Data Logging Sound Level Meter

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The AET-958 is a data logging sound meter with 4 measurement ranges (3 manually selectable, 1 auto range). It offers selectable ‘A’ or ‘C’ frequency weightings and a choice of either fast or slow time weightings. The data logging feature can record up to 262,100 readings in one or multiple recordings it at intervals of 1 second to 10 hours. It is designed to match the accuracies required of IEC 61672:2013 at ±1.4dB. Featuring a modern ergonomically designed grip, simple function buttons and a simple USB connection it is easy to use.

4 User selectable measurement ranges
  • 30 to 80dB
  • 50 to 100dB
  • 80 to 130dB
  • 30 to 130dB (auto range)
  • Over/Under range indicator

  • 1dB Resolution
  • Selectable ‘A’ or ‘C’ frequency weightings
  • Frequency Range 31.5hz to 8Khz
  • Selectable fast (125ms) or slow (1s) time weightings
  • Precision ½ inch electret condenser microphone
  • Lmax (LAFmax, LASmax, LCFmax, LCSmax)
  • Lmin (LAFmin, LASmin, LCFmin, LCSmin)
  • Data logging for 262,100 readings
  • Selectable sampling interval (1second to 10hours)
  • 55mm LCD display with bargraph and function indicators
  • LCD display backlight
  • Data hold
  • Max hold – displays highest measured value
  • Min hold – displays lowest measured value
  • USB interface for real time transfer of readings to a PC
  • 4mm camera bush for tripod mounting
  • Low battery indicator
  • Auto power off after 15 minutes of no activity (disabled when data logging)
  • Supplied with hard carry case, wind muffler, 3.5mm earphone plug, USB cable (1m), software, AC/DC mains power adapter, battery and 2 year warranty
Range 30 to 80dB, 50 to 100dB, 80 to 130dB, 30 to 130dB (auto range)
Resolution 0.1dB
Accuracy ±1.4dB (94dB @ 1 Khz)
Frequency Range 31.5Hz - 8Khz
Frequency Weightings 'A' or 'C'
Time Weightings Fast or Slow
Power 1 x 9V PP3 Alkaline Battery (LR-61)
Dimensions 252 x 66 x 33mm
Weight 262g

A calibration service can be purchased for this unit. Once the Service has been performed a certificate of calibration is produced and dispatched with your order. Calibration Services are performed on receipt of your order and as such will delay shipping. Details and options are outlined below.

Traceable Calibration (Sound)
Issued at 12 points: 94dB at A & C, Fast & Slow, Hi & Lo Range
104dB at A & C, Fast & Slow, Hi Range
Traceable certification is adequate for most applications and meets the calibration requirements of ISO 9001. All measurements contained in this type of certification are traceable back to National UKAS Standards.
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