Sound Level MeterLD-LSDM-A11is 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.
| 1 | Windscreen |
| 2 | Carrying Case(B04) |
| 3 | Operation Manual |
| Memory | 30 Groups with Measuring Conditions |
| Weight | 170 g |
| Accuracy | 1 dB |
| Frequency | A /C / F (Flat) |
| Indicator | Low Battery Indicator |
| Standards | IEC 651.2, ANSI 1.4.2 |
| Dimensions | 236 × 63 × 26 mm |
| Microphone | 1/2 Inch Electret Condenser Type |
| Parameters | Lp-Sound Level |
| Resolution | 0.1 dB |
| Calibration | 94 dB at 1k Hz (sinusoidal) |
| External DC | 6V, DC, 100mA |
| Measured LN | Percent of All Readings Over Alarm Value Set |
| Alarm Output | LED Optional Relay Contact (NC) |
| Measured Leq | Equivalent Continuous A Sound Level |
| Power Supply | 4 × 1.5 V AAA Size (UM-4) Battery |
| Measured Lmax | Maximum Sound Level |
| Time Weighting | Fast (125 ms) / Slow (1 Second) |
| Alarm Value Set | 30 to 130 dB |
| Frequency Range | 20 to 12, 500Hz |
| Testing Range LN | 0 to 100 % |
| 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) |
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.
