OPERATION MANUAL. auto range + type K Temp. optional Humidity, Light, Anemometer SOUND LEVEL METER Model : SL-4112

Transcription

1 auto range + type K Temp. optional Humidity, Light, Anemometer SOUND LEVEL METER Model : SL-4112 Your purchase of this SOUND LEVEL METER marks a step forward for you into the field of precision measurement. Although this METER is a complex and delicate instrument, its durable structure will allow many years of use if proper operating techniques are developed. Please read the following instructions carefully and always keep this manual within easy reach. OPERATION MANUAL

2 TABLE OF CONTENTS 1. FEATURES SPECIFICATIONS Electrical specification for Sound level meter Electrical specification for Type K/J thermometer General specification Electrical specifications for optional probe EM-900P FRONT PANEL DESCRIPTION Microphone Display Power Button ( Send Button ) Hold Button ( ESC Button ) REC/Max. Min. Button Mode Button ( Logger Button, Enter Button ) A/C Weighting Button ( / Button ) F/S Button ( Time Weighting Button ) /Unit Button PH Button ( Peak Hold Button ) /Setting Button Temperature input socket EM-900P probe input socket A Probe lock switch Screws for battery cover Tripod Fix Nut Stand Battery compartment / Cover AC Output Socket Sound Calibration VR RS232 Computer Interface Socket DC 9V Power Adapter Input Socket... 8

3 4. MEASURING PROCEDURES Sound level meter Type K/J thermometer EM-900P ( Humidity, Anemometer, Light ) Data Logger FURTHER SETTING Thermometer, type K. type J selection Auto power ON/OFF Change the data logger sampling time To show the balance data numbers in the memory Clear the existing saving data from the memory Code entering for the further calibration usage SIGNAL OUTPUT AC output RS232 computer interface REPLACEMENT of BATTERY CALIBRATION OF SOUND LEVEL METER HOW TO SEND THE DATA OUT FROM THE METER FREQUENCY WEIGHTING CHARACTERISTICS OF A & C NETWORKS TIME WEIGHTING (FAST & SLOW) CHARACTERISTICS...22

4 1. FEATURES * Large LCD display, easy to read. * Frequency and Time weighting meet IEC class 2. * A, C frequency weighting networks is selected. * Time weighting (Fast & Slow) dynamic characteristic modes. * 0.5" standard microphone head. * AC output for system expansion. * RS232 computer interface. * 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 MAX. Hold functions. * Build in type K and type J thermometer. * Optional probe ( EM-900P ) for Humidity/Temp., Light and Anemometer measurement. * DC 1.5 V battery ( UM-4, AAA ) X 6 or DC 9V adapter in. * Operation key used push button. * LCD display for low power consumption & clear read-out even in bright ambient light condition. * Using the durable, long-lasting components, including a strong, light weight ABS-plastic housing case. * Small and light weight design allow one hand operation. * Patent. 1

5 2. SPECIFICATIONS 2-1 Electrical specification for Sound level meter Function Meter default function db ( A & C frequency weighting ), Time weighting ( Fast, Slow), Hold, Memory ( Max. & Min. ), Peak hold, AC output, RS232 output. Range set to auto range. Frequency weighting set to A weighting. Time weighting set to fast db. Measurement Range Resolution 0.1 db. 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 type Electric condenser microphone. Microphone size Out size, 12.7 mm DIA. ( 0.5 inch). Frequency weighting Characteristics of A & C. 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. 2

6 Range selector Manual range: 3 ranges ( 30 to 80 db, 50 to 100 db, 80 to 130 db ). Auto range: db. Time weighting Fast - t= 200 ms, Slow - t = 500 ms, ( Fast & Slow ) * "Fast" range is simulated the human ear response time. * "Slow" range is easy to get the avg. values of vibration sound level. * The "Fast" & "Slow" response range are designed to meet IEC class 2 requirement. Calibrator B & K (Bruel & kjaer), MULTIFUCTION ACOUSTIC CALIBRATOR Output Signal * AC output : AC 0.5 Vrms corresponding to each range step. Out put impedance ohm. * RS232 output. Output terminal Terminal 1 : RS232 computer interface terminal, photo couple isolated. Terminal 2 : AC output terminal. Terminal socket size : 3.5 mm dia. phone socket. Calibration VR Build in external calibration VR, easy to calibrate on 94 db level by screw driver. 3

