Digital Sound Level Meter GM1357
This equipment has been designed to meet the measurement requirement of Safety Engineers, Health, Indu-
strial Safety offices and Sound Quality control in various environment, which include factory, office, traffic,
family, and audio system.
Features
Digital Sound Level Meter possesses the following features:
1. It is designed according to the IEC651 TYPE2 & ANSI S1.4 TYPE2
2. Accuracy up to +/- 1.5 dB
3. Measurement range: 30-130 dB
4. With two equivalent weighted sound pressure levels, A and C.
5. Fast & Slow dynamic characteristic modes.
6. AC and DC output for frequency analyzer level recorder, FFT analyzer, graphic recorder etc.
Specifications
| Measuring range | 30~130dBA、35~130dBC |
| Accuracy | +/- 1.5 dB (under reference conditions) |
| Frequency range | 31.5Hz~8.5KHz |
| Level range | 30~80,50~100,60~110,80~130, 30~130dB |
| Linearity range | 50dB / 100dB |
| Frequency weighting | A / C |
| Digital Display | 4digits |
| Resolution | 0.1dB |
| Sample rate | 2 times/second |
| Bar graph |
50 dB scale at 1 dB step for monitoring current sound pressure level display Sample rate: 20times/second |
| Over indication | OVER / UNDER |
| AC output |
0.707Vrms at FS output impedance approx. 600 ohm |
| DC output | 10mV/dB, output impendance approx. 100ohm |
| Time weight | FAST / SLOW |
| Microphone | 1/2 inch electret condenser microphone |
| Max | MAX |
| Power supply |
1.5V AA alkaline cells or DC 6V 100mA (maximum DC9V) |
| Power life | About 30 hours (alkaline battery) |
| Self calibration time | 3s |
| Operating condition | 0~40℃，10~80%RH |
| Storage condition | -10~60℃，10~70%RH |
| Weight | 308g (including battery) |
| Dimension | 256*70*35mm |
