GVDA GD151B Sound Level Meter

GVDA GD151B Sound Level MeterDigital Noise Meter 30–130 dB with A/C Weighting, Fast/Slow Response, Temperature & Humidity

The GVDA GD151B is a professional digital sound level meter designed for wide-range environmental and industrial noise measurement from 30 to 130 dB. Compared to the GD151A model, the GD151B supports both A-weighting and C-weighting, making it suitable for acoustics analysis, audio system calibration, workplace noise assessment, and environmental monitoring.

Key Features

• 30–130 dB measurement range: suitable for indoor and outdoor noise monitoring.
• A/C frequency weighting: A for environmental noise, C for broader frequency testing.
• Fast/Slow time weighting: Fast (125 ms) / Slow (1 sec).
• Temperature display: ℃ / ℉ switchable.
• Humidity measurement: 0.0%–99.9% RH.
• MAX/MIN & Data Hold: capture peak levels and freeze readings.
• 2.4-inch backlit display: clear visibility in low-light environments.
• Auto power-off: ~10 minutes.
• Low battery indicator.

Technical Specifications

• Model: GD151B
• Sound Measurement Range: 30–130 dB
• Frequency Range: 30 Hz – 8 kHz
• Dynamic Range: 50 dB
• Accuracy: ±1.5 dB @ 1 kHz (94 dB); ±5 dB @ 8 kHz (94 dB)
• Frequency Weighting: A & C
• Time Weighting: Fast (125 ms) / Slow (1 sec)
• Microphone: Electret condenser
• Temperature Range: –20°C to 60°C (–4°F to 140°F)
• Temperature Accuracy: 0°C–45°C: ±1°C / 2°F; Others: ±1.5°C / 3°F
• Humidity Range: 0.0%–99.9% RH
• Humidity Accuracy: 20%–80%: ±5 RH; Others: ±6 RH
• Operating Environment: 0–50°C,