Digital Sound Level Meter™

Prevent worker-related hearing loss!

Each Digital Sound Level Meter comes complete with a removable windscreen, battery, and a protective case

What Is The Digital Sound Level Meter?

EXAIR’s Model 9104 Digital Sound Level Meter is an easy to use instrument that can measure and monitor the sound level pressure in a wide variety of industrial environments. The source of loud noises can be quickly identified and isolated so corrective measures can be taken to reduce or eliminate the problem. For compressed air noise, it is often as simple as replacing the existing inefficient blowoffs with EXAIR’s engineered compressed air products such as the Super Air Knife, Super Air Amplifier or Super Air Nozzles. In many cases, the EXAIR products can reduce noise levels by 10 dBA which is perceived as cutting the sound volume in half.

Hearing loss induced by high noise in the workplace is a common problem. Exposure to high noise levels for an extended period of time can lead to a permanent hearing loss for workers not wearing proper hearing protection. The Digital Sound Level Meter can help employers protect workers by monitoring noise levels so they don’t exceed the limits shown in OSHA Standard 29 CFR – 1910.95(a). Failure to comply can result in hefty fines.

Maximum Allowable Noise Exposure

WorkSafe Australia Maximum Allowable Noise Exposure
LAeq,8h = 85 dB(A)
Exposure Time 16* hrs 12* hrs 8 hrs 4 hrs 2 hrs   1    hr 30 min 15 min 7.5 min 3.8 min 1.9 min 57 sec 28.8 sec 14.4 sec 7.2 sec 3.6 sec 1.8 sec 0.9 sec
Sound Level dBA 80 82 85 88 91 94 97 100 103 106 109 112 115 118 121 124 127 130

* The adjustment factor for extended work shifts is taken into account.

OSHA Maximum Allowable Noise Exposure
Standard 29 CFR-1910.95(a)
Hours per day (constant noise) 8 7 4 3 2 1 0.5
Sound Level dBA 90 91 95 97 100 105 110
Accurate and responsive, the Digital Sound Level Meter measures the decibels of the sound and displays the reading on the large LCD display that has a backlight button for easier viewing. An “F/S” response time button provides a choice of slow response measurements for comparatively stable noise measurement or fast for varying noise. The “Max Hold” setting will measure the maximum noise level of sounds and updates continuously if a louder sound is detected. Certification of accuracy and calibration traceable to NIST (National Institute of Standards and Technology) is included.

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  • Measures sound level range from 35dB – 130dB
    (Low: 35 to 100; High: 65 to 130dB)
  • Frequency range 31.5Hz – 8kHz
  • A and C weightings (check compliance with safety
    regulations and acoustic analysis)
  • Slow (1 sec) and fast (125ms) response settings to check peak and average noise levels
  • Maximum hold feature to measure peak sound levels
  • Accuracy is ± 1.5dB
  • NIST Certification included
  • Four-digit LCD display in 0.1dB steps with backlight
  • Battery life is 50 hours (typical) with low battery alert
  • Automatic power off after 15 minutes of non-use
  • Meets CE, ANSI, and IEC Type 2 SLM standards
  • Tripod mounting ideal for taking long-term measurements (tripod not included)
  • Removable windscreen for use in windy conditions to reduce misreads
  • Includes protective carrying case, 9V battery, instruction manual, and removable windscreen

The Sound Level Meter identifies a potential source of hearing loss.


Digital Sound Level Meter
Model Description
9104 Digital Sound Level Meter
includes hard-shell plastic case, removable wind screen and battery
9104CAL Digital Sound Level Meter Calibration

Installation and Maintenance Guides

Digital Sound Level Meter

306.29 KB

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