Sound Level Alert - Extech Instruments
Contents
1. EXTECH INSTRUMENTS Sound Level Alert Model SL130 4 10 3 15 Fe LIMIT 15 0 8 User Manual Introduction Thank you for selecting the Extech SL130 Sound Level Alert Designed for wall mount tripod mount desktop or hand held operation this meter meets ANSI and IEC Type 2 Sound Level Meter standards The SL130 offers a High Low Alarm Limit feature where four two color high intensity LEDs and a large OVER indicator provide alarm alerts when limits are exceeded The SL130 s physical Alarm Output circuit can be used to drive the optional Alarm Module Kit to power a larger remote indicating device such as a QUIET sign Professional features include programmable A C Weighting Fast Slow Response time Max Memory with time stamp and a Clock display The microphone can be rotated 180 degrees to accommodate any meter location or it can be placed at a remote location using the optional Remote Microphone Cable A programmable ON OFF time extends battery life to 30 days when programmed 8 hours per day The bright LED s are functional only when the AC power adaptor is used This device is shipped fully tested and calibrated and with proper use will provide years of reliable service Please visit the Extech Instruments website www extech com to check for the latest version of this User Guide Extech Instruments is an ISO 9001 certified company 2 SL130 EU EN v3 6 08 132. Meter Description a O 200 OND Bi ID a 0 Microphone Over Limit Display Bargraph dB display OFF ON AUTO switch Alert LEDs Clock display Max level display with time stamp Set limit MAX RESET button Rear Control Panel oa wD Range select switch Time set buttons Limit set buttons Calibration adjustment A C select button F S select button Side Panel 1 2 3 4 5 6 Alert switch Green position Alert switch Red Green position Alert switch Red position High Low Alarm switch Remote Alarm output connector AC adaptor connector Rear Panel Tilt stand Battery compartment AC Adaptor connector Remote Alarm output connector Windscreen 2 6 Beng 1 7 MAX 3 l J C 92 1 8 4 10 3 15 4 s dB LIMIT o AS 150 9 5 I Bun t410 1 30 80 80 130 60 110 SL130 EU EN v3 6 08 13 Sound Level Monitor Operation Measurement Considerations 1 Use a windscreen to cover the microphone in windy conditions Calibrate the meter often especially if the meter has been idle for a long period of time Do not store operate the meter in areas of high temperature or humidity Keep the meter and the microphone dry MED Avoid severe vibration when using the meter 6 Remove the battery when the meter will be stored for long periods of time Initial Configuration 1 Connect the AC adaptor to the side or rear
3. For wall mount operation orient the microphone perpendicular to the wall to minimize the affect of acoustic reflections For desk mounting extend the rear legs and lock in place with the hinged locks The tripod mounting nut is located on the bottom of the unit 6 SL130 EU EN v3 6 08 13 Remote Microphone optional The optional 15 remote microphone cable can be used to place the microphone in one location while viewing the dB levels and or generating a high limit alarm at another location To remove the microphone unscrew the holding collar and lift the microphone off the connector The extension cable can then be plugged into the matching connectors Calibration should be performed after the cable is installed Alarm Output optional The alarm output drives the optional Remote Alarm Relay Module cable and relay when the LIMIT set point is exceeded The relay module can be used to power external warning signs QUIET signs or other indicating devices when the sound level is higher than the programmed limit Refer to the manual supplied with the module for connection information HEARING PROTECTION Relay Module REQUIRED Indicating Device Vv AC or DC Power Rear AC Adaptor and Alarm outputs 7 SL130 EU EN v3 6 08 13 Battery Replacement AC power is the norm
4. AC adaptor connector OR Install 8 AA batteries 2 Setting the TIME a Press and Hold the Time SET button until the hours display begins to flash b Press the Time up arrow button until the hour is set c Press the SET button The minutes display will flash Adjust as needed d Press the SET button to step through and the arrow button to adjust Time of day Hour Time of day Minutes Time of day AM PM 24 Hour Year Month Day Auto ON Hour Auto ON Minutes Auto OFF Hour Auto OFF Minute A C Frequency Weighting Change the Frequency Weighting by pressing the A C button The A or C icon will appear on the display With A weighting selected the frequency response of the meter is similar to the response of the human ear A weighting is commonly used for environmental or hearing conservation programs such as OSHA regulatory testing and noise ordinance law enforcement C weighting is a much flatter response and is suitable for the sound level analysis of machines engines etc Most noise measurements are performed using A Weighting and SLOW Response Slow Fast Response Press the F S button to select Fast or Slow response as desired F or S will appear in the bottom of the LCD display Select FAST to capture noise peaks and noises that occur very quickly Select the SLOW response to monitor a sound source that has a consistent noise level or to average quickly changing levels Select SLOW response
