This instrument adopts advanced digital filtering and digital detection technology (frequency weighted ACZ and time weighted FSI are both calculated through digital filtering and digital detection), which can simultaneously measure (in parallel) and display the sound levels of different time weights (Fast, Slow, Impulse, Peak) and different frequency weights (A, C, Z) (Peak only works at C weight). It has the advantages of high reliability, good stability, and wide dynamic range. This instrument adopts a 160 × 160 dot matrix LCD display with background light display. It has two operation interfaces in Chinese and English, with rich display content and easy user operation. The measurement results can be stored in the instrument for a long time, and can be printed on site or later using a micro printer or sent to a computer for processing through the built-in RS-232 interface.
This instrument has a compact structure, beautiful appearance, multiple functions, and high degree of automation. It can be widely used in fields such as environmental protection, labor hygiene, industrial enterprises, scientific research and teaching.
1. The measurement accuracy shall comply with GB/T3785 (IEC61672) level 2.
2. When the dynamic range is greater than 100dB, there is no need to convert the measurement range during measurement.
3. It can simultaneously measure three frequency weights A, C, and Z, and three time weights F, S, and I.
4. Peak noise can be measured according to the peak Cpeak sound level of the new national standard.
5. It can simultaneously measure and display 10 measurement indicators, and also display graphics.
6. Complete digital signal processing, wide frequency response range, large dynamic range, and lower background noise.
7. Display the time-domain curve of the noise while measuring it.
8. Large capacity MicroSD card (TF card) storage, USB interface and RS232 interface.
9. The instrument is equipped with a 2M capacity FLASH memory inside.
1. Execution standard: GB/T3785-2010 (IEC61672:2002) Level 2
2 microphones: Φ 12.7mm (1/2 ") pre polarized test condenser microphone
3 frequency range: 20Hz~12.5kHz
Measurement range: 25dB~130dB (A), 25dB~130dB (C), 30dB~130dB (Z)
5 Dynamic range: greater than 100dB (weighted by A)
6 Frequency Weighting: Parallel (Simultaneous) A, C, Z Weighting
7-time weighting: parallel (simultaneous) fast (F), slow (S), I (pulse), and Cpeak
8 Detector Characteristics: Digital Detection Technology
9 A/D bits: 24 bits
10 Sampling frequency: 48kHz
11 Display: 160 × 160 dot matrix LCD display with LED backlight.
12 level range: divided into high and low levels, with a linear range of ≥ 100dB.
High: 30dB~130dB Low: 25dB~110dB
LCpeak: High: 70dB~133dB Low: 50dB~113dB
Main display content: It can simultaneously measure and display 10 measurement indicators or statistical distribution maps, cumulative distribution maps, 24-hour distribution maps, and calculated values of L1~L99.
14 Measurement time setting: Single group measurement time can be selected as 10s, 1min, 5min, 10min, 15min, 20min, 30min, 1h, 8h, 24h. Man (set manually within 24 hours).
15 main measurement indicators: Lxyi, Lxyp, Lxeq, Lxae, Lxmax, Lxmin, LxN, SD, E (DI%). X is A, C, Z, Y is F, S, I, N is 5, 10, 50, 90, 95
16 Data Storage: Only F1ash can store 3000 sets of single measurement results or 200 sets of hourly measurement results.
If an SD card is added, the storage capacity can be expanded to a maximum of 2G. It can store more measurement data.
17 Data processing software: Use HS7001 software to read data and SD card data files, perform post-processing analysis, and output reports.
18 Data export: The instrument F1ash and SD card data can be output through the RS-232 interface, and can also be read through the USB interfaceRetrieve data files from the SD card.
19 outputs: AC output, RS-232 port, USB port.
20 power supply: 7.5V (5 LR6/AA/AM3 5th alkaline batteries) can work continuously for 24 hours.
21 Dimensions: 1 × b × h (mm) 290 × 82 × 40
22 Quality: 400g (excluding battery)
Working temperature: -10 ℃~50 ℃, relative humidity 20%~90%
