SM150 | Digital Sound Level Meter (Hand-Held) Kit

General Details

A professional-grade, handheld, 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.

SM150 Sound Level Meter Features:

  • switches for Hi/Lo dB, slow/fast/impulse, and A & C Weighting
  • large, 4 digit LCD display, maximum hold (captures & holds maximum noise level)
  • over/under range indicator
  • peak and average response settings (3.5 mm output jack for downloading AC or DC signals to a frequency analyzer, level recorder, FFT analyzer, graphic recorder, etc.)

SM150 Sound Level Meter 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 Range20 Hz ~ 8KHz
Measuring Level Range35~ 130 dB
Frequency WeightingA/C
Time WeightingFast (125 mS), Slow (1 sec.)Impulse (35 mS)
Microphone1/2˝ Electret Condenser
DisplayLCD (4 Digits)
Resolution0.1 dB
Display Period0.5 sec.
Level RangesLo (35-95dB); Hi (65~130dB)
Accuracy±1.4dB (Under Reference Conditions)
Dynamic Range65 dB
Alarm Function“OVER” displays when input out of range
Weight12.3 oz (350 g)
Mounting Nut1/4˝ x 20
Dimensions (LxWxH)Inch: 6.6˝ x 3.5˝ x 1˝; mm: 168 x 88 x 26
Maximum HoldHold readings, with decay , 1 dB/3 minutes
CalibrationElectrical calibration via internal oscillator (1 KHz) sine wave
AC Output0.6 Vrms at FS (full scale), output impedance approx. 5KΩ
DC Output10mV/dB, output impedance approx. 5KΩ
Power SupplyOne 9V battery
Power LifeApprox 50 hr (alkaline)
Operating Temperature Range32° F to 104°F (0°C to 40°C)
Operating Humidity Range25% to 90% RH
Storage Temperature14°F to 140°F (-10°C to 60°C)
Storage Humidity10% to 70% RH
Dimensions (L x W x H)Inch: 9.4˝ x 2.7˝ x 0.98˝ mm: 240 x 68 x 25
Weight7.5 oz (215 g)
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