Spartan Series Firearm Noise Sound Level Meter

Firearms Acoustic Analysis | Model 821IH-QPR

Many firearm examiners are tasked with determining whether installation of a suppressor on a firearm results in a “perceptible” reduction of the sound pressure level of a gun. The Larson Davis Spartan 821IH-QPR provides this functionality utilizing an easy-to use handheld platform. Included BLE technology allows for easy measurement control using the LD Atlas mobile app or included software. Meters may also be connected via USB-C.

With the included ¼” prepolarized pressure microphone, Spartan 821IH-QPR is capable of reading levels up to 183 dB, easily capturing levels typically associated with gunfire testing. Included G4 LD Utility software provides automatic wireless or USB data download, and convenient data storage options. View tabular data, visualize results on a graph, create custom reports, and export data to a variety of formats.

Highlights

  • Measure up to 183 dB
  • Class 1 Sound Level Meter
  • 48 kHz sampling rate
  • Simple setup for gunfire testing applications
  • Easy-to-navigate, responsive, touch display

Applications

Measure up to 183 dB
Class 1 Sound Level Meter
48 kHz sampling rate
Simple setup for gunfire testing applications
Easy-to-navigate, responsive, touch display

Standards

Acoustic ANSI S1.4-2014 Class 1 IEC 61672-1:2013 Class 1
Noise Dosimetry ANSI S1.25-1991 IEC 61252:2017
Safety Directive 2014/35/EU IEC 61010-1:2010 RoHS Directive 2011/65/EU
Approvals CE, RoHS, WEEE

Measurements

Dynamic Range (A-weighted typical) 61 to 183 dB
Peak Dynamic Range (Z-weighted typical) 103 to 186 dB
Time Weightings Fast, Slow, & Impulse
Frequency Weightings A, C, & Z
Data Storage (micro SD card) 8 GB standard Up to 256 GB
Data Logging Time history: 1 s to 1 h Measurement History: 1 min to 6 h
Metrics Leq, Lmax, Lmin, Lpeak, Ln (6 values), Time Above

Accessories

Microphone 377A12
Preamplifier PRM821
Software G4 LD Utility
1/4” Microphone Adapter ADP043
Charging Cable USB-C (CBL242-03)