Extech Instruments SL355, User Manual

Page 1: ...USER MANUAL Noise Dosimeter Datalogger and Sound Level Meter With PC Interface Model SL355 Additional User Manual Translations available at www extech com ...

Page 2: ...ta 9 8 5 Data Mode Menu Table 10 8 6 Data Mode Meter Screen Shots 11 8 6 1 Select Dose Meter Setup from Memory 11 8 6 2 Measure and Store Dose Data 11 8 6 3 Screen Shots for Recalling and Reviewing Dose Data 14 9 Sound Level Meter SLM Mode 15 9 1 SLM Menu Table 15 9 2 SLM Screen Shots 16 10 Meter Setup Software Method 18 11 Meter Setup Manually 18 11 1 SETUP Mode 18 11 2 SETUP Mode Menu Table 18 1...

Page 3: ...downloaded using the supplied PC software The SL355 Sound Level Meter SLM displays real time sound pressure level SPL readings along with LEQ SEL and elapsed time as a typical type 2 SLM would The SLM has selectable measurement ranges 60 to 130 70 to 140dB A and C frequency weightings Linear Z and C Peak weightings Fast Slow response time settings and an adjustable energy exchange rate Q The SL355...

Page 4: ...s against inadvertent meter operation Included USB PC interface and WindowsTM configuration and datalogging software Kit includes a microphone microphone clip microphone windscreen belt clip batteries protective case keypad cover user guide software CD ROM and USB cable 4 Meter Description 1 Microphone input jack 2 Calibration potentiometer for 114db adjustment 3 LCD Display 4 ON OFF and MENU butt...

Page 5: ...me weighting F Fast response time weighting C C frequency weighting A A frequency weighting 8 dB Percent or decibel readout units 9 Battery status 10 Primary reading date time display or menu items for the programming modes 11 Mode Icons SLM Sound level meter mode DATA Dosimeter Datalogger when flashing Data is recording and the keypad is locked when solid the meter is waiting for the Timer to cou...

Page 6: ... the active arrow buttons appear on the LCD 6 2 Battery Installation Replacement and Disposal 1 Slide the rear battery cover off of the meter 2 Remove the old batteries if applicable and insert three 3 AAA 1 5V batteries Ensure that the battery orientation and polarity are correct Do not mix fresh and partially used batteries 3 Carefully re assemble the meter before use Never dispose of used batte...

Page 7: ...4 db 4 Switch the meter ON 5 Access the Calibration mode CL by repeatedly pressing the MENU button until the CL XX X display is shown and the SLM DATA SETUP and OPTION mode icons are all switched off refer to accompanying screen shot illustration 6 Adjust the meter s potentiometer recessed at top of meter using the supplied adjustment tool until the display reads 114db matching the 114db output le...

Page 8: ...me Range and Peak parameters Note that if a configuration has already been stored it can be recalled in the SETUP mode Reference Section 11 3 for SETUP Mode details 3 In the OPTION mode or using supplied software set the Date Time Test Duration Test Begin BEG time Test End time Sample rate logging period Repeat Pair and Timer functions Reference Section 11 5 for OPTION Mode details Note for an 8 h...

Page 9: ...serve battery power To switch the meter off press and hold the menu button until the unit switches off 11 Dose and TWA calculations are viewable using the PC interface or by navigating the DATA mode refer to the DATA Menu table and Screen Shots below Individually logged readings are retrievable via the PC interface only Follow the directions in the Software User Guide supplied on the enclosed CD R...

Page 10: ...60 to 130db 70 to 140db Measurement Ranges Er Exchange rate Q in db tHr Threshold in db CrIt Criterion level in db LP Logging Period mm ss from 1 sec to 1 hour Scroll the RUN parameter list using the buttons to locate the EPty XX parameter which indicates the number of empty memory locations or runs remaining 00 to 20 if recording is attempted with all memory locations full the meter will display ...

