Apogee Quantum Meter, Separate Probe

Apogee quantum sensors measure photosynthetically active radiation. The MQ-200 has a handheld meter to display and store measurements with a separate sensor head connected by a lead. The sensor head features a fully potted, domed-shaped design making it fully weatherproof, waterproof and self-cleaning. The head can be held by hand, mounted to a leveling plate, or attached to an optional sensor wand for taking measurements in hard to reach places. Photosynthetically active radiation (PAR), or photosynthetic photon flus (PPF), is the wavelength range from 400 to 700 nanometers and is strongly correlated with plant growth. Gardeners, greenhouse managers, growth chamber users and salt-water aquarists measure PAR to ensure optimal specimen health.

Other Details
Cosine Response: 45° zenith angle: ± 1%, 75° zenith angle: ± 5%
Spectral Range: 409 to 659nm
Accuracy: ± 5%
Uniformity: ± 3%
Repeatability: ± 1%
Output: Integrated meter, 0 to 2999 µmol m-2 s-1
Responsivity: N/A
Calibration Factor: N/A
Electric or Sun Calibration: Electric and Sun
Response Time: Less than 1 second
Field of View: 180°
Long-Term Drift: Less than 2% per year
Number of Sensors: 1
Length of Sensor Bar: N/A
Power Requirement: 3 V coin cell battery (included)
Operating Environment: 0 to 50° C
Sensor Submersible: Sensor: Yes, Meter: No
Mass: 180 g
Warranty: 1 year