The SM-70 sound level meter has been designed for simple noise surveys and sound level checks. Easy to use for measuring noise in factories, industrial complexes, fire alarms and other alarm systems, and sound system installations.
 

Specifications

Standard Applied

According to IEC 651, ANSI S1.4

Frequency Range

31.5Hz to 8kHz

Measuring Level Range

35dB to 130dB

Frequency Weighting

A/C

Microphone

1/2 inch Electric condenser microphone

Display

LCD 4-digits

Display Period

0.5 sec

Digital Display Resolution

0.1dB

Time Weighting

Fast (125mS), Slow (1 sec)

Level Ranges

Lo: 35db to 100dB and Hi: 65dB to 130dB

Accuracy

±2.0dB (under reference conditions)

Dynamic Range

65dB

Alarm Function

'OVER' is shown when input is out of range

Maximum Hold

Hold readings, with decay <1dB/3-minutes

Calibration

Electrical calibration with the internal (1kHz sine wave)

AC Output

0.65Vrms at full scale, output impedance 600Ω approx.

DC Output

10mV/dB, output impedance 100Ω approx.