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The Amprobe SM-20-A Sound Meter has been designed to check compliance with safety regulations and perform acoustic analysis by safety engineers, health, industrial and safety offices as well as quality control. The SM-20-A offers a PC interface.
They use two different weighting filters required by the IEC651 and ANSI S1.4 Type 2 for audio filtering. 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 (ie 94dB 1 kHz etc.)
 
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Amprobe SM-20-A Sound Meter
5
5
2
2
Works Awesome
I work in a manufacturing plant and we regularly check the sound levels to make sure we are using the right hearing protection. We have been using the Amprobe SM-20-A Sound Meter for a while now and its ease of use and simple operations make for quick and easy testing. Love it and recommend it to everyone.
March 29, 2012
This Product Confirmed The Level Of Noise Contributing To My Hearing Loss
I was amazed,It not only proved to be invaluble in my work, but to prove that the levels I was trying to prove were causing my hearing loss were confirmed by the SM-20. Lightweight And accurate to + or - 1.5dB. A great audio measuring tool at a great price
March 29, 2012
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- 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 30~130dB, C weighting 35~130dB
- Frequency range: 31.5Hz~8KHz
- Display with 0.1dB steps on a 4 digit LCD
- Slow (1 sec) and fast (125ms) response settings to check peak and average noise levels
- Max/min recording
- Internal memory, 14,000 records
- Recording intervals from 1 second to 8 hours
- PC computer download capabilities
- Data hold to freeze reading on digital display
- CE, designed to meet IEC651 type 2, ANSI S1.4 type 2
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| Microphone |
1/2 Electret condenser microphone |
| Standard applied |
IEC 651 Type 2, ANSI 1.4 Type 2 |
| Dynamic range |
50 dB |
| Time weighting |
Fast (125 mS), Slow (1 sec) |
| Frequency range |
31.5 Hz → 8 kHz |
| Measuring level range |
(Auto Range) A-Weighting: 30 dB → 130 dB
C-Weighting: 35 dB → 130 dB |
| Data |
Data hold |
Min/max |
| Internal memory |
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14,000 records |
| Specifications |
| Display: |
4 digits LCD |
| Microphone: |
1/2 inch Electret condenser microphone |
| Power supply: |
9V NEDA 1604, IEC 6F22, JIS 006P battery |
| Auto power off: |
Approx. 5 min |
| Environment: |
Indoor operation, < 2000 m |
| Standard applied: |
IEC 651 Type 2, ANSI 1.4 Type 2 |
| Dynamic range: |
50 dB |
| Resolution: |
0.1 dB, display update: 0.5 sec. |
| Time weighting: |
FAST(125mS), SLOW(1 sec) |
| Accessories: |
Carrying case, windscreen, User manual and 9V battery |
For complete specs please download the product datasheet under the “Resources" tab.
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| Model Name | Description | Price List | | SM-20-A | - 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
- Internal memory, 14,000 records
Included Accessories: Carrying case, users manual, battery(installed),USB cable download and software CD |
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