User's Manual Digital Sound Level Meter Model 407768
Contents
1. 6mADC approx Operating temperature 32 to 122 F 0 to 50 C Operating humidity Less than 80 RH Dimensions Weight 10 6 x 2 7 x 1 1 0 63 Ibs 268 x 68 x 29mm 285g Meter Description 1 Microphone LCD Display AC output jack Power Hold and Min Max buttons Max Weighting Response Time amp Range buttons Calibration potentiometer RS 232 PC interface jack on oOo 2 NN Battery compartment tilt stand and tripod mount on rear 2 407768 EN V4 1 8 13 Sound Level Meter Operation Meter Power 1 The meter is powered by a 9V battery The battery compartment is located on the rear of the meter and the compartment cover is secured by one Phillips screw When the battery icon appears on the top left corner of the meter s display replace the battery 2 Press the POWER button to turn the meter on Note that the Meter is equipped with an Auto Power Off feature that shuts the meter off after 10 minutes To defeat Auto Power Off put the meter in Record mode by pressing the REC MAX MIN button 3 Press the POWER button to turn the meter off Default Configuration 1 The meter s default configuration is as follows Auto Range A Frequency Weighting and FAST Response Time 2 The lower portion of the LCD will reflect the meter s configuration i e A Fast Auto Measurement Considerations Use a windscreen not included to cover the microphone in windy2. The AC analog output transmits 0 5V AC rms full scale The output impedance is 600Q maximum The mono 3 5mm mini jack is located in the output calibration compartment on the right side of the instrument Use a phono plug 3 5mm mono to connect to the output jack PC Interface The optically isolated RS 232 PC Interface port is located in the output calibration compartment situated on the lower right side of the meter The supplied Data Acquisition Software package includes Windows 95 98 NT 2000 XP compatible software and a meter to PC interface cable Instructions for use can be found on the included software CD Important Note on the Automatic Power OFF feature The 407768 Sound Level Meter has an AUTO POWER OFF feature that turns the meter off after approximately 10 minutes This feature must be disabled before starting a datalogging session to avoid having the meter automatically shut off in the middle of a session Disable it by pressing the REC MAX MIN button to activate the Record mode While the meter is in the Record mode the AUTO POWER OFF feature is disabled Battery Replacement The 9V battery that powers the Sound Level Meter is housed in the rear battery compartment When the battery icon appears on the top left corner of the meter s LCD it is time to replace the battery 1 Open the battery compartment by first removing the Phillips screw and then sliding the compartment cover down and off 2 Replace the 9V b
3. certification for most products is also provided Call the Customer Service Department for information on calibration services available for this product 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 877 439 8324 International 1 603 324 7800 Technical Support Option 3 E mail support extech com Repair amp 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 O 2013 FLIR Systems Inc All rights reserved including the right of reproduction in whole or in part in any form www extech com 6 407768 EN V4 1 8 13 Garantie FLIR Systems Inc garantit que cet appareil Extech Instruments est exempt de d fauts mat riaux et de fabrication pendant un an partir de la date d envoi une garantie limit e de six mois s applique aux capteurs et aux c bles Si le renvoi de l appareil pour r paration devient n cessaire durant ou apr s la p riode de garantie contactez le service client pour autorisation Pour obtenir les coordonn es visitez le site Web suivant www extech com Un num ro d autorisation de retour AR doit tre d
4. User s Manual EXTECH INSTRUMENTS Digital Sound Level Meter Model 407768 407768 art AUTO Introduction Congratulations on your purchase of the Extech 407768 Sound Level Meter This Auto Range Sound Level Meter meets ANSI and IEC Type ll accuracy standards Professional features include programmable Frequency Weighting and Time Response Min Max Memory Max Hold Analog output and RS 232 PC Interface This meter is shipped fully tested and calibrated and with proper use will provide years of reliable service Specifications Display 5 Digit LCD with overload low battery and multifunction indication Frequency bandwidth 31 5 Hz to 8 KHz Microphone 0 5 Electret Condensor Microphone Output terminals Optically isolated RS 232 port and AC output Measurement ranges Auto Range 30 to 130dB Manual Ranges 30 to 80dB 50 to 100dB 80 to 130dB Frequency weighting A and C Programmable Applicable standards ANSI 1 4 1983 Type 2 IEC 61672 Class 2 Resolution 0 1dB Maximum Minimum record Highest and lowest readings are stored for later recall Data Hold Displayed reading is held when HOLD key is pressed Max Hold Highest reading displayed only Response time Fast 125ms Slow 1s Programmable AC Analog output 0 5VAC rms full scale 600Q output impedance Power 9V Battery Consumption
