Apogee Instruments MQ-610 400-750nm ePAR Meter

Laboratory measurements of the newly defined 400-750 nm wavelength (ePAR) have been found to be more photosynthetically active than the traditional 400-700 nm wavelength (PAR). The MQ-610 can accurately measure the distant red photons (700-750 nm) found in many next-generation LED fixtures, the sun, and other light sources that cannot be measured with traditional PAR meters.

Specifications:
- calibration uncertainty ± 5
- measurement range 0 to 4000 µmol m-2 s-1
- measurement repeatability Less than 0.5
- long-term drift (instability) Less than 2% per year
- nonlinearity Less than 1% (up to 4000 µmol m-2 s-1)
- response time Less than 1 ms
- field of view 180°
- spectral range 400 to 750 nm ± 5 nm (wavelengths, where the response is greater than 50 %)
- directional (cosine) response ± 2 % at 45° zenith angle, ± 5 % at 75° zenith angle
- azimuth error Less than 0,5 %
- tilt error Less than 0,5%
- temperature response -0.11 ± 0.04% per C
- uncertainty of daily sum Less than 5%
- housing Anodized aluminium body with acrylic diffuser
- degree of protection IP68
- operating environment -40 to 70 C; Relative humidity 0 to 100%; can be immersed in water up to 30 m
- meter dimensions 126 mm length, 70 mm width, 24 mm height
- sensor dimensions 30.5 mm diameter, 37 mm height
- weight (with 5 m cable) 140 g
- 2 m two-wire shielded twisted pair cable; additional cable available; TPR jacket
- 4-year warranty against defects in materials and workmanship
- made in USA