LUTRONSL-4001 IEC 61672 class 2 SOUND LEVEL METER

Achieve Precision and Reliability with a Professional Sound Level Meter

The SL-4001 Sound Level Meter provides accurate and reliable measurements of sound pressure levels, making it an essential tool for various industrial, environmental, and audio applications.

• Large LCD Display: Large, easy-to-read LCD ensures clear read-outs even in bright ambient light; low power consumption.
• Max Hold Function: Stores the maximum value on the display for capturing peak sound levels.
• Frequency Weighting Networks: Conforms to IEC 61672-1-2013 Class 2 standards with A & C weighting.
• Time Weighting Modes: Offers Fast (125 ms) and Slow (1 s) response times.
• Versatile Output Options: Provides AC and DC output for analyzers, level recorders, and tape recorders.

• Display
• Type: LCD (Liquid Crystal Display)
• Size: 18 mm (0.7 inch), 3½ digits

• Sound Pressure Level (SPL)
• Range: 30 – 130 dB (input signal only)
• Resolution: 0.1 dB
• Accuracy (Class 2)
• 31.5 Hz: ±3.0 dB
• 63 Hz: ±2.0 dB
• 125 Hz: ±1.5 dB
• 250 Hz: ±1.5 dB
• 500 Hz: ±1.5 dB
• 1 kHz: ±1.0 dB
• 2 kHz: ±2.0 dB
• 4 kHz: ±3.0 dB
• 8 kHz: ±5.0 dB
• Frequency Weighting Network
• A Weighting: Simulates human ear response for environmental measurements.
• C Weighting: Near-flat response for machinery noise.
• Frequency Range: 31.5 Hz to 8,000 Hz
• Calibration
• Built-in VR adjustment via screwdriver
• Internal 1 kHz sine-wave generator
• Compatible with B&K Model 4226 calibrator
• Microphone Type: ½″ electric condenser
• Range Selector
• 30 – 80 dB, 50 – 100 dB, 80 – 130 dB; over/under-range indication
• Output Signal
• AC: 0.5 Vrms per range step
• DC: 0.3 – 1.3 V, 10 mV/dB; impedance 600 Ω; 3.5 mm phone jack
• Power Supply: 006P DC 9 V heavy-duty battery
• Power Consumption: Approx. 9.5 mA
• Operating Environment
• Temperature: 0 – 50 °C (32 – 122 °F)
• Humidity: < 80% RH
• Dimensions & Weight
• Main Unit: 245 × 80 × 35 mm (9.6 × 3.2 × 1.4 in)
• Weight: 220 g (0.48 lb) without battery

• Instruction Manual × 1
• Calibration Screwdriver × 1

• Microprocessor Circuit: Ensures high accuracy with special functions.
• Durable Design: Lightweight ABS housing for long-lasting use.
• One-Hand Operation: Compact and easy to operate single-handed.
• Low Battery Indicator: Alerts when battery is low.

• Environmental Monitoring: Noise assessments in various settings.
• Industrial Maintenance: Ensure compliance with safety standards.
• Audio Testing: Evaluate and calibrate audio equipment.