Light is an essential element of photosynthesis and overall plant development as it impacts numerous factors including plant form and structure, plant orientation, and reproduction. PAR meter is a sensor for measuring photosynthetic active radiation. It helps determine the amount of light the plants are exposed to.
Preliminary information.
Subject of change without notice.
| Aranet PAR Sensor with Apogee quantum meter | |
| Measurements | Photosynthetically Active Radiation (PAR) |
| Line of Sight Range | 3km/1.9mi |
| Operating environment | Indoor and Outdoor use |
| Transmitter power | 14 dBm |
| Frequency | Depends on base station instructions |
| Measurement repeatability | Less than 0.5 % |
| Long-term Drift | Typically, less than 1 % per year with a 2 % maximum |
| Non-linearity | Less than 1 % (up to 4000 μmol m⁻² s⁻¹) |
| Field of View | 180° |
| Spectral Range | 389 to 692 ± 5 nm |
| Directional (Cosine) response | ± 5 % at 75° zenith angle |
| Data transmission | 1, 2, 5, 10 minutes |
| Data resolution |
1 μmol m⁻² s⁻¹ (PPFD) |
| Data protection | Data encryption |
| Power options | 1 AA Alkaline battery (Zn/Mn02) |
| 1 AA Lithium battery (Li/FeS2) | |
| Alkaline Battery life @20°C / 68°F | Up to 5 years |
| Lithium Battery life @20°C / 68°F | Up to 7 years |
| Operating temperature w Alkaline | -20°C to 55°C (-4°F to 131°F) |
| Operating temperature w Lithium | -35°C to 60°C (-31°F to 140°F) |
| Operating humidity | 0% to 100% PAR meter can be submerged in water up to depths of 30 m (98.4ft) |
| Dimensions | Sensor body – 35mmØ x 120mm (1.4”Ø x 4.7”) |
| PAR meter – 24mmØ x 37mm height (0.9” Ø x 1.5”) | |
| PAR meter bracket – 83.8 mm x 62.1 mm (3.3 ” x 2.4”) | |
| Weight | 580g (20.5oz) w Alkaline battery and PAR meter bracket |
| 572g (20.2oz) w Lithium battery and PAR meter bracket | |
| Construction | Sensor body – ASA Plastic |
| PAR meter – Anodized aluminum body with acrylic diffuser | |
| Protection class | IP68 |
| CE/FCC/IC marking | CE, FCC |
| Included | 1 AA Alkaline battery, string |
| Cable length | 0.2m (0.65ft) |
| Compatible base stations | Aranet PRO (from sw v1.4) |
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