7 2-2 Electrical specification for Type K/J thermometer Sensor Reso- Range Accuracy Type lution Type K to ± ( 0.4 % ) to ± ( 0.4 % + 1 ) to ± ( 0.4 % ) to ± ( 0.4 % ) Type J to ± ( 0.4 % ) to ± ( 0.4 % + 1 ) to ± ( 0.4 % ) to ± ( 0.4 % ) * Accuracy value is specified for the meter only. * Temp. probe ( Type K, TP-01 TP-02A, TP-03. TP-04 ) is the optional accessories. 2-3 General specification Display 51 mm x 37 mm LCD (Liquid crystal display), 5 digits with annunciator. Operating Temp. 0 to 50 ( 32 to 122 ). Operating Humidity Less than 80% RH. Power Supply DC 1.5 V battery ( UM4, AAA ) x 6 PCs, or equivalent. Power Approx. DC 12 ma. Consumption Dimension 245 x 68 x 41 mm ( 9.6 x 2.7 x 1.6 inch). Weight 358 g/0.79 LB (including battery). Accessory Included Instruction Manual... 1 PC. 4

8 Optional 94 db Sound Calibrator : Accessories Model : SC-941. SC-942. Sound wind shield ball Model : SB-01 RS232 cable ( isolated RS232 cable ) : Model : UPCB-02. USB cable Model : USB-01 Application windows software : Model : SW-U801-WIN. Type K Temperature probe : Model : TP-01 TP-02A, TP-03. TP Electrical specifications for optional probe EM-900P Anemometer A. Air velocity Measure- Range Resolu- Accuracy ment tion m/s m/s 0.1 m/s ± (2% m/s) km/h km/h 0.1 km/h ± (2% km/h) mph mile/h 0.1 mile/h ± (2% mile/h) knot knots 0.1 knots ± (2% knots) FPM ft/min 1 ft/min ± (2%+40 ft/min.) Note: m/s - meters per second km/h - kilometers per hour FPM - feet per minute knot - nautical miles per hour mph - miles per hour (international knot) B. Temperature Measuring Range 0 to 50 /32 to 122 Resolution 0.1 /0.1 Accuracy ± 0.8 /1.5 5

9 Humidity/Temp. meter A. Humidity Measuring Range Resolution Accuracy 0 % to 95 % R.H. 0.1 % R.H. 70%RH ± (3% reading + 1% RH). < 70%RH ± 3% RH. B. Temperature Measuring Range 0 to 50 /32 to 122 Resolution 0.1 /0.1 Accuracy ± 0.8 /1.5 Light meter Measuring Range LUX 0 to 20,000 LUX. Ft-cd 0 to 1,860 Ft-cd Resolution LUX 1 LUX Ft-cd 0.1 Ft-cd Accuracy ± ( 5% rdg ± 8 dgt ) Note: Ft-cd : Feet candle * Above specification tests under the environment RF Field Strength less than 3 V/M & frequency less than 30 MHz only. 6

10 3. FRONT PANEL DESCRIPTION 7

11 3-1 Microphone 3-2 Display 3-3 Power Button ( Send Button ) 3-4 Hold Button ( ESC Button ) 3-5 REC/Max. Min. Button 3-6 Mode Button ( Logger Button, Enter Button ) 3-7 A/C Weighting Button ( / Button ) 3-8 F/S Button ( Time Weighting Button ) /Unit Button 3-9 PH Button ( Peak Hold Button ) /Setting Button 3-10 Temperature input socket 3-11 EM-900P probe input socket 3-11A Probe lock switch 3-12 Screws for battery cover 3-13 Tripod Fix Nut 3-14 Stand 3-15 Battery compartment / Cover 3-16 AC Output Socket 3-17 Sound Calibration VR 3-18 RS232 Computer Interface Socket 3-19 DC 9V Power Adapter Input Socket 8

12 4. MEASURING PROCEDURE 4-1 Sound level meter 1) Power on by pressing the " Power On/Off Button " ( 3-3, 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 " ( 3-7, 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 " ( 3-6, 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 " Mode Button " ( 3-6, Fig. 1 ) more than 2 seconds continuously 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 : 9

