Products and Equipment from Larson Davis, a division of PCB ...

Spartan - Model 730 - Wireless Noise Dosimeter

The SpartanTM Noise Dosimeter Model 730 is designed to make worker noise dose measurements easy and fast. With Spartan, control test setup and measurements directly from the Larson Davis AtlasTM mobile app. All essential tasks can be completed from your iOSTM or AndroidTM device. LD Atlas allows you to monitor remotely without draining your dosimeter battery, ensuring that you’re...

Spartan - Model 730IS - Intrinsically Safe Noise Dosimeter

The Spartan™ Intrinsically Safe Noise Dosimeter Model 730IS is designed to safely make noise exposure measurements, even for workers in explosive environments, such as those found in the petrochemical industry and pharmaceutical manufacturing. The simple noise dosimeter design and intuitive setup make getting worker noise dose measurements easy and fast. With Spartan-IS Intrinsically Safe Noise Dosimeter, control test setup and measurements...

Larson Davis - Model 703 - Personal Noise Dosimeters

Spark - The Spark series are the perfect choice for personal noise exposure sampling in the workplace. Weighing only 7 ounces, they are intrinsically safe data logging dosimeters.

Larson Davis - Model 703+ - Personal Noise Dosimeters

Spark - The Spark series are the perfect choice for personal noise exposure sampling in the workplace. Weighing only 7 ounces, they are intrinsically safe data logging dosimeters.

Larson Davis - Model 704 - Personal Noise Dosimeters

Spark - The Spark series are the perfect choice for personal noise exposure sampling in the workplace. Weighing only 7 ounces, they are intrinsically safe data logging dosimeters.

Larson Davis - Model 705 - Personal Noise Dosimeters

Completely sealed in an extruded metal housing, with no controls or display to tamper with or damage, the basic model Spark 705 is programmed to start automatically and gather noise exposure data unobtrusively, time after time. Capable of storing up to fifty separate tests in a memory that can never be accidentally erased - even with the battery removed - the 705 creates a concise, one-page report with all your compliance data and a clear graphical...

Larson Davis - Model 706 - Personal Noise Dosimeters

Spark 706 is the fully-featured self-contained dosimeter that provides ease-of-use, sleek ergonomic design and full on-board data logging, along with a backlit LCD display and lockable keypad. The 706 delivers over 100 hours of continuous exposure monitoring on two standard AA Alkaline batteries and can store over 30 days of data in its huge 4MB memory. Standing up to three feet from the worker, you can instantly connect the 706RC using infrared...

Larson Davis - Model 705+ - Personal Noise Dosimeters

Spark 705+ has all the features of the 705 PLUS the ability to be controlled, interrogated and downloaded by the 706RC Dosimeter/Remote Controller. This gives you the ultimate combination of tamper-proof wearability and affordability with on-demand display and control functionality. Standing up to three feet from the worker, you can instantly connect the 706RC using infrared remote capability to check results, view data, even stop and start a test!

Larson Davis - Model 706RC - Personal Noise Dosimeters

Spark 706RC gives you all the great features and capabilities of the 706 AND the ability to link up with the other Spark models (except 704) for remote data viewing, dosimeter control, status updates and upload of stored test results. The 706RC not only offers a safe, comfortable distance between the user and the worker being monitored, it can store data from up to fifty other Spark series dosimeters for transport of data and download to a remote...

SoundAdvisor - Model 831C - Sound Level Meter

The SoundAdvisor Model 831C Sound Level Meter is designed to make noise measurement easy. Due to its color display, connectivity, extensive software features and small form factor the SoundAdvisor is an ideal choice for handheld operation. Attended measurements are simplified, with the ability to control and monitor data via any PC or mobile device with a standard web interface. Designed with the acoustic professional in mind, the SoundAdvisor...

Larson Davis - Model 831 - Class 1 Environmental Noise & Building Acoustics Analyzer

This versatile instrument, with high definition display, performs the functions of several instruments. It puts the combined features of a precision Class 1 sound level meter, environmental noise analyzer, personal noise dosimeter, and a real-time frequency analyzer in the palm of your hand. The Larson Davis Model 831 is a fifth generation Larson Davis sound level meter, designed for simple single handed operation, yet is fully featured,...

