1,Performance grade: equivalent to the class 2 sound level meter conforming to gb/t 3785.1-2010 electroacoustic sound level meter part 1: specification. |
2,Microphone: Class 2 Ф12.7mm(1/2″) pre polarization test capacitor microphone with sound pressure sensitivity of 50mv/pa (the pressure sensitivity level is -26db and the reference is 1 V). |
3,Frequency range: 20hz-12.5khz. |
4,Frequency weight: A, C, Z. |
5,Time calculation right: F, s, i. |
6,Exchange rate: default is 3, and can be set to 4 or 5.
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7,Sound level measurement range: 35dba-130dba, 40dbc-130dbc, 45dbz-130dbz.
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8,Automatic calibration: range ± 5dB (reference sound pressure sensitivity is 50mv/pa). |
9,Measurement range of acoustic exposure: 0.001 pa2s-999 pa2s and 0.278 pa2h-999pa2h, automatic conversion unit; |
10,Measurement range of noise dose: 0.001% ~ 9999%; |
11,Measurement range of sound exposure level: 37.0dba-199.9dba, 47.0dbc-199.9dbc, 52.0dbz-199.9dbz. |
12,Normalized 8-hour measurement range: 0.0 db-130.0 DB |
13,Measurement range of standard deviation: 0.0 db-50.5 dB. |
14.11 Built in 28pcs 1 / 3 octave filters, center frequency: 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, 400 Hz, 500 Hz, 630 Hz, 800 Hz, 1 kHz, 1.25 kHz, 1.6 kHz, 2 kHz, 2.5 kHz, 3.15 kHz, 4 kHz, 5 kHz, 6.3 kHz, 8 kHz and 10 kHz. |
15. Main display: 0.96 inch (128 × 64) dot matrix LCD display, showing LP, 1sleq, Leq, Lae, NDA, L5, L10, L50, L90, L95, Lmax, lmin and SD, and other parameters, and it also has overload, under quantity limit, battery voltage low drop and other indicators. |
16. Time setting: user defined time (3S ~ 99h59min59s) |
17. SD card: 8g. |
18. Data output connector: data output type-C socket, which can be connected to PC program for data analysis. |
19. Print output: Bluetooth mode, which can connect the printer provided by the company to print the measurement results. |
20. power supply: built in lithium battery, which can work continuously for more than 24 hours. |
21. Overall dimension: length × width × thickness 105mm × 52mm × 33 mm. |
22. Enclosure: flame retardant enclosure. |
23. Weight: 220g. |
24. Operating temperature range: 0 ℃ ~ +40 ℃. |