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
　
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Sales: Sales@Qudao.com.cn / Support: support@qudao.com.cn
Product description: Plant root length and root surface area are important indexes to measure crop growth status because they are closely related to the intensity of crop photosynthesis and absorption of water and nutrients. The traditional manual method of cleaning and measurement of plant root systems requires a lot of time and labor work, and it is also prone to errors, which could seriously affect experimental process and accuracy. Root washing is a very important preliminary work for
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Company Overview
Established in 2003, Shaanxi Greelan Technology Development Co., Ltd is specialized in digital language lab, with strength on language learning system, language lab equipment and language lab software. Our company own self import and export right and pass the FCC, CE, ISO9001, ISO18001, CCC etc., authentication. At present, we have 12 hardware patents and 4 software copyrights.
After 13 years'development, Greelan products are widely used in the schools and universities
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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:
Separate
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