Digital Sound Level Meter
Model SL510
Additional User Manual Translations available at www.extech.com
USER MANUAL
2
Introduction
Thank you for selecting the Extech Model SL510. The SL510 measures sound levels in decibels. This
device is shipped fully tested and calibrated and, with proper use, will provide years of reliable
service. Please visit our website (www.extech.com) to check for the latest version and translations
of this User Manual, Product Updates, Product Registration, and Customer Support.
Features
• Standard 0.5” microphone head
• A/C frequency weighting
• LCD with backlight
• Light weight, compact design
• Wristlet for convenient, one-handed operation
Safety
Please read the entire Quick Start and User Manual before operating this device. Use the meter
only as specified and do not attempt to service or open the meter housing. Do not allow children to
handle the meter or the windscreen. Please dispose of batteries and meter responsibly and in
accordance with all applicable laws and regulations.
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Meter Description
1. Microphone with windscreen
2. LCD Display
3. ON-OFF button
4. LCD Backlight button and ▲ button
5. A/C weighting selection button
6. Hold button
7. Max/Min Record button
8. SET, Peak capture and ▼ button
9. Fast/Slow response selection button
Measurement Considerations
1. Wind blowing across the microphone increases the noise measurement. Use the supplied
windscreen to cover the microphone when applicable.
2. Calibrate the instrument before each use if possible. Especially if the meter has not been
used for a long period of time.
3. Do not store or operate the instrument in areas of high temperature or humidity.
4. Keep meter and microphone dry.
5. Avoid severe vibration.
6. Remove the battery when the meter is to be stored for long periods of time.
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Operation
1. Power the meter by pressing the power button. The meter will begin displaying sound
level readings. If the LCD does not switch on, check the batteries located in the rear battery
compartment.
2. Hold the meter in hand facing the microphone toward the source of the sound to be
measured.
3. View the measurement on the meter’s LCD.
‘A’ and ‘C’ Frequency Weighting
Press the A/C button to select A or C frequency weighting. The A or C icon will appear in the
display to indicate the weighting selected.
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 FAST Response.
‘FAST’ and ‘SLOW’ Time Weighting
Use the button to select FAST (125 ms) or SLOW (1 second) time weighting. The F or S icon
will appear in the display as selected.
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 FAST response for most applications.
Data Hold
To freeze a displayed reading, press the H button. The H icon will appear and the most recent
reading will appear in the display. Press the H button to exit the mode and return to normal
operation
Backlight
The LCD is equipped with backlighting for easier viewing, especially in dimly lit areas. Press the
backlight button to turn the backlight on. The backlight will automatically turn off after 10
seconds.
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PEAK HOLD
The Peak mode is used to capture and hold the peak sound level measurement.
1. Press the ▼ SET/PEAK button to enable the peak capture mode. The peak icon will
appear on the display.
2. The meter will now display the highest peak reading during the measurement period.
3. Press the ▼ SET/PEAK button to exit the peak capture mode
MAX-MIN Recording
In this mode, the meter records the maximum and minimum values over time.
Note: A/C, Fast/Slow, Hold and the Power buttons are not operational in the Record mode.
1. Short press the R button to enter the Record mode. The record icon will appear on the
display. The maximum and minimum values will be recorded and updated during the
measurement period.
2. Short press the R button to stop the Max-Min recording. The icon and the MAX value
that occurred during the recording period will be displayed.
3. Short press the R button to display the icon and the MIN value that occurred during the
recording measurement period.
4. Short press the H button to clear the memory and start a new max/min measurement
period.
5. Long press the R button to exit the record mode.
Auto Power OFF (APO)
In order to conserve battery life, the meter will automatically shut off after approximately 10
minutes of inactivity. The APO icon appears in the display when APO is selected.
To turn APO ON or OFF as the default condition:
1. Press and Hold the ▼ button for 2 seconds. The yes or no icon will appear:
2. Press the ▲ button to turn the APO ON (YES) or press the ▼ button to turn the APO OFF
(NO).
3. Press the R button to save the selection.
4. Short press the power button or wait approximately 10 seconds for the meter to return to
normal operation.
Note: APO is not operational in the Record mode.
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Calibration
To calibrate the SL510, an external calibrator that can provide a 94.0dB signal at 1 kHz is required.
1. Turn the meter ON
2. Put the meter in the ‘A’ weighting mode.
3. Put the meter in the ‘SLOW’ response mode.
4. Place the microphone into the calibrator. Set the calibrator to
output a 1kHz sine wave @ 94dB.
5. When the reading is stable, simultaneously press and hold the A/C
and Fast/Slow buttons until a second lower dB display appears.
6. Press the ▼ or ▲ buttons to adjust the upper display to match the
calibrator output (94.0dB).
