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SL400 Sound Level Meter

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The four-digit display with additional bar graph is very easy to read in any environment thanks to the switchable LCD backlight.

The SL400 sound level meter is a perfect solution for demanding sound level measurements with A- and C-frequency evaluation, fast / slow time evaluation and many other practice-oriented functions.

The handy format, the low weight and the key arrangement optimized for one-hand operation make this measuring instrument an ideal basic equipment for standard measurements in the areas of industry, work and environmental protection.

Additionally, the SL400 is equipped with a live logging function and has a data memory for recording up to 32,700 measured values. The data obtained can be easily transferred to a PC via USB for software-supported analysis. The SL400 can also be attached to the supplied mini-tripod for logging or permanent measuring projects.

Furthermore, an integrated 3.5 mm jack provides connectivity for frequency analyzers or X-Y plotter.

Benefits in practice:

  • Accuracy class 2 according to IEC 61672
  • Frequency evaluation according to characteristic curves A and C
  • Maximum and minimum value display
  • Memory for up to 32,700 readings
  • Switchable time evaluation (fast / slow)
  • Display light
  • Bar graph display
  • 1/4-inch tripod thread
  • Data logger function
  • Analysis software
  • USB port and 3.5 mm jack socket
  • Including calibration certificate



Technical details:

  • Measuring range: 30-130 dB
  • Accuracy: IEC 61672-1 Class 2, ANSI S1.4 Type 2
  • Resolution: 0.1 dB
  • Frequency range: 31.5 Hz - 8 kHz
  • Dynamic range: 50 dB
  • Partial measuring range (low): 30 ... 80 dB
  • Partial measuring range (medium): 50 ... 100 dB
  • Partial measuring range (high): 80 ... 130 dB
  • Partial measuring range (auto): 30 ... 130 dB
  • Response time: 500 ms
  • Time evaluation: Slow (S) 1 s, Fast (F) 125 ms
  • Microphone: Electret condenser microphone
  • Power supply: 9 V block IEC 6LR61 / 6P22
  • Operating time without battery change:> 30 h
  • Operating Conditions: 0 to 40°C, 10 to 90% RH.
  • Dimensions (L x W x H): 255 x 63 x 45 mm
  • Weight: 305 g



Scope of delivery: Measuring instrument incl. Calibration certificate, power supply, mini tripod, USB cable, analysis software, operating manual and transport case 

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SL400 Sound Level Meter

SL400 Sound Level Meter

The SL400 sound level meter fulfills the requirements for sound level meters of accuracy class 2 according to IEC 61672-1 as well as ANSI S1.4 and is ideally suited for the documentation of machine noise or environmental noise, for work table measurements or expert assessments.

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SL400 Sound Level Meter

SL400 Sound Level Meter