The Apogee Instruments SQ-616 400-750 nm USB ePAR Sensor is the latest upgrade of the ePFD sensor, designed to measure the photosynthetically active radiation range ePAR 400-750 nm. It can be connected directly to a computer to measure and log real-time PPFD data. With a resolution of 0.1 µmol mˉ² sˉ¹ and a calibration uncertainty of ± 5%, it is accurate and reliable. The sensor has an IP68 protection rating and is suitable for use in a wide range of temperatures and humidity. With a 4-year warranty against defects in materials and workmanship, it is a long-lasting investment for your research.
- Resolution 0.1 µmol mˉ² sˉ¹
- Calibration factor Individual for each sensor and stored in the firmware
- Calibration uncertainty ± 5 %
- Repeatability of measurement Less than 1 % up to 4000 µmol mˉ² sˉ¹
- Long-term drift (volatility) Less than 2% per year
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