ຮັບສ່ວນຫຼຸດພິເສດຕາມປະລິມານ, ອັບເດດລາຄາຂາຍສົ່ງ ແລະ ການແຈ້ງເຕືອນສິນຄ້າໃໝ່ສົ່ງກົງເຖິງອິນບັອກຂອງທ່ານ.
ໂດຍການສະໝັກສະມາຊິກ, ທ່ານຍອມຮັບ ເງື່ອນໄຂການໃຫ້ບໍລິການ ແລະ ນະໂຍບາຍຄວາມເປັນສ່ວນຕົວ ຂອງພວກເຮົາ.
ເຂົ້າເຖິງຜູ້ຊ່ຽວຊານທີ່ໄດ້ຮັບການຢັ້ງຢືນຂອງພວກເຮົາໂດຍກົງ
Specification
Meter specifications (PCE-428)
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
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 1.5 V AA Batteries
12 V / 1 A Power plug
5 V / 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" (W x H x D)
Weight: Approx. 620 g / 1.4 lbs incl. batteries
Acoustic calibrator specifications (PCE-SC 42)
Frequency: 1 kHz / ± 0.1 %
Sound pressure levels: 94 decibels (dB) and 114 dB
Accuracy: ± 0.3 dB (at 20 °C / 68 °F and 760 mm Hg / 101325 Pa)
Microphone: 1/2 " and 1 " microphone opening
Standard: IEC 942 class 2
Power supply: 1 x 9 V battery (block, NEDA 1604, Burgess 2U6 or similar)
Battery life: Approx. 100 hours
Environmental conditions: -10 ... +50 °C / +14 ... +122 °F
Storage conditions: -40 ... +65 °C / -40 ... +149 °F (remove battery beforehand)
Temperature coefficient: 0 ... 0.01 dB / °C
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)
Dimensions: Approx. 48 x 48 x 138 mm / 1.89 x 1.89 x 5.43"
Weight: Approx. 250 g / 0.56 lb
Delivery contents
1 x PCE-428 class 2 data-logging noise meter / sound meter kit
1 x microphone
1 x wind noise suppressor (foam ball)
1 x USB cable
1 x PC software
1 x power supply
1 x user manual
1 x meter factory calibration certificate according to ISO 9001
1 x carrying case
1 x PCE-SC 42 acoustic calibrator
1 x 9 V battery for calibrator
1 x calibrator factory calibration certificate according to ISO 9001
1 x calibrator user manual