7. Press the R button to save the calibration and return to normal operation.
Maintenance
WARNING: To avoid electrical shock, disconnect the meter from any circuit and turn OFF
the meter before opening the case. Do not operate with an open case.
Battery Replacement
1. Power OFF the meter.
2. Remove the flat head screw that secures the battery compartment at the back of the
meter.
3. Open the battery compartment and replace the 3 AAA batteries observing correct polarity.
Re-assemble the meter before use
Safety: Please dispose of batteries responsibly; never dispose of batteries in a fire, batteries may
explode or leak. If the meter is not to be used for 60 days or more, remove the battery and store
separately.
Cleaning and Storage
Periodically wipe the case with a damp cloth and mild detergent; do not use abrasives or
solvents.
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Specifications
Display Backlit LCD
Microphone 0.5” Electret condenser
Input Overload Display “----“
Measurement Range 35 to 130dB
Resolution 0.1dB
Frequency weighting ‘A’ and ‘C’ (selectable)
Accuracy / Resolution ± 1.0 dB @ 1kHz / 0.1dB
Frequency 31.5 to 8000 Hz
Response time Fast: 125 milliseconds / Slow: 1 second
Calibration source
required
Tripod mount On back of meter
Power 3 x 1.5V AAA batteries
Power Consumption Approx. 7.2mA DC
Automatic power off After approx. 10 minutes of inactivity
Operating temperature 32 to 122oF (0 to 50oC)
Operating humidity 10 to 80% RH
Storage temperature 14 to 140oF (-10 to 60oC)
Storage humidity 10 to 75% RH
Dimensions/weight 6.6 x 2.3 x 1.1”(167 x 57 x 25mm) /5.1oz (146g)
Meets IEC61672-1-2013 and ANSI/ASA S1.4/Part 1 standards for Response Time,
A & C Weighting, and Accuracy.
1KHz sine wave @ 94dB
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Typical A-Weighted Sound Levels
50HP Siren (100' )
130
120
110
100
90
80
70
60
50
40
30
20
10
140
0
Jet takeoff (200')
dBA
Riveting machine
Chain saw
Subway (20')
Boiler room
Pneumatic drill (50')
Freight train (100' )
Vacuum c leaner (10')
Speech (1')
Large st o re
Large Office
Small off ic e
Residence
Night res ident ial area
Whisper (5'0)
Sound studio
Threshold of hearing
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Warranty
FLIR Systems, Inc. warrants this Extech Instruments brand device to be free of defects in parts and workmanship for one year
from date of shipment (a six month limited warranty applies to sensors and cables). If it should become necessary to return the
instrument for service during or beyond the warranty period, contact the Customer Service Department for authorization. Visit
the website www.extech.com for contact information. A Return Authorization (RA) number must be issued before any product is
returned. The sender is responsible for shipping charges, freight, insurance and proper packaging to prevent damage in transit.
This warranty does not apply to defects resulting from action of the user such as misuse, improper wiring, operation outside of
specification, improper maintenance or repair, or unauthorized modification. FLIR Systems, Inc. specifically disclaims any implied
warranties or merchantability or fitness for a specific purpose and will not be liable for any direct, indirect, incidental or
consequential damages. FLIR’s total liability is limited to repair or replacement of the product. The warranty set forth above is
inclusive and no other warranty, whether written or oral, is expressed or implied.
Calibration, Repair, and Customer Care Services
FLIR Systems, Inc. offers repair and calibration services for the Extech Instruments products we
sell. We offer NIST traceable calibration for most of our products. Contact our Customer Service
Department for information on calibration service availability. Annual calibrations should be
performed to verify meter performance and accuracy. Technical support and general customer
service is also provided, refer to the contact information provided below.
Support Lines: U.S. (877) 239-8324; International: +1 (603) 324-7800
Technical Support: Option 3; E-mail: support@extech.com
Repair & Returns: Option 4; E-mail: repair@extech.com
Product specifications are subject to change without notice
Please visit our website for the most up-to-date information
www.extech.com
FLIR Commercial Systems, Inc., 9 Townsend West, Nashua, NH 03063 USA
ISO 9001 Certified
Copyright © 2017 FLIR Systems, Inc.
