Apogee SQ-120 Quantum Sensor

Apogee SQ-120 Quantum Sensor


0.20 LBS
Calculated at Checkout

A cheaper way to measure PAR than a regular PAR meter, you can use the SQ-120 with a multi/volt-meter and with an easy conversion translate that figure to PAR.  To use the SQ-120 you will need a voltmeter that can read mV (milli-volts).  Connect the positive lead of the voltmeter to the white wire of the SQ-120 and the negative lead of the voltmeter to the black wire of the SQ-120.  Once you are reading the mV output from the sensor, simply multiply that reading by 5.0 to get your PAR reading.

From the manufacturer:

The SQ-120 is a self-powered, analog original quantum sensor with a 0 to 800 mV output that has been calibrated for use with electric lights. The sensor features a rugged, self-cleaning sensor housing design. 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. Sensor includes IP68 marine-grade stainless-steel cable connector 30 cm from head to simplify sensor removal and replacement for maintenance and recalibration.

-Apogee SQ-120 Owners Manual
-Apogee SQ-120 Full Specifications

  • Easy Returns

    If you decide to change your project, don't need an item, or want a different product just contact our customer service team for an easy, hassle-free return within 60 days. Product must be new and unused.

  • Superb Customer Service

    Whether you're asking for product compatibility, have shipping questions, or need something expedited our customer service team is always here to lend a helping hand.

  • Free Shipping Over $229

    If you're in the contiguous US just spend over $229 and we'll ship your goods for free.