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Home Products Noise Sound Level Meter ACO Waterproof Sound Level Meter, Model 6226NW

ACO Waterproof Sound Level Meter, Model 6226NW

ACO Waterproof Sound Level Meter, Model 6226NW

It can be used at the site to be expected as high-humidity environment with rain or sheet of spray.

TYPE 6226NW is a "waterproof sound level meter" with included extension cable, realized by particular kind of waterproof technology newly developed.

It guarantees trouble-free measurement even under rainy condition.

Due to the function of special filter which lets air and sound through preventing water from coming in, it allows to continue the measurement despite of drops of water on the top of the microphones after they are dried up.

The diaphragm or preamplifier would never be waterlogged or rust out.


Key Feature

  • Outdoor noise measurement under the condition of rainfall - Aircraft noise, traffic noise, environmental noise
  • Outdoor measurement of noise of running vehicle and measurement of engine room noise
  • Noise level measurement in factories with steam generation
  • Environmental noise measurement at an indoor swimming pool or an aquarium
  • Measurement of leisure cruiser noise or motorboat noise


  • Applicable Standards  :  JIS C 1502, IEC 651 804 Class ll
  •  Measurement Level  :  28 - 130dB(A); 33 - 130dB(C); 38 - 130db(F)
  •  Frequency Range  :  20Hz~10kHz (Conforms with measurement law:20Hz~8kHz)
  •  Microphone Type  :  TYPE 7052NW(Waterproof 1/2" electret condenser microphone)
  •  Level Range  :  10dB step, 6 stages
  •  Linearity range  :  100dB
  •  Time weighting  :  FAST, SLOW, IMPULSE
  •  Frequency weighting  :  A, C, FLAT
  •  Measurement items  :  Sound pressure level (Lp); Equivalent continuous sound pressure level (Leq); Sound exposure level (Le)、Maximum sound pressure Level (Lmax); Minimum sound pressure level (Lmin); Percentile sound pressure level (Lx, 5 freely selectable values); C-weighted Peak Sound Pressure level (LCPeak)
  • Measurement time  :  1s, 3s, 5s, 10s, 1min, 5min, 10min, 15min, 30min, 1h, 8h, 24h, Manual (Max.199h59m59s)
  •  Sampling Time  :  20.8us (Leq), 10ms (Lmax, Lmin)
  •  Lx Sampling Time  :  100ms
  •  Display  :  Liquid crystal and Backlight (128×64 points)
  •  Digital display  :  4 digit display; Display cycle:display Period: 1s
  •  Bar display  :  Display Period : 0.1s
  •  Warning  :  Over  (+3dB from upper limited scale); Under (-0.6dB from lower limited scale)
  •  Battery display  :  Battery 4 steps display
  •  Built-in memory  :  Calculated value is memorized in memory.(Approx.10,000 samples:1000 sets of results)
  •  Built-in calendar  :  year/month/day/hour:minute:second
  •  Pause  :  Pause and a function that deletes preceding 3 or 5 sec Data
  •  Battery Type  :  Four 1.5V size-AA batteries Consumption current ; When AC adaptor is used ; Approx.2.1VA
  •  Battery life  :  Alkaline batteries : 20 hours, Manganese batteries : 10 hours when switch on a back light ; Approx.1/3 
  •  Operating temperature  :  Temperature : -10~50oC Humidity : Unlimited
  •  Size  :  85(W)×284(H)×46(D)
  •  Weight  :  Approx. 420g (including Batteries)
  • Part Number: