Overview
Sound Level Meter is designed to be compact, lightweight and easy to use. It helps to maintain a comfortable sound environment, by evaluating environmental noise such as traffic or industrial equipment, and by providing a better understanding of working conditions. The 4431 comes in two versions. The 4431-1G features an innovative, unique 0-dB feature that eliminates the self- noise of the microphone. This technology extends the lower limit of the measurement range to lower than 0dB-SPL.
Features
- 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
- Add additional functions with the program cards
Technical Specifications
| Weighting | A, C and Z (FLAT) |
| Ranges | A: 28 dB to 130 dB (0 to 80dB if 0 dB function is active) C: 36 dB to 130 dB Z (FLAT): 40 dB to 130 dB C peak: 55 dB to 141 dB Z (FLAT) peak: 60 dB to 141 dB |
| Time Weighting | Fast, Slow, Impulse |
| Parameters | Sound 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) |
| Standards | ANSI S1.4 1983: Type 2 IEC 61672-1: Class 2 |
| Interface | USB, Printer |
| Output | 1 Vrms (AC output) 2.5 V (DC output) |
| Power Supply | 4 AA Batteries or AC adapter |
| Operating Environment | 14 °F to 122 °F (-10 °C to 50 °C), 30% to 90% RH with no condensation |
| Dimensions | (86.36 mm x 327.66 mm x 48.26 mm) 3.4 in x 12.9 in x 1.9 in |
| Weight | 1 lb (453 g) |
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