Measuring range | 28dB ~ 133dB (A), 33dB ~ 133dB (C), 38dB ~ 133dB (Z) (2 * 10-5 Pa for reference, the same as below) |
Frequency range | 10Hz~20kHz |
Local electromechanical noise | Less than 4 microns to A microns, 7 microns to C microns, 13 microns to Z microns (with preposition and 20pF capacitance to short circuit) |
Right of frequency meter | A, C, Z weight |
Time weighting | F (fast), S (slow), I (pulse) |
Accuracy of | In accordance with GB/T 3785.1-2010, IEC 61672-1:2013 level 1 and GB/T 3241-2010, IEC 61260-1:2014 level 1 |
Display | 128 * 64 dot matrix OLED |
Data output | WIFI mode: AP mode, STA mode, the transmission distance is 10 meters (the interference of surrounding signals may be reduced) |
Power supply | Lithium battery: it can work continuously for more than 6 hours after being fully charged; External power: 5V 1A USB interface power |
Overall dimensions | l×b×h(mm):225×75×24(mm) |
The quality of | 205g |
Conditions of use | Gas temperature: - 20 ℃ to + 50 ℃ Relative humidity: 25% ~ 90% Gas pressure: 65kPa ~ 108kPa |