Discontinued product - Contact us for a possible replacement
Lutron SL4011
Sound Level Meter (High Performance)
DIGITAL SOUND LEVEL METER
Model: SL‑4011
Features
- Large LCD display, easy to read.
- Frequency weighting networks designed to meet IEC 651 type 2.
- A & C weighting networks conform to standards.
- Fast & slow dynamic characteristic modes.
- AC / DC output for system expansion.
- Built‑in calibration VR for easy calibration.
- Condenser microphone for high accuracy & long‑term stability.
- Max. hold function stores the maximum value on display.
- Warning indicator for over‑ and under‑range.
- LCD display for low power consumption & clear readout even in bright ambient light.
- Durable long‑lasting components with strong, lightweight ABS plastic housing.
- Small and lightweight design allows one‑hand operation.
Specifications
| Display | LCD, 18 mm (0.7") digit size, 3 1/2 digits. |
| Function | dB (A & C frequency weighting), Time weighting (Fast, Slow), Max. hold, AC & DC output. |
| Measurement Range | 3 ranges, 35 to 130 dB. |
| Resolution | 0.1 dB. |
| Accuracy (23 ± 5°C) | Frequency weighting meets IEC 651 type 2, calibrated input signal on 94 dB (31.5 Hz to 8 kHz). Accuracy of A weighting: 31.5 Hz ± 3 dB, 63 Hz ± 2 dB, 125 Hz ± 1.5 dB, 250 Hz ± 1.5 dB, 500 Hz ± 1.5 dB, 1 kHz ± 1.5 dB, 2 kHz ± 2 dB, 4 kHz ± 3 dB, 8 kHz ± 5 dB. |
| Frequency Weighting Network | A weighting: simulated “Human Ear” response. C weighting: flat response suitable for checking mechanical noise. |
| Frequency Response | 31.5 Hz to 8,000 Hz. |
| Calibrator | B & K (Brüel & Kjær) multi‑function acoustic calibrator, model 4226. |
| Microphone | Electric condenser microphone, 1/2 inch standard size. |
| Range Selector | 30–80 dB, 50–100 dB, 80–130 dB. |
| Time Weighting | Fast: 200 ms – simulates human ear response. Slow: 500 ms – easy to read average vibration sound level. |
| Output Signal | AC output: 0.5 Vrms corresponding to each range. DC output: 0–3 VDC, 10 mV per dB. Output impedance: 600 ohm. |
| Calibration VR | Built‑in external calibration VR, adjustable by screwdriver. |
| Output Terminal | 3.5 mm phone jack for analyzer, level recorder or tape recorder. |
| Operating Temperature | 0°C to 50°C (32°F to 122°F). |
| Operating Humidity | Max. 90% RH. |
| Power Supply | DC 9V battery (heavy duty type). |
| Power Consumption | Approx. DC 6 mA. |
| Dimension | 225 × 70 × 29 mm (8.9 × 2.8 × 1.1 inch). |
| Weight | 250 g (0.55 lb), including battery. |
| Standard Accessories | Instruction manual — 1 PC. Carrying case — 1 PC. |
| Optional Accessories | 94 dB Sound Calibrator, model SC‑940. |
| Selling Unit | EACH |
|---|---|
| Model No | SL4011 |
| Brand |
|
| Description | Sound Level Meter (High Performance) |
| Width | 70mm |
| Height | 28mm |
| Length / Breadth / Depth | 225mm |
| Weight | 94g |
| Categories |
Test & Measurement Equipment Digital Test Equipment Sound Level Meters |
| Data Sheet |
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