13 Manual range 1, db range : * Display will show the unit of " ". Manual range 2, db range : * Display will show the unit of " ". Manual range 3, db range : * Display will show the unit of " ". 4) According to various measuring sound source, select the Time Weighting ( Fast or Slow ) by pressing the " Time Weighting Button " ( 3-8, 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 ". 5) Hold the instrument in hand and point the microphone at measured noise source, the sound level value ( db ) will be displayed on LCD. 6) Peak Hold If intend to maintain the Peak Hold value, press the " PH Button " ( 3-9, Fig. 1 ) and a " PH " symbol will show on the top LCD display. Press the " PH Button again to exit the function. Note : a. When execute Peak Hold function, the time weighting will default to " Fast ", the display will show " FAST " indicator. b. When make the Peak Hold measurement under slow varying noise environment, please select the " Auto range " 10

14 c. When make the Peak Hold measurement under pulse noise environment, it should select to the convenient " manual range " 7) Data Hold During the measurement, pushing the " Hold Button " ( 3-4, Fig. 1 ) will hold the measured value & the LCD will indicate " " symbol. * Push the " Hold Button " again to release the data hold function. 8) Data Record ( Max., Min. reading ) * The data record function displays the maximum and minimum readings. To start the DATA RECORD function, press the " REC Button " ( 3-5, Fig. 1) once. " REC " symbol will appear on the LCD display. * With the " REC " symbol on the display : a) Push the " REC. Button " ( 3-5, 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 " ( 3-4, Fig. 1 ) once a while, then the display will show the " REC " symbol only & execute the memory function continuously. b) Push the " REC. Button " ( 3-5, Fig. 1 ) again, the " REC Min " symbol along with the minimum value will appear on the display. If intend to delete the minimum value, just press the " Hold Button " ( 3-4, Fig. 1 ) once a while, then the display will show the " REC " symbol only & execute the memory function continuously. 11

15 c) To exit the memory record function, push the " REC " button at least 2 seconds continuously. The display will revert back to the current reading. 4-2 Type K/J thermometer 1) Power on by pressing the " Power On/Off Button " ( 3-3, Fig. 1 ), the meter's default function is " Sound level meter with auto range " Press the " Mode Button " ( 3-6, Fig. 1 ) once will enter to " Thermometer ( type K, type J ) * Press the " Mode Button " ( 3-6, Fig. 1 ) once again will revert to " Sound level meter " 2) Under the Thermometer mode, if press the / Button " ( 3-7, Fig. 1 ) can select the Temp. unit to or, in the same time LCD will show the or symbol. 3) The Thermometer is default to " Type K " function, if intend to change the " Type K " to " Type J ", please refer the 5-1 Thermometer, type K. type J selection, page 16. 4) Connect the plug of the Temp. probe ( optional type K probe, TP-01, TP-02A, TP-03, TP-04 ) into the " Temperature input socket " ( 3-10, Fig. 1 ) * When insert the probe plug into the temp. input socket should take care to observe the correct polarity. 5) Data Hold Same as page 11 6) Data Record ( Max., Min. reading ) Same as page 11 12

16 4-3 EM-900P ( Humidity, Anemometer, Light ) 1) Plug the optional probe EM-900P's plug into the " Probe Input Socket " ( 3-11, Fig. 1 ). Slide " Probe lock switch " ( 3-11A, Fig. 1 ) to the " 1 " position. 2) Power on by pressing the " Power On/Off Button " ( 3-3, Fig. 1 ), the meter's default function is " Sound level meter with auto range " Press the " Mode Button " ( 3-6, Fig. 1 ) once will enter to following mode in sequence. Thermometer ( type K, type J ) Anemometer with Temp. Humidity with Temp. Light meter 3) After already select the desiring mode, release the Mode Button ". Press the / Button " ( 3-7, Fig. 1 ) can select the Temp. unit to or, in the same time LCD will show the or symbol. Press the " Unit Button " once can select the display unit for each mode. Anemometer unit : m/s, Km/h, FPM, knot, mph. Light unit : Lux, Ft-cd. 4) Data Hold Same as page 11 5) Data Record ( Max., Min. reading ) Same as page 11 13

