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MEWOI-JY228 high noise level 20dB-144dB1/1OCT,1/3OCT,Type 1 Class 1 industrial grade Sound Level Tester with Printer
INTRODUCTION
MEWOI-JY228 (configuration 3) sound level meter is a digital multi-function sound level meter, designed to measure the frequency-weighted and time-weighted sound pressure level, equivalent continuous sound level, sound exposure level, statistical sound level of various noises. It has 7 working modes such as integral average, parallel measurement, statistical analysis, 24h measurement, 1/1 octave, 1/3 octave and indoor noise for users to choose. The instrument also provides optional low-frequency weighting, used for secondary noise measurement. The MEWOI-JY228 (configuration 3) sound level meter is a class 1 sound level meter, which complies with the national standard GB/T 3785.1-2010 and the international standard IEC 61672-1:2013 "Sound level meter", GB/T15952-2010 and IEC61252:2002 "Specifications for personal sound exposure meters", GB/T 3241-2010 and IEC 61260:2014 "Octave-band and fractional-octave-band filters". Structure-borne noise (indoor noise) meets the requirements of GB 22337-2008 " Emission Standard for community noise" and GB 12348-2008 " Emission Standard for industrial enterprises at boundary", and secondary noise meets JGJ/T 170-2009 "Standard for limit and measuring method of building vibration and secondary noise caused by urban rail transit", 24h noise monitoring meets the requirements of GB 3096-2008 "Environmental quality standard for noise" and HJ 640-2012 "Technical specifications for environmental noise monitoring – Routine monitoring for urban environmental noise", the coding of environmental monitoring points meets the requirements of HJ 661-2013 "Coding rules for monitoring point of environmental noise". The MEWOI-JY228 (configuration 3) sound level meter is a powerful, high-performance handheld instrument, suitable for long-term, reliable and accurate measurement of various noises. This series of products has two types of explosion-proof type and non-explosion-proof type. The explosion-proof type is divided in o intrinsically safe explosion-proof and mine intrinsically safe explosion-proof. It has an 8G SD card inside, and comes standard with AA battery power. At the same time, users can choose the power bank provided by the company to supply power according to their needs. The instrument also has functions, such as recording, timing shutdown, GPS positioning, Bluetooth, etc. It is suitable for field measurement of noise from mechanical and electrical products, environmental noise, traffic noise, industrial hygiene, and workplace noise. |
FEATURES
1,Permits choice : A-weighting, C-weighting, Z-weighting.F (fast), S (slow), I (impulse). |
2,Measurement parameters: Display Lp, Leq, LAE, L5, L10, L50, L90, L95, Lmax, Lmin, LCpeak and other parameters, can also display 1/3 octave and 1/1 octave frequency spectrogram. |
3,DC output :1 5 m V / d B. |
4,Memory: 8GB |
5,Measure range 30dB(A)-130dB(A), 40dB(C)-130dB(C), 45dB(Z)-130dB(Z) |
6,Built-in 1/3 octave and 1/1 octave. |
| 7,USB type B socket for data output, which can be connected to a PC program for data analysis. |
| 8,The output connector is DB9 male (pin type), RS232 serial communication port, ASCII code output, external RD-V32-SN portable mini thermal printer. |
TECHNICAL SPECIFICATION
Microphone: | HY207 pre-polarized capacitive class 1 project measurement microphone, free-field frequency response, nominal diameter 12.7 mm, nominal sound pressure sensitivity of 50 mV/Pa (the nominal sound pressure sensitivity level is -26 dB, reference to 1 V). |
Frequency range: | 10Hz-20kHz (class 1). |
Frequency weighting: | A-weighting, C-weighting, Z-weighting. |
Time weighting: | F (fast), S (slow), I (impulse). |
Low frequency weighting: | 16Hz～200Hz (for secondary noise measurement)
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Measuring range: | 30dB(A)-130dB(A), 40dB(C)-130dB(C), 45dB(Z)-130dB(Z) |
Performance class: | The performance of Class 1 sound level meter meets the requirements of GB/T3785 and IEC61672 Class 1. |
Preset time: | manually set, the measurement duration is 3 s～99 h 59 min 59 s. |
Display: | 128×128 dot matrix liquid crystal display (LCD), resolution 0.1dB, display Lp, Leq, LAE, L5, L10, L50, L90, L95, Lmax, Lmin, LCpeak and other parameters, can also display 1/3 octave and 1/1 octave frequency spectrogram. At the same time, it has signs of overload, under-limit, and low battery voltage. |
Filter: | Built-in 1/3 octave and 1/1 octave. |
11 1/1 octave filter midband frequencies: 16 Hz, 31.5 Hz, 63 Hz, 125 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, 4 kHz, 8 kHz and 16 kHz. | |
32 1/3 octave filter midband frequencies: 16 Hz, 20 Hz, 25 Hz, 31.5 Hz, 40 Hz, 50 Hz, 63 Hz, 80 Hz, 100 Hz, 125 Hz, 160 Hz, 200 Hz, 250 Hz, 315 Hz, 400Hz, 500Hz, 630Hz, 800Hz, 1 kHz, 1.25 kHz, 1.6 kHz, 2kHz, 2.5 kHz, 3.15 kHz, 4 kHz, 5 kHz, 6.3 kHz, 8 kHz, 10 kHz, 12.5 kHz, 16kHz and 20kHz. | |
Analog output: | Analog output: The output jack is a 3.5 mm dual-channel headphone jack, and the minimum load impedance is 10 kΩ. ——DC voltage output: 15 mV/dB, 450 mV～1950 mV in the whole measurement range, (that is, 1950 mV when the upper limit of the measurement range is 130 dB, and 450 mV when the lower limit is 30 dB). ——AC voltage output: The output voltage has a linear relationship with 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.
