appLonterm
Standard Long-Term Noise Monitors

The ANV Measurement Systems Standard Long-Term Noise Kits based on Rion NL-31 (Class 1) are very widely used for baseline noise surveys and construction noise monitoring. This simple and economic system is all that's required for many jobs. Reliable, easy to use and quick & easy to download meters with gel-cell batteries in a weather-resistant case with the weather protected microphone on the end of a practical and robust extension cable. The mounting options for the microphone are really simple and practical - you can use the standard tripod thread or mount the microphone assembly on a 25mm outer diameter pole.

These outdoor kits are site-proven. Some have been used for years at a time on building and demolition sites without failures. They are also widely used for windfarm baseline surveys and have successfully survived some of the harshest weather conditions to be found in the UK.

  • Rion NL-31 (Class 1)/21 (Class 2) Integrating Logging Sound Level Meter
  • Rion WS-03 Outdoor Microphone Protection
  • Can be used with Rion NL-32 (Class 1)/NL-22 (Class 2) and NX-22J if audio recording is required
  • Remote control and download options (RCDS) also available
  • Weather Resistant and Lockable Case for Sound Level Meter
  • Gel-Cell Batteries & Charger Providing 10 days' Continuous Use in Standard format although additional batteries can optionally be added for longer battery life;
  • Microphone Extension Cable (2m, 5m, 10m lengths available off the shelf and 30m, 50m and 100m lengths can be ordered);
  • Mains and solar powered options available;
  • Flexible mounting options for the microphone - standard tripod thread or mounting the microphone assembly on a 25mm outer diameter pole;
  • Measures Leq, Lmax, LAmin SEL, up to 5 statistical noise indices (LN) and instantaneous sound pressure level
  • Stores up to 99,999 sets of data (LAeq, LAmax, 5LNs etc)
  • Stores up to 200 hours of 1 second LAeq or 100ms samples
  • The word ‘'Store' flashes on the screen once a second when the meter is logging data
  • Data stored on to compact flash cards as csv text files which can be read directly by spreadsheet programmes (no requirement for proprietary download programs, download leads or dongles)

Rion WS-03 Outdoor Protection for Rion Microphones
The Rion WS-03 Outdoor Microphone Protection System is practical, simple and effective, providing all the protection that a Rion microphone and pre-amplifier need against the elements. The WS-03 is t... view product details

Enhanced Long-Term Noise Monitors
ANV Measurement Systems Enhanced Long-Term Noise Kits based on Rion NL-31 (Class 1) are very widely used for baseline noise surveys. The weather-protected microphone is mounted on a stainless steel... view product details

Long-Term Noise Monitors with Audio Recording
The next best thing to a long-term attended survey is a long-term unattended noise survey with audio recording. This enables you to measure the noise levels over an extended period of time cost-effec... view product details

Rion NA-28 Based Systems
If you need to log octave and/or third octave bands (LAeq, LAmax, Lmin, SEL and LN%) then you need an NA-28 Based Long-Term Noise Monitoring System. The NA-28 , Rion's top of the range meter, offe... view product details

Rion WS-15 Outdoor Protection for Rion Microphones
The Rion WS-15 Outdoor Microphone Protection System is practical, simple and effective, providing all the protection that the Rion NL-52’s microphone and pre-amplifier need against the elemen... view product details

NL-52 Based Long-Term Noise Monitors
NL-52 based long-term monitors offer cost-effective and upgradeable Class 1 noise data logging. Available as Standard or Enhanced long-term monitor format you can expect at least 10 days data l... view product details