Lux Light & PAR Light
Lux Light General Description
The ALTA® Wireless Lux Light Meter measures the intensity of light from 0?82,000 lux (luminescence/unit area).
Key Features
Measures the amount of light present
Range: 0?82,000 lux
Resolution: 0.01 lux
Highly sensitive photo-diode
Configurable thresholds for critical condition monitoring
Principles of Operation
The ALTA Wireless Lux Light Meter uses a highly sensitive photo-diode to detect and measure the intensity of light around the device. The sensor reports this data on a user-configurable time interval or Heartbeat. On every Heartbeat, the current measurement is then sent to the gateway, making the data available in iMonnit or another approved data service.
Lux Light General Description
The ALTA® Wireless PAR (Photosynthetically Active Radiation) Light Meter monitors the ideal light wavelength plants need for photosynthesis. It monitors light presence or absence, measures light intensity, and records daily saturation levels that affect plant health and growth.
Key Features
Measures Photosynthetic Photon Flux Density (PPFD) in µmol/m2/s
Range: 0 to 4000 µmol/m^2/s
Resolution: 0.1 µmol/m^2/s
Accuracy: +/- 6 %
Produces a Daily Light Integral (DLI)
Configurable thresholds for critical condition monitoring
Principles of Operation
The ALTA Wireless PAR Light Meter uses a blue-enhanced silicon photodiode to measure the specific wavelengths of light that plants need for photosynthesis based on a user-configurable time interval or Heartbeat. The PAR Light Meter measures Photosynthetic Photon Flux Density (PPFD) in µmol/m2/s. PPFD is the amount of PAR light (photons) that arrive at the plant's surface each second. The PPFD measurement is integrated throughout the day to produce the Daily Light Integral (DLI) in mol/m2/day.
The PAR Light Meter resets the DLI accumulation at a customer-configurable time of day. On every Heartbeat, the meter's measurements are sent to the gateway, making the data available in iMonnit or another approved data service.
Features of Monnit ALTA Sensors
Wireless range of 2,000+ feet through 18+ walls1
Frequency-Hopping Spread Spectrum (FHSS)
Best-in-class interference immunity
Best-in-class power management for longer battery life2
Encrypt-RF® Security (Diffie-Hellman Key Exchange + Advanced Encryption Standard (AES)-128 Cipher Block Chaining (CBC) for sensor data messages)
Sensor logs 2000 to 4000 readings if the gateway connection is lost (non-volatile flash, persists through power cycling):
10-minute Heartbeats = ~ 22 days
2-hour Heartbeats = ~ 266 days
Automatic over-the-air updates to sensor firmware (future-proof)
Free iMonnit Basic Online Wireless Sensor Monitoring and Notification System to configure sensors, view data, and send alerts via SMS text, email, and voice call
1 Actual range may vary depending on the environment and gateway.
2 Battery life is determined by the sensor reporting frequency and other variables. Other power options are also available
