Application: it is used to calibrate the sound level meters.
This instrument is compatible with several standards of GB/ T 3785, IEC 651 Type 2, ANSIS 1.4 Type 2. It is widely used to test the sound level of environment, mechanic, vehicle, ship and other noise. Fit for industry environment protecting, working, sanitation, teaching search and other departments.
Display: 10mm (0.4') LCD (Liquid Crystal Display)
Function: LP , Leq , LN.
Frequency range: 31.5Hz~8kHz
LP: 30~130dB (A)
35~130 dB (F)
Leq : 30-130dB
LN .: 0-100%
Resolution: 0.1 dB
Memory: Maximum value (30groups)
Indicator: Low battery indicator
Power supply: 4x1.5v AAA (UM-4 battery
Size: 236 x 63 x26 mm
Weight: 170g (including batteries)
1. Main Unit-1pc
2. Carrying Case. . . . . . . . . . . . . . . . 1pc.
3. Operation Manual. . . . . . . . . . 1pc.
1. ND9 sound level meter calibrator
2. RS-232 and software
3. External rela
4. Bluetooth interface