SoundTrack - Model LxT - Sound Level Meter

Over the years, various types of Sound Level and Octave Band Meters have been used by Industrial Hygienists and Safety Professionals for monitoring workplace noise, most requiring significant operator training and producing varying degrees of effectiveness. At Larson Davis, we believe this is because until now, Sound Level Meters were designed primarily for use by Acoustical Engineers, not for Safety and Health professionals....

SoundExpert - Model LxT - Class 1 Sound Level Meter

The Larson Davis SoundExpert LxT Sound Level Meter is a full-featured meter designed for general product evaluation and noise monitoring applications. SoundExpert LxT comes with a graphic display and a fixed set of firmware options applicable for these applications. It is available as a general hand-held meter or data acquisition tool and also in a short-term noise monitoring kit. The meter expands upon the Larson Davis tradition of delivering...

SoundTrack - Model LxT N/Forcer - Sound Level Meters

For Community Noise Ordinance Enforcement and Nuisance Complaint Response. Portable, compact and simple to use, the Larson Davis LxT N/Forcer Sound Level Meter produces accurate, citation-ready noise data on-the-spot, with its compact portable printer.

SoundTrackLxT - Model LXT1-QPR - Sound Level Meter

Quantitative measurements of sound pressure levels generated by firearms with and without suppression devices and silencers. Many firearm examiners are tasked with determining whether installation of a suppressor or silencer on a firearm results in a “perceptible” reduction of the sound pressure level of a gun. The Larson Davis SoundTrack LxT® provides this functionality utilizing an easy-to-use handheld platform.

Model 831-LOWN - Sound Level Meter for Low Noise Level Measurement

Easily make low noise measurements to 6.5 dB A-weighted using the Model 831-LOWN 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 for measuring low noise levels.

Model 820 - Sound Level Meter

There exists a need to select an instrument that will do just what you need it to do. The 820 was designed with this in mind. The Model 820 is the perfect environmental noise analyzer, maintaining all of the features of the 812 but with added memory, modem capability, daily and exceedance histories.

Model 812 - Sound Level Meter

There exists a need to select an instrument that will do just what you need it to do. The 812 was designed with this in mind. For example, a consultant that works heavily in the industrial hygiene sector will greatly benefit from having the Model 812, a hand held data logging integrating sound level meter and a personal noise dosimeter.

Model System 824 - Sound Level Meter

The System 824 combines sound level meter and real-time analyzer capabilities in one small, rugged package. The instrument covers many important measuring functions in one user-friendly, hand-held design.

Model 720 - Sound Level Meter

The 720 was designed to do just what you need it to do. For example, a consultant that works heavily in the industrial hygiene sector will greatly benefit from having this hand-held data logging integrating sound level meter and, by removing the nose cone and revealing the 1 meter microphone extension cable, a personal noise dosimeter. The capability to add environmental noise monitoring to your portfolio while retaining the IH work should encourage...

SoundAdvisor - Model NMS045 - Permanent, Long-Term Noise Monitoring System

The SoundAdvisor Permanent Noise Monitoring System Model NMS045 is available in a variety of configurations to meet your long-term monitoring needs. Model NMS045 shares many of the same benefits as Model NMS044, from 24/7 connectivity to continuous power capabilities, designed to simplify your testing. Now, the key elements of the portable system are available in...

SoundAdvisor - Model NMS044 - Portable, Short-term Noise Monitoring System

Larson Davis has created a new standard for portable noise monitoring by making the SoundAdvisor Portable System Model NMS044 completely wireless with solar charging and 4G wireless while keeping it truly portable. The SoundAdvisor noise monitor includes everything needed for a noise monitor (powered by SoundAdvisor Model 831C Class 1 sound level meter) that can run...