All rights reserved including the right of reproduction in whole or in part in any form
www.extech.com
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Garantie
FLIR Systems, Inc. garantit que cet appareil Extech Instruments est exempt de défauts matériaux et de fabrication pendant un
an à partir de la date d’envoi (une garantie limitée de six mois s’applique aux capteurs et aux câbles). Si le renvoi de l’appareil
pour réparation devient nécessaire durant ou après la période de garantie, contactez le service client pour autorisation. Pour
obtenir les coordonnées, visitez le site Web suivant : www.extech.com. Un numéro d’autorisation de retour (AR) doit être délivré
avant tout retour de produit. L’expéditeur prend à sa charge les frais d’expédition, le fret, l’assurance et l’emballage correct de
l’appareil afin de prévenir toute détérioration durant le transport. Cette garantie ne s’applique pas aux dommages imputables à
l’utilisateur, tels que l’usage impropre ou abusif, un mauvais câblage, une utilisation non conforme aux spécifications, un
entretien ou une réparation incorrecte, ou toute modification non autorisée. FLIR Systems, Inc. déclinera spécifiquement toute
garantie ou qualité marchande ou aptitude à l’emploi prévu, et ne sera en aucun cas tenu responsable pour tout dommage
conséquent, direct, indirect ou accidentel. La responsabilité totale de FLIR est limitée à la réparation ou au remplacement du
produit. La garantie définie ci-dessus est inclusive et aucune autre garantie, écrite ou orale, n’est exprimée ou implicite.
Calibrage, réparation et services après-vente
FLIR Systems, Inc. offre des services de calibrage et de réparation pour les produits Extech
Instruments que nous commercialisons. Nous offrons l’étalonnage traçable NIST pour la plupart de
nos produits. Contactez notre service clientèle pour obtenir des informations sur la disponibilité
des services d'étalonnage. Un calibrage doit être effectué chaque année pour vérifier les
performances et la précision du mètre. Nous offrons également une assistance technique et un
service à la clientèle. Veuillez vous reporter aux coordonnées fournies ci-dessous.
Lignes d’assistance: États-Unis (877) 239-8324; international: +1 (603) 324-7800
Service d’assistance technique : Option 3 ; E-mail : support@extech.com
Réparations et retours : Option 4 ; E-mail : repair@extech.com
Les spécifications produit sont sujettes à modifications sans préavis.
Pour les toutes dernières informations, veuillez visiter notre site Web.
www.extech.com
FLIR Commercial Systems, Inc., 9 Townsend West, Nashua, NH 03063 USA
Certifié ISO 9001
Copyright © 2017 FLIR Systems, Inc.
Tous droits réservés, y compris la reproduction partielle ou totale sous quelque forme que ce soit.
www.extech.com
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Garantía
FLIR Systems, Inc., garantiza este dispositivo marca Extech Instruments para estar libre de defectos en partes o mano de obra
durante un año a partir de la fecha de embarque (se aplica una garantía limitada de seis meses para cables y sensores). Si fuera
necesario regresar el instrumento para servicio durante o después del periodo de garantía, llame al Departamento de Servicio a
Clientes para obtener autorización. Visite www.extech.com para Información de contacto. Se debe expedir un número de
Autorización de Devolución (AD) antes de regresar cualquier producto. El remitente es responsable de los gastos de embarque,
flete, seguro y empaque apropiado para prevenir daños en tránsito. Esta garantía no se aplica a defectos resultantes de las
acciones del usuario como el mal uso, alambrado equivocado, operación fuera de las especificaciones, mantenimiento o
reparación inadecuada o modificación no autorizada. FLIR Systems, Inc., rechaza específicamente cualesquier garantías
implícitas o factibilidad de comercialización o idoneidad para cualquier propósito determinado y no será responsable por
cualesquier daños directos, indirectos, incidentales o consecuentes. La responsabilidad total de FLIR está limitada a la
reparación o reemplazo del producto. La garantía precedente es inclusiva y no hay otra garantía ya sea escrita u oral, expresa o
implícita.
Servicios de calibración, reparación y atención a clientes
FLIR Systems, Inc., ofrece servicios de reparación y calibración para los productos que vendemos
de Extech Instruments. Ofrecemos calibración rastreable a NIST para la mayoría de nuestros
productos, para información sobre la disponibilidad del servicio de calibración por favor llame a
nuestro Departamento de Servicio al Cliente.
Para verificar el funcionamiento y precisión se debe realizar la calibración anual. Además se provee
Soporte Técnico y servicios generales al cliente, consulte la información de contacto en seguida.
Líneas de soporte: EE.UU. (877) 239-8324; Internacional: +1 (603) 324-7800
Soporte Técnico Opción 3; correo electrónico: support@extech.com
Reparación / Devoluciones: Opción 4; correo electrónico: repair@extech.com
Las especificaciones del producto están sujetas a cambios sin aviso
Por favor visite nuestra página en Internet para la información más actualizada
www.extech.com
FLIR Commercial Systems, Inc., 9 Townsend West, Nashua, NH 03063 USA
Certificado ISO 9001
Copyright © 2017 FLIR Systems, Inc.
Reservados todos los derechos, incluyendo el derecho de reproducción total o parcial en cualquier medio
www.extech.com
SL510-en-US_V1.0 7/17
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