ATT-9000 Sound Level Meter

AKTAKOM ATT-9000 is a low-cost handheld sound level meter with optional analog output function. The sound level meter is equipped with a built-in capacitor microphone which provides sound measurement range within 30 to 130 dB with bandwidth from 31.5 Hz to 8 kHz. Optional analog output function allows using this device in ecological control automatic systems of  acoustic parameters in working areas and living spaces.

Features:

• Switching integration time: 200 ms and 500 ms.
• 2 types of amplitude-frequency characteristic: A type which models sound perception by the human ear. C type used to measure the true sound levels of the equipment under test.
• Overload indicator
• Handheld design
• High-contrast LCD
• Max. values hold
• Convenient and durable housing

Specifications:

• 3½ digit LCD, figures height is 0.7 in / 18 mm
• Measurement range: 30…130 dB (three 50 dB subranges: 30...80 dB; 50...100 dB; 80...130 dB)
• Resolution: 0.1 dB
• Frequency range: 31.5…8000 Hz
• Capacitor type microphone with external diameter: 0.5 in / 12.7 mm
• Integration time: 200 ms (fast mode), 500 ms (slow mode)
• Output signal: AC voltage of 0.5 Vrms at the subranges; DC voltage: 0.3…1.3 V (10 mV/dB)
• Battery: 9 V
• Consumption current: 6 mA
• Dimensions: 10 x 2.8 x 1.1 in / 255 x 70 x 28 mm
• Weight: 9.7 oz / 275 g
• Ready package:
  - dimensions: 11.2 x 9.8 x 2.8 in / 285 x 250 x 70 mm
  - weight: 35.3 oz / 1 kg

Standard:

• Sound level meter
• Case
• User manual

Optional:

• Sound calibrator: 94 dB / 1000 Hz