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MQ-500 & MQ-610 

The quantum meter is the tool of choice for scientists all over the world to accurately measure photosynthetically active radiation from all light sources. It has a hand-held meter, attached via cable, that displays and stores measurements. The sensor incorporates a blue-enhanced silicon photodiode and custom optical filters with a rugged, self-cleaning sensor housing design, an anodized aluminum body with an acrylic diffuser. Typical applications include PPFD measurement over plant canopies in outdoor environments, greenhouses, and growth chambers, and reflected or under-canopy (transmitted) PPFD measurements in the same environments.

The meter has a sample and log mode and will record an integrated daily total in mol m^-2 d^-1. Sample mode will record up to 99 manual measurements. Log mode will power the meter on and off to make a measurement every 30 seconds. Every 30 minutes, the meter will average the sixty 30-second measurements and record the averaged value to memory. The meter can store up to 99 averages. Once full, it will start to overwrite the oldest measurement with new ones. An integrated daily total will be recorded from the 48 averaged measurements (making a 24-hour period).

MQ-500 Spectral Range 389 to 692 nm ± 5 nm (wavelengths where the response is greater than 50 % of maximum)

MQ-610 Spectral Range 389 to 760 nm ± 5 nm (wavelengths where the response is greater than 50 % of maximum)

Measurement Range 0 to 4000 µmol mˉ² sˉ¹

Spectral Selectivity Less than 10 % from 412 to 682 nm ± 5 nm