Industry News

Machinery noise can provide useful information about operating conditions while also affecting the surrounding work environment. This guide explains how to use a sound level meter to assess noise from motors, fans, pumps, compressors, and other industrial equipment, including instrument setup, measurement-point selection, test procedures, data analysis, and key precautions.

Noise is a common physical factor in industrial environments. Sound level meters enable manufacturers to measure machinery, production-line, and workplace sound pressure levels, identify abnormal changes, support equipment maintenance, and provide data for workplace noise assessment and improvement. This article explains key industrial applications, measurement methods, and practical considerations.

A non-contact voltage tester allows electricians to quickly identify the possible presence of AC voltage without directly contacting an exposed conductor. It is useful for checking outlets, power cords, distribution panels, switches, and wiring during preliminary fault diagnosis. This guide explains a practical field-testing workflow and the key factors that can affect detection, including sensitivity, distance, shielding, environmental interference, and CAT rating.

A non-contact voltage tester can provide a quick preliminary indication of AC voltage around insulated conductors, circuit breakers, and terminal areas in an electrical panel without contacting bare conductors. This guide explains the recommended inspection procedure, suitable test locations, tester selection, common causes of false indications, and important safety limitations.

A non-contact voltage tester can sense the electric field around an energized AC conductor without removing insulation, making it useful for preliminary wire-break troubleshooting. This guide explains the detection principle, step-by-step procedure, factors that affect results, and the voltage range, sensitivity settings, and alarm features to consider when selecting an NCV tester for this application.

A non-contact voltage tester can provide a preliminary indication of whether an AC power cord is energized without removing insulation or touching the conductor. This article explains how to prepare the tester, perform the test correctly, interpret alarms, avoid common misjudgments, and understand why the absence of an alarm does not by itself prove that a circuit is de-energized.

A non-contact voltage tester can quickly detect the presence of an AC electric field around a wall outlet without contacting exposed conductors. This guide explains how to verify the tester, check individual outlet slots, interpret indications, identify common causes of false readings, and understand why a “no voltage detected” indication alone does not confirm a safe de-energized condition.