Plant transpiration rate refers to the rate at which water is released into the atmosphere through the surface of the plant (mainly leaves) when it passes through the plant. The transpiration force of transpiration of plants is the main driving force for passive water absorption and translocation of water, which is especially important for tall trees. Transpiration can promote the transportation of substances in xylem juice, mineral salts and roots in soil. Synthetic substances can be transported and distributed to various parts of the plant along with the absorption and collection of water; transpiration can also reduce the temperature of the plants and prevent the leaves from being burned because of the high heat of vaporization of the water. A large amount of radiant heat can be lost during transpiration. The normal operation of transpiration is conducive to the assimilation of CO2. This is because when the leaves are transpiration, the pores are open, and the open pores become the passage of CO2 into the leaves. Therefore, the measurement of plant transpiration rate is of great significance for agricultural research, teaching, horticultural research, forestry research and so on.
The plant transpiration rate meter can test the following indicators:
Photosynthetically active radiation (PAR)
1.Multiple indicators: Simultaneous measurement of air temperature, blade temperature, air humidity, photosynthetically active radiation intensity and other indicators, and calculate the plant transpiration rate;
2. Intelligent: multi-information Chinese menu display and cursor-guided operation, instantly display and store the measurement process and final result screen.
3. Small size, light weight, carry around, single operation;
4.Wide range of applications: with different types of leaf chambers, can be widely used in the determination of different shapes of leaves of various plants such as field crops, fruit trees, vegetables, pastures;
5.High cost performance: low price, low cost of use and easy maintenance.
Switzerland imports high-precision digital temperature sensors,
Measuring range: -20-80 ° C, resolution: 0.1 ° C, error ± 0.2 ° C
Platinum resistance, measuring range: -20-60 ° C, resolution: 0.1 ° C, error ± 0.2 ° C
Switzerland imported high-precision digital humidity sensor, measuring range 0-100%, resolution: 0.1%, error ≤ ± 3%
Photosynthetically active radiation (PAR):
Silicon photocell with correction filter, measuring range: 0-3000μmol m 2 / sec, accuracy <5μmol m 2 / sec
Flow: glass rotor flowmeter
Leaf chamber size: standard size 55×20mm, can be customized according to customer needs
Working environment: temperature 20 ° C - 50 ° C, relative humidity: 0-100% (no condensation)
Power supply: DC7.4V lithium battery, can work continuously for 10 hours
Data storage: 2GB SD card
Display: 320 × 160 dot matrix, Chinese interface
Volume: 260 × 260 × 130mm
Weight: 3.25kg host;