Light Meters

Light has three principal characteristics that affect plant growth: quantity, quality, and duration. Light quantity refers to the intensity or concentration of sunlight. Light quality refers to the color or wavelength reaching the plant surface. Light duration or photoperiod refers to the amount of time that a plant is exposed to sunlight.

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Measuring Light Brochure

		Field Scout Red/Far Red Meter New for 2008! Plants use the Red/Far Red light ratio to determine how crowded they are, and grow tall or full accordingly.

		Field Scout Quantum Light Meter Quantum sensors measure light energy at the specific wavelengths plants actually use for photosynthesis. Start taking more meaningful light level measurements yourself with a low-cost quantum meter.

		Field Scout UV Meter Monitor critical UV rays. This meter measures the UV radiation between 250 and 400 nanometers, and is measured in µmol m-2 s-1 (micromoles of photons per square meter second).

		Field Scout Foot-Candle Meter Measure light level in Fc or LUX over three ranges

		Field Scout External Light Sensor Meter This light meter can read any of Spectrum’s light sensors, which come with 6ft/2m cables.

		Greenhouse Weather Tracker Measure your plants' most important inputs: light exposure and temperature. Also tracks degree days and chill hour data.

		Multi-Sensor Quantum Light Meter Quantum sensors measure light energy at the specific wavelengths plants actually use for photosynthesis. Gather spatial average PAR readings to measure how much light reaches your plant.

Light Meters

Field Scout Red/Far Red Meter

Field Scout Quantum Light Meter

Field Scout UV Meter

Field Scout Foot-Candle Meter

Field Scout External Light Sensor Meter

Greenhouse Weather Tracker

Multi-Sensor Quantum Light Meter