Sound Level Meter, Class 2
NL-42

Extremely user friendly Rion's NL-42 sound level meters provide full support for the measurement process.

  • No paper manual is needed
  • Water resistant (except for the microphone)
  • Use of rechargeable batteries
  • Continuous detailed measurements for one month
  • Functionality can be extended by a range of options
Description Specifications

Product Full Description

Extremely user friendly Rion's NL-42 sound level meters provide full support for the measurement process.

- No paper manual is needed
- Water resistant (except for the microphone)
- Use of rechargeable batteries
- Continuous detailed measurements for one month
- Functionality can be extended by a range of options

Measurement functions

Simultaneous measurement of the following items, with selected time weighting and frequency weighting:

Processing (main ch)

Instantaneous sound pressure level: Lp
Equivalent continuous sound pressure level: Leq
Sound exposure level: LE
Maximum sound pressure level: Lmax
Minimum sound pressure level: Lmin
Percentile sound levels: LN (0.1 to 99.9%, 0.1-increment steps, max. 5 values)

Processing (sub ch)

Instantaneous sound pressure level: Lp

In addition to main processing items, one of the following can be selected for simultaneous processing:

C-weighted equivalent continuous sound level: LCeq
C-weighted peak sound level: LCpeak
Z-weighted peak sound level: LZpeak
I-time-weighted equivalent continuous sound level: LAIeq*2
Maximum I-time-weighted equivalent continuous sound level: LAImax*2
The power average of the maximum level of each 5 second interval: LAtm5 (0.1 to 99.9%, 0.1-increment steps, max. 5 values)
The frequency weighting for the additional processing synchronizes with the frequency weighting of the sub-channel, so when the sub-channel has A-weighting, LAtm5 can be selected.
When C-weighting (Z-weighting) is selected, the additional processing LCeq and LCpeak (LZpeak) are selectable.

Microphone

Type

UC-52

Sensitivity level

-33 dB

Measurement range

A-weighting: 25 dB to 138 dB
C-weighting: 33 dB to 138 dB
Z-weighting: 38 dB to 138 dB
C-weighting peak sound level: 55 dB to 141 dB
Z-weighting peak sound level: 60 dB to 141 dB

Full Data Sheet

For access to the full data sheet, go to Rion - NL-42
Information on technical characteristics is based on the latest information available at the time of publication.