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

$60.00

Member Price: 40$

ANSI/IES LM-35-20 (R2023)
Document Type: Lighting Measurement and Testing (LM)

Available as a downloadable secure PDF only.

To stay current with all IES standards, we recommend subscribing to the The Lighting Library as an Individual or through your company as a Sustaining Member.

In stock

SKU: ANSI/IES LM-35-20 (R2023) Category:

Product Description

Approved American National StandardWith this guide, you’ll learn how to promote uniformity in the measuring and reporting of the optical performance of floodlights and similar luminaires having a field angle equal to or greater than 10 degrees in any cross section.

 

Page count: 24 pages
Publisher: Illuminating Engineering Society (2023)
SKU: ANSI/IES LM-35-20 (R2023)
ISBN-13: 978-0-87995-350-8

Chapters:

  • 1.0 Introduction and Scope
    2.0 Normative References
    3.0 Nomenclature and Definitions
    4.0 Physical and Environmental Test Conditions
    5.0 Electrical Test Conditions
    6.0 Testing Procedure Requirements
    7.0 Test Report
    8.0 Additional Reading

Citation Format:
Illuminating Engineering Society. ANSI/IES LM-35-20 (R2023), Approved Method: Photometric Testing of Floodlights Using High Intensity Discharge or Incandescent Filament Lamps. New York: IES; 2023.

CONTENTS

  • 1.0 Introduction and Scope
  • 1.1 Introduction
  • 1.2 Scope
  • 2.0 Normative References
  • 2.1 ANSI/IES LS-1-20
  • 2.2 ANSI/IES LM-45-20
  • 2.3 ANSI/IES LM-51-20
  • 2.4 ANSI/IES LM-54-20
  • 3.0 Nomenclature and Definitions
  • 3.1 units
  • 3.2 auxiliary equipment
  • 4.0 Physical and Environmental Test Conditions
  • 4.1 General
  • 4.2 Temperature
  • 4.3 Airflow
  • 4.4 Stray Light
  • 4.5 Vibration
  • 5.0 Electrical Test Conditions
  • 5.1 Power Supply Requirements
    • 5.1.1 Primary Source Voltage
    • 5.1.2 Power Supply Wave Shape
    • 5.1.3 Power Supply Regulation
  • 5.2 Reference Circuit Requirements
  • 5.3 Measurement Instrument Requirements
    • 5.3.1 Electrical Instruments
  • 6.0 Testing Procedure Requirements
  • 6.1 General Procedure
    • 6.1.1 Goniophotometer
    • 6.1.1.1 G e n e r a l
    • 6.1.1.2 Coordinate Systems
    • 6.1.1.3 Photometric System
    • 6.1.1.4 Repeatability of Light Readings
  • 6.2 Test Distance
  • 6.3 Selection and Preparation of the Equipment for Test
    • 6.3.1 Selection
    • 6.3.2 Mounting
    • 6.3.3 Lamp Orientation
    • 6.3.3.1 Discharge Lamps
    • 6.3.3.2 Incandescent Filament Lamps
    • 6.3.4 Focusing
    • 6.3.5 Cleaning
  • 6.4 Test Lamps
    • 6.4.1 General
    • 6.4.2 Lamp Seasoning
    • 6.4.3 Test Lamp Operation
    • 6.4.3.1 General
    • 6.4.3.2 Incandescent Filament Lamps
    • 6.4.3.3 HID lamps
  • 6.5 Test Methodologies
    • 6.5.1 General
    • 6.5.2 Bare Lamp Measurement
    • 6.5.3 Lamp Photometric Calibration Process
    • 6.5.3.1 Relative Photometry Method
    • 6.5.3.1.1 Vertically Mounted Lamps
    • 6.5.3.1.2 Horizontally Mounted Lamps
    • 6.5.3.2 Absolute Photometry Method
    • 6.5.3.2.1 Method Using Luminous Intensity Standard
    • 6.5.3.2.2 Method Using Luminous Flux Standard
    • 6.5.3.2.3 Method Using Calibrated Photometer
    • 6.5.4 Luminaire Photometry
    • 6.5.4.1 Mounting
    • 6.5.4.2 Angles for Photometric Measurements
    • 6.5.4.2.1 General
    • 6.5.4.2.2 Standard Set of Lateral Data Angles
    • 6.5.4.2.3 Standard Set of Vertical Data Angles
    • 6.5.4.3 Photometric Data Processing
    • 6.5.4.3.1 Stray Light Cancellation
    • 6.5.4.3.2 Symmetry and Averaging of Data
    • 6.5.4.3.3 Zonal Lumens and Total Lumens
    • 6.5.4.3.4 Field Angle
    • 6.5.4.3.5 Field Lumens
    • 6.5.4.3.6 Beam Angle
    • 6.5.4.3.7 Beam Lumens
    • 6.5.4.3.8 Measuring and Recording Spill Light
    • 6.5.4.3.9 Classification of Floodlight Beam Types
    • 6.5.4.3.10 Isocandela Plot
  • 7.0 Test Report
  • 7.1 General
  • 7.2 Test Report Contents
  • 8.0 Additional Reading