17 4-4 Data Logger The data logger function can save 1,600-point measuring data. The data logger procedures are following : a) Press the " REC. Button " ( 3-5, Fig. 1 ) once to start the Data record function and there will be a " REC. " symbol on the display. b) Auto Data Logger ( Sampling time should select to 1, 2, 5, 10, 30, 60, 600, 1800 or 3600 seconds ) Press the " Logger button " ( 3-6, Fig. 1 ) once to start the Data Logger function. The " REC " symbol will flash per 1.5 second when save the data into the memory. Now the Date Logger function is executed. Manual Data Logger ( Sampling time should set to 0 second ) Press the " Logger Button " ( 3-6, Fig. 1 ) once will save the data one time into the memory, at the same time the symbol " REC " will flash once and the beeper will sound. Memory full When execute the data logger function, if the upper display show " FULL " with flashing, it indicate the memory data already over 1,600 no. and the memory is full. 14

18 c) During the Data Logger function is executed, press the " Logger Button " ( 3-6, Fig. 1 ) once will stop the data logger function, the " REC. " symbol will stop to flash. If press the " Logger Button " ( 3-6, Fig. 1 ) once again will continuous the Data Logger function. Note : 1) If intend to change the data logger sampling time, please refer section 5-3, page 17. 2) If intend to know the space of balance data numbers into the memory IC, please refer section 5-4, page 17. 3) If intend to clear the saving data from the memory please refer section 5-5, page ADVANCED SETTING PROCEDURES Before executing Advanced Setting Procedures, exit the " Hold function " and the Record " function first. * Press " Setting Button " continuously at least 5 seconds to enter the setting function. * After already set the desiring value ( function ), press the " Enter button " to save with default. * Press the " Unit button " to the next setting function. * Press the " Button Button " to the next setting function. * Press the " Esc button " to escape the setting procedures. 15

19 a. Hold the " Setting Button " ( 3-9, Fig. 1 ) at least five seconds will enter the Advanced Setting Procedures. b. One by one to press the " Unit Button " ( 3-8, Fig. 1 ) once a while to select the main setting function in sequence and show the text the lower display as : K...Change thermocouple type to type K or type J OFF... Auto power ON/OFF management SP-t... Change the data logger sampling time SPC...To show the balance data numbers in the memory CLr...Clear the existing saving data from the memory Code...Code entering for the further calibration usage 5-1 Change thermocouple type to K or J Change " thermocouple type to K or J " only available for Type K/J Thermometer a. Use " button " ( 3-7, Fig. 1 ) button " ( 3-9, Fig. 1 ) to select " K " or " J ". b. After select the desiring value ( K or J ), press the " Enter button " ( 3-6, Fig. 1 ) to save the data with default. 5-2 Auto power On/Off ( Lower display show " OFF " ) a. Use " button " ( 3-7, Fig. 1 ) button " ( 3-9, Fig. 1 ) to select " YES " or " no ". * YES : Auto power off. * no : Auto power disable. b. After select the desiring function ( YES or no ), press the " Enter button " ( 3-6, Fig. 1 ) to save the function with default. 16

20 5-3 Change the data logger sampling time ( Lower display show " SP-t " ) a. Use " button " ( 3-7, Fig. 1 ) button " ( 3-9, Fig. 1 ) to select data logger sampling time to 0, 1, 2, 5, 10, 30, 60, 600, 1800, 3600 seconds b. After the sampling time value is determined, press the Enter button " ( 3-6, Fig. 1 ) to save the sampling time with default. Note : Set the sampling time to 0 second is used for the manual Data Logger function. 5-4 To show the balance data numbers in the memory ( Lower display show " SPC " ) The display will show the balance data no. that exist into the memory ( allow memorize data no. ). 5-5 Clear the existing saving data from the memory ( Lower display show " CLr " ) a. Use " button " ( 3-7, Fig. 1 ) button " ( 3-9, Fig. 1 ) to select " YES " or " no ". * YES : It will execute the memory clear function.. * no : It will be not to clear the memory. b. If select " YES ", press the " Enter button " ( 3-6, Fig. 1 ) the beeper will sound three sounds for warning, if really intend to clear the memory, then press the " Enter button " again. 17