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Data output connector: | USB type B socket for data output, which can be connected to a PC program for data analysis. |
Print output connector: | the output connector is DB9 male (pin type), RS232 serial communication port, ASCII code output, external RD-V32-SN portable mini thermal printer. |
SD card: | 8G. |
Power supply: | 2 AA batteries or a special power bank provided by the company for this product. |
Dimensions: | L×W×H 210mm×68mm×31mm. |
Weight: | 210g. |
Operating temperature range: | Class 1 sound level meter: -10℃～50℃. |
Selection Guide
| Model No. | Applied Standards | Measured and evaluated items | Microphone | Frequency Weightings | Time Weightings: | Measuring Range | Screen | Integration | Threshold Setting | output |
| GB/T3785,Class 2; IEC61672,Class 2 | Lp , Lmax , Lmin, LCpeak . | Class 2 industrial measurement microphone, nominal diameter 12.7 mm | A,C | F(Fast) and S(Slow) | A:30-130dB,C:40-130dB | 128 *64 dot matrix liquid crystal display (LCD) | √ | Analog/Digital | |
| GB/T3785,Class 2; IEC61672,Class 2 | Lp , Lmax , Lmin, LCpeak . | Class 2 industrial measurement microphone, nominal diameter 12.7 mm | A,C | F(Fast) and S(Slow) | A:30-130dB,C:40-130dB | 128 *64 dot matrix liquid crystal display (LCD) | √ | Analog | |
| GB/T3785,Class 1; IEC61672,Class 1 | Lp , Lmax , Lmin, LCpeak . | Class 1 industrial measurement microphone, nominal diameter 12.7 mm | A,C | F(Fast) and S(Slow) | A:30-130dB,C:40-130dB | 128 *64 dot matrix liquid crystal display (LCD) | √ | Analog/Digital | |
| GB/T3785,Class 1; IEC61672,Class 1 | Lp , Lmax , Lmin, LCpeak . | Class 1 industrial measurement microphone, nominal diameter 12.7 mm | A,C | F(Fast) and S(Slow) | A:30-130dB,C:40-130dB | 128 *64 dot matrix liquid crystal display (LCD) | √ | Analog | |
| GB/T3785,Class 2; IEC61672,Class 2 | Lp , Lmax , Lmin, LCpeak . | Class 2 industrial measurement microphone, nominal diameter 12.7 mm | A,C | F(Fast) and S(Slow),Impulse | A:30-130dB,C:40-130dB,Z: 45dB～130 dB | 128 *64 dot matrix liquid crystal display (LCD) | √ | √ | Analog/Digital |
| GB/T3785,Class 1; IEC61672,Class 1 | LP、Leq、LAE、L5、L10、L50、L90、L95、Lmax、Lmin、LCpeak、ＥA | Class 1 industrial measurement microphone, nominal diameter 12.7 mm | A,C,Z | F,S,I | A:30-130dB,C:40-130dB,Z: 45dB～130 dB | 128 *64 dot matrix liquid crystal display (LCD) | √ | √ | Analog/Digital |
| GB/T3785,Class 1; IEC61672,Class 1 1/1 OCT 1/3 OCT 8GB,Printer | Lp, Leq, LAE, L5, L10, L50, L90, L95, Lmax, Lmin, LCpeak and other parameters | class 1 | A,C,Z | F,S,I | A:30-130dB,C:40-130dB,Z: 45dB～130 dB | 128 *128 (LCD) | Analog/Digital | ||
 MEWOI-6636-0 | GB/T3785,Class 2; IEC61672,Class 2 | Lp、Lmax | class 2 | A | F、S | 35~130 dBA | 3 1/2 LCD | Analog/Digital | ||
 MEWOI-6636-1 | GB/T3785,Class 2; IEC61672,Class 2 | Lp、Lmax | class 2 | A,C,Z | F、S | 35~130 dBA | 128 *64 dot matrix liquid crystal display (LCD) | √ | Analog/Digital | |
 MEWOI-6636-2 | GB/T3785,Class 2; IEC61672,Class 2 | Lp、Lmax、Lmin、SEL、E、Leq,T、Tm | class 2 | A,C,Z | F、S | 35~130 dBA | 128 *64 dot matrix liquid crystal display (LCD) | √ | √ | Analog/Digital |
 MEWOI-6636-3 | GB/T3785,Class 2; IEC61672,Class 2 | Lp、Leq1s、Lmax | class 2 | A,C,Z | F、S、I | 35~130 dBA | 128 *64 dot matrix liquid crystal display (LCD) | √ | √ | Analog/Digital |
 MEWOI-6636-4 | GB/T3785,Class 2; IEC61672,Class 2 | LFp、LSp、LIp、Leq,t、Lpeak、Leq,T、LFmax、LFmin、LSmax、LSmin、LImax、LImin、SEL、Lex8h、LAVG、TWA、DOSE、L5、L10、L50、L90、L95、SD、E. | class 2 | A,C,Z | F、S、I、Peak | 35~130 dBA | 128 *64 dot matrix liquid crystal display (LCD) | √ | √ | Analog/Digital |
| IEC 651.2, ANSI 1.4.2 | Lp , Leq,Lmax , LN | class 2 | A,C,F | F、S | A:30-130dB,C:35-130dB,F(40-130dB) | 128 *64 dot LCD | √ | Analog/Digital |
