Sound level meter complies with national standards

Description :

Qingdao Lubo recommends instruments for disease control projects. The manufacturer has supplied equipment for multiple disease control projects in Jiangxi, Heilongjiang, Inner Mongolia, Guangxi, Yunnan, Henan, and other regions. Multiple regions have already purchased and used the equipment. Welcome to inquire about more equipment. The manufacturer looks forward to cooperating with you.

HY128C sound level meter

　　Main purpose and scope of application

　　The HY128C sound level meter is a digital multifunctional sound level meter designed to measure various acoustic evaluation quantities such as frequency weighted and time weighted sound pressure levels, equivalent continuous sound levels, sound exposure levels, statistical sound levels, etc. It has three working modes for users to choose from: integral averaging, parallel measurement, and statistical analysis. The instrument also provides low-frequency weighting options for secondary radiation noise measurement.

　　The HY128C sound level meter is a level 2 sound level meter that complies with the requirements of the national standard GB/T 3785.1-2010 and the international standards IEC 61672-1:2013 "Sound Level Meter", GB/T15952-2010, and IEC61252:2002 "Specification for Individual Voice Exposure Meter". The secondary radiation noise complies with the requirements of JGJ/T 170-2009 Standard for Limits and Measurement Methods of Building Vibration and Secondary Radiation Noise Caused by Urban Rail Transit, and the coding of environmental monitoring points complies with the requirements of HJ 661-2013 Code Rules for Environmental Noise Monitoring Points.

　　The HY128C sound level meter is a powerful and high-performance handheld instrument suitable for long-term, reliable measurement of various types of noise. This series of products has two types: explosion-proof and non explosion-proof. The explosion-proof type is divided into intrinsic safety explosion-proof and mining intrinsic safety explosion-proof. It comes with an 8GB SD card and comes standard with a size 5 battery for power supply. Users can also choose to use the power bank provided by the company for power supply according to their needs. The instrument also has functions such as recording, timed shutdown, GPS positioning, etc. It is suitable for on-site measurement of mechanical and electrical product noise, environmental noise, traffic noise, industrial hygiene, workplace noise, etc.

　　Main technical parameters

　　Microphone: HY205 pre polarized capacitive level 2 engineering measurement microphone, free field frequency response, nominal diameter 12.7 mm, nominal sound pressure sensitivity 50 mV/Pa (nominal sound pressure sensitivity level -26 dB, reference value 1 V).

　　Frequency range: 20Hz-16kHz.

　　Frequency weighting: A weighting, C weighting, Z weighting.

　　Time weighting: F (fast), S (slow), I (pulse).

　　Low frequency weighting: 16Hz~200Hz (for measuring secondary radiation noise)

　　Measurement range: 30dB (A) -130dB (A), 40dB (C) -130dB (C), 45dB (Z) -130dB (Z)

　　Performance level: Performance meets GB/T3785 and IEC61672 standardstwolevelThe requirements.

　　Pre set time: manually set, measurement duration is 3 seconds to 99 hours, 59 minutes, and 59 seconds.

　　Display: 128 × 128 dot matrix liquid crystal display (LCD) with a resolution of 0.1dB, displaying parameters such as Lp, Leq, LAE, L5, L10, L50, L90, L95, Lmax, Lmin, LCpeak, etc. It also has indicators such as overload, undervoltage limit, and low battery voltage.

　　Analog output: The output jack is a 3.5mm dual channel headphone jack with a minimum load impedance of 10 k Ω.

　　——DC voltage output: 15 mV/dB, ranging from 450 mV to 1950 mV throughout the entire measurement range (i.e. 1950 mV at the upper limit of 130 dB and 450 mV at the lower limit of 30 dB).

　　——AC voltage output: The output voltage is linearly related to the measured sound pressure, corresponding to the upper limit of the measurement range. The root mean square value of the output voltage is 2.0V.

　　Data output connector: USB Type-B socket for data output, which can be connected to the upper computer program for data processing, or directly transmitted to the computer by issuing commands.

　　Print output connector: The output connector is DB9 type male head (pin type), RS232 serial communication port, outputs ASCII code, and is externally connected to RD-V32-SN portable micro thermal printer.

　　SD card: 8GB.

　　Power supply: 2 No. 5 batteries or a dedicated power bank provided by the company for this product.

　　External dimensions：Length x width x thickness 210mm x 68mm x 31mm.

　　Weight: 210g.

　　Operating temperature range: 0 ℃ to 40 ℃.

Qingdao Lubo Environmental Protection provides after-sales and technical support for products!

AfterSalesService :

• sound level meter