:: Product Information

Root and aquatic plant dendrometer (DRO)


Root and aquatic plant dendrometer (DRO)

The DRO Dendrometers is designed for continuous measurement of roots, aquatic plants and creepers. The device is waterproof. The sensor rod is protected with soft, light resistant rubber. The metal clamp protects the sensor from excessive pressure from top soil. The unit has specific weight similar to water, when used under water therefore has no impact on plants. It is easy to install and maintenance free. By more than 1 year test, it has proven itself well.


■ Waterproof, suitable for use in/on the soil and under  water

■ Low pressure at the measuring point

■ Ideal for long-term measurement with less manpower


■ Only for diameter smaller than 2 cm



■ Complete with 5 m cables


Options / Ordering Information

■ Cable extension (please specify in meters)

■ Data Logger


Technical specifications

NameRoot and aquatic Plant Dendrometer (DRO)
Suitable for diameter0-2 cm
Range of the sensor11 mm
Accuracy±1.5 μm ± 0,12% (CR1000 Logger)
Resolution0.2-2.6 μm (dependent on used data logger)
Thermal expansion coefficient of the sensor<0,1 μm/K
Operating conditionsAir temperature: -30 - 40° C, air humidity: 0-100%

related products

Inquiry online

Dianjiang Group Limited
Add: Room 1510,15/F,New Commerce Centre, No.19 On Sum Street, Shatin, N.T., Hong Kong.
Tel: (852) 3690 1588   Fax: (852) 3690 1586
Email: Dianjiang_HK@yahoo.com.hk   Hongkong@Dianjiangtech.com
© Dianjiang Group Limited All Rights Reserved.