PCE 428 Class 2 Decibel Sound Meter (25 - 136dB)

Highlights: Measures from 25 - 136 db(A) at a frequency of 20 Hz - 12.5 kHz Portable High-accuracy 1/1 octave band filter (optional 1/3 octave band filter upgrade) The PCE 428 Class 2 Decibel Sound Meter (25 - 136dB) meets IEC 60651:1979, IEC 60804:2000, IEC 61672-1:2013, ANSI S1.4-1983 and ANSI S1.43-1997 requirements. This portable, high-accuracy sound level meter has a large easy-to-read light-up LCD screen that displays the sound pressure level (SPL) numerically & graphically in real time. Thanks to octave band filtering, even the slightest difference in frequency is detected. This handheld sound meter also functions as a data logger, recording measurements at an adjustable interval from 1 s - 24 h and storing the recorded measurement data to a micro SD card. The card can be removed from the meter and inserted into a PC. Alternatively, the decibel meter can be connected directly to a PC via USB. The provided PC-compatible software allows for quick and easy data analysis. This device measures from 25 - 136 db(A) at a frequency of 20 Hz - 12.5 kHz. The meter features A, B, C and Z frequency weightings as well as fast, slow and impulse time weightings. The PCE-428 decibel meter is commonly used by professionals to ensure compliance with environmental noise regulations and workplace noise permissible exposure limits. Features:  Accuracy class 2 A, B, C and Z frequency weightings Fast, slow and impulse time weightings 1/1 octave band filter (optional 1/3 octave band filter upgrade) Adjustable data-recording interval from 1 s ... 24 h Real-time numerical and graphical LCD display Adjustable alarm Specifications: Measuring range: 25 - 136 db(A) Accuracy: Class 2 Frequency range: 20 Hz - 12.5 kHz Standards: GB/T 3785.1-2010 GB/T 3785.2-2010 IEC 60651:1979 IEC 60804:2000 IEC 61672-1:2013 ANSI S1.4-1983 ANSI S1.43-1997. Frequency analysis: 1/1 Octave band filter: 20 Hz - 8 kHz 1/3 Octave band filter: 20 Hz - 12.5 kHz Microphone: 1/2" Microphone Class: 2 Sensitivity: 40 mV/PA Frequency range: 20 Hz - 12.5 kHz Connection: TNC Power supply: ICCP Standard Data-logging interval: 1 s ... 24 h (adjustable) Measuring functions: LXY (SPL), LXeq, LXYSD, LXSEL, LXE, LXYmax, LXYmin, LXPeak, LXN X = Frequency weighting: A, B, C, Z Y = Time weighting: F, S, I N = Statistics in %: 1 ... 99% Frequency weightings: A, B, C, Z Time weightings: Fast (F) 125ms, Slow (S) 1 sec, Impulse (I) 35 ms Inherent noise: Microphone: 20 db(A), 26 db(C), 31 db(Z) Electronics: 14 db(A), 19 db(C), 24 db(Z) AD converter: 24 Bit AD Sample rate: Standard: 48 kHz LN Mode: 20 ms Measuring display: Numerical Bar graph Graphical Display: 160 x 160 pixel LCD with backlight Memory: 4 GB Micro SD card Interface: USB (Memory readable via software or directly as mass storage) RS-232 Voltage output: AC 5V RMS DC 10 mV/db Alarm: Adjustable Power supply: 4 x 1.5V AA Batteries 12V / 1 A Power plug 5V / 1 A USB Battery life: Min. 10 h continuous use Dimensions: 70 x 300 x 36 mm / 2.76 x 11.81 x 1.42 in (W x H x D) Weight: Approx. 620 g / 1.4 lbs incl. batteries   What's included: 1 x Environmental Meter PCE-428 1 x Microphone 1 x Wind noise suppressor (foam ball) 1 x USB cable 1 x PC software is a free download 1 x Power supply 1 x User manual 1 x Carrying case Note: This meter comes standard with a 1/1 octave band filter. An optional 1/3 octave band filter upgrade is available for an additional fee  PCE-428 User Manual  PCE-428 Data Sheet Need more info? Please contact us or go to the PCE Resource Center.