เครื่องวัดเสียง DSM141

Digital Sound Level Meter

Overview

The DSM141 is a basic portable multifunction digital sound level meter. It measures ambient sound level ranging from 30dB to 130dB with frequency range of 30Hz~8 kHz.

Features

Measures:

• Sound Level
• A/C Weighting
• Fast/Slow Mode

Additional Features:

• LCD Display
• Auto-ranging
• Auto Power Off
• Max Display
• Decibel/SONE
• Data Hold
• Backlight
• Low Battery Indicator

Specifications

• Microphone type: polarized capacitive microphone
• Sound pressure accuracy: ± 1.5 dB (sound pressure standard, 94 dB @ 1 KHz).
• Sound pressure frequency response: 30Hz - 8 KHz.
• Dynamic range of sound pressure: 50 dB (for each measurement gear level).
• Sound pressure measurement scope: 30-130 dBA, 35-130 dBC.
• Sound pressure frequency weighting characteristics: A and C.
• Dynamic characteristic of sound pressure: FAST: 125ms, SLOW: 1sec
• Digital display: 4-digit, resolution: 0.1 dB, sampling rate: 2 times/sec.
• Analog bar display: Each analog bar represents 1 dB, sampling rate is 20 times/sec.
• Measurement range: 30-80 dB, 40-90 dB, 50-100 dB, 60—110 dB, 70—120 dB, 80-130 dB, 6 ranges in total.
• Automatic shifting: microcomputer will automatically select the best gear level in the range from 30 to 130 dB.
• Below or above limit prompt: indicated by “UNDER” or “OVER”.
• Power supply: 4 x  1.5V AAA
• Operating temperature: 32°F to 104°F (0 ~40 °C)
• Operating humidity: 10 ~80％ RH
• Storage temperature: 10°F to 140°C (- 10 ~60 °F)
• Storage humidity: 10 ~70％ RH
• Outside measurement: 7.6(L) x 2.4(W) x 1.14(H) (193 (L) × 60(W) × 29 (H) mm)
• Weight: about 7 oz. (200 g) including batteries