Sound Testers

About Sound Testers

Sound testers, also known as sound level meters or decibel meters, are precision measuring instruments designed to accurately measure noise levels in both domestic and professional environments. These essential diagnostic tools help identify potentially harmful noise levels, ensure compliance with workplace safety regulations, and verify that acoustic treatment is performing as intended. Modern digital sound level meters feature high-sensitivity condenser microphones that capture accurate readings across a wide frequency range, displaying results on easy-to-read LCD screens in decibels (dB).

The sound testing equipment available from Tooled-Up.com ranges from compact handheld meters ideal for quick spot checks to more advanced models offering data logging capabilities and multiple weighting scales. Most devices feature both 'fast' and 'slow' response modes to accommodate different measurement scenarios, along with max/min hold functions that capture peak noise events. Many units also incorporate wind shielding covers to reduce interference when taking outdoor measurements, ensuring readings remain accurate in varying environmental conditions.

Whether monitoring construction site noise levels, testing acoustic installations, or conducting workplace noise assessments to meet HSE requirements, digital sound level meters provide the accurate, repeatable measurements that professionals require. Battery-powered operation makes these instruments highly portable, whilst ergonomic designs ensure comfortable handling during extended measurement sessions.

Jargon Buster

• Decibel (dB): The unit of measurement for sound intensity. The scale is logarithmic, meaning that an increase of 10dB represents a doubling of perceived loudness. Typical conversation measures around 60dB, whilst construction equipment can exceed 100dB.
• A-Weighting (dBA): A frequency weighting filter that adjusts measurements to reflect how the human ear perceives sound at different frequencies. dBA readings are most commonly used for workplace noise assessments and HSE compliance.
• Fast/Slow Response: Fast response mode (125ms) captures rapidly changing sound levels, whilst slow mode (1 second) provides averaged readings useful for general environmental noise monitoring.
• SPL (Sound Pressure Level): The measure of the pressure variation caused by sound waves, expressed in decibels. SPL is the standard metric used by sound level meters.
• Data Hold Function: Allows users to freeze a reading on the display for recording purposes, particularly useful when working in awkward positions or low-light conditions.
• Max/Min Recording: Automatically captures the highest and lowest sound levels detected during a measurement session, essential for identifying peak noise events in fluctuating environments.

Who Uses Sound Testers?

Sound testing equipment serves a diverse range of professionals and applications across multiple sectors:

• Health & Safety Officers: Conducting workplace noise assessments to ensure compliance with HSE Control of Noise at Work Regulations
• Acoustic Consultants: Testing sound insulation performance in buildings and verifying acoustic treatment installations
• Construction Site Managers: Monitoring noise emissions to comply with local authority restrictions and neighbouring property considerations
• Building Control Inspectors: Verifying compliance with building regulations Part E (resistance to sound transmission)
• Environmental Health Officers: Investigating noise complaints and monitoring commercial premises for statutory nuisance
• Facilities Managers: Assessing noise levels in offices, factories, and public buildings to maintain comfortable working environments
• HVAC Engineers: Testing noise output from ventilation systems, air handling units, and climate control equipment
• Audio-Visual Installers: Measuring ambient noise levels when designing conference room and cinema installations
• DIY Enthusiasts: Checking noise levels from power tools, workshop equipment, and home improvement projects

How to Choose the Right Sound Testers

Selecting the appropriate sound level meter depends on your specific measurement requirements and intended applications:

Measurement Range: Consider the typical noise levels you'll be measuring. Most sound testers at Tooled-Up cover 30-130dB, suitable for most applications from quiet offices to construction sites. Ensure the lower threshold is sensitive enough for your quietest environments and the upper limit accommodates peak noise events.

Accuracy and Calibration: Professional-grade meters offer greater accuracy (typically ±1.5dB) and may include calibration certificates. For HSE compliance work, consider whether you need traceable calibration and factor in periodic recalibration requirements.

Display Features: Backlit LCD displays prove invaluable when working in poorly lit conditions. Dual displays showing current and max readings simultaneously increase efficiency during measurement sessions. Large digits improve readability at arm's length.

Response Modes: Fast response mode suits environments with rapidly fluctuating noise, whilst slow mode provides stable readings in steady-state conditions. Units offering both modes deliver maximum versatility across different scenarios.

Additional Functions: Data hold freezes readings for recording, whilst min/max memory captures peak events. Some models incorporate data logging for continuous monitoring, plus PC connectivity for detailed analysis and reporting. Temperature measurement adds useful functionality for environmental monitoring applications.

Build Quality and Portability: Pocket-sized meters suit tradespeople requiring portable equipment, whilst ruggedised housings protect against site work conditions. Battery life becomes critical for extended monitoring sessions away from mains power.

Popular Accessories

• Windshields and Foam Covers: Essential for outdoor measurements, reducing wind interference for accurate readings
• Calibration Tools: Acoustic calibrators ensure ongoing measurement accuracy between professional recalibration services
• Tripod Adapters: Enable stable, hands-free monitoring during extended measurement sessions
• Carrying Cases: Protect delicate microphones and electronics during transportation between sites
• Spare Batteries: AAA batteries are standard – keep spares available for uninterrupted operation
• Data Logging Software: PC applications for downloading, analysing, and reporting measurement data from advanced models

Safety Information

Whilst sound level meters themselves pose minimal safety risks, the environments being tested often require appropriate precautions. Always wear suitable hearing protection when working in high-noise environments (typically above 85dB), even when taking brief measurements. Sound testers indicate noise levels but don't provide protection.

When conducting measurements on construction sites or industrial premises, observe all site safety protocols including wearing appropriate PPE such as hard hats, high-visibility clothing, and safety footwear. Be aware that focusing on meter readings may distract from hazards including moving machinery, vehicles, or overhead operations.

Under the HSE Control of Noise at Work Regulations 2005, employers must assess and reduce workplace noise exposure. Lower exposure action values begin at 80dB(A), whilst upper exposure values of 85dB(A) require hearing protection zones. Peak sound pressure limits of 137dB must not be exceeded.

Frequently Asked Questions

What decibel level is considered safe for prolonged exposure?
The HSE recommends that workers should not be exposed to average noise levels above 85dB(A) over an eight-hour period without hearing protection. Exposure at 80dB(A) triggers requirements for risk assessment and making hearing protection available. Outside work environments, prolonged exposure above 70dB can potentially cause gradual hearing damage.

Do I need to calibrate my sound level meter?
For general indicative measurements, calibration is less critical, though accuracy will drift over time. However, for measurements intended for HSE compliance, legal proceedings, or professional acoustic reports, regular calibration with traceable certification is essential. Most professional users arrange annual recalibration.

What's the difference between dB and dBA measurements?
dB represents the raw sound pressure level without weighting, whilst dBA applies A-weighting that adjusts the measurement to reflect how human hearing perceives different frequencies. dBA readings are standard for workplace noise assessments as they correlate better with hearing damage risk and perceived loudness.

Can sound level meters measure low-frequency noise like bass?
Standard sound level meters are optimised for the mid-frequency range most relevant to hearing protection. Very low frequencies (below 20Hz) require specialised equipment. However, most quality meters from brands like Draper and Sealey accurately capture bass frequencies within the audible spectrum that contribute to overall noise exposure.

How do I know if my workplace noise levels require action?
If your sound level meter consistently records above 80dB(A), you've reached the lower exposure action value requiring risk assessment and hearing protection availability. Readings above 85dB(A) trigger the upper exposure action value, mandating hearing protection use and implementation of noise reduction programmes. Peak levels above 135dB require immediate action.