Portable chlorophyll analyzer FK-YL02

Portable chlorophyll analyzer FK-YL02 Purpose:

The chlorophyll analyzer can instantly measure the relative chlorophyll content (SPAD) or greenness level of plants, as well as leaf temperature, in order to understand the true nitrate demand of plants and determine the degree of soil nitrate deficiency or whether excessive nitrogen fertilizer has been applied. This instrument can increase the utilization rate of nitrogen fertilizer and protect the environment. It can be widely applied in agricultural and forestry related research institutions and universities to study plant physiological indicators and provide guidance for agricultural production.
Instrument principle:
Based on the absorption of visible spectrum by chloroplast pigment extraction solution, the absorbance of each pigment in the extraction solution can be calculated using a formula by measuring its absorbance at a specific wavelength with a spectrophotometer. According to Lambert Beer's law, the absorbance A of a colored solution is directly proportional to the solute concentration C and the thickness L of the liquid layer, that is, A=α CL in the equation: α proportionality constant. When the concentration of the solution is measured in percentage concentration and the thickness of the liquid layer is 1cm, α is the absorbance coefficient of the substance. The absorbance coefficients of various colored substance solutions at different wavelengths can be obtained by measuring the absorbance of pure substances with known concentrations at different wavelengths. If there are several absorbing substances in the solution, the total absorbance of the mixture at a certain wavelength is equal to the sum of the absorbance of each component at the corresponding wavelength. This is the additivity of absorbance. To determine the content of chlorophyll a, b, and carotenoids in the mixed extract of chloroplast pigments, simply measure the absorbance A of the extract at three specific wavelengths, and calculate its concentration based on the absorbance coefficients of chlorophyll a, b, and carotenoids at that wavelength. In order to eliminate the interference of carotenoids in the determination of chlorophyll a and b, the wavelength of monochromatic light used is selected based on the large absorption peak of chlorophyll in the red region.
Features:
The chlorophyll analyzer FK-YL02 can simultaneously measure two parameters, chlorophyll and leaf surface temperature, with upper computer software function and data export capability.
Fast and non-destructive live plant detection, without affecting plant growth.
One operation can simultaneously measure all parameters and display them in real-time.
Historical data can be viewed sequentially.
Measurement data can be connected to a computer to export measurement data, facilitating the management and analysis of plant nutrients.
Viewing historical data can be done in sequence or by jumping.
The data saved in the host after an unexpected power outage will not be lost.
Historical data can be deleted with just one click.
Can connect to a computer to export measurement data, facilitating the management and analysis of plant nutrients.
Powered by lithium batteries with backlight function.
Each parameter's report and curve graph can be queried and viewed by selecting a time period.
The data stored in the record can be backed up and saved in EXCEL format for future calls.
The data curve graph stored and recorded can be backed up and saved in BMP image format for future call.
Technical Specifications:
1. Measurement range: Chlorophyll: 0.0-99.9SPAD
Leaf surface temperature: -10-99.9 ℃
2. Measurement accuracy: Chlorophyll: within ± 1.0 SPAD unit (SPAD value ranges from 0-50 at room temperature)
Leaf surface temperature: ± 0.5 ℃
3. Repeatability: Chlorophyll: within ± 0.3 SPAD units (SPAD value between 0-50)
Leaf surface temperature: ± 0.2 ℃
4. Measurement area: 2mm * 2mm
5. Measurement time interval: less than 3 seconds
6. Data storage capacity: 1000 sets of data
7. Power supply: 4.2V rechargeable lithium battery
8. Battery capacity: 2000mAh
9. Weight: 200g
10. Working and storage environment: -10 ℃~50 ℃ ≤ 85% relative humidity