Page 11: ...se Data Operation Press Display Shows Comments 1 Change Operating Mode MENU repeatedly The first screen shows the time Time format is hh mm ss Date format is dd mm yy SPL display 2 Start Run RUN PAUSE When the run TIMER is ON with Beginning and End times set the meter waits showing the REC icon flashing and the time remaining before the run is set to begin When the run TIMER is ON the meter waits ...

Page 12: ...ect the setup for the current RUN To Scroll RUN Begin Time dd hh mm Storage Location for RUN 04 Logging Period mm ss RUN Duration hh mm ss Criterion Level 90db Selected user setup for example ISO with 90db Criterion Level Threshold 70db Measurement Range Exchange Rate 3db ...

Page 13: ...the keys to prevent unauthorized tampering The DATA icon will be flashing The keys and display cannot be locked while the meter is paused 8 Unlock Keypad and at the same time To unlock the keys and display to restore normal operation 9 Stop the RUN MENU A 3 second countdown will start This command must be confirmed immediately before the counter reaches zero by pressing the RETURN button 10 Confir...

Page 14: ...Switch the meter ON The meter always powers up in the Sound Level Meter mode 2 Change the Operating Mode MENU Selecting DATA mode 3 Enable Data Recall Display the Start Date Time for the most recently stored RUN dd hh mm 4 Review Stored RUNS repeatedly Select RUN by Start Date Time 5 Review Stored RUN Shows where data from the selected run is stored 6 Review Stored Data The stored data can be revi...

Page 15: ...weighting and Z for flat or linear response where no frequency weighting is applied In SLM mode the user can also view SEL Single Event noise exposure Level and Leq Equivalent continuous sound pressure Level readings refer to the SLM menu for navigation Refer to the Menu table and Screen Shots provided below illustrative instructions In the Menu table below the user can edit the parameters shown o...

Page 16: ...ode Operation Press Display Shows Comments 1 Switch meter ON Start from the Sound Level Meter mode 2 Review SLM Measurement To Scroll Sound Pressure Level A Frequency Weighting Fast Time Weighting Measurement Duration Time Press RETURN RUN PAUSE button to Enable Data Clear Equivalent Continuous Sound Level Leq Max Peak LLPK or LCPK Z for Linear C for C Weighting Single Event Noise Exposure Level L...

Page 17: ... 5 Switch OFF press 3 seconds Meter display switches OFF Store the range setting Current range is flashing Selected range is flashing Press Return RUN PAUSE to edit the Range Press Return RUN PAUSE to edit Max Peak Press Return RUN PAUSE to edit Fast Slow Response Time Press Return RUN PAUSE to edit A C Frequency weighting Press Return RUN PAUSE to edit the Exchange Rate ...

Page 18: ...or any given meter mode only the active arrow buttons appear on the LCD 3 Switch to the Set Up mode using the MENU button until SET UP is displayed 4 Press or to step through the parameters shown in the menu table below 5 To change a setting of a parameter in the menu below Press and Hold the RUN PAUSE button when the desired parameter is shown the setting value will begin flashing indicating that...

Page 19: ...oaded Setup 3 Inspect and edit settings To scroll Press to edit To change setting Press to confirm Press Return RUN PAUSE to edit the Range Press Return RUN PAUSE to edit Fast Slow Response Time Current User Setup Main screen Press Return RUN PAUSE to edit the Exchange rate Press Return RUN PAUSE to edit the Criterion Level Press Return RUN PAUSE to edit A C weighting Press Return RUN PAUSE to edi...

Page 20: ...20 SL355 en GB_V1 8 8 17 4 Editing example Changing Criterion Level for example The current Criterion Level will be flashing The stored Criterion Level The new selected Criterion Level will be flashing ...

Page 21: ...attery voltage level new alkaline batteries 4 6V tImr TIMER Press RUN PAUSE to toggle the Timer ON OFF Press to skip to the CLrxx parameter Clear memory discussed at the bottom of this menu table With the TIMER set to ON only use to scroll through the test setup items below LP Logging Period mm ss Select a datalogging sampling rate from one second up to 60 minutes 2 sec minimum for 8 hour Dose Pre...

