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Sound Meter - db Level Digital with Data Logging - DSM402SD
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Sound Meter - db Level Digital with Data Logging - DSM402SD

dB Sound Level Meter - Digital with Data Logging SD Card - Class 2

  • $360.00
Market price: $399.99, you save $39.99
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  • Weight
    1.75 lbs
  • SKU

dB Sound Level Meter - Digital with Data Logging - Class 2 - DSM402SD

Class 2 Sound Meter by General Tools Accurately Measures Sound Levels of Machinery or an Environment with 0.1 dB Resolution. (See Below For Available Accessories)  

Sound Level Monitoring System Applications:

  • Noise pollution control
  • OSHA noise regulatory compliance
  • Acoustics design
This instrument’s unique feature is its patented technique for storing sampled data in Excel format on removable SD memory cards.

Sound Meter Features:

  • Measures sound levels of machinery or an environment
  • Large backlit LCD
  • Auto ranging or manual ranging 
  • "A" or "C" frequency weighting 
  • Fast or slow time weighting 
  • Min/max/peak memory plus data hold
  • Downloads logs Excel format
  • Auto power off (can be disabled for data logging)
  • Tripod mount

Click Here to See Manufacturer Detail 
Click Here to See Manufacturer Manual

DSM402SD Class 2 Sound Meter Specifications:

Embedded Microcontroller: Custom one-chip LSI device
Display Type: LCD with green backlight
Display Size: 2.05 x 1.5 in. (52 x 38 mm)
Parameter Measured: dB
Frequency Range: 31.5 Hz to 8 kHz
Measurement Range:
     30 to 130 dB in autoranging mode
     User can also select fixed range of 30 to 80 dB, 50 to 100 dB, or 80 to 130 dB
Measurement Weighting:
     By frequency: frequency weighing uses “A” or “C” standard
     By time: time weighting is fast or slow (200 ms or 500 ms response time)
Measurement Accuracy:
     With “A” frequency weighting: ± 3.5 dB @ 31.5 Hz, 2. 5 dB @ 63 Hz, 2 dB @ 125 Hz,
     1.9 dB @ 250 Hz, 1.9 dB @ 500 Hz, 1.4 dB @ 1 kHz, 2.6 dB @ 2 kHz, 3.6 dB @ 4 kHz, 5.6 dB @ 8 kHz
Measurement Resolution: 0.1 d
Data Logging Sampling Time: 1 second to 1 hour
Settable Parameters: Date, time, auto power off, beep sound, sampling time, decimal point or comma decimal division, “A” or “C” frequency weighting, fast or slow time weighting
Storable/Recallable Readings: Maximum, minimum
SD Card Capacity: 1 GB to 16 GB
Operating Temperature: 32° to 122°F (0° to 50°C)
Operating Relative Humidity: 0 to 85%
Power Supply: Six Alkaline “AA” batteries or optional 9-VDC AC adapter GTAC10
Power Consumption:
     8 mADC (normal operation, with backlight off and SD card not saving data)
     30 mADC with backlight on and card saving data
     44 mADC with backlight on and card saving data
Dimensions of Meter: 9.65 x 2.68 x 1.77 in. (245 x 68 x 45mm)
Weight of Meter: 1.08 lb. (489g)

DSM402SD Class 2 Sound Meter  Includes:

  • Custom hard carrying case
  • Sound wind shield ball
  • 2 GB SD memory card
  • User’s manual

One Year Limited Manufacture’s Warranty

Why Excel-formatted SD cards are a breakthrough in data logging technology:
  1. No muss. Unlike data loggers that use an RS-232 interface, General’s SD card instruments don’t require the end user to buy, stock and connect cables.
  2. No fuss. They also don’t require the user to add multiple jumpers between cable connectors to set up a serial communications link via RS-232. Adding even one jumper takes time and makes connections prone to failure.
  3. No software. General’s SD instruments don’t even need software. The automatically store the data they capture in a format readable by Microscoft’s Excel spreadsheet program. Any computer equipped with Excel will automatically display – as a table or graph – the data logs on an SD card inserted into it.
  4. No limits. SD cards are now available in capacities up to 32 GB. They’re not just a high-capacity storage medium, but a removable one as well. And because they’re solid-state, SD cards are inherently more reliable than rotating electromagnetic media like CD’s or DVD’s.
  5. No waste. Because the SD cards are removable, they’re portable. Once you’re done uploading the data logs on an SD card to your computer, you can erase the card and use it again – with the same SD card instrument or a different one.

Available Accessories:

  • Manufacturer
    General Tools and Instruments

Product questions

  • Jen
    07/14/2019, 09:02 PM

    Does it record an audio file of the sound along with the dB level? Or just the dB level files? I need to be able to distinguish what causes the measured dB levels through a corresponding audio file. Thanks.

    07/15/2019, 11:05 AM

    I am sorry but this device does not record an audio file. It only logs the sound level readings.

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