DSL-330 Sound Level Meter IEC651 Type 2, ANSI S1.4 Type 2 Product ID: DSL-330

Commonly used in noise pollution studies for the quantification of almost any noise, the sound level meter measures sound pressure level. Especially for industrial, environmental and aircraft noise, this meter is the most appropriate and accurate one. As a leading Taiwanese manufactures of high quality test and measurements, our sound level meter performance is conformed to the international standard, IEC61672:2003.

If you are interested in our products, please feel free to contact us anytime. The followings are the brief introduction for our DSL-330 and DSL-332 sound level meter, take a look and find the most suitable one for your needs.

1. DSL-330:


DSL-330 sound level meter specifications:
  • Standard Applied: IEC651 Type 2, ANSI S1.4 Type 2
  • Frequency Range 31.5Hz ~ 8KHz
  • Measuring Level Range: 30 ~ 130dB
  • Frequency Weighting: A/C
  • Microphone : 1/2 inch electric condenser microphone
  • Display LCD Back Light Function
  • Digital Display 4 digits , Resolution: 0.1dB, Display Update: 0.5 sec
  • Time Weighting FAST (125mS); SLOW(1 Sec)
  • Level Range : Lo: 30 ~ 80dB ; Med: 50~ 100dB, Hi: 80~ 130dB;  
  • Accuracy +/-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 the upper limit of the range. ; "UNDER" is displayed, while input is less than the lower limit of the range.
  • MAX/MIN Hold
  • 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
  • General features 
  • 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
  • Weight: 10 oz(285g)
  • Accessories: 9V battery, Carrying case, calibration screwdriver, 3.5Ø plug, windscreen, and owner's manual.
  • Tripod Connection Hole Able to connect Camera Tripod Stand
  • Tripod Stand (Optional DSL-330-ST)

Comparison Chart DSL-330 DSL-332
Range: 30 ~ 130 dB 35 ~ 130 dB
Self-Calibration Not Available Yes
Switch Push type Slide type
AC to DC 9V adopter Yes but Option Not Available

Q& A:
Do you know if the ​" ​auto power-off​ "​ function is de-activated when the DSL-330 SLM is connected to 9 volt AC power?
Answer : After you switched the power-on, the power-off will be active. 
If you don't want this function, you should choose another model
DSL-330A. This model is auto-power-off disabled.
Please refer to the link below.