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SQ-422-SS Modbus Digital Output Quantum Sensor

Reference SQ-422-SS

Condition: New

The SQ-422 sensor outputs a digital signal using Modbus RTU protocol over RS-232 and RS-485. The sensor is calibrated for sunlight and electric lights, selectable through Modbus commands, and has a command that automatically applies the immersion effect correction factor for underwater measurements.

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SQ-422 Manual Download (1.67M)

The sensor features a rugged, self-cleaning sensor housing design, and high-quality cable terminating in pre-tinned pigtail leads for easy connection to dataloggers and controllers. Typical applications include PPFD (Photosynthetic Photon Flux Density) measurement over plant canopies in outdoor environments, greenhouses, and growth chambers, and reflected or under-canopy (transmitted) PPFD measurements in the same environments. Quantum sensors are also used to measure PAR (Photosynthetically Active Radiation)/PPFD in aquatic environments, including salt water aquariums where corals are grown.