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3M SE-400 Sound Examiner Sound Level Meters

Keison Products are proud to introduce the 3M SE-400 Sound Examiner Sound Level Meter range.

The Red models within this range have certified and Intrinsic Safety approvals.

The intuitive interface allows for an out-of-box use with little or no training. User selectable data logging intervals allows for download and analysis with a 3M Detection Management Software (sold separately).

Averaging functionality allows for easy measurement in variable environments making it extremely versatile.

With an optional digital printer its unfaltering printing capabilities provides hard copy documentation in the field.

Options provided to choose from models with Class/Type 1 or Class/Type 2 microphones, depending on the necessity and application. SE-401 and SE-402-R are models that include removable preamp.

Reliable and accurate, this unit meets applicable industry standards. A very useful tool as part of a Hearing Conservation Program - you are guaranteed of accurate data collected.

Data Sheet

3M SE-400 Sound Examiner Sound Level Meters



Parameters: SPL, LMax, LMin, LPk (peak), LEQ/LAVG, LE, Elapsed Time
Peak and Frequency Weighting: A, C, Z
Response Time: Fast and Slow
Ranges: 110 dBA total dynamic measurement range. Overall range 30 140 dBA (single range)
Max Peak Level: 143 dBA (sampled peak)
Exchange Rates: 3, 4, 5 dBA
Status Indicators: Run, Stop, Battery Status, OL (overload), UR (under-range), Run-Time, Locked Status


Size: 11.2" (L) x 2.8" (W) x 1.3" (D) / 28.4 cm (L) x 7.1 cm (W) x 3.3 cm (D) (with preamp and microphone)
Weight: SE-401 model: 12.9 oz / 367.5 g (with preamp and microphone)
SE-402 model: 13.4 oz / 380.5 g (with preamp and microphone)
SE-401-IS model: 14.5 oz / 410 g (with preamp and microphone)
SE-402-IS model: 14.5 oz / 410 g (with preamp and microphone)
Housing: ABS Polycarbonate IP65. (Enclosure rated to IP65. Microphone and external connectors not IP rated.)
Tripod Mount: Standard photographic mount on backside accepts " 20 screw threads
Drop Protection: Minimum 2 meters onto concrete, 2 times on each face. Acceptable microphone damage.


Operating Temperature: -10C to 50C (14F to 122F)
Humidity: 0 to 90% RH, non-condensing
Storage Temperature: -20C to 60C (-4F to 140F)
Atmospheric Pressure: Operating: 80 to 110 kPa;
Storage: 50 to 150 kPa

Power / Electrical Characteristics

Battery: Lithium Polymer: 2500 mAHr for standard models / 1500 mAHr for IS models, rechargeable. Run-Time: 18 hours minimum (excluding the backlight) for standard models / 8 hours for IS models
Battery Life: 3 years or 500 cycles (service replaceable)
Battery Charge: USB charger is provided with instrument.
Battery charge time: 8 hours (approx.)
Internal Memory: 2MB (34 days at 1-minute logging)
Communications: USB Interface Standard Microphones: Class/Type 1 Precision QE4936 microphone Class/Type 2 General QE7052 microphone
Preamplifier: Preamp directly accepts " (13.2 mm) microphone
Remote Cable: Drives up to 15 m (50 ft) of cable with negligible signal loss (not available on IS)

Ports and Connections

AC/DC Output: 3.5 mm stereo (tip AC, center ring DC, ring Gnd); not applicable to IS models I/O Connector: RS-232 (I/O connector not applicable to IS models)
USB: Conforms to USB 2.0, mini-USB connector Conformance to Standards
IEC 61672-1 (2002): Electroacoustics, Sound Level Meters, Part 1: Specifications
American National Standards: ANSI S1.43-1997 (R2007): Specifications for Integrating Averaging Sound Level Meters.
ANSI S1.4-1983 (R2006): Specifications for Sound Level Meters CE Mark: Self Certified
Intrinsic Safety Standards UL 913, Ed.7, 2011-09-23; CSA C22.2 (SE-401 IS and SE-402 IS models): No. 157-92, (R2013); EN 60079-0 (2009); EN 60079-11 (2012); EN 60079-26 (2007); IEC 60079-0 Ed.5 (2007); IEC 60079-11 Ed. 6: (2012); IEC 60079-26 Ed. 2: (2009), CE mark 0539
Certificate Number: IECEx UL 13.0006X, Class I, Division 1, Groups C and D; Exi is defined as Intrinsically Safe (for use in potentially explosive atmospheres)
Hazardous Locations Class: II 1 G Ex ia IIB T4 (DEMKO 13 ATEX 1210031X); Ambient temperature range: -20C to +50C

Ordering Information

SE-401 - 70071607959
SE-402 - 70071607942
SE-402-R - 70071622164
SE-401 IS - 70071607934
SE-402 IS - 70071607967
DMS Detection Management Software - 70071608213

Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product.

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