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831-LOWN

Product catalog summary

Overview
The document describes the Model 831 sound level meter paired with the 378A04 low noise microphone and preamplifier, designed for low noise level measurements. This system is portable, battery-powered, and does not require an external power supply. It operates within a frequency range of 10 Hz to 16 kHz and is suitable for applications such as product testing, environmental noise monitoring, and research and development.

Key Features

Measures to 6 dB A-weighted
Highly portable and intuitive to use
Low power consumption (4 mA ICP)
Single channel operation

Specifications

Acoustic Sensitivity: 450 mV/Pa
Frequency Range: 10 to 16,000 Hz
Inherent Noise: Less than 6.5 dB re 20 μPa
Operating Temperature: 14 °F to 176 °F (-10 °C to 80 °C)
Operating Humidity: 0 to 99% relative humidity, non-condensing
Maximum Sound Pressure: 130 dB re 20 μPa peak

Included Items

Model 831 Sound Level Meter
378A04 Low noise ICP microphone and preamplifier
Accessory kit and adapters
BNC cable and connectors

Software

SWW-DNA Software for evaluation and reporting
Instrument driver for control and data translation

Compliance and Certification

ISO 9001:2000 Certified
CE Compliance

Ordering Information

831-LOWN: Complete low noise system
831-LOWN-UPG: Upgrade option for existing Model 831

Optional Accessories

CAL200 Class 1 acoustic calibrator
PRM831 preamplifiers with different microphones
Tripod for mounting preamplifier

Catalog excerpts

Low Noise Measurement with Model 831 (831-LOWN) Low Noise Level Measurement Measure less than 6.5 dBA with a handheld, portable system using the Model 831 Highlights n No external power supply required 10 Hz to 16 kHz frequency range Highly portable Single channel Product testing Environmental noise Easily make measurements to 6 dB A-weighted using the Model 831 sound level meter paired with the 378A04 low noise microphone and preamplifier. Due to the innovative design of the 378A04 which uses a prepolarized microphone and ICP (constant current) interface, the combination produces a highly portable system that is battery powered and intuitive to use. Larson Davis

Open the catalog to page 1

Low Noise Measurement with Model 831 (831-LOWN) 378A04 Specifications Ordering Information El ®LARSON DAVIS A PCB PIEZOTRONICS DIV. 3425 Walden Avenue, Depew, NY 14043-2495 USA Phone 716-926-8243 Toll-Free in USA 888-258-3222 Fax 716-926-8215 E-mail [email protected] Web Site www.larsondavis.com ISO 9001:2000 CERTIFIED © 2016 PCB Group, Inc. In the interest of constant product improvement, specifications are subject to change without notice. PCB, and ICP are registered trademarks of PCB Group Inc., SoundTrack LXT, Spark and Blaze are registered trademarks of PCB Piezotronics, Inc. HV Manager...

Open the catalog to page 2

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