Spectrum Technologies Lightscout DLI 100 Manuals

DLI 100 LIGHT METER Catalog # 3405 User manual 2 Thank you for purchasing a LightScout DLI 100 Light Meter. Please read this manual thoroughly before using your instrument. The DLI 100 accurately measures the PAR light that falls on it over a 24 hour period (the Daily Light Integral, or DLI), giving you the ability to match a plant's light requirements with the actual light con- ditions at that location. • Simple, one button operation • An affordable, first step in measuring light • Measure PAR light (Photosynthetically Active Radiation - the range between 400 and 700 nm) • With the push of a button, the meter runs for 24 hours and cal- culates 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 • 3V CR2032 Battery included - approximate battery life: 60 DLI calculations For support, or to place an order, call: Spectrum Technologies, Inc 12360 S. Industrial Dr. East Plainfield, IL 60585 800-248-8873 or 815-436-4440 www.specmeters.com e-mail: [email protected] Quick Start 3 Where to Measure? 4 Using the DLI 100 5 Reading the Display 6 Light Intensity 8 Cumulative Light (DLI) 10 Replacing the Battery 11 Warranty 12 CE Declaration of Conformity 12 Contents 3 1. Decide where you want to measure The DLI 100 comes as a set of three units so you can compare the amount of light received in multiple places on the same day. Page 4 2. Start measuring Press the button on the shoulder of each DLI 100. The LEDs will light upward, and will blink every 4 seconds to show the current light intensity. Read the value from the right side of the LEDs. Pages 5-7 3. Wait 24 hours The DLI 100 will sum the light measurements for 24 hours to compute the Daily Light Integral (DLI). 4. Read the Daily Light Integral (DLI) After 24 hours the DLI 100 will blink every second for the next hour to show the DLI value. Use the num- bers to the left of the LEDs. If the display is dark, press the button to wake it and see the value for 10 seconds. Pages 5-7 5. Act on what you’ve learned If you’ve learned that your plants aren’t getting enough light, what are you going to do to change that? Pages 8-11 6. Repeat Choose another area and repeat the process for maximum benefit. Quick Start Important: Your mother was right. Don’t run with scissors, and because of the spike on the DLI 100, be careful with it as well. 4 The DLI 100 comes as a set of three units so you can compare the amount of light received in multiple places, without the uncertainty caused by environmental differences across multiple days. Use a “Control” Use two of your DLI 100s to measure two locations of primary interest—on a greenhouse bench, or on a shaded green or tee box at a golf course. Use the third as a “control” - let it receive the maximum light, either outside your greenhouse, or in full sun, far from the trees. In a Greenhouse Place DLI 100s where you can compare light levels and DLI (Daily Light Integral) with and without hanging plants and shades. Use pots with soil or media to hold the DLI 100 upright. Place the third DLI 100 outside to measure transmission loss through the structure. Shaded Tees and Greens Use the DLI 100 to compare the light received by healthy and stressed areas of tees and greens. By placing one unit in the stressed area, one in a healthy area, and the third nearby with full sun, areas of destructive shade can be documented, and the minimum light level necessary can be determined. In the Crop Canopy To measure the incident light and/or DLI at, in, or below the crop canopy, secure the DLI 100 at the proper location and height. For low plants, this can be as simple as inserting the spike into the ground or into a container filled with soil or media. For taller crops, set a plastic or metal pipe into the ground, and slip the DLI 100 spike into the top to hold it at the desired height. Please consult with your Spectrum representative to discuss expected results as well as additional ways to use your DLI 100 Light Meter. Where to Measure?