Measuring luminaires in the field varies greatly from the control of testing in a laboratory. In this guide, you’ll learn more about the factors that can cause differences between calculated and measured illuminance and luminance values of outdoor high intensity discharge (HID) and low pressure sodium (LPS) lamps and luminaires.
Page count: 14 pages
Publisher: Illuminating Engineering Society (2023)
SKU: ANSI/IES LM-61-20(R2023)
- 1.0 Introduction and Scope
3.0 General Considerations
4.0 Additional Reading
Illuminating Engineering Society. ANSI/IES LM-61-20(R2023), Approved Method: Identifying Operating Factors for Installed High Intensity Discharge Luminaires. New York: IES; 2023.