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Sound Level Meter LSDM-A11 is a universal sound level meter that measures the exponential time weighted sound level. It is small in size, light in weight and easy to carry unit. It has 1/2 inch electret condenser type microphone and offers 4 measurement parameters Lp (sound level), Leq (Equivalent Continuous A Sound Level ), Lmax ( Maximum Sound Level) and LN (Percent of all readings over alarm value set with 4 digit LCD display, function mark, time weighting, weighting icon and data memorized. Permits choice A, C, F weighting and Fast/Slow response times and interface use RS-232 data output to connect with PC.
| Standards | IEC 651.2, ANSI 1.4.2 |
| Parameters | Lp-Sound Level |
| Measured Leq | Equivalent Continuous A Sound Level |
| Measured Lmax | Maximum Sound Level |
| Measured LN | Percent of All Readings Over Alarm Value Set |
| Testing Range Lp | 30 to 130 dB ( A Weighting ) 35 to 130 dB ( C Weighting ) 40 to 130 dB ( F Weighting ) |
| Testing Range Leq | 30 to 130 dB (10 Seconds, 1 Min, 5 Min, 10 Min, 15 Min, 30 Min, 1 Hour, 8 Hours, 24 Hours) |
| Testing Range LN | 0 to 100 % |
| Resolution | 0.1 dB |
| Accuracy | 1 dB |
| Frequency | A /C / F (Flat) |
| Time Weighting | Fast (125 ms) / Slow (1 Second) |
| Microphone | 1/2 Inch Electret Condenser Type |
| Memory | 30 Groups with Measuring Conditions |
| Calibration | 94 dB at 1k Hz (sinusoidal) |
| Frequency Range | 20 to 12, 500Hz |
| Alarm Value Set | 30 to 130 dB |
| Alarm Output | LED Optional Relay Contact (NC) |
| Indicator | Low Battery Indicator |
| Dimensions | 236 × 63 × 26 mm |
| External DC | 6V, DC, 100mA |
| Power Supply | 4 × 1.5 V AAA Size (UM-4) Battery |
| Weight | 170 g |
| Accessories no. | Name |
|---|---|
| 1 | Windscreen |
| 2 | Carrying Case(B04) |
| 3 | Operation Manual |
Sound Level Meter is used to test the sound level of environment, machinery, vehicle, ship and other noise also used for industrial environmental protection, construction, health care, teaching and research department.
