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Approved Method: Photometric Testing of Indoor Luminaires Using High Intensity Discharge or Incandescent Filament Lamps

Photometric Testing of Indoor Luminaires Using High Intensity Discharge or Incandescent Filament Lamps

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ANSI/IES LM-46-20
Document Type: Lighting Measurement and Testing (LM)

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SKU: ANSI/IES LM-46-20 Category: Tag:

Product Description

Approved American National StandardThis document provides a methodology for obtaining uniform test results under controlled laboratory conditions in measuring the luminous flux and intensity of luminaires with high intensity discharge (HID) lamps, including mercury vapor, high pressure sodium (HPS), and metal halide lamps. Also covered are similar luminaire types employing incandescent lamps, including tungsten-halogen lamps.

Page count: 15 pages
Publisher: Illuminating Engineering Society (2020)
SKU: ANSI/IES LM-46-20
ISBN-13: 978-0-87995-211-2

Chapters:

  • 1.0 Introduction and Scope
    2.0 Selection of Lamps
    3.0 Selection of Luminaires
    4.0 Test Conditions
    5.0 Preparation of Equipment for Test
    6.0 Test Procedure
    7.0 Photometric Measurement
    8.0 Indirect Luminaires
    9.0 Reporting Test Data
    10.0 Use of Computers and the IES Standard Format

 
Citation Format:
Illuminating Engineering Society. ANSI/IES LM-46-20, Approved Method: Photometric Testing of Indoor Luminaires Using High Intensity Discharge or Incandescent Filament Lamps. New York: IES; 2020.

CONTENTS

  • 1.0 Introduction and Scope
  • 1.1 Introduction
  • 1.2 Scope
  • 2.0 Selection of Lamps
  • 3.0 Selection of Luminaires
  • 4.0 Test Conditions
  • 4.1 Extraneous Light
  • 4.2 Ambient Temperature
  • 4.3 Air Movement
  • 4.4 Lamp Seasoning
  • 4.5 Test Lamp Operation
  • 4.6 Test Distance
  • 4.7 Electrical Requirements
    4.7.1 Power Source Voltage Regulation
    4.7.2 Power Source Wave Shape
  • 4.8 Instrumentation
  • 4.9 Goniophotometer
    4.9.1 General
    4.9.2 Goniophotometer Systems
  • 4.10 Photodetectors
  • 5.0 Preparation of Equipment for Test
  • 5.1 Luminaire Positioning on a Goniophotometer – General
    5.1.1 Lamp Calibration
    5.1.2 Luminaire Mounting
    5.1.3 Lamp Orientation
  • 6.0 Test Procedure
  • 6.1 Photometric Calibration
    6.1.1 Relative Method Photometry
    6.1.2 Absolute Method Photometry
  • 7.0 Photometric Measurement
  • 7.1 Angles for Measurement
  • 7.2 Planes for Measurement
  • 8.0 Indirect Luminaires
  • 9.0 Reporting Test Data
  • 10.0 Use of Computers and the IES Standard Format
  • Annex A – Converting Candelas into Lumens Using Zonal Constants
  • Annex B – Sample Indoor Photometric Report
  • Annex C – Sample IES Formatted File
  • Annex D – Sample Luminaire Simulator