BS EN 61672 clearly sets out the requirements for Class 1 and Class 2 Sound Level Meters in terms of their specifications and the requirements for Pattern Evaluation (Type Testing).
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We’ve added a new Day/Week/Month View to Live Leq. This enables you to display a day, a few days, a week or a months data really quickly. You can also download the graph and/or a csv of the graph data. We hope this is going to help you create weekly, daily or monthly reports really quickly. We plan to add this feature to Live PM10 and Live PPV in due course.
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The Rion NL-52 is exceptionally well-suited to long-term unattended noise measurements. No other sound level meter matches it’s combination of reliability, low power, a single 130 dB range and pre-polarised microphone. A proper PTB Type-Tested IEC 61672 Class 1 sound level meter (tested with and without the WS-15 outdoor microphone protection). With data stored as csv files onto a memory card there’s no requirement for download leads or proprietary software to get your data. There are many good reasons why the Rion NL-52 has become the industry standard for long-term unattended noise monitoring.
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