5. for most applications 4 SL130 EU EN v3 6 08 13 Range Selection Slide the Range switch to the 30 80 60 110 or the 80 130 position The selected zo 30 80 13 range will be indicated on the LCD bar graph Ifthe measured dB level exceeds Bng the range selected OL will be displayed If the measured dB level is below the 60 110 selected range will be displayed Normally select the range in which the upper dB level is greater than any expected sound pressure level The 60 to 110dB range is the most commonly used range Use the 30 to 80dB range in quieter areas such as offices and classrooms Note When the range is changed the Max display may indicate an overload OL Press the MAX RESET button to clear the MAX display High Limit Set Press the up or down LIMIT arrow buttons to set the High Low limit set point LI M IT as displayed on the LCD If the measured dB level exceeds the set limit the LIMIT gt my OVER indication will appear in the display and the over limit signal will appear I Li dB at the alarm output connector The display indication and output signal will remain active as long as the sound pressure level exceeds the set limit High Low LED Alert The four LEDs are used to alert users when a sound level either exceeds or goes below the Limit set point This feature is available only while the AC adaptor is used to power the meter It is disabled under battery power The LEDs will provide a steady
6. or flashing colored indication depending on the setting of the side panel ALARM and Alert switch settings The three Alert switch positions are 1 RED 2 RED GREEN 3 GREEN B 2 3 Alarm Alert Switch LED response Switch Red 1 LED s flash red while dB level exceeds set point LED s flash red while dB level exceeds set point High Red Green 2 40 second green indication when level transitions from high ALARM to low Green 3 40 second green indication when level transitions from high to low Green 3 LED s are green while dB level is below set point LED s are green while dB level is below set point Low ALARM Red Green 2 40 second flashing red indication when level transitions from low to high Red 3 40 second flashing red indication when level transitions from low to high 5 SL130 EU EN v3 6 08 13 MAX Hold The MAX display indicates and holds the highest dB level measured since the meter was turned on or since the Max Reset button was pressed The time and date of the max reading is also displayed G 18 To clear the display and start a new measurement session press the front panel 4 10 3 5 MAX RESET button If the measured level exceeds the maximum for the range ne nt selected the MAX display will indicate OL overload Programmable OFF ON AUTO time The meter is powered by 8 AA batteries
7. al power source for this meter If 8 AA batteries are used they are located in the rear battery compartment When the battery icon appears on the meter s LCD it is time to replace the batteries 1 Turn power off 2 Open the rear battery cover 3 Insert the batteries into battery holder observing the correct polarity 4 Put the battery cover back in place You as the end user are legally bound Battery ordinance to return all used batteries and accumulators disposal in the household garbage is prohibited You can hand over your used batteries accumulators at collection points in your community or wherever batteries accumulators are sold a Disposal Follow the valid legal stipulations in respect of the disposal of the device at the end of its lifecycle Specifications Applicable standards Meets IEC 60651 1979 and ANSI S1 4 1983 Type 2 SLM standards Display 11 7 x 7 94cm 4 6 x 3 125 multifunction LCD Frequency bandwidth 31 5 Hz to 8 KHz Accuracy Resolution 1 5dB under reference conditions 0 1dB Microphone 0 5 Electret Condensor Microphone remote mic option Measurement ranges 30 to 80dB 60 to 110dB 80 to 130dB Frequency weighting A and C Response time Fast 125ms Slow 1s Max Hold Maximum reading is displayed with time stamp Alarm output 3 5mm Mono Phone Plug 3 4mA 5 Vdc typical Limit range 30 to 130dB Under range indicatio
8. n eel te Over range indication OL Power AC adaptor 9V 500ma or 8 AA batteries Battery life 240hrs continuous approx 30 days 8hrs day LED s are not functional when battery powered Operating temperature 0 to 50 C 32 to 122 F Operating humidity Less than 80 RH Dimensions Weight 22x18x3 2cm 285g 8 75x7 1x1 25 0 63 Ibs Copyright 2013 FLIR Systems Inc All rights reserved including the right of reproduction in whole or in part in any form 1SO 9001 Certified www extech com 8 SL130 EU EN v3 6 08 13
9. or via an AC adaptor for permanent installations Continuous battery life is approximately 240 hours 10 days By programming the ON OFF time the battery life can be greatly extended 30 days assuming an 8 hour day The BJ and times are programmed as described in the initial configuration paragraph The meter will operate continuously with the power switch in the ON position The ON OFF time OFF a AUTO will be controlled by the meter when the power switch is set to the AUTO position Calibration The sound level meter should be calibrated on a regular basis to assure that the meter s performance and microphone sensitivity has not change Some operational directives require daily calibration checks OSHA Extech offers several acoustic calibrators to perform the calibration 1 Set the meter to the 60 to 110dB or 80 to 130dB range 2 Place the external calibrator over the Sound Level Monitor s microphone and turn the Calibrator on 3 The meter should read close to the calibrator s dB output level Sem 358 330 Typical Calibrator output levels are 94dB and 114dB au nits 4 lf the meter is within 0 2 dB of the calibrator s output no ls um adjustment is necessary d A S 95 08 5 Adjust the calibration pot on the rear of the meter to the proper level Meter Placement The meter can be used Handheld Wall mounted Desk mounted or Tripod mounted
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