HY104 sound level meter Introduction: The HY104 sound level meter is a hand-held instrument whose performance complies with the requirements of the national standard GB/T 3785-2010 and the international standard IEC 61672:2013 "Sound Level Meter" for Class 2 X-class sound level meter. It is suitable for electromechanical. On-site measurement of product noise, environmental noise, traffic noise, workplace noise, etc. Technical Parameters: Performance level: GB/T3785 and IEC61672 Level 2. The measured evaluation amount: LP (time weighted sound level), Lmax (maximum time weighted sound level) Microphone: HY205 2-stage engineering measuring microphone with nominal diameter 12.7 mm, free field frequency response. The nominal sound pressure sensitivity is 50 mV/Pa (nominal sound pressure sensitivity level is -26 dB, reference value is 1 V). Frequency range: 20 Hz to 16 kHz. Frequency weighting: A weighting, C weighting. Time weighting: F (fast response). Measurement range: A sound level: 30 dB ~ 130 dB; C sound level: 40 dB ~ 130 dB, divided into three levels: Low gear: 30 dB to 90 dB; Middle gear: 50 dB to 110 dB; High gear: 70 dB to 130 dB, hand selection. Display: 128 × 64 dot matrix liquid crystal display (LCD), resolution of 0.1dB, with overload, under range, battery voltage low alarm and other signs. Analog output: The output jack is a 3.5 mm two-channel headphone jack with a minimum load impedance of 10 kΩ. ——DC log voltage: The output voltage is related to the logarithm of the measured sound pressure. The output voltage is related to the stage range. The unit sound pressure output voltage is 30 mV/dB. Each stage ranges from +300 mV to -1500 mV, with the upper and lower boundaries corresponding to each stage range being -1500 mV and +300 mV, respectively. ——AC linear voltage: The output voltage is linearly related to the measured sound pressure, and the output voltage corresponding to the upper boundary of the stage range is 0.5 V. Power supply: 2 6F22 type 9 V laminated battery, can work continuously for 10 h under reference environmental conditions. Dimensions: length × width × thickness 256 mm × 74 mm × 25 mm. Weight: 500 g. Operating temperature range: 0 ° C ~ 40 ° C.
Introduction: The HY104 sound level meter is a hand-held instrument whose performance complies with the requirements of the national standard GB/T 3785-2010 and the international standard IEC 61672:2013 "Sound Level Meter" for Class 2 X-class sound level meter. It is suitable for electromechanical. On-site measurement of product noise, environmental noise, traffic noise, workplace noise, etc.
