MQ-610: 400-750 nm ePAR Meter

Apogee's newest, cutting-edge ePAR sensor was created in 2021 as an upgrade to our ePFD sensor and designed to measure the newly defined 400-750 nm ePAR radiation range that research has shown to

  • Product Name:MQ-610: 400-750 nm ePAR Meter
  • Item No.:MQ-610
  • Manufacturers:Apogee
  • Country of Origin:USA

Apogee's newest, cutting-edge ePAR sensor was created in 2021 as an upgrade to our ePFD sensor and designed to measure the newly defined 400-750 nm ePAR radiation range that research has shown to be photosynthetically active, beyond the traditional 400-700 nm range. The MQ-610 has a hand-held meter, attached via cable, that displays and stores measurements. The sensor features a rugged, aluminum housing that is fully-submersible and built to withstand harsh conditions. Typical applications of ePAR sensors include measuring total ePAR intensity over plant canopies in all growing environments, monitoring and adjusting grow lights, and researching plant morphogenic activity and photobiology. Many next generation LED fixtures, the sun, and other light sources emit these newly confirmed Far-red photosynthetic wavelengths, but they have not been measurable by traditional 400-700 nm PAR meters until now.

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/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. A Daily Light Integral will be recorded from the 48 averaged measurements (making a 24 hr period). Sample and log measurements can be reviewed on the LCD display or by downloading the data to a computer, however, the integrated daily total can only be viewed by downloading the data to a computer. Downloading data to a computer requires the AC-100 communication cable (a standard USB cable will not work) and ApogeeAMS software.


Calibration Uncertainty± 5 %Measurement Range0 to 4000 µmol m-2 s-1Measurement RepeatabilityLess than 0.5 %Long-term Drift (Non-stability)Less than 2 % per yearNon-linearityLess than 1 % (up to 4000 µmol m-2 s-1)Response TimeLess than 1 msField of View180°Spectral Range400 to 750 nm ± 5 nm (wavelengths where response is greater than 50 %)Directional (Cosine) Response± 2 % at 45° zenith angle, ± 5 % at 75° zenith angleAzimuth ErrorLess than 0.5 %Tilt ErrorLess than 0.5 %Temperature Response-0.11 ± 0.04 % per CUncertainty in Daily TotalLess than 5 %HousingAnodized aluminum body with acrylic diffuserIP RatingIP68Operating Environment-40 to 70 C; 0 to 100 % relative humidity; can be submerged in water up to depths of 30 mMeter Dimensions126 mm length, 70 mm width, 24 mm heightSensor Dimensions30.5 mm diameter, 37 mm heightMass (with 5 m of cable)140 gCable2 m of two conductor, shielded, twisted-pair wire; additional cable available; TPR jacketWarranty4 years against defects in materials and workmanshipManufacturedMade in the USA