MODEL DSL-331
Sound Level Meter Data Logger
Measure and record sound levels from 30 to 130 dB. Store up to 32,000 readings and transfer the recorded data to a computer through USB.
- 30 to 130 dB measurement range
- 0.1 dB resolution
- 32,000 data records
- A and C frequency weighting
- FAST and SLOW response
- USB connection
- AC and DC outputs
TECPEL DSL-331
Noise Measurement and Data Logging
The DSL-331 is a portable digital sound level meter with internal data logging. It is suitable for environmental noise surveys, machinery checks, workplace monitoring and product sound testing.
Wide Measuring Range
Three selectable ranges cover sound levels from 30 to 130 dB.
32,000 Records
Store measurements internally for later review and reporting.
USB Transfer
Transfer recorded measurements using the supplied cable and software.
A and C Weighting
Select the frequency weighting required for the application.
FAST and SLOW
Choose a 125 ms FAST response or a 1 second SLOW response.
Analog Outputs
AC and DC outputs support compatible recording equipment.
DSL-331 Specifications
| Parameter | Specification |
|---|---|
| Measurement range | 30 to 130 dB |
| Selectable ranges | Low: 30 to 80 dB; Medium: 50 to 100 dB; High: 80 to 130 dB |
| Accuracy | +/- 1.5 dB at 94 dB and 1 kHz |
| Resolution | 0.1 dB |
| Display | 4 digits |
| Frequency response | 31.5 Hz to 8 kHz |
| Dynamic range | 50 dB per range |
| Frequency weighting | A and C |
| Time weighting | FAST: 125 ms; SLOW: 1 second |
| Memory | 32,000 records |
| Recording interval | 0.1 to 30 seconds |
| Functions | MAX HOLD, MIN HOLD, OVER and UNDER indication |
| Computer interface | USB with supplied software |
| Outputs | AC and DC analog outputs |
| Microphone | 1/2-inch polarized condenser microphone |
| Power | One 9 V battery; optional ADP-01 adapter |
| Battery life | Approximately 50 hours with alkaline battery |
| Operating conditions | 0 to 40 degrees C; 10 to 90% RH, non-condensing |
| Dimensions | 275 x 64 x 30 mm |
| Weight | Approximately 275 g including battery |
Typical Applications
Environmental Noise
Measure changing sound levels in offices, factories, schools and public spaces.
Machinery Inspection
Compare equipment noise under controlled operating conditions.
Product Testing
Measure and record product operating noise at a consistent distance.
Downloads
English Datasheet PDFEnglish User Manual PDFDSL-331 SoftwareAccessories
Standard: Manual, battery, adjustment tool, 3.5 mm plug, windscreen, carrying case, USB cable and software.
Optional: ADP-01 9 V power adapter and 5 m microphone extension cable.
Frequently Asked Questions
What is the measuring range?
It measures sound levels from 30 to 130 dB.
Can it record measurements?
Yes. The internal memory stores up to 32,000 readings.
Can the data be transferred to a computer?
Yes. The meter supports USB transfer with the supplied cable and software.
Request a DSL-331 Quotation
Please send the required quantity, application and optional accessories.
Tel: +886-2-2218-3111
Email: sales@tecpel.com.tw