SQ Photosynthetically active radiation sensor

The SQ-212-SS photosynthetically active radiation sensor is sensitive to radiation at wavelengths of 400-700nm, closely matching the plant's response to light. As the radiation entering the SQ212 photosynthetically active radiation sensor at a low Angle is often reflected, resulting in inaccurate values, the SQ-212-SS photosynthetically active radiation sensor adopts the top arc design to receive more low-angle incident radiation and reduce the cosine response error.

The ApogeeSQ-212-SS photosynthetically active radiation sensor is sensitive to radiation at wavelengths of 400-700nm, closely matching the plant's response to light. Since radiation entering the sensor at a low Angle is often reflected, resulting in inaccurate values, the ApogeeSQ-212-SS photosynthetically active radiation sensor uses a top arc design to receive more low-angle incident radiation and reduce cosine response error. In general application, the typical cosine error is less than 2%. The temperature drift is less than 0.1% per degree Celsius. Time drift 1% / year, the main reason is the aging of the photocell, it is recommended to recalibrate every 2 years.

Product characteristics

• Self-cleaning hemispherical sensor head reduces precipitation accumulation
• Solid sensors reduce internal condensation in humid environments
• The sensors are designed for continuous outdoor use and can also be placed underwater

Technical parameter

• Power supply: 5-24VDC
• Sensitivity: 1.0mv/µmom-2s-1
• Output: 0-2.5V
• Accuracy: ±5%
• Repeatability: <0.5%
• Drift: <2%/ year
• Response time: <1ms
• Viewing Angle: 180°
• Spectral range: 410 to 655nm
• Temperature drift: 0.06±0.06%/℃
• Diameter: 24mm
• Height: 28mm
• Weight: 140g(including 5m cable)