21 5-6 Code entering for the further calibration usage ( Lower display show " CodE" ) The upper display will show 0 The code setting is used for the further calibration usage. It do not enter any new code, just press the " Enter button " ( 3-6, Fig. 1 ) will finish the Advanced Setting Procedure. 6. SIGNAL OUTPUT 6-1 AC output The sound level meter is provided an 3.5 mm dia. " AC output socket " ( 3-16, Fig. 1 ) for connection with analyzer, level recorder, tape recorder, controller...etc. Note : AC 0.5 Vrms corresponding to each range step. Output impedance ohm. 6-2 RS232 computer interface The instrument is provided an 3.5 mm dia. phone socket ( 3-18, Fig. 1 ) for RS232 computer interface socket. The connector output is a 16 digits data stream which can be utilized to the user's specific application. A RS232 lead with the following connection will be required to link the instrument with the PC serial input. Meter PC (3.5 mm jack plug) (9W 'D" Connector) Center Pin... Pin 4 Ground/shield...Pin 2 Pin K resistor 18

22 The 16 digits data stream will be displayed in the following format : D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Each digit indicates the following status : D15 Start Word D14 4 D13 When send the upper display data = 1 When send the lower display data = 2 D12 & D11 Annunciator for Display = 01 = 02 m/s = 08 km/h = 10 mph = 12 knot = 09 FPM = 11 %RH = 04 db = 17 LUX = 15 Ft-cd = 16 D10 Polarity 0 = Positive 1 = Negative D9 Decimal Point(DP), position from right to the left 0 = No DP, 1= 1 DP, 2 = 2 DP, 3 = 3 DP D8 to D1 Display reading, D8 = MSD, D1 = LSD. For example : If the display reading is 1234, then D8 to D1 is : D0 End Word RS232 setting Baud rate 9600 Parity No parity Data bit no. 8 Data bits Stop bit 1 Stop bit 19

23 7. REPLACEMENT of BATTERY 1) When the left corner of LCD display show " ", it is necessary to replace the battery. However, in-spec. measurement may still be made for several hours after low battery indicator appears before the instrument become inaccurate. 2) Open the " Battery Cover " ( 3-15, Fig. 1 ) away from the instrument by loosing the " Battery Cover Screws " ( 3-12, Fig. 1 ) and remove the batteries. 3) Replace the batteries ( DC 1.5V, UM4/AAA type, 6 PCs ) and reinstate the cover. * Please make attention the polarity of the battery. 4) Make sure the battery cover is secured after changing the battery. 8. CALIBRATION 1) Prepare the optional " SOUND CALIBRATOR ", such as " SC-941 " or " SC-942 ". Power on the Sound Calibrator & plug calibrator output socket into the " Microphone " head ( 3-1, Fig. 1 ) of the Sound Level meter. 2) Select manual range to " db ". 3) Select " Time Weighting " at " Fast " position. 4) Select " A " weighting. 5) Adjust the " Calibration VR " ( 3-17, Fig. 1 ) carefully with a " - " screw driver until the display reading value within " 94 +/- 0.2 " db. 20

24 9. HOW TO SEND THE DATA OUT 1) To send the data out from the meter, exit the " Hold function " and the " Record function " first. 2) Press the " Send Button " ( 3-3, Fig. 1 ) at least 5 seconds until the lower display show " r232 ", then release the button. r The total data logger no. that saved into the memory. 3) Push the " Send Button " ( 3-3, Fig. 1 ) once, the upper no. will count up from 0 until reach the data logger storage no., at the same the storage data logger data will send out the meter from the " RS-232 output terminal " ( 3-18, Fig. 1 ). r232 0 Count up from 0 to the data logger storage no. 4) If intend up load the data to the computer, then should connect the optional RS232 cable/upcb-01 or USB cable/usb-01 and cooperate the Data Logger software ( optional, Model : SW-DL2005 ). 5) Press the " ESC Button " ( 3-4, Fig. 1 ) will escape the data sending function. 21

25 10. FREQUENCY WEIGHTING CHARACTERISTICS OF NETWORKS Frequency A Weighting C Weighting Tolerance Hz Charac. Charac. (IEC class 2) db -3 db ± 3 db db -0.8 db ± 2 db db -0.2 db ± 1.5 db db 0 db ± 1.5 db db 0 db ± 1.5 db 1 K 0 db 0 db ± 1.5 db 2 K +1.2 db -0.2 db ± 2 db 4 K +1 db -0.8 db ± 3 db 8 K -1.1 db -3 db ± 5 db 11. TIME WEIGHTING (FAST & SLOW) CHARACTERISTICS Time Weighting Max. response Tolerance Charac. ref. continuous signal (IEC class 2) F ( Fast ) db + 1 db - 2 db S ( Slow ) db ± 2 db SL4112