Wide Measurement Range
Three overlapping ranges cover 30 to 130 dB with 0.1 dB display resolution.
TECPEL DSL-331
Sound Level Meter Data Logger
Measure and record environmental noise from 30 to 130 dB, then transfer stored readings to a computer through USB.
- 30 to 130 dB measuring range
- 0.1 dB display resolution
- 32,000-record internal memory
- A/C frequency weighting
- FAST/SLOW time weighting
- USB connection and AC/DC outputs
DSL-331 Digital Sound Level Meter Data Logger
30 to 130 dB Measurement range
32,000 Stored readings
±1.5 dB Accuracy at 94 dB, 1 kHz
USB Computer connection
Professional Noise Measurement and Recording
The DSL-331 combines portable sound level measurement with internal data logging. It is suitable for environmental noise surveys, machinery inspections, workplace monitoring and product sound testing.
Data Logging
Internal memory stores up to 32,000 readings for later analysis.
USB Data Transfer
Transfer recorded measurements using the supplied USB cable and software.
A and C Weighting
Select A or C frequency weighting according to the application.
FAST and SLOW Response
Choose FAST response at 125 ms or SLOW response at 1 second.
AC and DC Outputs
Connect compatible recording or analysis equipment through the output jack.
DSL-331 Technical 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 / display | 0.1 dB / 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 |
| Data memory | 32,000 records |
| Recording interval | 0.1 to 30 seconds |
| Functions | MAX HOLD, MIN HOLD, OVER and UNDER indication |
| Computer connection | USB with supplied software |
| Analog outputs | AC and DC outputs |
| Microphone | 1/2-inch polarized condenser microphone |
| Power supply | One 9 V battery; optional ADP-01 9 V adapter |
| Battery life | Approximately 50 hours with alkaline battery |
| Operating conditions | 0 to 40 °C; 10 to 90% RH, non-condensing |
| Storage conditions | -10 to 40 °C; below 80% RH, non-condensing |
| Dimensions | 275 x 64 x 30 mm |
| Weight | Approximately 275 g including battery |
Applications
Environmental Noise
Record changing sound levels in offices, factories, hospitals, schools and public environments.
Machinery Inspection
Compare equipment noise and monitor changes under controlled operating conditions.
Product Sound Testing
Measure product operating noise using consistent distance and measurement settings.
Accessories
Standard Accessories
Manual, 9 V battery, adjustment tool, 3.5 mm plug, windscreen, carrying case, USB cable and software.
Optional Accessories
ADP-01 9 V power adapter and 5 m microphone extension cable.
Frequently Asked Questions
What is the measuring range?
The DSL-331 measures 30 to 130 dB across three selectable ranges.
Can it record measurements?
Yes. Internal memory stores up to 32,000 sound level readings.
Can data be transferred to a computer?
Yes. The meter supports USB data transfer with the supplied cable and software.
Which weighting settings are available?
A/C frequency weighting and FAST/SLOW time weighting are available.
Request a DSL-331 Quotation
Please provide the required quantity, application and optional accessories.
Tel: +886-2-2218-3111
Email: sales@tecpel.com.tw