It can be widely used in agricultural production and agricultural research. For the investigation of canopy light energy resources, measuring the interception of light in plant canopies, and studying the relationship between crop growth and development, yield quality and light energy utilization. This instrument is used for 400nm- Photosynthetically active radiation (PAR) in the 700 nm band is measured and recorded in units of micromoles (μmolsm2/sec) in square meters per second. Feature 1. The plant canopy measuring instrument is an integrated design, including liquid crystal display, operating buttons, storage SD card and measuring probe. 2. The instrument menu is simple in operation, small in size and convenient to carry. 3. The storage medium is a general-purpose SD card on the market, with large storage capacity and convenient data management! 4. There is a reasonable power management scheme in power consumption. During the test, the instrument automatically enters the standby state according to the actual situation. When necessary, press the wake-up button to wake up the screen and observe the actual data. 5. Measurement methods are divided into automatic and manual. 6. The automatic measurement interval is 1 minute minimum, and the automatic measurement times are up to 99 times. Manual measurement can be manually collected according to actual needs

Measuring range	0-2700μmol m2/sec
Resolution	1μmol m2/sec
Response time	10μs
Automatic acquisition interval	1-99 minutes
Automatic acquisition times	1-99 times
Data storage capacity	2GB (standard SD card)
Total instrument length	75 cm
Probe length	50 cm
Number of sensors	25 (standard)
Power	2 5th battery
Working environment	0°C-60°C; 100% relative humidity