Trotec SL400 Sound Level Meter

Trotec SL400 Sound Level Meter

Trotec SL400 Sound Level Meter

Precision noise measurement tool for industrial, environmental, and workplace applications

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Product Description Trotec SL400 Sound Level Meter

The Trotec SL400 is a high-performance sound level meter designed to meet Class 2 accuracy standards according to IEC 61672-1 and ANSI S1.4. This device is ideal for documenting machine noise, environmental noise, workplace evaluations, and professional acoustic assessments.

With a four-digit display and bar graph for easy readability—even in low-light conditions thanks to the backlit LCD—the SL400 offers comprehensive functionality in a compact and user-friendly format. The ergonomic layout supports one-handed operation, making it a go-to solution for both standard and demanding sound measurement tasks.

Key features include A- and C-weighted frequency evaluations, fast and slow time weighting, maximum/minimum value storage, and a logging memory capable of storing up to 32,700 data points. Data can be transferred to a PC via USB for further analysis using the included software. The unit also supports permanent measurement setups via an integrated tripod mount and connectivity for external frequency analyzers or plotters through a 3.5 mm jack.

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Key Features

• Meets Class 2 accuracy per IEC 61672 and ANSI S1.4

• Frequency weighting selectable between A and C

• Switchable time weighting: fast (125 ms) or slow (1 s)

• Displays current, minimum, and maximum sound levels

• Backlit LCD and bar graph for clear visual feedback

• Logging memory for up to 32,700 readings

• USB port for PC data transfer and analysis

• Integrated 3.5 mm jack for external signal output

• Includes calibration certificate for traceable accuracy

• Can be mounted on included mini-tripod for fixed monitoring

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Technical Specifications

• Measuring range: 30 to 130 dB

• Accuracy: Class 2 (IEC 61672-1), Type 2 (ANSI S1.4)

• Resolution: 0.1 dB

• Frequency range: 31.5 Hz to 8 kHz

• Dynamic range: 50 dB

• Partial ranges:

  • Low: 30–80 dB

  • Medium: 50–100 dB

  • High: 80–130 dB

  • Auto: 30–130 dB

• Time weighting: Fast (125 ms) and Slow (1 s)

• Microphone: Electret condenser

• Power supply: 9 V battery (IEC 6LR61 / 6P22)

• Battery life: Over 30 hours continuous use

• Operating conditions: 0 to 40°C, 10–90% relative humidity

• Dimensions: 255 x 63 x 45 mm

• Weight: 305 g

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Included Items

• SL400 sound level meter

• Calibration certificate

• USB cable

• Mini tripod

• Analysis software

• User manual

• Carrying case

• Battery

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Summary

Overview:
The Trotec SL400 is a versatile, professional-grade sound level meter ideal for accurate acoustic measurements in industrial, environmental, and occupational health settings.

Key Selling Points:

• Class 2 compliance for professional use

• Supports detailed logging and real-time analysis

• Portable and easy to operate with one hand

• Large memory and USB connectivity for extended monitoring

• Includes software and tripod for immediate deployment