SM150 | Digital Sound Level Meter

Sound Level Meter

A professional grade, hand held, lightweight sound level meter for measuring noise levels from 35 to 130dB. Common applications include 
monitoring sound output from HVAC/R compressors, blowers, health and safety requirements, offices, factory machinery, airports, auditoriums, 
studio acoustics, etc. Features switches for Hi/Lo dB, slow/fast/impulse, and A & C Weighting. Includes a large, 4 digit LCD display, maximum hold 
(captures & holds maximum noise level), Over/under range indicator, peak and average response settings. Includes a 3.5 mm output jack for 
downloading AC or DC signals to a frequency analyzer, level recorder, FFT analyzer, graphic recorder, etc. Kit includes instruction manual, foam 
windscreen, 3.5 mm plug, calibration screwdriver, 9 V battery, foam padded carrying case. Factory calibrated. CE approved. Meets or exceeds ANSI 
S1.4 Type 2; IEC 61672-1 Class 2.

Frequency Range						20 Hz ~ 8KHz

Measuring Level Range					35~ 130 dB

Frequency Weighting					A/C

Time Weighting						Fast (125 mS), Slow (1 sec.)Impulse (35 mS)

Microphone						         1/2˝ Electret Condenser

Display							LCD (4 Digits)

Resolution						         0.1 dB

Display Period						0.5 sec.

Level Ranges						Lo (35-95dB); Hi (65~130dB)

Accuracy							±1.4dB (Under Reference Conditions)

Dynamic Range						65 dB

Alarm Function						“OVER” displays when input out of range

Weight							12.3 oz (350 g)

Mounting Nut						1/4˝ x 20

Dimensions (LxWxH)					Inch: 6.6˝ x 3.5˝ x 1˝; mm: 168 x 88 x 26

Maximum Hold						Hold readings, with decay , 1 dB/3 minutes

Calibration						         Electrical calibration via internal oscillator (1 KHz) sine wave

AC Output						         0.6 Vrms at FS (full scale), output impedance approx. 5KΩ

DC Output						         10mV/dB, output impedance approx. 5KΩ

Power Supply						One 9V battery

Power Life						         Approx 50 hr (alkaline)

Operating Temperature Range				32° F to 104°F (0°C to 40°C)

Operating Humidity Range				25% to 90% RH

Storage Temperature					14°F to 140°F (-10°C to 60°C)

Storage Humidity						10% to 70% RH

Dimensions (L x W x H)					Inch: 9.4˝ x 2.7˝ x 0.98˝ mm: 240 x 68 x 25

Weight							7.5 oz (215 g)