The Extech SL400-NIST is a compact, lightweight personal noise dosimeter designed to perform OSHA and IEC noise accumulation surveys, offering reliable measurement of total sound exposure over an 8-hour period. With a USB interface and NIST Certification, the SL400 ensures accurate compliance testing for OSHA, MSHA, DOD, ACGIH, and ISO standards.
Engineered for versatility and ease of use, it allows users to monitor and document sound levels in dynamic environments. Whether used for workplace safety evaluations or regulatory audits, this device delivers critical noise data with precision and clarity.
What's Included:
- 1 - NIST Certificate of Calibration
- 1 - Belt Clip
- 1 - Clip-on Microphone with 32" L (81.3-cm) Cable
- 1 - USB Cable
- 1 - Carrying Case
- 1 - 9V Battery
Features
Comprehensive Noise Monitoring
Measures frequency weighted noise exposure along with peak (C, Z) sound levels for accurate workplace assessments.
Extensive Datalogging Capacity
Capable of recording up to 999,999 readings, ideal for long-term monitoring with adjustable sampling intervals from 1 second to 24 hours.
Multi-Mode Sound Level Display
Displays sound level, min/max, time-averaged level (Leq), peak, and sound exposure level (SEL) for comprehensive analysis.
Customizable Measurement Settings
Includes adjustable criterion level, exchange rate, and threshold, plus one user-defined measurement setup.
Calibration Capability
Compatible with an optional 94dB calibrator (not included) for before-and-after checks in line with ANSI standards.
USB Connectivity
Equipped with a USB interface and Windows-compatible software for setup control, data retrieval, and real-time analysis.
NIST Certified
Includes official NIST calibration to ensure high accuracy and compliance for professional use.
What's Included
Included with Your Purchase:
- 1 - NIST Certificate of Calibration
- 1 - Belt Clip
- 1 - Clip-on Microphone with 32" L (81.3-cm) Cable
- 1 - USB Cable
- 1 - Carrying Case
- 1 - 9V Battery
Specifications
-
Brand: Extech
-
Model: SL400-NIST
-
Condition: New
-
Data Storage Capacity: Up to 999,999 readings
-
Sampling Interval: 1 second to 24 hours
-
Microphone Cable Length: 32 inches (81.3 cm)
-
Interface: USB with Windows-compatible software
-
Calibration: NIST Certificate included
FAQ
Q: Can this dosimeter be used to comply with OSHA standards?
A: Yes, the SL400-NIST is designed to meet OSHA, MSHA, DOD, ACGIH, and ISO noise compliance standards.
Q: What type of data can the SL400 log?
A: It can log sound level, min/max, Leq, peak, SEL, and supports up to 999,999 data points.
Q: Is calibration required and supported?
A: Calibration is supported using an optional 94dB calibrator (not included), and the unit comes NIST certified.
Q: What kind of software is required to retrieve and analyze data?
A: The included software is compatible with Windows and facilitates setup and real-time data analysis via USB.
