Sound level Meter 4431
Precision Sound Level Meter with 0-dB function

Features
  • Lightweight and compact design
  • A, C, and F weig hting 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

This sound level meter is designed to be compact, lightweight and easy to use. It complies with the type 2 ANSI S1.4 1983 standard , and has an innovative, unique 0-dB feature that eliminates the selfnoise of the microphone. This technology extends the lower limit of the measurement range to lower than 0 dB-SPL.

Applications:

  • Industrial Hygiene Investigations
  • Noise Exposure Measurement
  • Environmental Noise Measurement
Parameters
Lp, LA, LAeq, LAE, LAmax, LAmin, LAN, Lpeak, LAtm5
Ranges A: 28 - 130 dB, Z 39 - 130 dB
Weighting
A, C and Z
Time Response
Fast or Slow
Microphone
TYPE 7146nl (-28dB, Stand-alone -26dB)
Standards
Type 2 (4431)
standards for ANSI S1.4 1983, IEC 61672-1

Power Supply
4 AA Batteries or optional AC Adapter (Battery life: approx. 9 hours)
Size & Weight
W3.4" x H12.9" x D1.9", Approx 1 lb.

Ships with:
SD card for data storage, windshield, carrying case, AA batteries, hand strap, and calibration certificate

Ordering information
Part No   Price
4431-0G sound meter $2200.00
4431-1G sound meter with 0db $2400.00

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