Approved Method: Testing the Calibration of Locking-Type Photoelectric Control Devices Used in Outdoor Applications

Testing the Calibration of Locking-Type Photoelectric Control Devices Used in Outdoor Applications

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ANSI/IES LM-48-20
Document Type: Lighting Measurement and Testing (LM)

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SKU: ANSI/IES LM-48-20 Category: Tag:

Product Description

Approved American National StandardThis document describes a procedure and test equipment by which photoelectric control devices can be tested to obtain accurate, optimally comparable data. The system aspects that need to be understood to calibrate light sensitive control devices used in roadway and outdoor area lighting are covered. Although photo controls are often used in indoor applications, the method of testing the calibration described in this document is limited to photo controls used in outdoor applications. The test procedures described in this document are limited to testing the photometric calibration of the device only. In addition to the guidelines for testing the response of photoelectric control devices, supplemental information is provided for the construction of a test apparatus suitable for such testing.

Page count: 12 pages
Publisher: Illuminating Engineering Society (2020)
SKU: ANSI/IES LM-48-20
ISBN-13: 978-0-87995-213-6

Chapters:

  • 1.0 Introduction and Scope
    2.0 Operating Conditions
    3.0 Test Equipment
    4.0 Test Procedures
    5.0 Test Reports

Citation Format:
Illuminating Engineering Society. ANSI/IES LM-48-20, Approved Method: Testing the Calibration of Locking-Type Photoelectric Control Devices Used in Outdoor Applications. New York: IES; 2020.

CONTENTS

  • 1.0 Introduction and Scope
  • 1.1 Introduction
  • 1.2 Scope
  • 2.0 Operating Conditions
  • 3.0 Test Equipment
  • 3.1 General Objective
  • 3.2 Accuracy
  • 3.3 Varying Levels
  • 3.4 Field of View
  • 3.5 Operating Indication
  • 3.6 Color of Light Source
  • 3.7 Measuring Operating Level
  • 3.8 Line Voltage Adjustment
  • 3.9 Load Current
  • 3.10 Ambient Temperature
  • 4.0 Test Procedures
  • 4.1 Calibration
  • 4.2 Cell Conditioning
  • 4.3 Position of Device
  • 4.4 Load
  • 4.5 Energize
  • 4.6 Determining Turn-On and Turn-Off Levels
  • 4.7 Temperature Range
  • 5.0 Test Reports
  • 5.1 Control Description
  • Annex A – Suggested Apparatus for Testing the Calibration of Locking-Type
    Photoelectric Control Devices Used in Outdoor Applications
  • A.1 General
  • A.2 Design and Exceptions
  • A.3 Drawings