Light Measurement

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PAR Sensors
Skye PAR Sensors

Product Features
  • Traditionally used in plant growth studies. 
  • Skye PAR Sensors suitable for long term exposure and underwater applications, and splashproof models of the PAR Quantum & PAR Energy suitable for glasshouses, plant growth cabinets, etc.
  • The spectral response has been well researched and documented and is widely accepted as ‘the standard’.
  • The PAR Quantum has an output in micromols.m-2.s-1 and the PAR Energy in watts.m-2.
  • The PAR ‘Special’ has a response which has been tailored to match the light used by a typical green plant and gives an output in micromols.m-2.s-1.

LightScout DLI 100 Light Meter
Spectrum LightScout DLI 100 Light Meter

Product Features
  • Spectrum LightScout DLI 100 Light Meter compare light between three locations, simultaneously
  • Simple, one button operation
  • Displays light intensity levels every 4 seconds for 24 hours
  • An affordable, first step in measuring light
  • Measure PAR light (Photosynthetically Active Radiation)
  • With the push of a button, the meter runs for 24 hours and calculates your Daily Light Integral (DLI)
  • Real-time intensity levels are shown every 4 seconds in µmol·m-2·s-1 (or footcandles)
  • Packaged in sets of 3 light meters, or individually

EMS 7 PAR Meter
S.W. Burrage EMS 7 PAR Meter

Product Features
  • EMS 7 is a portable photo system for the determination of the PAR (photosynthetically active radiation) above and within plant canopies.
  • As such it is very useful in plant physiological and ecological studies.
  • The system consists of two photo sensors: Reference and Sample.
  • The reference sensor is a 40 mm diameter PAR cell which is threaded for a standard tripod and is normally mounted above the canopy to be studied.
  • The reference sensor is linked to the sample box by a cable or a radio link.
  • The sample sensor is a PAR line sensor 850 mm in length which contains 32 cells covered by a diffuser giving a uniform integration over the sensor length.

Decagon LP-80 Ceptometer
Decagon LP-80 Ceptometer

Product Features
  • Decagon LP-80 Ceptometer is a lightweight, portable, linear photosynthetically active radiation (PAR) sensor.
  • It lets you measure canopy PAR interception and calculate leaf area index (LAI) at any location within a plant or forest canopy. 
  • PAR data can be used with other climate data to estimate biomass production without destroying the crop.
  • PAR is also important in determining other canopy processes; such as radiation interception, energy conversion, momentum, gas exchange, precipitation interception, and evapotranspiration.
  • Uses radiation measurements and other parameters to accurately calculate leaf area index (LAI) non-destructively in real time, in the field.

UVA Sensor
Skye UVA Sensor

Product Features
  • Skye UVA Sensor to measure the UVA (315-400nm) parts of sunlight.
  • Components used have been selected for their stability in a UV environment.
  • The bandwidth characteristics are tailored to the ISO standard.

Single Channel Light Sensor â Custom
Skye Single Channel Light Sensor – Custom

Product Features
  • Skye Single Channel Light Sensor – Custom to consider building a single channel light sensor with user specified wavelengths between 400 and 1000nm.  

Spectral Radiometers
Skye Spectral Radiometers

Product Features
  • Skye is pleased to announce the introduction of brand new multi-channel sensors, which have been designed especially for long term installation applications such as on Flux Towers.
  • The new design can be built with up to 4 channels of ‘user choice’ wavelengths from 400 to 2500nm and ‘user choice’ band widths from 5nm upwards.  
  • Internal optical parts can be fitted at the time of ordering to narrow the acceptance angle of the reflected sensor – the standard is a 25º field of view – for those researchers who are looking at very small areas.
  • The new radiometers have dedicated designs for radiance and irradiance measurements.  
  • The irradiance sensor is cosine-corrected.
  • The units are completely sealed against water ingress and meet the IP68 rating.
  • The Sensors have been specially designed so that there are no oriffices and crevices that could be utilised by insects for their homes.

LightScout Red/Far Red Meter
Spectrum LightScout Red/Far Red Meter

Product Features
  • Spectrum LightScout Red/Far Red Meter displays the Red/Far Red ratio on the LCD screen, and with the push of a button, the 660nm and 730nm readings.
  • Plants absorb red light (660–680nm) and reflect far-red light (720–740nm).
  • Knowing red to far-red ratio can help to determine plant spacing and decide when to apply plant growth regulators.
  • Greenhouses with high canopy closure or canopy density may need more applications of plant growth regulators to keep the plants a marketable size.
  • Now includes the Soft-Sided Case, also available separately

LightScout UV Meter
Spectrum LightScout UV Meter

Product Features
  • Spectrum LightScout UV Meter monitor critical UV radiation (250-400 nm) with this handheld meter
  • Determine UV filtering capacity of greenhouse shades and glass barriers
  • Range is 0-200.0 µmol·m-2·s-1 (full sunlight)
  • Can help to detect if user plants are being exposed to high levels of detrimental UV radiation, and to check the effectiveness of UV filtering materials.
  • Measure the quantity of light in the 250-400nm range.
  • Specific meters are also available for individual UV ranges.
  • UV-C light (200-280nm) can kill your plants.
  • UV-B light (280-315nm) is harmful as well and can cause plant color to fade.
  • UV-A light can be subdivided into two bands.
  • The 315-380nm band has no effect on plant growth, while the 380-400nm band begins the range for photosynthesis.)

LightScout Quantum Meters
Spectrum LightScout Quantum Meters

Product Features
  • Spectrum LightScout Quantum Meters measure the light used for plant growth.
  • PAR is a more valuable measurement than foot-candles as it measures only the light used by plants for photosynthesis.
  • Measures photosynthetically active radiation (PAR) from 400 to 700 nm
  • Range of 0 to 2,000 µmol·m-2·s-1
  • Available in a variety of configurations
  • Measuring quantum light can tell user if their plants are getting a sufficient amount of usable light.