DD-RO rhizome and underwater plant growth measuring instrument

DD-RO rhizome and underwater plant growth measuring instrumentPurpose:Designed for continuous measurement of root diameter, growth of aquatic plants, and creeping plants. The soft and sturdy rubber jacket protects the entire sensor and pressure sensor handle from water and solid particles, and the device is waterproof. The additional metal bracket can protect the sensor components that receive signals from the pressure exerted by the soil. The specific gravity of the entire device is close to that of water. Therefore, when used underwater, it is floating and does not impose additional loads on the measured object. Easy to install, no special protective measures required.

Features:

• Waterproof, suitable for use on the ground and underwater;

• The pressure on the measuring point is very low;

• Underwater measurement does not impose any additional load on the measured object;

• Suitable for long-term, fixed-point, unsupervised observation;

• Only applicable to plants with a diameter less than 2 cm;

• Low power consumption, for example, using DL10 data acquisition, a built-in ordinary battery can continuously record data for more than two years;

• The resolution can reach up to 0.01 μ m (depending on the resolution of the data acquisition).

DD-RO rhizome and underwater plant growth measuring instrumentTechnical parameters:

Scope of application	Slow/Normal Growth
Applicable plant diameter	0-2cm
measurement range	11mm
resolution	0.01 μm（CR300 Logger） 0.2 μm（DL18 Logger）
accuracy	Depending on the growth measuring instrument: maximum ± 4.5% of the measured value (stable offset) ± (0.04% of measured value+0.3 μ m) (CR300 Logger) ± (0.1% of measured value+0.45 μ m) (DL18 Logger)
Temperature coefficient of sensor	<0.2 µm/°C
Linear coefficient	<1%
working conditions	Temperature range -25 ℃ -70 ℃, humidity range 0-100% Applicable topoorEnvironment (underwater, below snow cover, highly corrosive substances such as saltwater, ash, corrosive agricultural chemicals)
Weight (sensor only, no cables)	30g
power supply	0.5 to 10 VDC, maximum power consumption per measurement 0.28 μ Wh
material	Stainless steel and aluminum
sensor length	5 meters, can be extended up to a maximum of 100 meters