Page 22: ... To change the Start time press RUN PAUSE a pair of digits will flash Press or to change the flashing digits Press or to select another pair of digits When done press RUN PAUSE to store the new Start time Press to move to the next parameter END Test END time HH MM SS To change the Test END time press RUN PAUSE a pair of digits will flash Press or to change the flashing digits Press or to select an...

Page 23: ... meter ON Start from the Sound Level Meter mode 2 Change Mode MENU several times Current Time 3 Scroll options To scroll The display cycles through the remaining options Current Time hh mm ss Current Date dd mm yy Battery status voltage Timer Status Data Clear Use this option with caution ALL DATA CAN BE DELETED ...

Page 24: ...m Step 2 in Section 11 6 2 Enable Time Change Cursors are enabled and the HOURS entry blinks to indicate that it can be edited 3 Change the entry or Use and to highlight an entry Use and to change the entry 4 Save the Changes The new time setting is stored Repeat this process to set the date Note that the date format is dd mm yy ...

Page 25: ... from the following Logging periods 1 2 5 10 15 20 30 seconds 1 2 5 10 15 20 30 60 minutes 2 sec minimum for 8 hour Dose 4 DURATION setting DUR allows the user to select a RUN Duration time When a RUN duration period is shown here it takes precedence over the Timer setting so that any preset start and stop times WILL NOT BE USED Press to enable and then use and to select from the following duratio...

Page 26: ...e dd hh mm The day setting is the day of the month When day is indicated measurement will start on the current day Press to enable use and to selecting the Beginning start time dd hh mm and then confirm with 8 End time This is the first END stop time dd hh mm Press to enable use and to select the End stop time dd hh mm and then confirm with 9 Review other Start End Times repeat Start End times The...

Page 27: ...TORED DATA CAN BE DELETED Operation Press Display Shows Comments 1 Select the Clear Memory option Continued from Section 11 6 2 Enable Clear Memory To toggle steps 1 and 2 Press to Clear all stored data while SurE is displayed or press MENU to abort and select another mode of operation ...

Page 28: ...ting RMS Detector A or C Peak Detector C or Z flat or linear Response Time Weighting Fast and Slow RMS detector Exchange Rate Q 3 4 5 or 6 db Stabilization Time 10 seconds after the meter is switched on Threshold and Criterion Levels Threshold Level 70 90dB in 1dB steps Criterion Level 80 84 85 or 90dB Overload Indication 0 1dB above the selected measurement range Under Range Indication 1dB below ...

Page 29: ... Level dB 90 N A Allows User to Change Setup Yes Yes Measurement Parameters DOSE MODE SLM MODE DOSE SPL TWA LEQ SEL PKZ PC Interface method USB interface meter to PC cable included in kit Battery Three 3 1 5V AAA batteries Battery life Typically 35 hours at room temperature The instrument will automatically stop measuring and store its data before the battery voltage falls below the cut off value ...

Page 30: ... information technology equipment Class B Limits FCC Rules Part 15 Complies with the Limits for a Class B digital device EMC Immunity EN50082 1 1992 Generic immunity standard Part 1 Residential commercial and light industry RF immunity implies that sound level indications of 70dB or greater will be affected by no more than 1 5dB EN 50082 2 1995 Generic immunity standard Part 2 Industrial environme...

Page 31: ...o not allow fully discharged batteries to remain inside the instrument Protect the instrument from impact 15 Software Installation and Operation The supplied CD ROM includes the SL355 Software program driver and the Software Help Guide Please refer to the Software Help Guide for detailed instructions on the use of the supplied software Visit the Extech web site www extech com to check the latest v...

Page 32: ...ous drone or background din The Slow setting is typically specified by OSHA and MSHA standards for use in noise surveys THRESHOLD LEVEL The threshold level is the sound level at which the meter begins to integrate noise into the exposure test For example if the threshold level is set to 85dB the meter will integrate all noise that equals or exceeds 85 dB Sound levels below this threshold would not...