The technical specifications of the photosynthesis analyzer are attached for reference and selection!

The photosynthesis analyzer measures the amount of CO2 absorbed (released) by plant leaves over a certain period of time, and simultaneously measures factors such as air temperature and humidity, leaf temperature, light intensity, and leaf area for assimilating CO2. This allows for the direct calculation of photosynthesis indicators such as plant photosynthesis rate, transpiration rate, intercellular CO2 concentration, and stomatal conductance. This instrument has outstanding advantages such as high sensitivity, rapid response, strong anti-interference ability, easy operation, and the ability to perform live and continuous measurements. Therefore, it is widely used in many fields such as plant physiology, plant biochemistry, ecological environment, and agricultural science.

measurement method

Open circuit measurement

Measurement items:

Non diffusive infrared CO2 analysis

Indoor photosynthetically active radiation intensity (PARin) (optional)

Environmental photosynthetically active radiation intensity (PARout)

Leaf temperature

Inlet humidity of the leaf chamber

Leaf chamber outlet humidity

atmospheric pressure

Analysis and Calculation:

Leaf photosynthetic rate (Pn)

Leaf transpiration rate (Tr)

Intercellular CO2 concentration (Ci)

Pore conductance (Gs)

水分利用率(WUE)

Respiratory rate measurement (Rd)

Technical Indicators:

CO2 analysis:

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

Leaf chamber temperature:

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

Leaf temperature:

T-type thermocouple, measurement range: -20-60 ℃, resolution: 0.1 ℃, error: ± 0.2 ℃

Dual humidity sensors for intake humidity and exhaust humidity:

Swiss imported high-precision digital humidity sensor: measurement range 0-90%, resolution: 0.1%, accuracy: 1%

Built in photosynthetically active radiation measurement (PARin)

Silicon photodiode

Measurement range: 0-2500 μ molm-2s-1, accuracy: ± 5 μ molm-2s-1. Response wavelength range: 400-700nm

External photosynthetically active radiation sensor (PARout):

Silicon photovoltaic cell with correction filter

Measurement range: 0-2500 μ molm-2s-1, accuracy: ± 5 μ molm-2s-1. Response wavelength range: 400-700nm

Flow measurement: Micro electronic flowmeter, flow rate can be set arbitrarily within the range of 0.2-1.2L. Resolution: 0.0001L,

Zero drift: ± 0.005L, the flow rate of the air pump can be set according to needs, and the influence of different gas flow rates on photosynthesis can be measured. The gas flow rate is stable.

New type of blade chamber: The clamping force of the blade chamber can be adjusted according to the thickness of the blade, which can avoid damaging the blade and prevent air leakage. The upper leaf chamber is covered with a high transparency, non shrink film, which can effectively insulate heat. If the film is punctured, torn, or dirtied by the blade, it can be replaced at any time. Can be configured with a tripod.

Leaf chamber size:

Type I: (30 × 10mm)

Type II: (30 × 20mm) standard size

Type III: (30 × 30mm)

Type IV: (30 * 20mm) LED red and blue light source leaf chamber

Pipeline system: This instrument uses composite plastic hoses with low water and CO2 coagulation and adsorption properties, which can maintain good performance even at high temperatures and have smooth inner walls. Compared to PVC or silicone tubing, this tube has good hydrophobicity.

Atmospheric pressure:

Range: 150-1150mbar

Resolution: 0.1mbar

Error: ± 1.5%

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

Power supply: Large capacity DC8.4V rechargeable lithium battery, capable of continuous operation for 20 hours on a single charge (without connecting to an external light source)

Data storage: 16GB of memory, expandable to 32GB.

Data transfer: USB connection to computer can directly export data

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

Button: Six buttons, easy and convenient to operate, can set and modify dates, times, measurement intervals, data collection times, and test names.

Language selection: The Chinese English interface can be switched with just one click.

Volume: 260 × 260 × 130mm

Weight: Host 3.5kg