SenTec

SEM228PC Photosynthetically Active Radiation Sensor

SEM228PC photosynthetically active radiation sensor is a high-tech product specifically designed for plant growth and photosynthesis research. It accurately measures and displays the contribution of different spectral bands to plant photosynthesis , helping researchers and horticultural enthusiasts gain a deeper understanding of plant responses to light.

SEM228PC photosynthetically active radiation sensor is a high-tech product specifically designed for plant growth and photosynthesis research. It accurately measures and displays the contribution of different spectral bands to plant photosynthesis , helping researchers and horticultural enthusiasts gain a deeper understanding of plant responses to light. With notable features , it boasts a high-precision spectrometer and a real-time data recording system , enabling rapid capture and analysis of the impact of light variations on plant growth. Its wide range of applications supports both plant physiological research in scientific institutions and precise light management in greenhouses , providing robust assistance for more efficient and scientific plant growth regulation.

WORKING PRINCIPLE
The SEM228PC Photosynthetically Active Radiation Meter uses a silicon photodetector and a 400~700nm optical filter. When light is present, it generates a voltage signal proportional to the intensity of the incident radiation, with sensitivity proportional to the cosine of the angle of incidence. Each meter provides its own sensitivity and the measurement value, expressed in μmol/m2 · s.

Parameters

Power supply7V~30V DC
Power consumption0.06W
Output signalRS485(Modbus)
Working temperature-30℃~75℃
Response spectrum400nm~700nm
Measuring range0~2500μmol/㎡·s
Resolution1μmol/㎡·s
Degree±2%
Response time10μs
Linearity≤±1%
Annual stability≤±2%

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