Spartan™ 721
Portable sound level meter designed for accurate acoustic measurement in various environments, suited for industrial and occupational settings. Known for its ease of use and durability, it features Class 2...
Key Product Features
Model: LD-721
Dosimetery
Simple to Use
USB-C & Wireless Charging
Long Battery
Class 2
Touch Screen
Atlas App for iPhone or Android
G4 Utility Reporting Software
Automatic Calibration
Experience hassle-free calibration with the fully automated system. Simply insert the microphone, and the meter takes care of the rest, adjusting, calibrating, and logging each calibration interval. Stay confident with a complete calibration history, effortlessly maintained for you.
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Dosimetry Mode: Effortless Noise Monitoring
Easily assess workplace noise exposure with Larson Davis dosimeters. The intuitive Dosimetry Mode simplifies data collection, allowing you to monitor, log, and report employee noise levels with precision. Designed for quick setup and reliable results, it ensures compliance with occupational noise standards while keeping workers protected.
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Effortless Operation – Here’s Why!
Effortlessly navigate with the intuitive colour touchscreen – preloaded with essential features and zero complicated settings. A crisp, responsive display with USB-C & wireless charging. A true smartphone like device.
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G4 Utility Reporting Software
The G4 LD Utility is free software for all compatible Larson Davis meters, enabling you to connect, control, and view data from your device.
Organise files by project, view data in graphs or spreadsheets, and export reports.
Analyse multiple parameters, visualise heat maps, and, for meters with sound recording, play synchronised audio and edit data directly from the graph.
Atlas™ – Mobile App
Your smartphone can now become the keypad and display for the SoundExpert via Bluetooth.
- Manage instrument setups
- Run and stop measurements
- View data except 1/1 and 1/3 octave data
- Manage Wi-Fi connections
- Calibrate and check calibration
- View files
- Schedule measurements
Experience Precision with the Spartan
Concerned about potentially dangerous levels of noise in the workplace? Spartan Sound Level Meters Series 721 from Larson Davis, designed for Occupational Health and Safety professionals, offers all the tools needed for workplace noise and noise exposure measurements, including built-in workplace noise dose metrics and selectable time and frequency weightings.
Unparalleled Efficiency
Spartan is ideal for site surveys and task-based noise exposure measurements like those outlined in ISO 9612. Built-in noise dose and LEX metrics simplify job-based noise exposure measurements. Its user-friendly interface and sharp, high-resolution display deliver instant clarity and effortless navigation, saving you valuable time in the field. The lightweight design and comfortable hand grips allow for easy, single-handed operation, making quick measurements a snap.
LD-X21-DOSPower That Lasts: Long-Life Battery
Power through your longest monitoring sessions with the Larson Davis Spartan's fantastic 40 hour battery life, ensuring continuous, uninterrupted data capture that maximises your efficiency in the field.
Engineered to meet IEC 61672-1:2013 Class 2 and IEC 61252:2017 standards. It is the ideal, cost-effective tool for assessments under the UK Control of Noise at Work Regulations 2005.
Key Product Specifications
Optional 1/1 & 1/3 Octaves
Data Logging 1 s to 1 h
Leq, Lmax, Lmin, Lpeak
17 to 140 dB
Software Options
Product Accessories
Every product needs flexibility to do whatever you want it to.
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CAL200 Field Calibrator
CAL1150
Microphone Adaptor
LD-ADP109
1/2" Pre-polarized free-field Mic
LD-377B02
Preamplifier
PRM821/PRM721
USB charging cable & adapter
CA-
Windscreen for 1/2 in Mic
LD-079A06
Environmental Kit
LD-NMS048-NOBAT
721 Field Free Microphone
LD-375A04
821 Free-field Microphone
LD-377B02
USB-C Cable
LD-CBL242-03
USB-C Charger
LD-PSA045
Hard shell shipping and carrying case
LD-CCS060
Qi charger pad with USB-C connector
LD-PSA046
Tripod
LD-TRP025
Mini-Tripod
LD-
8 GB Memory Card
LD-X21-SD-8GB
32 GB Memory Card
LD-X21-SD-32GB
Preamplifier extension cables up to 200 ft. (60 m)
LD-EXC series
Screen Protector
LD-X21-SP
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Guides & Downloads Email SupportFrequently Asked Question's
What is the Spartan 721 used for in workplace health and safety?
The Spartan 721 is designed for workplace noise assessments, combining a sound level meter and personal noise dosimeter in one device.
It helps employers measure and manage noise exposure in line with the UK Noise at Work Regulations and supports the practical application of HSE guidance (L108).
How does the Spartan 721 help meet HSE Noise at Work (L108) requirements?
The Spartan 721 integrates sound level meter functionality with dosimetry, measuring Leq, Lmax, Lmin, and Lpeak for accurate assessment of daily noise exposure (LEX,8h).
These measurements align with HSE L108 guidance, helping organisations identify risks and implement appropriate control measures.
Does the Spartan721 support both area and personal noise monitoring?
Yes, the Spartan 721 combines a handheld sound level meter with built-in dosimetry, allowing both area noise surveys and personal exposure monitoring.
What practical features does the Spartan 721 offer for workplace use?
The Spartan 721 includes features shared with advanced sound level meters, including a touchscreen interface, long battery life for full-day use, and flexible charging via USB-C and wireless options.
These features make it reliable and easy to use during extended workplace noise surveys.
What reporting tools are available for workplace noise compliance?
The Spartan 721 integrates with G4 utility reporting software, allowing users to analyse both sound level meter and dosimetry data in one platform.
This makes it easy to generate professional reports and demonstrate compliance with UK Noise at Work regulations and HSE L108 guidance.
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