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LUTRON MSL-388SD Sound Level Data Recorder

LUTRON MSL-388SD Sound Level Data Recorder
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Kode Lutron MSL-388SD

LUTRON MSL-388SD Sound Level Data Recorder



  • Frequency and Time weighting are designed to meet IEC 61672 class 2.
  • A & C weighting networks comply with standards.
  • LCD is dot-matrix with backlight and easy reading.
  • Data-logger and Sound level meter.
  • 0.5" standard microphone head.
  • Time weighting (Fast & Slow) dynamic characteristic modes.
  • Condenser microphone for high accuracy & long-term stability.
  • Memory function to store the Max. & Min. value.
  • Hold functions.
  • Real time Datalogger Records device of an external   memory device (SD memory card ) ,Real time Datalogger, it Built-in Clock and Calendar, real time data recorder, sampling time set from 5, 10, 30, 60, 120, 300, 600, 1800, 3600 seconds.
  • Manual datalogger is available (set the sampling time to 0 second).
  • Innovation and easy operation,  computer is not need to setup extra software, after execute datalogger, just take away the SD card from the meter and plug in the SD card into the computer, it can download the all the measured    value with the time information (year/month/date/hour/minute/second) to the Excel directly, then user can    make the further data or graphic analysis by themselves.
  • SD card capacity : 1 GB to 16 GB.
  • Can default auto power off or manual power off.
  • 4-20 mA analog output.
  • Microcomputer circuit, high accuracy.
  • Power by UM4/AAA ( 1.5 V ) x 6 batteries or DC 9V adapter.
  • RS232/USB PC COMPUTER interface.
  • Heavy duty & compact housing case.




Custom one-chip of microprocessor LSI circuit.


LCD size : 50 mm x 30 mm

LCD with green backlight (ON/OFF).

Measurement Type

SPL : Sound pressure level

Measurement Range

SPL : 30-80,50-100,80-130, Auto 30 - 130 dB.


0.1 dB


dB (A & C frequency weighting), Time weighting (Fast, Slow), Data hold, Record (Max., Min.).

Accuracy (23 ± 5˚C)

Characteristics of "A" frequency weighting network meet IEC 61672 class 2.

Under 94 dB input signal, the accuracy are :

31.5 Hz | ± 3.5 dB

63 Hz | ± 2.5 dB

125 Hz | ± 2.0 dB

250 Hz | ± 1.9 dB

500 Hz | ± 1.9 dB

1 K Hz | ± 1.4 dB

2 K Hz | ± 2.6 dB

4 K Hz | ± 3.6 dB

8 K Hz | ± 5.6 dB

Frequency Weighting Network

Characteristics of A & C.

A weighting :

The characteristic is simulated as "Human Ear Listing" response. Typical, if making the environmental sound level measurement, always select to A weighting.


C weighting :

The characteristic is near the "FLAT" response. Typical, it is suitable for checking the noise of machinery (Q.C. check) & knowing the sound pressure level of the tested equipment.

Data Hold

To freeze the measurement value.

Time Weighting (FAST & SLOW)

Fast - t = 125 ms

* "Fast" range is simulated the human ear esponse time weighting.

Slow - t = 1 s

* "Slow" range is easy to get the average values of vibration sound level.

Function Selector SPL

Range : 30-80dB, 50-100dB, 80-130dB

Auto range : 30 – 130db.


31.5 to 8,000 Hz.

Microphone Type

Electric condenser microphone.

Microphone Size

Out size, 12.7 mm DIA. ( 1/2 inch).

Calibration VR

Build in external calibration ( key ), easy to calibrate on 94 dB level by key button.

* Calibrated via external SOUND CALIBRATOR  (SC-941, SC-942, optional)



Datalogger Sampling Time Setting Range


5,10,30,60,120,300,600,1800, 3600 seconds

@ Sampling time can set to 1 second, but memory data may loss.


Push the data logger button once will save data one time.

@ Set the sampling time to 0 second.

Memory Device

external memory device ( AC Adapter only ) : SD memory card. 1 GB to 16 GB.

Advance Setting

* Set clock time (Year/Month/Date,Hour/Minute/Second)

* Set sampling time

* Auto power OFF management

* Set beep ON/OFF

* Decimal point of SD card setting

* SD memory card format

Over Indication

Show " - - - - ".

Data Hold

Freeze the display reading.

Memory Recall

Maximum & Minimum value.

Sampling Time of Display

Approx. 1 second.

Data Output

RS 232/USB PC computer interface.

* Connect the optional RS232 cable, UPCB-02 will get the RS232 plug.

* Connect the optional USB cable, USB-01 will get the USB plug.

Power Off

Auto shut off saves battery life or manual off by push button.

Operating Temp. & Humidity

0 to 50˚C, Less than 85% R.H.

Power Supply

* Alkaline or heavy duty DC 1.5 V battery (UM4, AAA) x 6 PCs, or equivalent.

* DC 9V adapter input. (AC/DC power adapter is optional).

Power Current

Normal operation (w/o SD card save data and LCD Backlight is OFF) : Approx. DC 16 mA.

When SD card save the data but and LCD Backlight is OFF : Approx. DC 16 mA.

* If LCD backlight on, the power consumption will increase approx. DC 8 mA.


250 g/ 0.55 LB. (without battery)


132 x 80 x 32 mm. (5.2 x 3.1 x 1.3 inch).

Accessories Included

* Instruction manual.........................................1 PC

* Plug of 4 to 20 mA output ( SKT-AS385 ).........1 PC

* Micophone with clip.................................. 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 (4 GB).

* USB cable, USB-01.

* RS232 cable, UPCB-02.

* Data Acquisition software, SW-E2005.

* AC to DC 9V adapter.

* Appearance and specifications are subject to change without notice.

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