Lutron Electronics SL-4023SD User manual

SD card real time data Recorder, USB/RS232

SOUND LEVEL METER

Model : SL-4023SD

Your purchase of this

SOUND LEVEL METE

with SD CARD DATA

RECORDER marks a

step forward for you

into the field of

precision measurement.

Althou

h this METER is

a complex and delicate

instrument, its durable

structure will allow

many years of use if

proper operatin

techniques are

developed. Please read

the followin

instructions carefully

and always keep this

manual within easy

reach.

OPERATION MANUAL

TABLE OF CONTENTS

1. FEATURES.............................................................................. 1

2. SPECIFICATIONS.....................................................................2

3. FRONT PANEL DESCRIPTION....................................................6

3-1 Display..............................................................................6

3-2 Power Button ( ESC, Backli

ht Button )................................6

3-3 Hold Button ( Next Button )................................................

3-4 REC Button ( Enter Button )...............................................6

3-5 Ran

e Button ( Button, Time Check Button )...................▲6

3-6 A/C Button ( Button, Samplin

check Button )..................▼6

3-7 Fast/Slow Button ( SET Button ).........................................6

3-8 Peak Hold Button ( Lo

er Button ).....................................6

3-9 Microphone.......................................................................

3-10 AC output terminal...........................................................6

3-11 Calibration VR..................................................................6

3-12 RS-232 output terminal.....................................................6

3-13 DC 9V adapter socket.......................................................6

3-14 Tripod Fix Nut..................................................................6

3-15 Battery Cover Screws.......................................................

3-16 Stand..............................................................................6

3-17 Battery compartment/Cover..............................................

3-18 SD card socket.................................................................6

4. MEASURING PROCEDURE.........................................................7

5. DATALOGGER..........................................................................9

5-1 Preparation before execute datalo

er function....................9

5-2 Auto Datalo

er ( Set samplin

time 1 second )..............≧10

5-3 Manual Datalo

er ( Set samplin

time = 0 second )...........

5-4 Check time information.......................................................12

5-5 Check samplin

time information.........................................12

5-6 SD Card Data structure.......................................................12

6. Savin

data from the SD card to the computer........................... 14

7. ADVANCED SETTING................................................................15

7-1 Set clock time ( Year/Month/Date, Hour/Minute/ Second ).....16

7-2 Decimal point of SD card settin

..........................................17

7-3 Auto power OFF mana

ement ............................................17

7-4 Set beeper Sound ON/OFF..................................................18

7-5 Set samplin

time .............................................................

7-6 SD memory card format.....................................................

8. POWER SUPPLY from DC ADAPTER...........................................

9. BATTERY REPLACEMENT..........................................................19

10. RS232 PC serial interface........................................................20

11CALIBRATION .........................................................................21

12. FREQUENCY WEIGHTING CHARACTERISTICS

OF A & C NETWORKS.............................................................22

13. TIME WEIGHTING (FAST & SLOW)

CHARACTERISTICS................................................................22

14. PATENT.................................................................................23

1. FEATURES

* Main functions are designed to meet IEC 61672 class 2.

* A & C weighting networks comply with standards.

* 0.5" standard microphone head.

* Time weighting (Fast & Slow) dynamic characteristic

modes.

* 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 the Max. & Min. value.

* Hold and Peak Hold functions.

* Real time SD memory card Datalogger, it Built-in Clock

and Calendar, real time data recorder, sampling time set

from 1 second to 3600 seconds.

* Manual datalogger is available ( set the sampling

time to 0 second ), during execute the manual datalogger

function, it can set the different position ( location ) No.

( position 1 to position 99 ).

* 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.

* LCD with green light backlight, easy reading.

* Can default auto power off or manual power off.

* Data hold, record max. and min. reading.

* Microcomputer circuit, high accuracy.

* Power by UM3/AA ( 1.5 V ) x 6 batteries or DC 9V adapter.

* RS232/USB PC COMPUTER interface.

* Heavy duty & compact housing case.

2. SPECIFICATIONS

Circuit Custom one-chip of microprocessor LSI

circuit.

Display LCD size : 52 mm x 38 mm

LCD with green backlight ( ON/OFF ).

Measurement 30 - 130 dB.

Range

Resolution 0.1 dB.

Function dB ( A & C frequency weighting ),

Time weighting ( Fast, Slow ),

Peak hold, Data hold

Record ( Max., Min. ).

Accuracy Characteristics of " A " frequency

(23 ± 5 )℃weighting network meet IEC 61672

class 2.

Under 94 dB input signal, the accuracy

are :

31.5Hz ± 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

Remark :

The above spec. are tested under the

environment RF Field Strength less

than 3 V/M & frequency less than 30

MHz only.

Frequency Characteristics of A & C.

Weighting

Network 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.

Time Fast - t= 200 ms

weighting * "Fast" range is simulated the human ear

(Fast & Slow) response time weighting.

Slow - t = 500 ms

* "Slow" range is easy to get the average

values of vibration sound level.

Data hold To freeze the measurement value.

Peak hold To keep the peak ( max. ) measurement

value.

Range selector

Auto range :

30 to 130 dB.

Manual range :

3 range, 30 to 80 dB, 50 to 100 dB,

80 to 130 dB, 50 dB on each step,

with over & under range indicating.

Frequency 31.5 to 8,000 Hz.

