Purpose: To determine the water consumption (transpiration) of trees by directly measuring the water flow rate of tree stems; Based on the rate of upward transmission of heat pulses added to the stem flow and the degree of heat exchange with the surrounding water flow, the stem flow rate of the stem can be calculated mathematically using the theory of heat transfer and heat balance.
characteristic:
1. Measurement method based on thermal equilibrium method;
2. The sensor adopts a wrapped installation method, which does not cause damage to the plant itself;
3. Built in heat and temperature sensors;
4. Rechargeable lithium battery power supply, suitable for field measurement environments;
5. The collection time interval can be set to meet different measurement needs;
Basic technical indicators
1. Stem diameter range: 5-50mm (standard configuration with 1 sensor, customized according to user requirements)
2. Heating technology: thin film heating element
3. The required stem length for installing the probe is 10-15cm
4. Heating power: variable, up to 2W
5. Automatic measurement and manual measurement modes
6. Measurement interval time: 1-99 minutes
7. Measurable herbaceous and woody plants, suitable for large spaces
8. Users can set their own heating time and plant radius;

9. Power supply: rechargeable lithium battery
10. The power consumption is based on the size of the stem flow, with a maximum of 0.15A
11. Working temperature: -10 to 40 degrees Celsius (Deg. C)
12. Storage space: 4G
13. Instrument host size: 155mm * 90mm * 60mm
14. Probe and host connection cable can be configured according to customer requirements (standard length: 1.5 meters)
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3. High measurement accuracy and fast corresponding speed;
4. Screw type structural design, easy to overcome the influence of human operation on measurement results;
5. Low price, suitable for China's national conditions;
3、 Performance indicators：
1. Measurement range: 0-500N
2. Measurement accuracy: 0.1%
3. Resolution: 0.1N:
4. Memory: 2 GB SD card
5. Powered by 4 No. 5 batteries
6. Operating temperature:- 10℃-60℃
4Technical Services:
Warranty: 14 months; Location: Beijing; The company provides lifelong maintenance and repairs, and only charges cost fees outside the warranty period