Propel Quality Measurement

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Sound Level Meter

Model:DSL 330 

Features :

☆ Measuring Range: 30 ~ 130 dB ;   High, Med, Low 3  ranges Sound level meter
Frequency Weighting: A, C
4-Digit Display with updated cycle 0.5s
 0.1dB resolution
 Max /Min  Hold Function
The standard Fast and Slow Time weightings
AC/DC signal output
Overload condition indication
 Auxiliary output jack
  IEC 651 Type II, ANSI S1.4 Type2.

 Back screw hole tripod connection

 Calibration Potentiometer easy to adjust

  Model : DSL 330

Specifications :  with CE approval

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Standard Applied:

IEC651 Type 2, ANSI S1.4 Type 2

Frequency Range

31.5Hz ~ 8KHz

Measuring Level Range

30 ~ 130dB

Frequency Weighting



1/2 inch electric  condenser microphone


LCD Back Light Function

Digital Display

4 digits ,    Resolution: 0.1dB,    Display Update: 0.5 sec

Analog Display

50 segment Bar graph, Resolution, Resolution: 1dB, Display update: 50mS

Time Weighting

FAST (125mS); SLOW(1 Sec)


Lo: 30 ~ 80dB ; Med: 50~ 100dB, Hi: 80~ 130dB;      Auto Range : 30~ 130 dB


±1.5dB (under reference condition at 94dB 1KHz)

Measuring Level Range

30 ~ 130dB

Dynamic Range

100 dB

Over and Under range Indication Function

"OVER" is displayed, while input is more than upper limit of range. ; " UNDER" is displayed, while input is less than lower limit of range.


 Hold Reading the Maximum and Minimum Value 

AC Output

1V rms at FS (Full Scale),                                           output impedance :      Approx. 100 Ω 

DC Output

10mV/dB, Output impedance approx. 1K Ω 

Auto Power Off 30 minutes if no operation


Power Requirement:

One piece 9V battery NEDA 1604

Power Life

About 50 Hours (Alkaline battery)

AC Adapter (option)

Voltage 9VDC (8~ 15 V DC Max) ; Supply current : > 30mADC

Operation Temperature

0 to 40 ºC (32 to 104 ºF)

Operation Humidity

10 to 90% RH

Storage Humidity

10 to 75% RH


10 oz(285g)


9V battery, Carrying case, calibration screwdriver, 3.5Ø plug,  windscreen and owners manual.

Tripod Connection Hole Able to connect Camera Tripot Stand 








Tel : 886 (2)2737-5866  FAX : (02)2737-3343



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