Mini Sound Level Meter with Temperature

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The AMT-911A mini digital sound level meter has a wide dynamic range and gives virtually instant readings. It is ideal for quick and easy environmental sound level checks. It features an accuracy of ±2dB, a fixed ‘A’ frequency rating, and the choice of fast or slow time weightings. It also features the environmental temperature on its hi-contrast colour LCD display as well as min/max and data hold functions.

  • Single measurement range: 35 to 135dB
  • Hi-range >100dB, Lo-Range <100dB
  • 0.1dB resolution
  • ‘A’ frequency weighting
  • Frequency Range 31.5hz to 8khz
  • Fast 125ms, or slow 1s time response weighting
  • Precision ½ inch electret condenser microphone
  • Lmax (LAFmax, LASmax)
  • Lmin (LAFMin LASmin)
  • 30mm colour LCD display with function indicators
  • Display updates every 300ms
  • Backlight for dark environments
  • Data hold
  • Max hold – displays highest measured value
  • Min hold – displays lowest measured value
  • Low battery indicator
  • Auto power off after 15 minutes of no activity (can be user disabled)
  • Supplied with wind muffler and battery

Sound Temperature
Range 35 to 135dB -20° to 70°C
Resolution 0.1dB 0.1°C
Accuracy ±2dB (94dB @ 1 Khz) ±1.5°C
Frequency Range 31.5Hz - 8Khz
Frequency Weightings A
Time Weightings Fast/Slow
Power 3 x 1.5V AAA Alkaline Batteries (LR-3)
Dimensions 144 x 56 x 31mm
Weight 73g

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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