Photosynthetic measurement instrument

Instrument Introduction:

The HD-GH20 photosynthesis meter measures the amount of CO2 absorbed (released) by plant leaves within a certain period of time, and simultaneously measures air temperature and humidity, leaf temperature, light intensity, and leaf area that assimilates CO2, and can directly calculate photosynthesis indicators such as plant photosynthesis rate, transpiration rate, intercellular CO2 concentration, and stomatal conductance. The instrument has outstanding advantages such as high sensitivity, rapid response, strong anti-interference, easy operation, and can perform living and continuous measurements. Therefore, it is widely used in many fields such as plant physiology, plant biochemistry, ecological environment, and agricultural science.

Product Features:

Multi-function: Simultaneously measure photosynthetic rate, transpiration rate, intercellular carbon dioxide concentration, stomatal conductance and water use efficiency, as well as ten indicators such as carbon dioxide concentration, relative humidity, photosynthetically active radiation, air temperature, and leaf temperature

Stability: The dual-wavelength infrared carbon dioxide analyzer with temperature regulation has the characteristics of stability, high accuracy, and sensitive response. The carbon dioxide difference acquisition can be completed within 1 second. The air pump flow rate can be set as needed, and the effect of different gas flow rates on photosynthesis can be measured, and the gas flow rate is stable.

Intelligent: Multi-information Chinese menu display and cursor-guided operation, instant display and storage of the measurement process and final results on the screen.

Small size: light weight, portable, single-person operation.

Wide application: equipped with different types of leaf chambers (respiratory reactors), it can be widely used in the measurement of leaves of different shapes of various plants such as field crops, fruit trees, vegetables, forest trees, forage grasses, and the respiration of soil, seeds, insects, etc.

High cost performance: low price, low use cost, and easy maintenance.

Measurement items:

Non-diffusive infrared CO2 analysis

Leaf temperature

Photosynthetically active radiation (PAR)

Leaf chamber temperature

Leaf chamber humidity

Analysis and calculation:

Leaf photosynthetic rate (Pn)

Leaf transpiration rate (Tr)

Intercellular CO2 concentration (Ci)

Stomatal conductance (Gs)

Water use efficiency (WUE)

Respiration rate measurement (Rd) can be added

Technical indicators:

Measurement method: open circuit measurement, more reliable measurement data

CO2 analysis:

Dual-wavelength infrared carbon dioxide analyzer with temperature regulation, measurement range: 0-3000ppm, resolution: 0.1ppm; accuracy 3ppm. Carbon dioxide measurement is not affected by temperature changes, with stability, high accuracy, and sensitive response. Carbon dioxide difference collection can be completed within 1 second.

Leaf chamber temperature:

German Heraeus high-precision digital temperature sensor, measuring range: -20-80℃, resolution: 0.1℃, error ±0.2℃

Leaf temperature:

Platinum resistance, measuring range: -20-60℃, resolution: 0.1℃, error ±0.2℃

Leaf humidity:

Swiss imported high-precision digital humidity sensor:

Measuring range 0-85%, resolution: 0.1%, error ≤ 1%

Photosynthetically active radiation (PAR):

Silicon photocell with correction filter

Measuring range: 0-3000µmol·m -2·s-1, accuracy <1µmol·m -2·s-1. Response wavelength range: 400～700nm

Flow measurement: micro electronic flowmeter, flow can be set arbitrarily. Air pump flow rate ≤1.5L. Error: 1%, <±0.2% in the range of 0.2～1L/min, resolution: 0.0001L.

Zero drift: ±0.005L, the air pump flow rate can be set as needed, and the effect of different gas flow rates on photosynthesis can be measured. The gas flow rate is stable.

Leaf chamber size: standard size 55×20mm, other sizes can be customized according to customer needs

Operating environment: temperature -20℃-60℃, relative humidity: 0-85% (no water vapor condensation)

Power supply: large-capacity DC8.4V rechargeable lithium battery, one charge can work continuously for 12 hours (not connected to an external light source)

Data storage: memory 16G, expandable to 32G

Data transmission: USB connection to a computer can directly export data

Display: 3.5" TFT true color LCD color display, resolution 800×480, clearly visible under strong light

Buttons: six buttons, simple and convenient operation

Volume: 260×260×130mm

Weight: host 3.25kg host

Optional GPS positioning, real-time display of longitude and latitude

Product's Website：http://en.huoerd.com/ghzycdy/134.html