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Scientific Instruments, Testing & Measuring Equipment For Demanding Industries |
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BKS & AssOCIATES LLP |
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High accuracy Sound Level meter with built-in Calibrator Check |
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Sound Meter / Noise Meter |
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BKS & Associates LLP Opening Hours : 9.00—1300 hrs & 1400 to 1800 hrs, Monday to Friday |
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Sound meter or noise meter measures sound pressure level and usually converted to sound exposure level (SEL) and displayed in decibel (dB). The time average sound level or as it is usually called the 'equivalent continuous sound level' has the formal symbol LAT or previously commonly referred to as Leq. It is commonly used in noise pollution studies or environmental noise monitoring in factories, offices, construction sites, roads and aircraft noise. The current International standard for sound level meter performance is IEC 61672:2003 and this replaces the older design meter with 60651 and 60804 standards. Do call us (Tel: 6749 2341 or email: enquiry@bksna.com.sg) for your needs on the noise meter or noise monitoring requirements.
Classes of sound meter commonly used are class 1 and 2 (or type 1 or 2). Class 1 instruments have a wider frequency range and a tighter tolerance than a similar, lower cost, Class 2 unit. Due to the higher cost of instrument, class 1 sound meter is used in outdoor environmental monitoring or when legislation requirement has to be met. In Singapore, class 1 sound meter is required in the Environmental Protection and Management Act when using to measure the Boundary Noise Limits for Factory Premises or Control of Noise at Construction Sites. Most standards permit the use of class 2 or type 2 sound / noise meter for general purpose such as OSHA in USA. Certification of sound meter classes is usually carried out in stringent Physikalisch-Technische Bundesanstalt (PTB), Germany or The National Institute of Standards and Technology (NIST), USA.
What is a Sound Level Datalogger? The Tango™ and EXTECH HD600 Datalogging Sound Level meter measures, displays, and stores sound level measurement data. Up to 20,000 readings can be stored in the meter, each with the date and time stamp. Readings can be recalled on the meter’s display or they can by downloaded to a PC. Included software permits the user to view, graph, print, and export data to a spreadsheet.
How are Sound Level Dataloggers used? Since a Sound Level Datalogger can automatically store readings at a user-programmable sample rate, they are the ideal tool for taking readings ‘unattended’ for long periods of time. After readings are stored they can be transferred to a PC to be viewed, graphed, printed, or exported to a spreadsheet for further analysis. This capability can be applied to many applications such as airport noise analysis, construction zone monitoring, trafἀ c intersections, concert venues, environmental impact studies, and many others.
What is ‘A’ and ‘C’ Frequency Weighting? Frequency “weighting” selections allow the user to choose how the meter will treat sound measurements over the meter’s specified frequency range. In ‘A’ weighting mode, the meter gives more “weight” to certain frequencies. In other words, sound levels at certain frequencies will be boosted or cut (to match how the human ear responds to sound). “A” weighting is useful for OSHA compliance testing. The “C” weighting selection provides a more “flat” response, meaning that all frequencies are treated basically the same (no boosting or cutting of sound level). “C” weighting is suitable for machine analysis and diagnostics.
What is the significance of FAST / SLOW Response Time? Response Time selections refer to how fast or slow the meter will respond to sound. Most meters have a slow and a fast selection. “Slow” response is most often used for hearing conservation/OSHA programs and is an “averaging” of sound level over time. “Fast” response is most commonly used for product noise reduction efforts and can detect quick noise bursts (For example: fireworks). |
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94/114 dB Sound Calibrator |
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CLASS 1 SOUND LEVEL METER
The Tango™ sound level meter is a compact Class 1 basic sound level meter for workplace and environmental protection applications Features: · Meets Class 1 according to IEC 60651 / 60804 / 61672 · 30 to 140dB measurement range with integrating function(LAeq, Lceq) · Datalogging function records up to 194 days · Programmable storage cycle from 62.5ms to 60min · Illuminated LCD Display · Two batteries (1.2 ... 1.5 V, size AA) guarantee an operation time of 120 h and a storage time of 10 years (for lithium batteries). · Includes USB cable, charger and PC utility software · For more details, click here for more ...
CLASS 2 / TYPE 2 SOUND LEVEL METER
407736: Sound Level Meter with Built-in Calibrator Sound level meter with ±1.5dB accuracy meets Type 2 standards Features: · Provides 1.5dB accuracy · Meets ANSI and IEC 651 Type 2 standards · Two measuring ranges: 35 to 90dB (Low) and 75 to 130dB (High) · Max Hold with reset button · Built-in calibration check (94dB) · Analog AC/DC outputs for connection to an analyzer or recorder · Tripod mount ideal for field use · For more details, click here for more ...
407732: Entry Level Sound Level Meter Dual-range Type 2 digital sound level meter with backlit LCD Features: · High accuracy meets ANSI and IEC 651 Type 2 standards · High and Low measuring ranges: 35 to 100dB (low) and 65 to 130dB (high) · Data Hold and Max Hold functions · Backlit LCD display to view in dimly lit area · For more details, click here for more ...
HD600: Datalogging Sound Level Meter Stores up to 20,000 records with real date and time stamp Features: · 30 to 130dB range with 1.4dB accuracy · Meets ANSI and IEC61672-1 Type 2 standards · Datalogging capability up to 20,000 records at speed from 1/sec to 1/59sec · Capture up to 10 reading/sec when connected to a PC · MIN/MAX, Data Hold, Auto power off · Built-in USB port, double molded housing with built-in stand · Complete with AC adaptor, Windows® compatible software, USB cable, wind cover, tripod, 9V battery andhard carrying case · For more details, click here for more ...
SL130G: SL130G: Sound Level Alert with Alarm Built-in under/over-range Big LEDs indicators, great for Hospital and Event noise monitoring Features: · Wall, desk or tripod mount with optional 15ft (5m) microphone extension cable for remote monitoring · Bright LEDs (red flashing or green) can be read from 100ft (30m) · Continuous monitoring of sound level in 3 ranges: 30 to 80dB, 60 to 110dB, 80 to 130dB · User settable high or low limit (30 to 130dB) with output to drive external relay module · Built-in desk, wall and tripod mounts · Meets ANSI Type 2 and EN 60651 accuracy specs - compliant to OSHA · Complete with 100-240V AC 50/60Hz adaptor and microphone wind cover · For more details, click here for more ...
407766: 94/114dB Sound Calibrator 1kHz Professional Calibrator for 0.5" or 1.0" Microphones Features: · Calibrates and verifies Sound Level Meter operation · LED indicator lights up when power is on · Level position to select 94dB or 114dB · For use on Sound Level Meters with 0.5" or 1.0" microphones · Durable die-cast, aluminum housing · 1kHz sine wave at 94dB/114dB is generated to an accuracy of 5% (frequency) and ±0.8dB · For more details, click here for more ... |
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Class 1, Integrating Sound Level Meter for Leq measurement |
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Entry-level Sound Level meter , Type 2 |
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Sound Level Alert |
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