Comparison of several instruments capable of measuring illuminance With the accelerating process of national modernization, agriculture has gradually entered the modernization process. Concepts such as science and technology agriculture and precision agriculture have been gradually put forward. What comes with the modernization of agriculture is the continuous progress of scientific instruments. There are many agricultural scientific instruments, including grain and oil testing instruments, soil instruments, meteorological instruments, seed inspection instruments, and so on. In meteorological monitoring, measured light intensity is used more frequently. There are several instruments for measuring the illuminance, so this article will analyze the characteristics of these instruments. Light Quantum Recorder: Light Quantum Recorder is characterized by the spectral response of the probe to simulate the effective photosynthetic function, the instrument digital display, small and portable, with good accuracy and stability. The optical quantum recorder compensates for the shortcomings of previous recorders that can only set recording intervals and read data from a computer. One-touch switching can be done manually, or the sampling interval can be set at any time from the computer to automatically record data. The optical quantum recorder has three modes of manual, automatic and computer lock. Users can set the three modes according to their needs. Measurement is very convenient, and the measurement mode can be freely set. The demand for users is not high. If the user is very skilled in the operation, you can also select the manual mode for real-time measurement. The optical quantum recorder has a 32-channel simultaneous detection function, which can realize multi-point synchronous detection. Photosynthetic active radiation recorder: The portion of solar radiation that can be used by green plants for photosynthesis becomes photosynthetically active radiation, abbreviated as PAR. Photosynthetically active radiation is a powerful weapon for the study of crop photosynthesis. It is the basic energy source for biomass and directly affects the growth, development, yield, and product quality of plants. There are three models of photosynthetically active radiation recorders, namely GLZ-A, GLZ-B, and GLZ-C. The GLZ-B photosynthetically active radiation recorder has a powerful data storage function, and can store up to 30,000 sets of data. It can also Data is imported into the computer for data processing. Photosynthetically active radiation recorder range: 1-2,700 μmol m-2 s-1 (400-700 nm). Temperature illuminometer: The illuminance recorder is a versatile product that measures light and temperature. The measured illuminance was measured in Lux. The recording capacity is 60,000 sets of data, and the sampling time can be set freely. It can be selected from 2 seconds to 24 hours. After the setting is completed, the temperature illuminance recorder can continuously sample at an interval time, eliminating the trouble of once measurement. In addition, the temperature illuminometer has a 16-channel synchronous detection function, which can achieve multi-point synchronization detection. Calcium Zinc Stabilizer For PVC Pipe PVC Stabilizer,PVC Pipe Stabilizer,PVC Ca Zn Heating Stabilizer,Calcium Zinc Stabilizer For PVC Pipe Zhejiang Hongtian New Material Technology Co., Ltd. , https://www.hongtianstabilizer.com