Sound Examiner SE-401-IS Type 1 by TSI Quest - Sound Level Meter

Intrinsically Safe Area Monitoring Datalogging
Sound Level Meter Manufacturer: TSI Quest
Sound Examiner SE-401-IS Type 1 by TSI Quest - Sound Level Meter
Sound Examiner SE-401-IS Type 1 by TSI Quest - Sound Level Meter
Sound Examiner SE-401-IS Type 1 by TSI Quest - Sound Level Meter

The TSI Quest Sound Examiner SE-401-IS is an intrinsically safe handheld sound level meter rated for use in explosive and flammable atmospheres, meeting ANSI S1.4 Type 2 and IEC 61672-1 Class 2 standards with a 30–140 dB measurement range and a Type 1 microphone. It supports real-time data logging of SPL, Leq, and peak levels with selectable frequency weighting (A, C, Z) and response times, and data transfers via USB to TSI's Detection Management Software for reporting and OSHA compliance.

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$330.00
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What is the TSI Quest Sound Examiner SE-401-IS used for?
The SE-401-IS is a Type 1 integrating sound level meter with intrinsic safety certification, used for precision occupational noise surveys in classified hazardous locations (oil and gas, chemical plants, refineries) where standard SLMs cannot be used. It measures Leq, Lmax, Lpk, TWA, and dose — covering all OSHA 1910.95 occupational noise compliance requirements.
What makes the SE-401-IS unique compared to other Type 1 SLMs?
The SE-401-IS combines Type 1 precision accuracy with intrinsic safety certification (CSA, ATEX, IECEx) for Class I, Div 1/Zone 0 classified hazardous areas. Most Type 1 SLMs are not intrinsically safe. For noise compliance surveys in petrochemical, refinery, or mining environments where Class I hazardous classifications apply, the SE-401-IS is often the only compliant choice.
Does the SE-401-IS include octave band analysis?
The SE-401-IS is a Type 1 integrating SLM. Confirm octave band capability for your specific model with RAECO Rents at 866-736-8347 before ordering, as octave band options vary.
What data does the SE-401-IS record?
The SE-401-IS records time-history data at user-configurable intervals along with Leq, Lmax, Lpk, TWA, and dose values. Data is downloaded via TSI's DMS software for report generation.
Is the SE-401-IS suitable for MSHA mining applications?
Yes. The SE-401-IS's IS certification makes it suitable for underground mining environments where conventional SLMs are not permitted.
What is the SE-401-IS rental rate from RAECO Rents?
Contact RAECO Rents at 866-736-8347 for current SE-401-IS daily and weekly rental pricing. Rental includes the SLM, microphone, windscreen, calibrator, DMS software, and case.

Exposure Hazards This Equipment Detects

Noise (dBA)

CAS: N/A
Learn More
Updated on March 09, 2026
PEL TWA
90 dBA
REL TWA
85 dBA
TLV TWA
85 dBA

Features & Capabilities

Calibration Certificate Available: ✓ Yes
Datalogging: ✓ Yes
Intrinsically Safe: ✓ Yes
Monitoring Scope: Area Monitoring

Equipment Specifications

Type/Class Rating: Type 1 (Class/Type 1 Precision microphone)
Measurement Range: 30 to 140 dBA overall (Max Peak 143 dBA)
Frequency Range: 20 Hz to 20 kHz
Frequency Weighting: A, C, Z
Time Weighting: Fast, Slow
Exchange Rate: 3 dB, 4 dB, 5 dB
Octave Band Filters: Not available on this model
Dynamic Range: 110 dB total dynamic range
Audio Recording: Not available on this model
Data Logging Interval: 1-minute intervals
Data Storage Capacity: 2 MB internal (34 days at 1-minute logging)
Battery Run Time: 8 hours minimum (IS model)
Compliance Standards: IEC 61672-1 (2002), ANSI S1.43-1997 (R2007)

Kit Contents

SE-401-IS Intrinsically Safe Sound Examiner, AC-300 Calibrator & ½” Microphone Adapter, Windscreen, A/C Power Cable with Mini-USB Connection, Mini USB Cable, Wrist Strap, (1) Spare 9v Battery, Phillips Head Screwdriver for AC-300 Battery Replacement, Calibration Certificates (Emailed), Flash Drive with Software and Manuals

Manufacturer Resources

Documents

User manuals, safety guides, and technical documentation from the manufacturer:

Videos

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