User Manual Data Logging Sound Level Meter Model - Cole
Contents
1. 12 13 14 15 1 Remove the battery cover on the back and put in three AAA batteries Replace the battery cover 2 See Data Zero Function below to set before powering unit on 3 Press the Power on off button to turn the meter on 4 Press the LEVEL button to select your desired low medium high or auto level Note With selected range ensure that the UNDER or OVER icon is not displayed which indicates you are out of range 5 Select dBA for general noise sound level or dBC for measuring sound level of acoustic material 6 Select FAST for instant sound and SLOW for average sound levels 7 Hold the unit in hand or fix mount it on a tripod and measure sound level at a distance of 3 3 to 4 9 feet 1 to 1 5 meters Data Zero Function 1 Before powering on press and hold the REC button r l 2 While holding the REC button down press p and hold the Power on off button until the L L display reads CLR This indicates that the data in memory has been deleted Enabling the Data Logging Function 1 Press REC button after powering unit on 2 The display will show REC and the unit will begin logging data 3 Press the REC button again to exit recording Note In order to avoid data errors do not power the unit off while in REC mode To ensure data integrity deselect the REC function prior to powering meter off Time and Date Setup 1 Press and hold the SETUP button While holdi2. Davis com Digi Sense 1065DGMAN_20250 29 Rev 1 Manual Part No 00100 60
3. User Manual D DIGI SENSE Data Logging Sound Level Meter with NIST Traceable Calibration Model 20250 29 CE THE STANDARD IN PRECISION MEASUREMENT Introduction The Digi Sense Data Logging Sound Level Meter Model 20250 29 measures sound decibel levels for noise certification and reduction applications The meter conforms to IEC61672 1 Class 2 standard Advanced fea tures include data Hold Max Min readings low medium high ranges over and under range and A and C weighting The unit offers Fast Slow response analog AD DC outputs USB connectivity data logging software backlight display and automatic power off The instrument is fully tested and calibrated to NIST traceable standards Careful use of this meter will provide years of reliable service n kin Check individual parts against the list of items below If anything is missing or damaged please contact your instrument supplier immediately 1 Meter 2 Windscreen 3 Earphone plug 3 5 mm 4 Screwdriver 5 Three AAA batteries 6 USB cable 7 Software 8 User manual 9 NIST traceable calibration report with data Key Features e Wide measurement ranges of 30 to 130 dB e Precision accuracy of 1 4 dB e Meets IEC61672 1 Class 2 standard e User selectable low medium high and auto range measurement levels e A and C frequency weighting e Fast and slow time weighting Memory of 32 700 readings e Max Min and Hold functions e Over and
4. calibrator 1o 94 dB 1 KHz 2 Turn on the switch of cali brator and adjust the CAL potentiometer of the unit until 94 0 dB is displayed 4 acoustic Callarator Specificati Low 30 to 80 dB Medium 50 to 100 dB Range High 80 to 130 dB Auto 30 to 130 dB Resolution 0 1 dB Accuracy 1 4 dB Weighting AandC Time weighting Fast 125 m sec Slow 1 sec Functions Max Min Hold Low medium high ranges Over range Under range A and C weighting Fast Slow response Memory Data logging software Backlit display and Automatic power off Frequency range 31 5 Hz to 8 kHz Dynamic range 50 dB Memory 32 700 readings Display update 2 times sec Connectivity USB Analog output AC DC outputs from earphone outlet AC 1 Vrms DC 10 mV dB Microphone Yo electret condenser microphone Operating conditions 32 to 104 F 0 to 40 C 10 to 90 RH Storage conditions 14 to 140 F 10 to 60 C 10 to 75 RH Approvals 1EC61672 1 Class 2 Display 4 digit backlit LCD with bar graph Dimensions L x W x H 914 x 27 6 x 116 235 x 61 x 27 mm Power Three AAA batteries Weight 9 8 oz 280 g 14 Maintenance Recalibration and Repair Maintenance e When operating the meter in the presence of wind u