SoundExpert - Model LxT - Noise Monitoring Kit

In addition to the SoundExpert LxT meter, this kit includes the EPS042 protection case and D-cell battery pack, the EPS2108-2 microphone protection shroud, and EXC010 10 ft. cable. Using D-cell alkaline batteries, allows the noise monitor to be smaller and lighter; avoid the expense of shipping heavy lead acid batteries and the hassle of recharging. You can transport it easily to your site, deploy it, measure data, retrieve your system, download the...

The Larson Davis - Rapid Deployment Noise Monitoring System

NoiseTutor: Continuous monitoring of environmental data in remote areas has always presented a unique set of challenges. Typical solutions involve complex installations, frequent visits to remote locations to keep the system fully operational and require expert level attention to retrieve and share data amongst customers, consultants and project leads.

Model 381-NMS - Permanent Noise Monitoring System

An Integrated Hardware & Software System with Digital Communication and an Open Interface for Long Term Noise Monitoring Applications. The Model 831-NMS permanent noise monitoring system is designed for long term monitoring around airports, industrial facilities, motorsport complexes, wind farms, mining operations, and within the general community. Many required accessories are integrated through the INT docking station. Two way remote...

Noise Tutor NMS Rapid Deployment Noise Monitoring System

Integrated Internet Solution for Remote Noise Monitoring. Continuous monitoring of environmental data in remote areas has always presented a unique set of challenges. Typical solutions involve complex installations, frequent visits to remote locations to keep the system fully operational and require expert level attention to retrieve and share data amongst customers, consultants and project leads.

Model CAL200 - Precision Acoustic Calibrator

IEC 60942 Class 1 Handheld Sound Level Calibrator for ½” microphones at 1000 Hz Used for Sound Level Meters and Other Sound Measuring Equipment. The Larson Davis CAL200 Sound Level Calibrator is a battery operated precision microphone calibrator used for the calibration of sound level meters and other sound measurement equipment. It can provide an output level of either 94.0 or 114.0 dB (switch-selectable) at a frequency of 1...

Model CAL250 - Precision Acoustic Calibrator

IEC 60942 Class 1 Handheld Sound Level Calibrator for 1” microphones at 251.2 Hz Used for Sound Level Meters and Other Sound Measuring Equipment. The Larson Davis Model CAL250 is a battery operated precision microphone calibrator used for the calibration of sound level meters and other sound measurement equipment. The CAL250 delivers a full 114.0 dB level output signal @ 251.2 Hz.

Model CAL150 - Precision Acoustic Calibrator

IEC 60942 Class 2 Handheld Sound Level Calibrator for ½” microphones at 1000 Hz Used for Sound Level Meters and Noise Dosimeters. The Larson Davis CAL150 Sound Level Calibrator is a battery operated precision microphone calibrator used for the calibration of sound level meters and other sound measurement equipment. It can provide an output level of either 94.0 or 114.0 dB (switch-selectable) at a frequency of 1 kHz.

Model CAL291 - Precision Acoustic Calibrator

Under IEC and ANSI standards, a sound intensity measuring system consists of a two microphone sound intensity probe and a dual channel processor. The accuracy of the intensity measurement is strongly dependent upon the phase accuracy between the two measurement channels, including the microphones. Sound intensity measurement systems are classified into Class 1 or 2 based upon the pressure-residual-intensity index which is measured using a...

Model HVM200 - The Human Vibration Monitor

The HVM200 is a small rugged vibration meter with built in Wi-Fi that can be used to measure hand-arm, whole body and general vibration. It includes the metrics and frequency weightings needed to measure human vibration. This 3 channel meter meets the requirements of ISO 8041:2005 and it is designed to measure per ISO 2631-1, 2 & 5 and ISO 5349 in support of the American Conference of Governmental Industrial Hygienists (ACGIH) Threshold...

SoundAdvisor - Model AudCal - Audiometer Calibration System

The new SoundAdvisor Audiometer Calibration System AudCal is a field-ready solution for fast, comprehensive audiometer calibration. The system combines the power and versatility of the SoundAdvisor Model 831C sound level meter with the accessibility and functionality of the LD G4 Utility Software. AudCal works seamlessly with a tablet for both testing and data collection–no PC is required. Artificial ear couplers and mastoids are available...

