Description: Sound Level Meter, ZSLM-130 is used in situations where it is very difficult to understand the noise in particular for rotational fluctuations in machines. While the machine runs without lubrication, the noise level changes from normal. There will be more of frictional noise, which can be measured by this instrument. This instrument helps users in shop floor to take measurements of sound levels, which will in turn guide to the problem and take corrective remedial measures. The measurements are fairly accurate up to 130 dB. The technical specifications include: display - 3 ½ digits liquid large LCD display (1999 counts): resolution- 0.1dB; frequency range - 31.5 Hz - 8 Hz; sampling rate - 2.5 times per second; microphone - ½ inch Electret condenser microphone; accuracy : + 1.5 (ref dB at 1 KHz); level range - LO: 30 ~ 80db; Med 50 ~ 100db; Hi:80 ~ 130 db; analogue AC output - output voltage - 1 Vrms (at full scale), output voltage - 10mV/dB, output impedance-approx 100; dynamic range - 50db; power supply - standard 9 V DC battery; DC adaptor socket - 9 V (8~ 13V, max); supply current - > 30 mA, adaptor to be used; dimensions - 280 (L) x 80 (W) x 32 mm (H); weight - approx. 300 g (including battery); and accessories: instructions manual, carrying case, screw driver X 1 pc 3.5O plug X 1 pc, 9 V battery x 1 pc. This instrument is designed and built to meet the measurement requirements of safety engineers, health, industrial safety offices and quality control in various environments according to IEC 651 TYPE II, ANSI S1.4 II.
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