Microphone Electric condenser microphone.

type

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

size

Calibration VR Build in external calibration VR, easy to

calibrate on 94 dB level by screw driver.

* Calibrated via external SOUND

CALIBRATOR ( SC-941, optional ).

Calibrator B & K (Bruel & kjaer), MULTIFUNCTION

ACOUSTIC CALIBRATOR 4226.

Datalogger Auto 1 second to 3600 seconds

Sampling Time

@ Sampling time can set to 1 second,

Setting range

but memory data may loss.

Manual Push the data logger button

once will save data one time.

@ Set the sampling time to

0 second.

@ Manual mode, can also select the

1 to 99 position ( Location ) no.

Memory Card SD memory card. 1 GB to 16 GB.

Advanced * Set clock time ( Year/Month/Date,

setting Hour/Minute/ Second )

* Decimal point of SD card setting

* Auto power OFF management

* Set beep Sound ON/OFF

* Set sampling time

* SD memory card Format

Over Indication Show " - - - - ".

Data Hold Freeze the display reading.

Memory Recall Maximum & Minimum value.

Sampling Time Approx. 1 second.

of Display

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.

AC output AC 0.5 Vrms corresponding to each

range step.

* Output impedance : 600 ohm.

Power off Auto shut off saves battery life or

manual off by push button.

Operating 0 to 50 .℃

Temperature

Operating Less than 85% R.H.

Humidity

Power Supply

Alkaline or heavy duty DC 1.5 V battery

( UM3, AA ) 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 12 mA.

When SD card save the data but and

LCD Backlight is OFF) :

Approx. DC 51 mA.

If LCD backlight on, the power

consumption will increase approx.

30 mA.

Weight 489 g/1.08 LB.

Dimension 245 x 68 x 45 mm.

( 9.6 x 2.7x 1.9 inch ).

Accessories * Instruction manual.......................

1 PC

Included

Optional * Sound calibrator ( 94 dB ), SC-941.

Accessories * 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.

* Hard carrying case, CA-06.

3. FRONT PANEL DESCRIPTION

Fig. 1

3-1 Display.

3-2 Power Button ( ESC, Backlight Button )

3-3 Hold Button ( Next Button )

3-4 REC Button ( Enter Button )

3-5 Range Button ( Button, Time Check Button )▲

3-6 A/C Button ( Button, Sampling check Button )▼

3-7 Fast/Slow Button ( SET Button )

3-8 Peak Hold Button ( Logger Button )

3-9 Microphone

3-10 AC output terminal

3-11 Calibration VR

3-12 RS-232 output terminal

3-13 DC 9V adapter socket.

3-14 Tripod Fix Nut

3-15 Battery Cover Screws

3-16 Stand

3-17 Battery compartment/Cover

3-18 SD card socket 6

4. MEASURING PROCEDURE

4-1 Sound level meter

1)Power on by pressing the " Power On/Off Button " ( 3-2,

Fig. 1 ) , the meter's default function is " Auto range ",

" A frequency weighting " & " Fast time weighting ". The

LCD display will show the unit " A. Fast Auto ".

2)Select " A " or " C " frequency weighting by pressing the

" A/C Button " ( 3-6, Fig. 1 ) .

Note :

a. The characteristic table of A, C weighting, please

ref. page 22.

b. The characteristic of A weighting is simulated as

the " Human Ear Listening " response.

Typically always select the A weighting when makes

environmental sound level measurement.

c. The C weighting characteristic is near the " FLAT "

response. Typically it is suitable for checking the

noise of machinery ( Q.C. check ) & knowing the

real sound level of the tested equipment.

3)Determine proper measuring range by pressing the

" Range Button " ( 3-5, Fig. 1 ).

After power on the default range is " Auto range ".

In the same time the lower right display will show the text

of " Auto ".

Under the auto range, press the " Range Button " ( 3-5,

Fig. 1 ) once step by step will enter

to the manual range ( range 1, range 2, range 3 ) and

auto range in sequence. There are still 3 manual ranges

for your choice :

Manual range 1 , 30 - 80 dB range :

Display will show the unit of " 30 - 80 ".

Manual range 2 , 50 - 100 dB range :

Display will show the unit of " 50 - 100 ".

Manual range 3 , 80 - 130 dB range :

Display will show the unit of " 80 - 130 ".

4) According to various measuring sound source, select the

Time Weighting ( Fast or Slow ) by pressing the " Time

Weighting Button " ( 3-7, Fig. 1 ).

Note :

a. If select the function of " Fast " time weighting, the

display will show the unit of " FAST".

b. If select the function of " Slow " time weighting, the

display will show the unit of " SLOW ".

4-2 Data Hold

During the measurement, press the " Hold Button " ( 3-3,

Fig. 1 ) once will hold the measured value & the LCD will

display a " HOLD " symbol.

Press the " Hold Button " once again will release the data

hold function.

4-3 Data Record ( Max., Min. reading )

1)The data record function records the maximum and

minimum readings. Press the " REC Button " ( 3-4, Fig.

1 ) once to start the Data Record function and there

will be a " REC " symbol on the display.

2)With the " REC " symbol on the display :

a)Press the " REC Button " ( 3-4, Fig. 1 ) once, the

" REC MAX " symbol along with the maximum value

will appear on the display.

If intend to delete the maximum value, just press

the " Hold Button " ( 3-3, Fig. 1 ) once, the display

will show the " REC " symbol only & execute the

memory function continuously.

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