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Meter specifications (PCE-428) |
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Measuring range
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25 ... 136 db(A)
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Accuracy
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Class 2
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Frequency range
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20 Hz ... 12.5 kHz
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Standards
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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
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Frequency analysis
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1/1 Octave band filter: 20 Hz ... 8 kHz
1/3 Octave band filter: 20 Hz ... 12.5 kHz
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Microphone
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1/2"
Microphone Class: 2
Sensitivity: 40 mV/PA
Frequency range: 20 Hz ... 12.5 kHz
Connection: TNC
Power supply: ICCP Standard
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Data-logging interval
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1 s ... 24 h (adjustable)
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Measuring functions
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LXY (SPL), LXeq, LXYSD, LXSEL, LXE, LXYmax, LXYmin, LXPeak, LXN
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X = Frequency weighting: A, B, C, Z
Y = Time weighting: F, S, I
N = Statistics in %: 1 ... 99 %
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Frequency weightings
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A, B, C, Z
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Time weightings
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Fast (F) 125ms, Slow (S) 1 sec, Impulse (I) 35 ms
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Inherent noise
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Microphone: 20 db(A), 26 db(C), 31 db(Z)
Electronics: 14 db(A), 19 db(C), 24 db(Z)
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AD converter
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24 Bit
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Sample rate
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Standard: 48 kHz
LN Mode: 20 ms
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Measuring display
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Numerical
Bar graph
Graphical
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Display
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160 x 160 pixel LCD with backlight
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Memory
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4 GB Micro SD card
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Interface
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USB (Memory readable via software or directly as mass storage)
RS-232
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Voltage output
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AC 5V RMS
DC 10 mV/db
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Alarm
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Adjustable
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Power supply
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4 x 1.5 V AA Batteries
12 V / 1 A Power plug
5 V / 1 A USB
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Battery life
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Min. 10 h continuous use
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Dimensions
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70 x 300 x 36 mm / 2.76 x 11.81 x 1.42" (W x H x D)
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Weight
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Approx. 620 g / 1.4 lbs incl. batteries
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Acoustic calibrator specifications (PCE-SC 42) |
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Frequency |
1 kHz / ± 0.1 % |
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Sound pressure levels |
94 decibels (dB) and 114 dB |
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Accuracy |
± 0.3 dB (at 20 °C / 68 °F and 760 mm Hg / 101325 Pa) |
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Microphone |
1/2 " and 1 " microphone opening |
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Standard |
IEC 942 class 2 |
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Power supply |
1 x 9 V battery (block, NEDA 1604, Burgess 2U6 or similar) |
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Battery life |
Approx. 100 hours |
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Environmental conditions |
-10 ... +50 °C / +14 ... +122 °F |
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Storage conditions |
-40 ... +65 °C / -40 ... +149 °F (remove battery beforehand) |
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Temperature coefficient |
0 ... 0.01 dB / °C |
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Altitude effect |
Reduction of approx. 0.1 dB per altitude gain from 2000 ft from the sea level up to 12000 ft or comparable changes of the atmospheric pressure (approx. at every decrease of 50 mm Hg)
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Dimensions |
Approx. 48 x 48 x 138 mm / 1.89 x 1.89 x 5.43" |
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Weight |
Approx. 250 g / 0.56 lb |