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 |
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