Promax SC-102 基本声级计/ 2 级/ 数字（66-140 dB）

Measurement range

For LF, LS, LT and Lt: 

- Upper limit: 137 (A weighting) // 137 (C weighting)

- Lower limit: 27.8 (A weighting) // 29.6 (C weighting)

For Lpeak Linear margin of measurement: 66-140 dB

Noise

- Electrical noise

Maximum: 20.2 (A weighting) // 22.2 (C weighting)

Typical: 14.5 (A weighting) // 16.7 (C weighting)

- Total noise (electrical + thermal microphone)

Maximum: 29.8 (A weighting) // 34.1 (C weighting)

Typical: 25.7 (A weighting) // 29.7 (C weighting)

Peak detector Lpeak

Onset time constant: < 75 µs

Microphone 1/2" condenser microphone with preamplifier incorporated.

- Equivalent impedance: 3000 Ω

- Nominal sensitivity: 16 mV/Pa in reference conditions

Frequency weighting: Complies with standard IEC 61672 class 2. A and C weightings

Time weighting: LF, LS, conforms to class 2 tolerances

Resolution: 0.1 dB

Influence of vibrations: For frequencies from 20 to 1000 Hz and 1 m/s2: <75 dB(A)

Power supply: Two 1.5 V AA (LR6) batteries

Typical duration: 24 h (with continuous use)

Dimensions: 82 mm (W.) x 291 mm (H.) x 20 mm (D.)

Weight: 463 g (with batteries) / 413 g (without batteries)

Datasheet