Product Description

Lutron SL-4023SD Sound Level Meter

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Real-time measurement and voice recording by saving measurement data on SD Card (supports SD Card 1 to 32 GB). Set the recording frequency to either Auto or Manual. Measurement range Auto at 30 to 130 dB and Manual, divided into 3 measuring ranges: 30 to 80 dB, 50 to 100 dB, 80 to 130 dB. This unit is easy to use. With standard ø0.5 inch microphone and sound measurement standard IEC61672 Class 2.

This sound meter is an ideal tool for everyday uses such as sound level measurement in entertainment venues, engine noise and industrial combustion system noise. or even different environmental sounds.

Features Lutron SL-4023SD Sound Level Meter

Main functions are designed to comply with IEC 61672 class 2
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
Available for external calibration adjustment
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
Innovation and easy operation, the computer doesn’t need to set up 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 load 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.
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

Specifications Lutron SL-4023SD Sound Level Meter

Circuit	Custom one-chip LSI microprocessor circuit
Display	* LCD size : 52 mm x 38 mm * LCD with green backlight (ON/OFF)
Measurement Range	30 – 130 dB
Resolution	0.1 dB
Function	* dB (frequency weighting A & C) * Time weighting (Fast, Slow) * Peak hold, Data hold * Record (Max., Min.)
Accuracy	* The characteristics of the frequency weighted network “A” comply with IEC 61672 class 2. * Under 94 dB input signal, the accuracy is: 31.5Hz ± 3.5dB 63 Hz ± 2.5 dB 125 Hz ± 2.0 dB 250 Hz ± 1.9 dB 500 Hz ± 1.9 dB 1 KHz ± 1.4 dB 2 KHz ± 2.6 dB 4 KHz ± 3.6 dB 8 KHz ± 5.6 dB
Remark: Specifications above. tested in RF Field Strength environment less than 3 V/M & frequency less than 30 MHz only
Frequency Weighting Network	* Characteristics A & C * Weighting : Characteristics simulated in response to “Human Ear Listing”
Usually, when measuring environmental noise levels, always select the A weighting	Weighting C: Characteristics close to the response “FLAT”. Typical, suitable for checking engine noise (Q.C.check) & knowing the sound pressure level of the equipment being tested.
Data storage	To freeze measurement values
Peak hold	To maintain the peak measured value (max.)
Time weighting (Fast & Slow)	* Fast – t= 200 ms The “Fast” range is simulated by weighting human ear response times * Slow – t = 500 ms The “slow” range is easy to get the average sound vibration level
Range selector	* Auto range: 30 to 130 dB * Manual range: 3 ranges, 30 to 80 dB, 50 to 100 dB, 80 to 130 dB, 50 dB at each step, with over & under range indication
Frequency	31.5 to 8000 Hz
Microphone type	Electric condenser microphone
Microphone size	Outer size, DIA 12.7 mm. (1/2 inch)
VR Calibration	Build in external calibration VR, easily calibrated at 94 dB level by screwdriver
Calibrator	B&K (Bruel & kjaer), MULTIFUCTION ACOUSTIC CALIBRATOR 4226
Datalogger Sampling Timing Range	* Auto: 1 second to 3600 seconds * Manual: Press data logger button once will save data once
Memory Card	SD memory card. 1GB to 16GB
Advanced settings	* Set clock time (Year/Month/Date, Hour/Minute/Second) * SD card setting decimal point * Automatic shutdown management * Set Beep sound ON/OFF * Set sampling time * Format SD memory card
More Indication	Show ” – – – -“
Data Store	Freezes display reading
Memory Recall	Maximum & Minimum Value
Display Sampling Time	Approx. 1 second
Data Output	PC PC RS 232/USB interface
Power off	Automatic power off saves battery life or manual power off at the push of a button
Operating Temperature	0 to 50℃
Operating Humidity	Less than 85% R.H
Power Supply	* AA Alkaline or DC 1.5 V heavy duty batteries ( UM3, AA ) x 6 PCs, or equivalent * ADC 9V adapter input. (AC/DC power adapter is optional)
Power Current	Normal operation (without SD card saving data and LCD Backlight OFF)
Approximately. DC 8.5 mA	* When SD card saves data but and LCD Backlight is OFF): Approx. DC 30mA * AWhen the LCD backlight is on, the power consumption will increase by approx. 14 mA
Weight	489 g/1.08 lb
Dimensions	245 x 68 x 45 mm.(9.6 x 2.7x 1.9 inch