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Product Features
  • Red models have Intrinsic Safety approvals
  • Intuitive interface allows for out-of-box use with little to no training
  • User selectable data logging intervals for download and analysis with TSI Quest Detection Management Software (sold separately)
Delivery options

At Cadmus Products we aim to deliver orders efficiently and at highly competitive rates. 

  • We can ship consignments of all shapes and sizes and hazardous content across the UK and worldwide. Most of our orders are sent via DHL, however sometimes we may use other couriers.
  • If you are purchasing a laboratory product online you can find out the price of shipping checkout. If you are obtaining a quote for a product, then we will email you
    with our best shipping prices along with your quote.
  • Please see our delivery page for full information

TSI Quest SE-400 Series Sound Examiner Sound Level Meters


The TSI Quest SE-400 Series Sound Examiner Sound Level Meters are engineered to accurately measure noise levels in highly variable environments, including those that require intrinsic safety.

These meters compute average sound pressure level (LEQ/LAVG) over the run time, helping you to more accurately assess occupational and environmental noise levels. All models are ready to use with no set-up required.

Standard features:

  • Red models have Intrinsic Safety approvals
  • Intuitive interface allows for out-of-box use with little to no training
  • User selectable data logging intervals for download and analysis with TSI Quest Detection Management Software (sold separately)
  • Averaging functionality allows for easy measurement in variable environments
  • Printing capability with optional digital printer* provides hard copy documentation in the field
  • Choose from models with Class/Type 1 or Class/Type 2 microphones, dependent on your application
  • SE-401 and SE-402-R models include removable preamp
  • Meets applicable industry standards
  • Useful tool as part of a Hearing Conservation Program; be confident that data collected is accurate

Choice of Microphones:

  • User can specify microphone type (Class/Type I or Class/Type II) based on application.
  • Select Type II for general duty; Type I accuracy for legal metrology.

Removable preamp:

  • Preamp can be easily removed to enable interference-free low-level monitoring, especially for remote use.

Aerodynamic shape:

  • Minimises disturbance to sound fields being measured, assuring accurate readings.

Onboard data logging:

  • Allows user to capture maximum, minimum and peak values for thorough analysis.
  • Can be used with TSI Quest Detection Management Software DMS to manage compliance with hearing conservation programs.

Conformance to standards:

  • Meets IEC 61672-1 (2002) and ANSI S1.43-1997 (R2007) standards and is CE certified.
  • Intrinsic Safety approvals on SE-401-IS and SE-402-IS.

Product Specification

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 ¼” – 20 screw threads
Drop Protection: Minimum 2 meters onto concrete, 2 times on each face. Acceptable microphone damage.
Operating Temperature: 14 °F to 122 °F (-10 °C to 50 °C )
Humidity: 0 to 90% RH, non-condensing
Storage Temperature: -4 °F to 140 °F (-20 °C to 60° C)
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 ½” (13.2 mm) microphone
Remote Cable: Drives up to 50 ft (15 m) 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
ANSI S1.43-1997 (R2007): American National Standards:
- Specifications for Integrating Averaging
- Sound Level Meters
ANSI S1.4-1983 (R2006): Specifications for Sound Level Meters
CE Mark: Self Certified
Intrinsic Safety Standards (SE-401 IS and SE-402 IS models): Contact for detailed information
SE-400 Series
  • SE-402 Examiner SE-402
  • SE-402-AC3 SE-402 Kit W/AC-300
  • SE-402-ISSE-402IS Kit
  • SE-402-IS-AC3 SE-402IS Kit W/AC-300
  • SE-402-R-AC3 SE-402-R Kit W/AC-300
  • SE-401-AC3 SE-401 KIT W/AC-300
  • SE-401-IS SE-401IS Kit
  • SE-401-IS-AC3 SE-401IS Kit W/AC-300
Accessories and Replacement Parts
  • 056-988 Assy, B&K 0.250 Mic Adapter
  • 056-990 Assy, B&K 0.500 Mic Adapter
  • 059-587 ICM-100 MICROPHONE CABLE 100FT
  • 057-342 SE-400 Printer Cable
  • 053-321 Assy, 5W USB Wall Adapter + 4 Plugs
  • WS-7 1/2" WINDSCREEN (PKG OF 3)
  • 059-045 Tripod, SUNPAK 4200XL
  • 056-164 WRIST STRAP, 1/4"-20
Calibration and Repair
  • CA-SE-401 SE-401 Accredited Calibration
  • RA-SE-401 SE-401 Accredited Repair & Calibration
  • RS-SE-401 SE-401 Standard Repair & Calibration
  • CS-SE-401 SE-401 Standard Calibration
  • CA-SE-402 SE-402 Accredited Calibration
  • RA-SE-402 SE-402 Accredited Repair & Calibration
  • RS-SE-402 SE-402 Standard Repair & Calibration
  • CS-SE-402 SE-402 Standard Calibration
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