Product introduction:
The portable chlorophyll meter is used to measure the relative content of chlorophyll in plant leaves. Plant growth is inseparable from a variety of nutrients, so we will apply a variety of fertilizers to plants, of which nitrogen fertilizer is the most common fertilizer. If too little fertilizer is applied, plants need not enough nutrition; if too much fertilizer is applied, it will lead to waste of fertilizer, and even lead to groundwater pollution. By measuring the relative content of chlorophyll, we can truly understand the demand of plants for nitrogen fertilizer, so as to provide the utilization rate of nitrogen fertilizer, and also protect the water from being polluted by too much nitrogen fertilizer.
Principle:
Based on the principle of monochromatic light, the red light (650nm) and infrared light (940nm) emitted by LED light source penetrate the blade and hit the receiver. The optical signal is converted into analog signal, which is amplified by amplifier and converted into digital signal by analog / digital converter. The digital signal is processed by microprocessor, and the SPAD value is calculated and displayed on the LCD screen.
Technical data:
1. Measurement range: 0.0-100 SPAD
2. Measuring area: 2mm * 2mm
3. Measurement accuracy: ± 1.0 SPAD unit
(SPAD values range from 0 to 50 at room   
temperature)
4. Repeatability: ± 0.3 SPAD unit (SPAD 
value between 0-50)
5. Measurement interval: less than 3 
 seconds
6. Data storage medium: SD card
7. Data storage capacity: 2GB
8. Power supply: 4.2V rechargeable lithium
 battery
9. Battery capacity: 2000mAh
10. Weight: 250g
11. Overall dimension: 140 × 85 × 45mm (L × w × h)
11. Working and storage environment: 0 ℃ - 50 ℃; 85% relative humidity

Wuhan Hanliny Technology Co., Ltd. is located in the Zhongnan International Building, Wuhan City, Hubei Province. The company is mainly engaged in research and development, production and sales of soil testing instruments, plant testing instruments and environmental testing instruments. It is a comprehensive technology enterprise integrating science, industry and trade. The main products include soil/fertilizer Nutritional Parameters, soil temperature and humidity meter, soil moisture meter, soil conductivity meter, soil salinity meter, soil moisture temperature and salinity meter, soil pH/Eh tester, soil three parameter tester, soil moisture station, soil drill, soil drill comprehensive suit, root drill suit, original soil sampler, etc.; photosynthetic instrument, Leaf transpiration rate meter, Plant respirometer, canopy analyzer, root scanning analysis system, chlorophyll meter, leaf area meter, stem strength meter, leaf thickness meter, etc.; weather station, handle weather station, greenhouse environmental station, greenhouse environmental recorder, temperature and humidity recorder, CO2 recorder, rainfall record Instrument, solar radiation recorder and other instruments.
The company's products are mainly used in agriculture, forestry, teaching, scientific research, meteorology, environment and other fields. It cooperates with many agricultural universities, scientific research institutions, agricultural extension stations, soil and fertilizer stations, agricultural and forestry bureaus, etc., and has been unanimously praised by customers. The company adheres to high-quality after-sales service, technical training for each sold instrument, regular return visit, Q & A, deeply trusted and supported by users.
Hanliny adheres to the concept of innovation and pragmatism, pursuit of excellence, sincerity and customer first, will adhere to the research and development of more advanced instruments and equipment, and serve customers with high-quality products, quality and preferential prices.