Features:
- Octave band
- Optional third octave band
- Class 2
- Frequency weighting: A, B, C & Z
- Time weighting: Fast, Slow, Impulse, and Peak
- Statistical function
- Graphic display
- 3 measurement profiles
- Own noise reduction
- ICCP microphone 40 mV/PA
- Alarm level setting

 

Measurement range	25 ... 136 db(A)
Accuracy	Class 2
Frequency range	20 Hz ... 12.5 kHz
Standards	GB/T3785.1-2010 GB/T3785.2-2010 IEC60651:1979 IEC60804:2000 IEC61672-1:2013 ANSI S1.4-1983 ANSI S1.43-1997
Frequency analysis	Octave band filter: 20 Hz ... 8 kHz Third octave band filter: 20 Hz ... 12.5 kHz (optional)
Microphone	1/2" Class 2 microphone Sensitivity: 40 mV/PA Frequency range: 20 Hz ... 12.5 kHz Connection: TNC Power supply: ICCP Standard
Integration time	1 s ... 24 h (adjustable)
Measurement 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 = Statistic in % : 1 ... 99%
24-hour measurement	Automatic measurement with data memory
Frequency weighting	A, B, C, Z
Time weighting	Fast (F), Slow (S), Impulse (I), Peak
Own 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
Sampling	Standard: 48 kHz LN mode: 20 ms
Value display	Numeric Bar graph Graphical
Display	Backlit LCD, 160 x 160 pixels
Memory	4 GB micro SD card
Interface	USB (allows reading values via software, or using as storage) RS-232
Voltage output	AC 5V RMS DC 10 mV/dB
Alarm	Adjustable
Power supply	4 x 1.5V AA batteries 12V / 1A power adapter 5V / 1A USB
Operating time with batteries	Min. 10 hours
Dimensions	70 x 300 x 36 mm (W x H x D)
Weight	Approx. 620 g (including batteries)

 

The PCE-428 sound level meter is an ideal measuring instrument for taking measurements in workplaces, construction sites, traffic, airports, etc. The PCE-428 sound level meter is a Class 2 device with an integrated octave band filter. Optionally, the PCE-428 sound level meter can be equipped with a third octave band filter. Results can be displayed numerically or as a graph. The sound level meter offers various frequency weightings: A, B, C, and Z. It also allows for various time weightings: Fast, Slow, Impulse, Leq. The measurement range is from 25 to 136 dBA, with a frequency range from 20 Hz to 12.5 kHz. You can set up to 3 measurement profiles. The operator can select the parameters to be measured, such as Laeq, LcPeak, LaFmax, LaFMin, etc.

The "Peak-Hold" function allows the determination of the peak value during a prolonged measurement and "freezes" it on the display. A 24 Bit AD converter and particularly developed electronics reduce the device's own noise to a very low level. The signal sampling rate of over 48 kHz ensures high accuracy and better stability of the measurement value.

 

1 x PCE-428 sound level meter
1 x 1/2" Class 2 microphone
1 x Windshield filter
1 x USB cable
1 x Software
1 x Power supply
1 x Carrying case
User manual (available for download)

Note: We ship the sound level meter with an octave band filter. Optionally, it can be upgraded with a third octave band filter.