Model SM-20A
Sound Level Meter with Memory |
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The Amprobe SM-20 Sound Level Meter has been
designed for audible sound level measurements. The A weighting is
for general noise sound level and the C weighting is for measuring
sound level of acoustic material control in various environments
(i.e. 94dB 1 kHz etc...). The SM-20 conforms to the IEC651 Type
2,ANSI S1.4 Type 2, and JISC1502 requirements for Sound Level
Meters. Which means the SM-20 uses two different weighting filters
required by the IEC 651 and ANSI S1.4 Type 2: The A-Weighting and
the C Weighting audio filtering. |
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Features
- Designed to meet the measurement requirements of Safety
Engineers, Health, Industrial safety offices, and quality
control in various environments.
- A and C weightings for checking compliance with safety
regulations as well as acoustic analysis.
- Measuring ranges: 'A' Weighting 30dB to 130dB, and 'C'
Weighting 35dB to 130dB.
- Frequency range: 31.5Hz to 8KHz.
- 4-digit Liquid Crystal Display (LCD).
- Display settings: with 0.1dB steps.
- Slow (1 second) and Fast (125 Milli-seconds), response
setting to check Peak and Average noise levels.
- Min/Max recording functions.
- Internal Memory: 14,000 records.
- Recording intervals from 1 second to 8 hours.
- PC download capabilities.
- Data Hold function (to freeze reading on digital display).
- Accessories included are: carrying case, windscreen, 9V battery, and instruction manual.
- CE, designed to meet IEC 651 Type 2, ANSI S1.4 Type 2.
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Electrical (Audio) Specifications |
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Standard Applied |
IEC 651 Type 2, ANSI 1.4 Type 2 |
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Dynamic Range |
50dB |
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Resolution |
0.1dB, Display Update: 0.5 second |
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Time Weighting |
Fast (125ms), Slow (1 sec) |
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Frequency Range |
31.5Hz to
8KHz |
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Measuring Level Range |
Auto Range |
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'A' Weighting |
30dB to
130dB |
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'C' Weighting |
35dB to
130dB |
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Accuracy |
±1.5dB |
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Calibration Cycle |
1-year |
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Communication |
USB cable and download suite CD-ROM |
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Temperature/Humidity |
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Operating Temperature |
5°C to 40°C (41°F
to 104°F) |
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Storage Temperature |
-10°C to 60°C (14°F
to 140°F) |
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Operating Humidity |
less than 80% R.H. |
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Storage Humidity |
less than 70% R.H. |
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General Specifications |
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Microphone |
1/2-inch Electret condenser microphone |
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Display |
4-digits Liquid Crystal Display (LCD) |
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Power Supply |
9 Volt NEDA 1604, IEC 6F22, JIS 006P
battery |
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Battery Life |
approx. 50-hours (Alkaline Battery) |
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Low Battery Indication |
Yes |
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Auto Power Off |
Yes |
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Environment |
indoor operation |
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Altitude |
< 2000 meters |
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Dimensions |
200mm (L) x 55mm (W) x 38mm (D) |
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Weight |
233g |
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Included Accessories |
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Complete with carrying case,
windscreen, 9V battery (installed), USB cable, and instruction manual.
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