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SOUND LEVEL

METER

INSTRUCTION MANUAL

REC

FAST

A/C

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Summary of Contents for DT-8852

Page 1: ...SOUND LEVEL METER INSTRUCTION MANUAL REC FAST A C ...

Page 2: ...umidity 90 RH Operation Ambient 0 40 z Maintenance Clearing Repair or servicing not covered in this manual should be performed by qualified personnel Periodically wipe the case with a dry cloth Do not use solvents or eradicator on this instrument z Safety symbols Comply with EMC 2 FUNCTIONS DESCRIPTION This Sound Level Meter is designed for noise project quality control illness prevention and cure...

Page 3: ...Meters z MAX MIN measurements z Over range display z Under range display z A C Weighting z FAST SLOW response z Analog AC DC outputs for connection to frequency analyzer or X Y shaft recorder 3 SPECIFICATION Standard applied IEC61672 1 CLASS2 Accuracy 1 4dB Frequency range 31 5HZ 8KHZ Dynamic range 50dB Level ranges LO 30dB 80dB Med 50dB 100dB Hi 80dB 130dB Auto 30dB 130dB ...

Page 4: ...MAX hold Hold the Maximum reading MIN hold Hold the Minimum reading HOLD Hold the readings Alarm function OVER is when input is more than upper limit of range UNDER is when input is less than upper limit of range Analog output AC DC outputs from earphone outlet AC 1Vrms DC 10mV dB Data output USB data traffic Auto power off Meter automatically shuts down after approx 15 minutes of inactivity ...

Page 5: ...mperature and humidity 0 40 10 RH 90 RH Storage temperature and temperature 10 60 10 RH 75 RH Dimension 278 L x 76 W x 50 H mm Weight 350g Accessories Instruction manual battery screwdriver 3 5mm earphone plug windscreen software USB cable 4 NAME AND FUNCTIONS REC FAST A C 1 2 3 4 5 8 6 7 10 9 11 ...

Page 6: ...6 DC 9V OUTPUT CAL 18 12 13 14 15 16 17 Windscreen LCD ...

Page 7: ...sponse SLOW Slow response dBA A Weighting responseto human sense dBC C Weighting response to machine monitor 30 130 Range indicate REC Recording data into computer AUTO Auto level range selection FULL Memory full HOLD Data hold function AutopoweroffPress the SETUP button to disable power off Low battery indicate ...

Page 8: ...t the record Note In order to avoid data error please don t power it off under REC condition when the REC function is deleted then it can power off 3 1 Adjusting DATALOGGER response Press the button continuously before power it on then press it will be displayed as following Press LEVEL button to adjust memory time press HOLD button to hold the setup ...

Page 9: ... CLR after the meter power on which indicates that the data in DATALOGGER has been deleted SETUP button 4 0 The time chip adjustment Press SETUP button and then power it on when TIME symbol displays then loosen SETUP the meter will be under time adjustment mode at the time the display will show the date as following ...

Page 10: ...mode press LEVEL to make the adjustment press HOLD to keep the setup Press the SETUP button third time the display showing The display showing hour adjustment mode press h P P M h A A M LEVEL to make the adjustment press HOLD to keep the setup Press the SETUP button fourth time the display showing ...

Page 11: ...s HOLD to keep the setup Press the SETUP button fifth time the display showing The display showing month adjustment mode press LEVEL to make the adjustment press HOLD to keep the setup Press the SETUP button sixth time the display showing The display showing year adjustment mode press ...

Page 12: ...ate have returned to factory setup When the battery is exhausted or replaced if the time can t be adjusted then please initialize the time chip first 4 1 USB communications setting turn on the meter connect the meter with the computer correctly choose the software COM3 COM4 then press SETUP disappears from the display to indicate and disable auto power off that the USB data is transmitting FAST SL...

Page 13: ... LCD maximum sound level will be captured and held until higher sound level is captured Press the button again MIN will appear on LCD and minimum sound level will be captured and held until new lower sound level is captured Press the button one more time to exit MAX MIN measurement LEVEL button Level range selection Each time you press LEVEL button the level range will change between Lo level Med ...

Page 14: ...LOGGER response setting press the button continuously until INT symbol appears after the meter turn on press LEVEL to set up the data memory response then press HOLD to keep the setting Frequency weighting select button A A Weighting C C Weighting HOLD button ...

Page 15: ...ower button Turn the meter power ON OFF External DC 9V power supply terminal For connection with DC 9V power supply Aperture size external diameter 3 5mm internal diameter 1 35mm USB interface USB signal output is a 9600 bps serial interface AC DC signal output earphone outlet ...

Page 16: ...onding to each range step Output impedance 100Ω DC Output voltage 10mV dB Output impedance 1kΩ Calibration potentiometer CALL For external standard level calibration adjustments Tripod mounting screw Battery cover Microphone 1 2 inch Electret Condenser microphone ...

Page 17: ...fully into the 1 2 inch insertion hole of the calibrator 94dB 1kHZ Turn on the switch of calibrator and adjust the CALL potentiometer of the unit 94 0dB is displayed NOTE All products are well calibrated before shipment Recommended recalibration cycle 1 year Acoustic Calibrator REC FAST A C DC 9V OUTPUT CAL 6 MEASUREMENT PREPARATION Remove the battery cover on the back ...

Page 18: ...lug of the adapter 3 5φ into the DC 9V connector on the side panel 7 OPERATING PROCEDURE Power on the meter Press LEVEL button to select desired level base on UNDER or OVER do not appear on LCD Select dBA for general noise sound level and dBC for measuring sound level of acoustic material Select FAST for instant sound and SLOW for average sound level Select MAX MIN button for measuring maximum and...

Page 19: ... high humidity environment ii When not in use for long time please take out the battery to avoid battery liquid leakage and cautery on the instrument iii When using the instrument in the presence of wind it is a must to mount the windscreen to not pick up undesirable signals iv Keep microphone dry and avoid severe vibration 9 accessories installation CD USB interface cable screwdriver ...

Page 20: ...ogram in file DISK1 install it to the referred directory 1 3 install CP210X drive software Connecting the meter with the computer by USB interface install CP2102 drive software in my computer property hardware facility management COM CP210X USB USB Drive Installation 1 Copy the CP210XWIN Drivers to a certain directory ...

Page 21: ...rt will be added to the Ports in the Device Manager Port number will be ranged following the primary COM ports such as COM3 or COM4 1 4 Once the drive software is installed start the application software connect the meter to the computer by USB then search for the COMX port occupied by CP210X press button the symbol will not appear on the display which indicate the meter is transmitting data to th...

Page 22: ... menu REAL TIME SETUP to set the monitoring data data volume response monitoring time 1 6 DATALOGGER menu The computer read the memory data in the meter when REC not appear on the display and the connection is in order ...

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