 m, the cable can be extended to 200 m
Origin: Germany
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