This document describes terms used to define instrument capabilities for electrical quantities, angular positioning, optical radiation detectors, airflow, and temperature. In addition, the reader is informed about cautions that needs to be observed when selecting, maintaining, and using measuring instruments in the photometric laboratory while maintaining appropriate levels of uncertainty.

Guide for the Selection, Care, and Use of Electrical Instruments in the Photometric Laboratory

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ANSI/IES LM-28-20
Document Type: Lighting Measurement and Testing (LM)

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SKU: ANSI/IES LM-28-20 Category: Tag:

Product Description

Approved American National StandardThis document describes terms used to define instrument capabilities for electrical quantities, angular positioning, optical radiation detectors, airflow, and temperature. In addition, the reader is informed about cautions that needs to be observed when selecting, maintaining, and using measuring instruments in the photometric laboratory while maintaining appropriate levels of uncertainty.

Page count: 11 pages
Publisher: Illuminating Engineering Society (2020)
SKU: ANSI/IES LM-28-20
ISBN-13: 978-0-87995-194-8

Chapters:

  • 1.0 Introduction and Scope
    2.0 Normative References
    3.0 Definitions and Nomenclature
    4.0 General Instrument Considerations
    5.0 Ambient and Physical Condition Measurements
    6.0 Electrical Measurements
    7.0 Optical Radiation Detectors and Measuring Instruments
    8.0 Computer Interfacing of Photometric Equipment
    9.0 Safety
    10.0 Additional Resources

Citation Format:
Illuminating Engineering Society. ANSI/IES LM-28-20, Approved Method: Guide for the Selection, Care, and Use of Electrical Instruments in the Photometric Laboratory. New York: IES; 2020.

CONTENTS

  • 1.0 Introduction and Scope
  • 1.1 Introduction
  • 1.2 Scope
  • 2.0 Normative References
  • 2.1 ANSI/IES LS-1-20
  • 3.0 Definitions and Nomenclature
  • 4.0 General Instrument Considerations
  • 4.1 Digital vs. Analog Instruments
  • 4.2 Single-Range vs. Multi-range Instruments
  • 4.3 Calibration
  • 4.4 Tolerance Interval
  • 5.0 Ambient and Physical Condition Measurements
  • 5.1 Temperature Measurements
  • 5.2 Air Movement Measurements
  • 5.3 Angular Position Sensing
  • 6.0 Electrical Measurements
  • 6.1 General
  • 6.2 Impedance Limitations
  • 7.0 Optical Radiation Detectors and Measuring Instruments
  • 7.1 General
  • 7.2 Optical Radiation Detectors
  • 7.3 Amplifiers and Logging/Display Devices
  • 7.4 Electrical Filtering
  • 7.5 Linearity of Optical Radiation Measurement
  • 7.6 Cosine Response
  • 7.7 Photopic Response
  • 8.0 Computer Interfacing of Photometric Equipment
  • 9.0 Safety
  • 9.1 General
  • 9.2 Electrical Shock
  • 10.0 Additional Resources
  • Annex A – Analog Instrument Selection and Considerations
  • Annex B – Tolerance Interval vs. Acceptance Interval
  • Annex C – Measurement Errors Due to the Deviation in the System Response from V(λ)
  • Informative References