Product description:
Stem flow is one of the subjects in the study of water balance in forest ecosystems. In hydrology, stemflow is the flow of intercepted water down the trunk or stem of a plant. Stem flow, along with through fall, are responsible for the transferral of precipitation and nutrients from the canopy to the soil. QT-Y/H stem flow collector is used to collect and analyze the stem flow.
QT-Y/H Automatic stem flow collector QT-Y/H Automatic stem flow collector
Principle:
The system is composed of collecting units, a flow sensor and a data logger. It can continuously and automatically record the start time, end time and duration of stem flow, and also stem flow rate. The logged data can be export to excel or text file format to facilitate data processing.
Features：
1. The system is suitable for all kinds of trunks. QT-Y is better for trunk diameter less than 14 cm, QT-H is for more than 14 cm.
2. It is easy to install and battery-powered, no need of external power supply.
3. The system is equipped with a sensor with high resolution of 4.13 ml
4. The data logger can record the air temperature when the stem flow is running.
Technical Parameters:
Recording range: 0 - 66000ml, resolution: 4.13ml;
Storage capability: 16,000 records;
Can set the start time and date;
Download mode: download data through the infrared downloader with USB interface
EEPROM memory, no data loss when power outage;
Fully-sealed data logger can be placed in the flow sensor device;
Internal LED lights indicate operating status;
The battery can last about 1 year.
Event resolution: 1 second;
Temperature measurement range: -20-70℃, temperature accuracy: 0.5℃, resolution: 0.1℃;
Time accuracy: ±1 munities/week;
The system is equipped with a protection case
Made in China
　
Beijing Tel: +86-10-62111044 / Fax: +86-10-62114847 / Add: Suite 6B13 Huajie Plaza, 13 Dazhongsi, Haidian District, Beijing 100098, China
Sales: Sales@Qudao.com.cn / Support: support@qudao.com.cn
Contact Information
Email: ssdlabeurope@gmail.com
WHATSSAP….+237 671270738
Skype: Dr urbain.awono
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Product description:
This instrument is to measure plant stem strength against the wind. Users only need to push the instrument against the stem to get stem strength of the plant.
QT-DFA Portable plant stem strength tester
Features:
1. This instrument has high measuring precision and high resolution. Two model - QT-DFA01 and QT-DFA02- are available for different plants;
2. Data can be shown on a big LCD with screen rotation function;
3. The instrument can be connected to computer for
Product description:
The system follows the design of the Australian Commonwealth Scientific and Industrial Research Organization (CSIRO). Root washing is a very important preliminary work for measurements of root systems, however, the traditional manual method of cleaning plant root systems requires a lot of time and labor work, and it often damages the root system. QT-RWC automatic root washing system can well keep the integrity of fine roots.
QT-RWC Root Washing System
Features:
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