Lutron SL-4035SD Integrating Sound Level Meter

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Lutron SL-4035SD Integrating Sound Level Meter

Innovation and easy operation, the computer doesn’t need to prepare extra software, after running the datalogger, just take out the SD card from the meter and plug the SD card into the computer, it can download all measured values ​​with time information (year/month/date/hour/minute /sec ) to Excel directly, then users can make further data or chart analysis by themselves.

Product Description

Lutron SL-4035SD Integrating Sound Level Meter

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Frequency and Time weighting is designed to comply with IEC 61672 class 2.

Innovation and easy operation, the computer doesn’t need to prepare extra software, after running the datalogger, just take out the SD card from the meter and plug the SD card into the computer, it can download all measured values ​​with time information (year/month/date/hour/minute /sec ) to Excel directly, then users can make further data or chart analysis by themselves.

Features Lutron SL-4035SD Integrating Sound Level Meter

  • The meter with programmable integration time provides precise linearity over a wide range (100dB) and features Leq and SPL measurements
  • The A&C weighting network is standard compliant
  • Standard 0.5″ microphone head
  • Time-weighted dynamic characteristics mode (Fast & Slow)
  • Build external calibration VR
  • Auto range & Manual range selection
  • Condenser microphone for high accuracy & long term stability
  • Memory function to store Max. & Min. mark
  • Hold and Peak Hold function
  • Real-time SD memory card datalogger, Built-in Clock and Calendar, real-time data recorder, sampling time is set from 1 second to 3600 seconds
  • Manual data logger is available (set sampling time to 0 seconds), as long as running manual datalogger function, it can set position(location) No. ( position 1 to position 99 ) are different
  • SD card capacity: 1GB to 16GB
  • LCD with green backlight, easy to read
  • Can auto power off or manual power off
  • Data storage, record max. and min. reading
  • Microcomputer circuit, high accuracy
  • Powered by UM3/AA ( 1.5 V ) x 6 batteries or 9V DC adapter
  • RS232/USB PC PC interface
  • Heavy duty & compact housing case. Leq, SPL, MAX-S, and MIN-S measurements

Specifications Lutron SL-4035SD Integrating Sound Level Meter

CircuitCustom one-chip LSI microprocessor circuit
DisplayLCD size : 52 mm x 32 mm
LCD with green backlight (ON/OFF)
Measurement TypeSPL : Sound pressure level
Leq : Equivalent Continuous Noise Level
Measurement Range30 – 130 dB
Resolution0.1 dB
FunctiondB (frequency weighting A & C)
Time weighting (Fast, Slow)
Peak hold, Data hold
Record (Max., Min.)
Accuracy* The characteristic of the frequency weighted network “A” complies with IEC 61672-1-2013 class 2
* Under 94 dB input signal, the accuracy is:
31.5 Hz ± 3.0 dB
63 Hz ± 2.0 dB
125 Hz ± 1.5 dB
250 Hz ± 1.5 dB
500 Hz ± 1.5 dB
1 KHz ± 1.0 dB
2 KHz ± 2.0 dB
4 KHz ± 3.0 dB
8 KHz ± 5.0 dB
Remarks : Specifications above. tested in an RF Field Strength environment less than 30 MHz only
Frequency Weighting NetworkCharacteristics A & C.
Weighting : Characteristics are simulated in response to “Human Ear Listing”. Usually, when measuring environmental noise levels, always select the A weighting.
C weighting : Characteristic close to “FLAT” response. Typical, suitable for checking engine noise (Q.C.check) & knowing the sound pressure level of the equipment being tested.
Peak holdTo maintain the peak measured value (max.)
Data storageTo freeze measurement values
Time weighting (FAST & SLOW)Fast – t = 125 ms The “Fast” range is simulated by weighting human ear response times.
Slow – t = 1 s The “Slow” range is easy to get the average value of the sound vibration level.
Range selectorAuto range: 30 to 130 dB
Manual range: 2 ranges, 30 to 80 dB, 80 to 130 dB, 50 dB at each step, with over & under range indication
Frequency31.5 to 8000 Hz
Microphone typeElectric condenser microphone
Microphone sizeOuter size, DIA 12.7 mm. (1/2 inch)
VR CalibrationBuild in external calibration VR, easily calibrated at 94 dB level by screwdriver
CalibratorB & K (Bruel & kjaer), MULTIFUNCTIONAL ACOUSTIC CALIBRATOR Type 4226
Datalogger Sampling Timing RangeAuto: 1 second to 3600 seconds
Manual: Press data logger button once will save data once
Memory CardSD memory card. 1GB to 16GB
Advanced settingsSet clock time (Year/Month/Date, Hour/Minute/Second)
Set sampling time
Auto shutdown management
Set Beep sound ON/OFF
SD card setting decimal point
Format SD memory card
Frequency weighting to setting A or C
More IndicationShow ” – – – -“
Data StoreFreezes display reading
Memory RetentionMaximum & Minimum Values. (for SPL)
Display Sampling TimeApprox. 1 second
Data OutputPC PC RS 232/USB interface
AC output0.5 Vrms AC per step of the range. * Output impedance: 600 ohms
Power offAutomatic power off saves battery life or manual power off at the push of a button
Operating Temperature0 to 50℃
Operating HumidityLess than 85% R.H
Power SupplyAlkaline or heavy duty DC 1.5 V batteries ( UM3, AA ) x 6 PCs, or equivalent
DC 9V adapter input. (AC/DC power adapter is optional)
Power CurrentNormal operation (no SD card save data and LCD Backlight OFF)
Approximately. DC 12 mAWhen SD card saves data but and LCD Backlight is OFF): Approx. DC 51 mA
If the LCD backlight is on, the power consumption will increase by approx. 30 mA
Weight489 g/1.08 lb
Dimensions245 x 68 x 45mm. (9.6×2.7×1.9 inches)


Accessories Included

  • Instruction manual……………………1 PC
  • Hard carrying case, CA-06………….1 PC

Optional Accessories

  • Sound calibrator ( 94 dB ), SC-941
  • Sound calibrator ( 94/114 dB ), SC-942
  • Sound wind shield ball, SB-01
  • SD Card ( 2 GB )
  • USB cable, USB-01
  • RS232 cable, UPCB-02
  • Data Acquisition software
  • SW-U801-WIN
  • AC to DC 9V adapter
  • Soft carrying case, CA-05A



Lutron SL-4035SD – Datasheet

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Additional Information





Made In



1,5 kg

Accessories Included

Instruction manual
Hard carrying case, CA-06

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