5. essing the SETUP button When this symbol is not displayed the meter is trans mitting data to the computer 3 Select the Real Time R from the top menu bar select Setup U from the dropdown menu 4 In the Setup menu screen select the preferred Real Time Sampling Rate then press Start 5 You may stop the data logging function by selecting the Stop symbol located at the top of the menu bar Simply select the Excel document symbol at the top of the menu bar to instantly download your current data session to the preformatted Excel document 6 To set A and B cursors simply double click on the graphical display of data taken and the cursor information will automatically populate within the cursor designated box Remote Data Logging Downloading Data 1 Clear all data from the instrument See Data Zero Function instructions on page 6 2 Set the unit to your desired sampling speed frequency weighting and level settings see pages 8 9 3 Press REC button to begin recording data The REC icon will be displayed in the lower left of the display 4 When data recording is complete push the REC button again to stop the data logging function The REC icon should disappear from the lower left of the display Remote Data Logging Downloading Data continued 5 Connect the meter to the computer via the USB cable See Connecting the USB Cable section on page 10 Select the Sound Meter icon from your desktop Note Software mus
6. ng icon will be displayed Freezing the Reading Press HOLD button to freeze the reading in the display Connecting the USB Cable 1 Turn on the meter and connect the USB cable to the USB port located on the side of the meter 2 Connect the other end of the USB cable to the computer 3 Choose the software COM3 COM 4 Press the SETUP button The auto power off icon will disappear from the display indicating the disabling of the auto power off function and the successful transmission of USB data The USB signal output is a 9600 bps serial interface Installing Software 1 Insert the CD into the PC 2 Run SETUP EXE on the CD Follow the installation wizard to complete the installation 3 Upon successful installation the Sound Level Meter software icon shortcut will be automatically placed on the PC desktop 4 If the USB driver needs to be updated or if you receive the driver error message go to the folder with the driver on the CD and double click the file CP210xVCPInstaller exe to update the driver With disk in the computer D drive USB Driver folder Activating Real Time Data Logging 1 Once the driver software is installed start the applica tion software by selecting the Auto A function from the Com Port dropdown menu at the top of the menu bar Then connect the meter to the computer via the USB cable 10 2 Make sure the auto power off icon does not appear in the instrument display by pr
7. ng the SETUP button press and we D5 2 hold the Power on off button When the j fi TIME symbol appears on the display release the SETUP button The meter is U now in the time and date setup mode Fig 1 see Fig 1 2 Press the SETUP button a second time s8 see Fig 2 3 While viewing the display above press n n the LEVEL button to set the minute Then press the HOLD button to save Fig 2 the desired minute 4 Press the SETUP button a third time H see Fig 3 5 While viewing the display above press h p the LEVEL button to secure the desired hour AM or PM Then press the HOLD Fig 3 button to save the desired hour 6 Press the SETUP button a fourth time on 29 see Fig 4 Fig 4 Time and Date Setup Continued 7 While viewing the display see Fig 4 press the LEVEL button to choose the desired day of the month Then press the HOLD button to save this day 8 Press the SETUP button a fifth time see Fig 5 9 While viewing the display see Fig 5 press the LEVEL button to select the desired month of the year Then press the HOLD button to save this month 10 Press the SETUP button a sixth time see Fig 6 11 While viewing the display see Fig 6 press the LEVEL button for the desired year Then press the HOLD button to save the year This completes the setup process 12 Press the SETUP button a seventh time see Fig 7 This is the time date
8. reset function Press the HOLD button to save The time and date will then return to the original factory time and date setup DATE d 29 Fig 4 BATE 7 k 0 Fig 5 BATE y 06 Fig 6 cSt Fig 7 Note When the batteries fail or are replaced you may have to reprogram the time date Simply follow steps 1 through 11 above Selecting Time Weighting Press the FAST SLOW button to select fast or slow sampling times FAST sampling measurement of one time per 125 mS SLOW sampling measurement of one time per second Viewing the Min and Max Readings 1 Press the MAX MIN button once and MAX icon will appear on the display In this mode the maximum sound level will be captured and held until a higher sound level is captured 2 Press the MAX MIN button again and the MIN icon will appear on the display In this mode the minimum sound level will be captured and held until a lower sound level is captured 3 Press the button one more time to exit the MAX MIN function Selecting Level Range Press the LEVEL button to select low medium high or auto decibel measuring range The selected range will appear in the upper left and upper right of the display LCD Backlight Press the Backlight button to activate or deactivate the display backlight Selecting Frequency Weighting Press A C button to select A or C weighting Either the dBA A weighting or dBC C weighti
