WT1357 Digital Sound Level Meter, Range: 30dB~130dB

The meter has been designed to meet the measurement requirement of Safety Engineers, Health, Industrial Safety offices and Sound Quality control in various environment, which include factory, office, traffic, family, and audio system. Digital Sound Level Meter Features: 1. 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. 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 impendence 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 3 s Operating condition 0~40℃，10~85%RH Storage condition -10~40℃，0~70%RH