Introduction: The HY104C sound level meter is a hand-held instrument with standard extension cable. Its performance meets 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. The sound level meter preamplifier is set to be pullable, and the microphone and the sound level meter main body can be easily connected by an extension cable to keep the measurer away from the noise source. It is suitable for on-site measurement of mechanical and electrical noise, environmental noise, traffic noise, workplace noise and so on. Technical Parameters 1. Performance level: GB/T3785 and IEC61672 Level 2. 2. The measured evaluation quantity: LP (time weighted sound level), Lmax (maximum time weighted sound level) 3, the microphone: HY205 type 2 engineering measurement microphone, 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). 4. Frequency range: 20 Hz to 16 kHz. 5. Frequency weighting: A weighting and C weighting. 6, time weighting: F (fast response). 7. Measurement range: A sound level: 30 dB to 130 dB; C sound level: 40 dB to 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. 8, display: 128 × 64 dot matrix liquid crystal display (LCD), resolution of 0.1dB, with overload, under range, battery voltage low alarm and other signs. 9. 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 independent of the stage range. The unit sound pressure output voltage is 15 mV/dB. The upper and lower boundaries of the corresponding total range are 1950 mV and 450 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. 10. Power supply: 4 R6 type (5th) batteries, which can work continuously for 16 hours under reference environmental conditions. 11. Extension cable: HY7017 extension cable, standard 3m, can be customized by users, up to 50m. 12. Dimensions: length × width × thickness 276 mm × 74 mm × 25 mm. 13, weight: 520g. 14, working temperature range: 0 ° C ~ 40 ° C.
Introduction: The HY104C sound level meter is a hand-held instrument with standard extension cable. Its performance meets 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. The sound level meter preamplifier is set to be pullable, and the microphone and the sound level meter main body can be easily connected by an extension cable to keep the measurer away from the noise source. It is suitable for on-site measurement of mechanical and electrical noise, environmental noise, traffic noise, workplace noise and so on.
