Hangzhou Aihua AWA14400 series

Test microphone is a precision acoustic measurement using sound - electric transducer for converting acoustic signals into electrical signals. Diaphragm using nickel and nickel alloy casing, and exceptional stability treatment, with a wide frequency range, good frequency, wide dynamic range, good dynamic characteristics, good temperature and long-term stability. Wherein the pre-polarized condenser microphone test, since no additional polarization voltage, the circuit is simple, use more widely. Features: ● Overall and installation dimensions and key performance meets the IEC 61094-4 and GB / T 20441.4 standard; ● can directly replace imported equipment from other manufacturers and the corresponding test microphone; ● Operating temperature range: -20 ℃ ~ +70 ℃ Technical Performance: Model Diameter Nominal sensitivity (mV / Pa) polarization voltage (V) Frequency Range (Hz) frequency response characteristics of dynamic range (dB) * Capacitance (pF) temperature coefficient (dB / ℃) structure size characteristics 14401 Φ23 .7 7 mm (1 ";) 50 200 10 ~ 18,000 free field 12 ~ 140 50 0.01 WS1 Precision Acoustic Measurement 1,440,210 ~ 8,000 sound pressure 14403 Φ12.7 mm (1/2";) 15 20 ~ 40,000 free field 30 ~ 160 18 WS2 Precision Acoustic Measurement 1,440,420 to 12,000 sound pressure 14405 Φ6.35 mm (1/4 ";) 3.5 10 ~ 70,000 free field 40 ~ 160 6.5 WS3-frequency and high sound level measurements 14406 2.5 10 ~ 40,000 sound pressure 40 ~ 160 14413 Φ12.7 mm (1/2 ";) 4.5 28 20 ~ 12,500 free field 45 ~ 160 21 WS2 type general acoustic measurements 14411 Φ23.77 mm (1";) 100 0 10 ~ 16,000 free Field 10 ~ 134 35 0.02 WS1 type low sound level measuring 1,441,210 ~ 8,000 sound pressure 0.02 14421 Φ12.7 mm (1/2 ";) 30 20 ~ 12,500 free field 20 ~ 142 17 0.02 WS2 Type 2 Sound Level Meter 14422 20 - 10,000 15 0.02 acoustic coupling acoustic pressure chamber with 144,235,010 to 20,000 free field from 16 to 14 019 0.01 1 sound level meter 144,254,010 ~ 16,000 free field level of 17 to 140 201 14 427 12.5 10 ~ 16,000 sound level meter free Field 27 to 15 015 0.02 2 Sound Level Meter 14431 Φ6.35 mm (1/4 ";) 4 10 ~ 70,000 free field 40 ~ 160 6 0.01 WS3-frequency and high sound level measurements 1,443,210 to 40,000 sound pressure 14435 10 ~ 20,000 free field * distortion (dB, referenced to 20 μPa) from the A-weighted noise floor to 3%