Industry News

If you've ever shopped for a noise measurement instrument, you've probably run into the same fork in the road: should you buy a Class 1 sound level meter or will a Class 2 sound level meter do the job? The answer isn't one-size-fits-all — it depends on your accuracy requirements, your regulatory obligations, and what you're actually trying to measure. This guide breaks down the Class 1 vs Class 2 sound level meter debate in plain terms, then matches each option to real hzaihua devices so you can walk away knowing exactly what to buy.

Picking the wrong sensor doesn't just waste a budget line — it quietly corrupts every acoustic measurement built on top of it. A measurement microphone comparison is the fastest way to avoid that mistake, because free-field, pressure-field, and infrasound microphones are built for very different jobs, and the specs that matter (sensitivity, dynamic range, frequency response) shift depending on what you're measuring.

An unusual hum, a rattling panel, a bearing that "just doesn't sound right" — these are often the first warning signs that a machine is heading toward failure. The key to catching the problem early lies in understanding how vibration frequency is measured, since frequency is measured in Hertz (Hz), meaning the number of vibration cycles completed every second. This article breaks down the measurement process step by step, and introduces the tool that makes it simple and accurate: the YT3001B vibration meter.

Knowing how to measure noise level correctly isn't just a technical detail — it protects hearing, keeps workplaces compliant, and helps engineers make real decisions about a space. Yet most people either guess with a phone app or misread the numbers on a real meter. This guide walks through the fundamentals, the step-by-step method, and the equipment that actually delivers accurate, defensible results.

Hidden compressed air and gas leaks quietly drain thousands of dollars from industrial facilities every year — and most go undetected until a utility bill or a safety inspection reveals the damage. That's where an acoustic imaging camera comes in. This guide breaks down exactly what the technology is, how it works, and how a modern device like the YT2001 acoustic imager turns invisible sound into an instant, actionable leak map.

If a motor, pump, or compressor on your factory floor suddenly fails, the repair bill is rarely the worst part — it's the downtime. That's why so many engineers and maintenance teams start their search with one simple question: what is the best vibration meter for catching problems before they turn into breakdowns? This review breaks down what actually matters when choosing a vibration meter, and introduces the tool we recommend for accuracy, versatility, and value.