1Performance
HY126 handheld sound level meterIts performance meets national standardsGB/T 3785－2010And standardsIEC 61672:2013The Sound Level Meter1levelXThe requirements of the class integral average sound level meter are also metGB/T 15952-2010/IEC 61252：2002The requirements of the Personal Voice Exposure Meter Specification.24hSound environment measurement meets the requirementsGB 3096-2008Environmental Quality Standards for NoiseHJ 640－2012Technical Specification for Environmental Noise Monitoring The requirements of routine monitoring of urban acoustic environment. The coding of environmental monitoring points complies withHJ 661-2013The requirements of the "Code Rules for Environmental Noise Monitoring Points". It is suitable for on-site measurement of mechanical and electrical product noise, environmental noise, traffic noise, industrial hygiene, and workplace noise.
HY126 handheld sound level meterIt is a digital multifunctional sound level meter that features integral averaging, statistical analysis, and24hMeasure three modes and design multiple acoustic evaluation metrics for measuring various types of noise, including time weighted sound level, time averaged sound level, sound exposure level, cumulative percentage sound level, sound exposure, and noise dose.
2、 Main technical parameters and performance
2.1Performance level:GB/T3785andIEC616721level.
2.2Measured evaluation quantity:L_P、L_eq、L_AE、L₅、L₁₀、L₅₀、L₉₀、L₉₅、L_max、L_min、L_Cpeak, E_AWaiting for parameters.
2.3, transmission sound Tool:HY207type1Grade engineering measurement microphone, nominal diameter12.7 mmFree field type frequency response. The nominal sound pressure sensitivity is50 mV/PaThe nominal sound pressure sensitivity level is-26 dBThe reference value is1 V）.
2.4Frequency range:10 Hz～20 kHz.
2.5Frequency weighting:ACalculation rightsCCalculation rightsZCalculation rights.
2.6Time weighting:F(fast response)、S(slow response)、I(Pulse response).
2.7Measurement range:ASound level:30 dB～130 dB；CSound level:40 dB～130 dB；ZSound level:45 dB～130 dB.
2.8、24hMeasurement: day night equivalent sound level, day night equivalent sound level, hourly equivalent sound level.
2.9Automatic calibration range:±4.5dBThe reference value is50mV/Pa）.
2.10Display:128×64Dot matrix LCD display（LCD）, resolution0.1dB,It has signs such as overload, under range, and low battery voltage alarm.
2.11Digital output: The output connector isDB9Type male head (needle type),RS232Serial communication port, outputASCIICode, modulation rate (baud rate) is9 600 Bd, can be externally connectedRD-V32-SNPortable micro thermal printer.
2.12Analog output: direct logarithmic voltage and AC linear voltage.
2.13Memory:8GB，SDCard.
2.14Power supply:2jointLR6type(5name)Battery, capable of continuous operation under reference environmental conditions24h.
2.15External dimensions：long×wide×thick210mm×68mm×31 mm.
2.16、 Weight:210g.
2.17Operating temperature range: -10℃～50℃.