5. attery slide the cover on and replace the screw 5 407768 EN V4 1 8 13 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 NIST
6. ciones del producto est n sujetas a cambios sin aviso Por favor visite nuestra p gina en Internet para la informaci n m s actualizada www extech com FLIR Commercial Systems Inc 9 Townsend West Nashua NH 03063 USA Certificado ISO 9001 Copyright O 2013 FLIR Systems Inc Reservados todos los derechos incluyendo el derecho de reproducci n total o parcial en cualquier medio www extech com 8 407768 EN V4 1 8 13 Appendix Typical A Weighted dB levels 140 50 HP Siren 100 130 Jet take off 200 120 Riveting machine 110 100 Chain saw Subway 20 90 Boiler room Pneumatic drill 50 80 Freight train 100 Vacuum cleaner 10 70 Speech 1 Large store 60 Large Office Small office 50 Residence Residential area 40 night 30 Whisper 5 Ba Sound studio 10 Threshold of hearing 0 Frequency Weighting Graph Frequency Weighting Hon 10 a ar A Weighting ee C Weighting 30 35 40 45 dB relative 10 100 1000 10000 Frequency Hz 9 407768 EN V4 1 8 13
7. 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 QUE SINS Avoid severe vibration when using the meter 6 Remove the battery when the meter will be stored for long periods of time Frequency Weighting Change the Frequency Weighting by pressing the A C button The A or C icon will display on the lower left hand area of the LCD Note With A weighting selected the meter responds like the human ear boosting and cutting the noise amplitude over the frequency spectrum see Appendix A weighting is used for environmental measurements OSHA regulatory testing law enforcement and workplace design Select C weighting for flat response measurements no boost or cut C weighting is suitable for the sound level analysis of machines engines etc Most OSHA related testing is performed using A Weighting and SLOW Response Time settings Response Time Change the Response Time by pressing the FAST SLOW button The FAST or SLOW icon will display on the lower left hand area of the LCD Note Select FAST to capture noise peaks and noises that occur very quickly Select the SLOW Mode to monitor a sound source that has a reasonably consistent noise level or to average quickly changing levels Selection of Fast or Slow is determined by the application a
8. defectos resultantes de las acciones del usuario como el mal uso alambrado equivocado operaci n fuera de las especificaciones mantenimiento o reparaci n inadecuada o modificaci n no autorizada FLIR Systems Inc rechaza especificamente cualesquier garant as impl citas o factibilidad de comercializaci n o idoneidad para cualquier prop sito determinado y no ser responsable por cualesquier da os directos indirectos incidentales o consecuentes La responsabilidad total de FLIR est limitada a la reparaci n o reemplazo del producto La garant a precedente es inclusiva y no hay otra garant a ya sea escrita u oral expresa o impl cita Servicios de calibraci n reparaci n y atenci n a clientes FLIR Systems Inc ofrece servicios de reparaci n y calibraci n para los productos que vendemos de Extech Instruments Adem s ofrecemos certificaci n NIST para la mayor a de los productos Llame al Departamento de Servicio al Cliente para solicitar informaci n de calibraci n para este producto Para verificar el funcionamiento y precisi n se debe realizar la calibraci n anual Adem s se provee Soporte T cnico y servicios generales al cliente consulte la informaci n de contacto en seguida L neas de soporte EE UU 877 439 8324 Internacional 1 603 324 7800 Soporte T cnico Opci n 3 correo electr nico support extech com Reparaci n Devoluciones Opci n 4 correo electr nico repair extech com Las especifica
9. e HOLD icon will extinguish 3 Note that Data Hold is not available while the meter is in the Max Min Record mode Max Hold 1 Press the MAX HOLD button to activate this feature The LCD will display PH when Max Hold is engaged 2 The meter will now display only the highest reading Each time a higher reading is encountered the display will update 3 Press the MAX HOLD button again to de activate this feature The PH icon will extinguish 4 Note that Max Hold is not available while the meter is in the Max Min Record mode Max Min Data Recording The Max Min feature stores the maximum reading and minimum reading while the user takes measurements The Max and the Min readings can later be recalled 1 Press the REC MAX MIN button to activate this feature The LCD will display the icon REC and the meter will begin monitoring the highest Max and lowest Min readings 2 After measurements are made press the REC button again to view the Max reading The MAX icon will appear on the LCD along with the highest reading 3 Press the REC to view the minimum MIN reading The MIN display icon will appear on the LCD along with the lowest reading To exit this mode press and hold the REC button until the REC indicator extinguishes To clear a Max or Min reading press the HOLD key while viewing either the MAX or MIN value Note that exiting the Record mode also clears the MAX and MIN values 4 407768 EN V4 1 8 13 Analog Output