Model AEC206 - Headphone R&D Test Fixture

The Larson Davis Model AEC206 Binaural Test Fixture is the tool for testing supra-aural, circumaural, supra-concha, intraconcha, and insert-type headphones. Preassembled with IEC 60318-4 (711) occluded-ear simulators and TEDS compatible preamplifiers that provide electronic calibration information, the Model AEC206 is user-friendly and easy to learn. Additionally, calibration is a simple process—a custom adapter is included for the Model...

Model AEC210Z - Headphone Production Test Fixture

The Headphone Production Test Fixture Model AEC210 is a cost effective solution for production volume headphone testing on a production line. Flush-mounted microphones and the flexibility to add speakers and additional microphones make it possible to test both noise-cancelling headphones and headsets with microphones. Two fully adjustable headphone positioners allow for accurately controlled placement and consistent, repeatable testing. A...

Model BAS001 - Omnidirectional Sound Source

The BAS001 Source is designed to generate omni-directional sound fields for making standard compliant measurements including: reverberation time (ISO 3382, ASTM E2235), building acoustics (insertion loss, acoustic absorption area, etc: ISO 140-4 ISO 140-3, ASTM E336, ASTM E90, DIN 55 210). The BAS001 is typically used to saturate a room with a uniform acoustic field. The available high-efficiency power amplifier has no fan for cooling, allowing...

Model BAS003 - Directional Sound Source

The BAS003 Source is designed to generate homogeneous sound fields using random noise in compliance with the following standards: Building acoustics (insertion loss, acoustic absorption area, etc: ISO 140-3, ASTM E90, ISO 140-5, ASTM E966). The BAS003 is typically used to generate a noise in a free-field for the evaluation of the transmission loss index of a façade. The available high-efficiency power amplifier, BAS002, is light and can be...

Model BAS002 - Amplifier

Measurement of reverberation time, sound isolation, and absorption coefficient are generally important measurements when verifying that a space or material complies with design goals. When making these measurements in the field or laboratory it is important to have equipment that is dependable, portable and easy to set up and use. When coupled with the BAS001 omnidirectional speaker or BAS003 directional speaker, the BAS002 amplifier is the ideal...

Model BAS004 - Tapping Machine

The BAS004* is used to simulate foot fall noise in a manner that is well controlled and reproducible so that measured results can be replicated and compared with other measurements. Unique to the BAS004 is an innovative method for raising the five “hammers” using an electromagnetic field rather than the traditional motor, gears and cam. This eliminates unwanted vibration and maintenance associated with a motor, gears and cam while...

Model BAS006 - Impulsive Sound Source

The BAS006 is an innovative device used to create impulsive noise that includes low frequency energy and avoids problems like secondary bounce. These characteristics make it a great choice for quickly measuring reverberation time when the complexity and weight of a speaker and amplifier is not needed. Use the BAS006 with a Larson Davis sound level meter to automatically detect the impulse and perform the ensemble averaging so you...

Model REF500 & REF600 - Reference Sound Source

The REF500 (120/240V, 50Hz) and REF600 (120/240V, 60Hz) Reference Sound Sources are an excellent tool for providing accurate and repeatable reference sound levels. These sources offer extremely flat response over a broad frequency range and are ideal for use in such applications as sound power, sound absorption, and sound insulation measurements. The REF500/600 can be used for qualification tests on acoustical environments, sound absorption...

Power Supply Model 2221

The Model 2221 provides the highly stable DC polarization voltage required by precision microphones along with low noise amplification enabling it to drive input and output cables as long as 500 feet. It is rugged, lightweight and will provide up to forty hours of continuous operation (with PRM902 Microphone Preamplifier) using six AA internal batteries. It can also provide sufficient current to power the PRM903 Microphone Preamplifier, which has an...

Environmental Shrouds

Environmental Protection Shrouds: Larson Davis manufactures a complete line of weather protection systems (shrouds) for ½” microphones and preamplifiers. They are the perfect choice for short to mid-term measurements in inclement weather. Their special acoustic windscreen material and configuration protect the microphone and preamplifier from rain, sleet, and snow by sealing the preamplifier in a desiccated chamber, thus preserving...

