Usually you will see two lines radiate from the centre, a solid line and a dotted line. These lines are identified by a letter, which is used with the initial footcandle (fc) table. November 9. We will be bringing you the latest industry news in Industrial Automation, features on new products and manufacturers, helpful Engineering tips and how-to's, as well as exciting company updates. The purpose of the interactive modules is three-fold: to demonstrate the capabilities of lighting design software, encourage designers to design using photometrically sound lighting software tools, and to … LM-79 Test Report. Welcome to ACD Connect! These lines indicate the light distribution and intensity from various angles. Actual measured candela table showing light intensity at various angles. How to understand photometric polar diagrams. If you are working in the lighting industry sooner or later you will come across photometric diagrams and you must know how to interpret them. 2016 10. April 1. December 1. How to understand photometric diagrams.

A series of such lines for various illumination values is called an isolux diagram. January 4. The values up the side show the distance in line with the aiming direction of the floodlight. The graphical plot represents a section view looking at the luminaire in elevation. The lower right quadrant of the graph represents the Front - Downlight components (Street Side); the lower left quadrant of the graph represents the Back- Downlight components (House Side) and the upper hemispherical section represents the uplight component. A line through all points on a surface where the illumination is the same; called an isofootcandle line if the illumination is expressed in footcandles. LM-79 Test Report. The number 3, for instance, represents 3 x 40, or 120, feet from a 40-foot mounting height.

The purpose of the interactive modules is three-fold: to demonstrate the capabilities of lighting design software, encourage designers to design using photometrically sound lighting software tools, and to … Figure 1 Isofootcandle Distribution Curves show the illuminance for specified footcandle values at various distances.

Isofootcandle chart provides quick visual representation of distribution .

How to understand photometric diagrams. 25 for a 50 Watt, 12 degree MR16 Lamp. September 1. EXAMPLE MAXIMUM CANDELA POINT and lateral angle line is included here to illustrate how illumination levels at a point correlate the Isofootcandle Plot information shown. These plots are scalable as they are represented in mounting height increments. Understanding Photometric Reports for SSL Products Building Technologies Program 1 Section 14.0 of LM-79-08 also includes a list of “typical items reported.” ˚ 2 NERG STA for SSL program details available at ww.ssl.energy.go v/energy_star.html. How To Use Photometric Data by Alfred R. Borden IV, IALD (Reprinted with permission of Architectural Lighting Magazine) The best way to decide which type of luminaire you want for a particular project is to get one and look it over.

The isofootcandle plots graphically represent the luminaire's lighting pattern, in illuminance, striking a horizontal surface. 2:10. The e-light learning modules are a self-paced discovery environment. 2017 5. Figure 2 shows a 3D illustration of Isofootcandle Distribution Curve No. Read more Powered by Blogger Theme images by Radius Images. An approximation of pole spacings required to attain a desired uniformity can easily be determined from the information provided. The shape of both lines is usually about the same for most lamps. How to Read A Lighting Diagram | Pass the ARE 5.0 - Duration: 2:10. The solid line indicates the frontal view (C0/180), the dotted line the side view (C90/270).

These curves reflect measurements in ideal conditions with the measuring device normal (90) to the incoming light. The easily read visual reference indicates beam patterns graphically, where other information (such as candela tabulations and isocandela curves) may be less clear. Luminaires & Photometric Data Ch#3 11 04 13 - Duration: 49:18. If you are working in the lighting industry sooner or later you will come across photometric diagrams and you must know how to interpret them.