10. livr avant tout retour de produit L exp diteur prend sa charge les frais d exp dition le fret l assurance et l emballage correct de l appareil afin de pr venir toute d t rioration durant le transport Cette garantie ne s applique pas aux dommages imputables l utilisateur tels que l usage impropre ou abusif un mauvais c blage une utilisation non conforme aux sp cifications un entretien ou une r paration incorrecte ou toute modification non autoris e FLIR Systems Inc d clinera sp cifiquement toute garantie ou qualit marchande ou aptitude l emploi pr vu et ne sera en aucun cas tenu responsable pour tout dommage cons quent direct indirect ou accidentel La responsabilit totale de FLIR est limit e la r paration ou au remplacement du produit La garantie d finie ci dessus est inclusive et aucune autre garantie crite ou orale n est exprim e ou implicite Calibrage r paration et services apr s vente FLIR Systems Inc offre des services de calibrage et de r paration pour les produits Extech Instruments que nous commercialisons Nous fournissons galement une certification NIST pour la plupart des produits Contactez notre service client pour toute information sur les services de calibrage disponibles pour ce produit Un calibrage doit tre effectu chaque ann e pour v rifier les performances et la pr cision du m tre Nous offrons galement une assistance technique et un service la clie
11. nd any directives or standards related to that application Auto Manual Range Press the RANGE button to scroll through the following ranges Auto 30 80dB 50 100dB and 80 130dB The display will reflect the range for each button press 3 407768 EN V4 1 8 13 Calibration The Sound Level meter should be calibrated before each use an external sound level meter calibrator is required Set the meter to the Manual range 50 100dB FAST response and A weighting before starting 1 Place the external calibrator over the Sound Level Meter s microphone and turn the Calibrator on 2 The meter should read close to or exactly the calibrator s dB output level Typical Calibrator output levels are 94dB and 114dB If the meter is within 0 2 dB of the calibrator s output no adjustment is necessary Adjust the calibration pot in the output calibration compartment if necessary to bring the meter display in line with the calibrator output signal Taking Measurements 1 Hold the meter in hand place it on a desktop using the rear tilt stand or mount it on a tripod using the tripod mount on the rear of the meter 2 Point the microphone toward the source of noise sound to be measured 3 Read the measurement in dB units on the LCD display Data Hold 1 Press the HOLD button to freeze the displayed reading The LCD will display the icon HOLD when Data Hold is engaged 2 Press the HOLD button to de activate this feature Th
12. nt le Veuillez vous reporter aux coordonn es fournies ci dessous Lignes d assistance tats Unis 877 439 8324 international 1 603 324 7800 Service d assistance technique Option 3 E mail support extech com R parations et retours Option 4 E mail repair extech com Les sp cifications produit sont sujettes modifications sans pr avis Pour les toutes derni res informations veuillez visiter notre site Web www extech com FLIR Commercial Systems Inc 9 Townsend West Nashua NH 03063 USA Certifi ISO 9001 Copyright O 2013 FLIR Systems Inc Tous droits r serv s y compris la reproduction partielle ou totale sous quelque forme que ce soit www extech com it 407768 EN V4 1 8 13 Garantia FLIR Systems Inc garantiza este dispositivo marca Extech Instruments para estar libre de defectos en partes o mano de obra durante un a o a partir de la fecha de embarque se aplica una garant a limitada de seis meses para cables y sensores Si fuera necesario regresar el instrumento para servicio durante o despu s del periodo de garant a llame al Departamento de Servicio a Clientes para obtener autorizaci n Visite www extech com para Informaci n de contacto Se debe expedir un n mero de Autorizaci n de Devoluci n AD antes de regresar cualquier producto El remitente es responsable de los gastos de embarque flete seguro y empaque apropiado para prevenir da os en tr nsito Esta garant a no se aplica a
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