CRYSOUND CRY2831 声级计 (30dBA ~ 135 dBA; 20Hz~12.5kHz(±2dB))

Microphone

Microphone type: CRY321

Open circuit Sensitivity: 25mV/Pa(-32dB re 1 V/Pa)±2dB

Frequency range: 20Hz~12.5kHz(±2dB)

Self-generated noise level: 22dBA

Technical Specification

Linear Operating Range: 30dBA ~ 135 dBA

Frequency range: 20Hz~12.5kHz(±2dB)

Internal noise: ≤25dBA

Applicable standards: IEC61672-1: 2013 Class 2

Weighting filters: Frequency weighting: A, C

Time constants: Time Weighting: S, F

Measuring Parameter: Lp, Lmax

Measurement function: SLM

Communication Interfaces: AC/DC

Calibration

Reference Level: 94dB@1kHz

Calibration: Sound Calibrator Class 2 or Class 1

Environment: Temperature 23°C，Pressure 101.325kPa，Humility 50% RH

Power Supply

Battery: 4xAA battery

External Power Supply: 5V USB Type C

Ambient conditions for operation

Operating temperature range: -20~+60℃

Humidity range: ≤90% RH

Physical Weight: 300g (With battery)

Size: L*W*H=249x76x30.5mm

Display: 128*64，Dot Matrix LCD

Operation: Button