9. se the included windscreen to eliminate undesirable signals e Keep microphone dry and avoid severe vibration Cleaning amp Storage e Meter should be wiped regularly with a dry cloth do not use solvents or detergents to clean meter e Do not store or operate the instrument in high temperature and humidity environments see Specifications on page 14 Battery Replacement When the low battery icon appears on the screen replace the three AAA batteries in the rear battery compartment by loosening the screws and removing the battery door Ensure cover is securely refastened when finished Remove batteries if unit is not being used for extended time periods It is recommended that Digi Sense products are calibrated annually to ensure proper function and accurate measure ments however your quality system or regulatory body may require more frequent calibrations To schedule your recalibration please contact InnoCal an ISO 17025 calibration laboratory accredited by A2LA INNOCA L INNOVATIVE CALIBRATION SOLUTIONS Phone 1 866 INNOCAL 1 866 466 6225 Fax 1 847 327 2993 E mail sales innocalsolutions com Web InnoCalSolutions com For Product and Ordering Information Contact lt Cole Parmer EO elivering solurions ou TUS Proven Precise Personal Toll Free 1 800 323 4340 Toll Free 1 800 358 5525 Phone 1 847 549 7600 Phone 1 847 327 2000 Fax 1 847 247 2929 Fax 1 847 327 2700 ColeParmer com Digi Sense
10. t already have been successfully installed 6 Make sure auto power off icon is not displayed in the screen Press SETUP button to deactivate if necessary 7 In the sound level meter software screen select Data logger D from the top menu bar 8 The summarized record of data will then automatically download to the screen and be tagged with ID Date Time Unit Sampling Rate and Nums information 9 Select Export to Excel E from the top menu bar to export data to Excel if desired 10 Double click on summarized data logging record to graphically view the data on the screen Connecting to the External 5 VDC Power Supply Terminal To connect with the 5 VDC power supply the aperture size is external diameter 3 5 mm internal diameter 1 35 mm 12 Using the AC DC Signal Output Earphone DC Output voltage 10 mV dB aoe Output impedance 1 KQ AC f TT i Output voltage 1 Vrms k 4 corresponding to each OUTPUT range step Output impedance 100 Q GROUND Using the Calibration Potentiometer The CAL function is for external standard level calibration adjust ments Note The meter is cali brated against NIST traceable standards before shipment To make calibration adjustments of frequency weighting A weighting time weighting FAST or Level range 50 to 100 dB 1 Insert the microphone housing carefully into the 1 insertion hole hl of the
11. under range indicator e AC DC analog outputs Data logging software with graphical display e Download data via USB connectivity e Large backlit LCD for easy reading e Low battery indicator e Auto power off after fifteen minutes of nonuse to conserve battery power M D rr Windscreen LCD REC button SETUP button FAST SLOW button MAX MIN button LEVEL V button Backlight 4 button o N OO A U N o A C frequency weighting HOLD button Power on off button External DC 5V power supply terminal 13 USB interface EE N Oo 14 Pets ee earphone outlet a 15 Calibration potentiometer at e 16 Tripod mounting screw K T 17 Battery cover 18 Microphone Display Layout 1 Under range icon 10 Auto power off icon 2 Over range icon 11 Low battery amp 4 indication 3 Maximum hold icon 12 Recording icon 4 Minimum hold icon 13 Memory full icon 5 Fast response icon 14 A Weighting icon 6 Siow response icon response to human sense 7 Selected level range 1o ae a nena 8 Date and time symbols 16 Auto level range selection 9 Reading of sound level 17 Data Hold function icon a ito B 3 MAX MIN FAST SLOW 6 BB atures 28 igual se 88 Bn 1000 OOo 10 REC dBA im 6 ies i dBG HOLD 17
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