Product Overview
This sound level meter from AMPROBE, the Amprobe SM-20A, is a digital measuring instrument for recording sound levels with A- and C-frequency weighting. The Amprobe SM-20A is designed to meet IEC651 Type 2 and ANSI S1.4 Type 2 requirements and provides both fast and slow time weighting for measuring peak and average sound levels.Features and Operation
- A- and C-weightings: A-weighting 30–130 dB, C-weighting 35–130 dB.
- Time weighting: FAST (125 ms) and SLOW (1 s).
- Internal memory of 14,000 records with recording intervals from 1 second to 8 hours.
- PC download via USB for data transfer and further processing.
- Frequency range: 31.5 Hz to 8 kHz.
Typical Applications
- Used by Safety Engineers for measuring A- and C-weighted sound levels (as stated in the manufacturer's material).
- Application by Health and Industrial Safety offices for controlling sound levels in relation to safety regulations (stated by the manufacturer).
- Application in quality control for acoustic analysis and documentation (stated by the manufacturer).
Documentation
Detailed technical information and installation guide can be found in the manufacturer's data sheet.
View manufacturer's data sheet
Specifications
- Manufacturer: AMPROBE
- Model: Amprobe SM-20A (SKU 3477333)
- Standards: IEC651 Type 2, ANSI S1.4 Type 2
- Measuring level range: A 30–130 dB; C 35–130 dB
- Frequency range: 31.5 Hz–8 kHz
- Time weighting: FAST (125 ms), SLOW (1 s)
- Internal memory: 14,000 records; recording intervals 1 s to 8 h
- Resolution: 0.1 dB; Display update: 0.5 s
- Accuracy: ±1.5 dB
- Dynamic range: 50 dB
- Display: 4-digit LCD
- Microphone: 1/2" electret condenser microphone
- Power supply: 9V battery (included), approx. 50 hours of operation (alkaline)
- Auto power off: approx. 5 min
- Environment: Indoor operation, < 2000 m
- Operating temperature: 5°C to 40°C; storage: -10°C to 60°C
- Dimensions: 200 x 55 x 38 mm; weight: 233 g (incl. battery)
- Calibration interval: 1 year
- Supplied with: carrying case, windscreen, user manual, USB cable, and 9V battery
- Compatibility/compliance: CE, EMC EN61326-1 (stated in manufacturer documentation)
Source: Manufacturer's data sheet (see documentation above).
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