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UL 1598C - Light-Emitting Diode (LED) Retrofit Luminaire Conversion Kits
September 8, 2023 - ULSE

01598c-000000-000000 1 Scope 1.1 These requirements apply to light-emitting diode (LED) retrofit kits that are intended to retrofit existing light sources or other components in previously installed luminaires that already comply with one of the standards in 3. 1.2 These kits are intended...

ASTM E2481-12(2023) - Standard Test Method for Hot Spot Protection Testing of Photovoltaic Modules
August 1, 2023 - ASTM International

4.1 The design of a photovoltaic module or system intended to provide safe conversion of the sun's radiant energy into useful electricity must take into consideration the possibility of partial shadowing of the module(s) during operation. This test method describes a procedure for verifying that...

ASTM E3398-23 - Standard Guide for Digital Neutron Radiography
July 1, 2023 - ASTM International

1.1 This guide covers the evaluation, qualification, and quantification of digital neutron images. These images can be acquired by many methods, including: neutron sensitive imaging plates (Computed Radiography - CR), Digital Detector Arrays - DDA's (amorphous silicon, CMOS, CCD, etc.),...

UL 962A - Furniture Power Distribution Units
July 13, 2023 - ULSE

00962a-000000-000000 1 Scope 1.1 These requirements cover indoor use cord and plug connected of permanently connected, furniture power distribution units (FPDU) rated 250 V AC or less and 20 Amperes or less. An FPDU may provide one or more receptacle outlets, inclusive of one current tap integral...

UL 1363 - Relocatable Power Taps
July 13, 2023 - ULSE

013630-000000-000000 1 Scope 1.1 These requirements cover indoor use cord and plug connected, relocatable power taps (RPT) rated 250 V AC or less and 20 Amperes or less. A RPT may include an integral Class 2 power supply with an integral lead and/or connector(s) output. In accordance with the...

ASTM E388-04(2023) - Standard Test Method for Wavelength Accuracy and Spectral Bandwidth of Fluorescence Spectrometers
January 1, 2023 - ASTM International

1.1 This test method covers the testing of the spectral bandwidth and wavelength accuracy of fluorescence spectrometers that use a monochromator for emission wavelength selection and photomultiplier tube detection. This test method can be applied to instruments that use multi-element detectors,...

ASTM E1840-96(2022) - Standard Guide for Raman Shift Standards for Spectrometer Calibration
December 15, 2022 - ASTM International

4.1 Wavenumber calibration is an important part of Raman analysis. The calibration of a Raman spectrometer is performed or checked frequently in the course of normal operation and even more often when working at high resolution. To date, the most common source of wavenumber values is either...

UL 1557 - Electrically Isolated Semiconductor Devices
December 6, 2022 - ULSE

015570-000000-000000 1 Scope 1.1 These requirements apply to semiconductor devices of the isolated-mounting type - thyristors, transistors, diodes, and the like, and hybrid modules consisting of combinations of these devices. 1.2 The term isolation, as used in this standard, refers to the...

ASTM E3029-15(2023) - Standard Practice for Determining Relative Spectral Correction Factors for Emission Signal of Fluorescence Spectrometers
January 1, 2023 - ASTM International

3.1 Calibration of the responsivity of the detection system for emission (EM) as a function of EM wavelength (?EM), also referred to as spectral correction of emission, is necessary for successful quantification when intensity ratios at different EM wavelengths are being compared or when the true...

ASTM D8488-22 - Standard Test Method for Determination of Hydrogen Sulfide (H 2 S) in Natural Gas by Tunable Diode Laser Spectroscopy (TDLAS)
November 1, 2022 - ASTM International

1.1 This test method is for the online determination of hydrogen sulfide (H2S) in natural gas using tunable diode laser absorption spectroscopy (TDLAS) analyzers also known as a "TDL analyzers." The particular wavelength for H2S measurement varies by manufacturer, typically between 1000 and...

ASTM E431-96(2022) - Standard Guide to Interpretation of Radiographs of Semiconductors and Related Devices
October 1, 2022 - ASTM International

1.1 This guide provides illustrations of radiographs of semiconductors and related devices. Low powered transistors (through the TO-11 case configuration), diodes, low-power rectifiers, power devices, and integrated circuits are illustrated with common assembly features. Particular areas of...

ASTM E1455-17(2022) - Standard Practice for Obtaining Colorimetric Data from a Visual Display Unit Using Tristimulus Colorimeters
June 1, 2022 - ASTM International

5.1 This practice may be applied when tristimulus colorimeters are used to measure the colors produced on self-luminous video display devices such as CRTs and flat-panel displays, including electroluminescent (EL) panels, light emitting diodes (LEDs) field emission displays (FEDs), and...

ASTM D8446-22 - Standard Test Method for Water Vapor Content in Compressed Air Using Electronic Moisture Analyzers
June 1, 2022 - ASTM International

5.1 Water vapor is ubiquitous and a basic contaminant in compressed air. It cannot be eliminated but shall be controlled. Knowledge of the vapor content of compressed air is important for industrial processes to ensure that compressors that generate compressed air are functioning properly and...

ASTM F3095-17a(2022) - Standard Practice for Laser Technologies for Direct Measurement of Cross Sectional Shape of Pipeline and Conduit by Rotating Laser Diodes and CCTV Camera System
June 1, 2022 - ASTM International

1.1 This practice covers the procedure for the post installation verification and acceptance of buried pipe deformation using a visible rotating laser light diode(s), a pipeline and conduit inspection analog or digital CCTV camera system and image processing software. The combination CCTV...

ASTM D7904-21 - Standard Test Method for Determination of Water Vapor (Moisture Concentration) in Natural Gas by Tunable Diode Laser Spectroscopy (TDLAS)
November 1, 2021 - ASTM International

1.1 This test method covers online determination of vapor phase moisture concentration in natural gas using a tunable diode laser absorption spectroscopy (TDLAS) analyzer also known as a "TDL analyzer." The particular wavelength for moisture measurement varies by manufacturer; typically...

J2650_202104 - Performance Requirements for Road Illumination Devices Using Light Emitting Diode (LED) Sources
April 14, 2021 - SAE International

This SAE Recommended Practice is intended as a guide toward standard practice and is subject to change to keep pace with experience and technical advances. This document establishes additional performance requirements specifically for road illumination devices using light emitting diode...

MIL-PRF-19500/576 - SEMICONDUCTOR DEVICE, DIODE, SILICON, HIGH VOLTAGE POWER RECTIFIER, FAST RECOVERY, TYPES 1N6520 THROUGH 1N6527, JAN, JANTX, JANTXV, AND JANS
February 25, 2021 - NPFC

Scope. This specification covers the performance requirements for silicon, high voltage, fast recovery power rectifier diodes. Four levels of product assurance are provided for each device as specified in MIL-PRF-19500.

MIL-PRF-19500/577 - SEMICONDUCTOR DEVICE, DIODE, SILICON, POWER RECTIFIER, FAST RECOVERY, HIGH VOLTAGE, AXIAL LEAD, TYPES 1N6528 THROUGH 1N6535, JAN, JANTX, JANTXV, AND JANS
March 8, 2021 - NPFC

Scope. This specification covers the performance requirements for silicon, high voltage, fast recovery power rectifier diodes. Four levels of product assurance are provided for each device as specified in MIL-PRF-19500.

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