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Sound Level Meter LSDM-A11

Sound Level Meter LSDM-A11

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.

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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
  • Permits choice A, C, F weighting and ‘Fast’ / ‘Slow’ response times
  • 4 measurement parameters used
  • Memorize 30 groups of measurements
  • Designed with 4 digit LCD display, function mark, time weighting and weighting icon
  • 94 dB at 1k Hz (sinusoidal) Calibration
  • Use RS-232 data output to connect with PC

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.

Accessories no. Name
1Windscreen
2Carrying Case(B04)
3Operation Manual

Compare Models

Model Standards Parameters Measured Leq Measured Lmax Measured LN Testing Range Lp Testing Range Leq Testing Range LN Resolution Accuracy Frequency Time Weighting Microphone Memory Calibration Frequency Range Alarm Value Set Alarm Output Indicator Dimensions External DC Power Supply Weight
LSDM-A10 - - - - - - - - - In accordance with IEC61672 standard, class 2 - Fast (F), Slow (S) Φ 12.7 mm (1/2) test condenser microphone - Use class 1 sound level calibrator - - - - 227 × 63 × 26 mm - 4 x 1.5 V AAA Size (UM-4) Battery 185 g (Not Including Batteries)
LSDC-A10 ANSI S1.40 CLASS2, IEC942 - - - - - - - - 0.3 dB 1000 Hz - - - - - - - - - - 1 × 9 V 6F22 Battery 275 g (Including Battery
LSDM-A11 IEC 651.2, ANSI 1.4.2 Lp-Sound Level Equivalent Continuous A Sound Level Maximum Sound Level Percent of All Readings Over Alarm Value Set 30 to 130 dB ( A Weighting ) 35 to 130 dB ( C Weighting ) 40 to 130 dB ( F Weighting ) 30 to 130 dB (10 Seconds, 1 Min, 5 Min, 10 Min, 15 Min, 30 Min, 1 Hour, 8 Hours, 24 Hours) 0 to 100 % 0.1 dB 1 dB A /C / F (Flat) Fast (125 ms) / Slow (1 Second) 1/2 Inch Electret Condenser Type 30 Groups with Measuring Conditions 94 dB at 1k Hz (sinusoidal) 20 to 12, 500Hz 30 to 130 dB LED Optional Relay Contact (NC) Low Battery Indicator 236 × 63 × 26 mm 6V, DC, 100mA 4 × 1.5 V AAA Size (UM-4) Battery 170 g

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