Sound Meter – Model 4431

Highly accurate sound meter

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The Kanomax Sound Meter – Model 4431-1G is the world’s first 0-dB function sound meter available. It is designed to meet Type 2 standards for ANSI S1.4 1983 and IEC 61672-1. The magnetic accelerometer easily attaches to machinery for increased accuracy and precise operation.

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  • Lightweight and compact design
  • A, C, and F weighting modes
  • 28 to 130 dB measurement range
  • Measures Lp, Leq, Le, Lmax, Lmin and Lx
  • Equipped with highly sensitive electret condenser microphone
  • Large 4 digit display with 0.1 dB resolution with backlighting and analog bar graph
  • Add additional functions with the program cards
  • Includes SD card for data storage, windshield, carrying case, AA batteries, hand strap, and calibration certificate
  • Industrial Hygiene Investigation
  • Noise Exposure Measurement
  • Environmental Noise Measurement

Main Unit Specifications
WeightingA, C and Z (FLAT)
RangesA: 28 to 130 dB (0 to 80 BD if 0dB function is active for 4431-1G)
C: 36 to 130 dB
Z (FLAT): 40 to 130 dB
C peak: 55 to 141 dB
Z (FLAT) peak: 60 to 141 dB
Time WeightingFast, Slow, Impulse
ParametersSound pressure level(Lp)
A-weighted sound pressure level(LA)
C-weighted sound pressure level(LC)
Equivalent continuous A-weighted sound pressure level(LAeq)
Sound Exposure level(LAE)
Maximum sound pressure level(LAmax)
Minimum sound pressure level(LAmin)
Percentile sound pressure level(5 freely selectable values、LAN)
Peak Sound Pressure level(Lpeak)
C- weighted Peak Sound Pressure level(LCpeak)
Power average of maximum sound pressure level in a given interval(LAtm5)
Impulse Sound pressure level(LAI)
Impulse equivalent continuous sound pressure level(LAIeq)
StandardsANSI S1.4 1983: Type 2
IEC 61672-1: Class 2
General Specifications
InterfaceUSB, Printer
Output1 Vrms (AC output)
2.5 V (DC output)
Power Supply4 AA Batteries or AC adapter
Operating Environment14 to 122°F (-10 to 50°C), 30 to 90%RH with no condensation
DimensionsW 3.4″ x H 12.9″ x D 1.9″
Weight1 lb (453g)
Warranty1 year
Standard AccessoriesOperation manual, SD card for data storage, Windshield,Carrying case, AA batteries, Hand strap, Calibration certificate

User Manual

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Data Sheet (English)

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  • Microphone with PreAMP (20 to 10,000dB): Model AC7052NR
  • Microphone without PreAMP (20 to 10,000dB): Model AC7052R
  • Windscreen Φ50: Model ACNA-0304
  • Windscreen Φ90: Model ACNA-0301
  • Weatherproof Screen Φ200 with Tripod: Model ACNA-0303
  • Weatherproof Screen Φ200 without Tripod: Model ACNA-0303
  • AC Adapter - AC 100 V Input. DC 6 V Output: Model AC-1026
  • Tripod EX630, Made by Velbon Corporation: Model ACNA-0333
  • 3m Microphone Cable: Model ACBC-0046-3
  • 5m Extension Cable: Model 3mACBC-0046-5
  • 10m Extension Cable: Model ACBC-0046-10
  • 20m Extension Cable: Model ACBC-0046-20
  • 30m Extension Cable: Model ACBC-0046-30
  • 50m Extension Cable with Reel: Model ACBC-0046-50
  • 100m Extension Cable with Reel: Model ACBC-0046-100
  • 200m Extension Cable with Reel: Model ACBC-0046-200
  • 300m Extension Cable with Reel: Model ACBC-0046-300
  • BNC-Pin Cable 1.5m: Model ACBC-0071
  • Acoustic Calibrator 94 dB, 1 kHz: Model AC2127
  • PC Communication Cable USB Type: Model ACBC0038PC
  • Communication Cable for Printer ACBS2-80TS, RS232C Type: Model ACBC0026
  • 1/1 and 1/3 Octave Real-time Analyzer Card: Model ACNA-0038
  • Real Sound Recording Card: Model ACNA-0038R
  • FT Analyzer Card: Model ACNA-0038FF
  • Printer RS232C Type: Model ACBS2-80TS
  • AC Adapter for Printer: Model AC-1016
  • Roll Paper for Printer: Model ACBS-80-15
  • Data Processing Software within USB Cable: Model ACNA-0038M
  • Correction Function 0dB: Model AC6236-0dB

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