Signal Conditioner Model 2210

Battery powered microphone signal conditioning for multi-channel DAT recorders, analog tape recorders and computer-based data acquisition systems. Provides microphone polarization voltage, adjustable gain and filtering (A-weight, C-weight, or band-pass). Can also be used with ICP and charge-coupled accelerometers with the appropriate accessories. Automated sequential multi-channel sound and vibration measurements using a single or dual channel analyzer...

Miscellaneous Accessories

The PRM2101K outdoor preamplifier has been designed for permanent outdoor use in severe weather conditions. It is constructed of stainless steel to resist corrosion, and its thin profile minimizes both wind resistance and acoustic reflections. It is mounted to resist shock and will screw onto any 1.5' standard pipe thread.

Model SRC20 Signal Generator

TheSRC20 is a powerful, value-priced digital signal generator housed in a durable, hand-held package. This lightweight waveform generator is ideally suited for laboratory and field requirements. The SRC20 provides extremely stable, and statistically repeatable source signals used in applications such as reverberation measurements, vibration excitation, audio system equalization, and electronic measurements. The SRC20 can be powered by one on-board 9 Volt...

Preamplifiers

Larson Davis offers a number of microphone preamplifiers for a variety of applications. Ruggedly built, they can drive lines up to 500 feet with frequency response from as low as 0.3 Hz to as high as 200 kHz.

Condenser Microphones

PCB Larson Davis offers wide range of condenser microphones for precision measurements in diameters of ¼ inch, ½ inch and 1 inch. Each microphone is supplied with an individual calibration certificate.

Microphone Preamplifiers

Larson Davis offers a number of microphone preamplifiers for a variety of applications. Ruggedly built, they can drive lines up to 500 feet.

Model 426A12 - Permanent Outdoor Microphone with Remote Humidity Sensing

The Larson Davis 426A12 Outdoor Microphone has been designed for permanent outdoor use in any weather condition. It is constructed of stainless steel to resist corrosion, and its profile minimizes both wind resistance and acoustic reflections. It includes a rain hat, wind screen and bird spikes and an electrostatic actuator which can be controlled remotely for on-site calibration checks. With the proper choice of microphone, it can provide...

Tripods and Adapters

Fixtures to adapt microphones to calibrators, microphones to preamplifiers, attached preamplifiers to trips, or modify electrical connections.

Accelerometers for HVM

Larson Davis offers a selected range of measurement accelerometers optimized for use with the HVM200 Human Vibration Monitor. They cover the complete range of applications including Hand-arm, Whole-body, and Glove Transmissibility measurements.

Larson Davis - Model PRM2103 - Outdoor Preamplifier

New Lower Cost Alternative Outdoor Preamplifier with all the necessary functionalities of Model 426A12 The Larson Davis PRM2103 has been designed to be used with an environmental shroud for portable or permanent outdoor use in a wide range of weather conditions. The PRM2103 combines the cost savings of a standard preamplifier with features for unattended monitoring and an inexpensive shroud to create a product that is ideal for remote sound level...

Model 831-INT - Docking Station

The Model 831-INT provides the 426A12 outdoor microphone with both electrical power and control commands for its electrostatic actuator, temperature and humidity readout. The Vaisala WXT520 (SEN031) weather sensor is connected to the Model 831-INT for wind speed and direction, temperature and humidity, barometic pressure, rain and hail.

Acoustic Couplers & Ear Simulators

Whether testing an earphone, hearing aid or audiometer, there is a Larson Davis coupler to satisfy your requirements. Due to the rugged, stainless steel construction and product quality you can rely on your Larson Davis coupler or ear simulator to work dependably for many years.

Larson Davis, a division of PCB Piezotronics Products

Noise Dosimeters

Sound Level Meters

Environmental Noise Monitoring Systems

Acoustic Calibrators

Human Vibration

Audiometer Calibration Systems

Headphone Test Fixtures

Sound Sources

Microphones & Accessories