Technical Specification
| Applied Standards: | GB or T3785, Class 1; IEC 61672, Class 1 |
| Measured and evaluated items | Lp (time weighted sound level) or Lmax (maximum time weighted sound level), Lmin (minimum time weighted sound level), LCpeak (C weighted peak sound level). LP,Leq,LAE,L5,L10,L50,L90,L95,Lmax,Lmin,LCpeak,EA, etc. |
| Microphone: | Class 1 industrial measurement microphone, nominal diameter 0.5 in, free field type frequency response. Nominal pressure sensitivity is 50 mV/Pa (nominal pressure sensitivity level is – 26 dB, reference value is 1 V) |
| Frequency | 10 Hz to 20 kHz |
| Frequency Weightings: | A, C ,Z |
| Time Weightings: | F(Fast) and S(Slow) |
| Measuring Range | A:30 to 130 dB, C:40 to 130 dB,Z: 45 dB to 130 dB |
| Integration time | Manual control of measurement time in the range of 5 s to 99 h, 59 min and 59 s |
| Automatic calibration range | ±4.5 dB (reference value is 50 mV or Pa) |
| Screen | 128 x 64 dot matrix liquid crystal display (LCD), with resolution of 0.1dB, has signs of overload, under-range, low battery voltage alarm, over-threshold alarm and so on. |
| Analog output | Output jack is 0.14 in (3.5 mm) dual-channel headphone jack, minimum load impedance is 10 kΩ DC logarithmic voltage: The output voltage is logarithmic to the measured sound pressure, and the output voltage per unit sound pressure is 15 mV or dB. AC Linear Voltage: The output voltage is linearly correlated with the measured sound pressure, and the output voltage corresponding to the upper boundary of the stage range is 2.0 V. |
| Digital output | Output connector is DB 9 (needle type), RS 232 serial communication port, output ASCII code, modulation rate (baud rate) 9600 Bd |
| Power supply | 2 LR6 (No. 5) batteries, working continuously for 27 hours |
| Accessories | Main Unit, External Probe, Screwdriver, Carrying Case (B04), Manual |
| Size | 8.27 in ×2.68 in × 1.22 in (210 mm x 68 mm x 31 mm) |
| Working Temperature | 32 F to 104 F (0 ℃ to 40 ℃) |
| Weight | 0.46 lb (0.21 kg) |
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