The working principle of chlorophyll analyzer
Two LED light sources emit two kinds of light, one is red light (peak wavelength 650nm) and one is infrared light (940nm). It is amplified by the amplifier and converted into a digital signal by the analog / digital converter. The digital signal is processed by the microprocessor, and the SPAD value is calculated and displayed on the display screen.
Regarding the working principle of the chlorophyll analyzer, our plant nutrition analyzer manufacturer can briefly introduce the following to you, and hope to help everyone:
Two LED light sources emit two kinds of light, one is red light (peak wavelength 650nm), one is infrared light (940nm), two kinds of light penetrate the blade and hit the receiver, the optical signal is converted into analog signal, analog signal It is amplified by the amplifier and converted into a digital signal by the analog / digital converter. The digital signal is processed by the microprocessor, and the SPAD value is calculated and displayed on the display screen.
In addition to the working principle of the chlorophyll analyzer introduced by the plant nutrition analyzer manufacturer, we also need to know about the calibration and calculation of the measured value of the chlorophyll analyzer, the specific steps are as follows:
1. During the calibration process, the indenter does not clamp the sample, the two LEDs emit light in sequence, the received light is converted into an electrical signal, and the ratio of the light intensity is used to calculate.
2. After the sample is clamped by the indenter, the two LEDs emit light again. The light transmitted through the blade hits the receiver and is converted into an electrical signal. The intensity ratio of the transmitted light is calculated.
3. The values ​​of steps 1 and 2 are used to calculate the SPAD measurement value, which represents the current relative chlorophyll content of the clamped sample leaves.
If you have a need for a chlorophyll analyzer, you can contact our plant nutrition analyzer manufacturer. In addition, we provide all kinds of plant nutrition analyzer.
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