A. Precautions:
Please read this operation manual carefully before using this
equipment for correct operations. This equipment has been
designed to meet the measurement requirement of Safety
Engineers, Health, Industrial Safety offices and Sound Quality
control in various environments.
B. Features:
1) This unit was designed according to the IEC651 TYPE 2 &
ANSI S 1 .4 TYPE 2 for sound level meters.
2) Instantaneous level measurement.
3) Measurement range: 30-130 decibel
4) With two equivalent weighted sound pressure levels, A and C.
5) Fast & Slow modes.
6) AC and DC signal output for frequency analyzer and level
recorder, FFT analyzer, graphic recorder etc.
C. Specifications:
1) Accuracy: 1.5 dB (under reference conditions)
2) Frequency range; 31.5KHz 8.5KHz
3) Linearity range: 50dB
4) Measuring level: 30 130 dBA, 35-130 dBC
5) Frequency weighting:. A, C
6) Digital display: 5 digits
Resolution: 0.1dB
7) Bar graph; 50dB scale at 1 dB step for monitoring current sound
pressure level display period: 50 mS
8) level ranges: 30-80 dB: 50-100 dB;
60-110 dB; 80-130 dB;
9) Over range indicator:
Under indicator.
10) AC output: 0.707 Vrms at FS output impendence approx 600
11) DC output: 10 mV / dB output impedance approx 1000
12) Time weighting: Fast, Slow
13) Microphone: 1/2 inch Electret Condenser microphone
14) Max: Maximum hold
15) Power supply: 1 *9V alkaline cells or DC 9V adapter Power
life: About 30 hrs (alkaline coils)
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