USER GUIDE White LED Light Meter Model LT40
Contents
1. 15 20 500 75 50 75 200 750 20 75 Medical Exam Room 750 1 500 1 500 3 000 150 300 Electronic Assembly Drafting 1 000 2 000 100 20 75 150 Show Window Packing Table 1 500 3 000 150 300 Storefront Show Window 5 000 10 000 500 1000 750 1 500 75 150 Operating Room e H 0 L L 100 200 10 20 Corridor Stairs 150 300 15 30 Entrance ERBEN il NN 0 0 i Spectral Sensitivity Peak sensitivity wavelength 550nm Deviation from comparative standards for luminosity JIS standard C1609 1993 120 Q 100 E 80 2 o 60 T 7 40 gt E 20 lt LU 0 380 430 480 530 580 630 680 730 780 WAVELENGTH nm 8 LT40 EN v1 3 9 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 user2. 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 especificaciones 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 2013 FLIR Systems Inc Reservados todos los derechos incluyendo el derecho de reproducci n total o parcial en cualquier medio www extech com 11 LT40 EN v1 3 9 13
3. e Data hold freezes displayed reading e Maximum Average Minimum Memory Hold e Zero adjustment e Auto power off with disable function e Autorange Safety e Do not operate the meter in environments where the following are present explosive gases or materials combustible gases or materials steam or dust e Please replace the battery immediately when the symbol EI appears on the LCD e Do not touch the meter s circuit board for any reason as static electricity or contamination could damage the sensitive components e For Indoor use only This instrument was designed for pollution degree 2 e Operation Altitude Up to 2000m 7000 2 LT40 EN v1 3 9 13 Meter Description 1 2 Photo detector remove protective cover to expose sensor Display LCD Control push buttons Power Button ON OFF Battery compartment and tripod mount are located on rear of instrument Push Button Description Lux Fc units selector Calibration and ZERO button Maximum Average Minimum memory button Data hold button LED Light Meter 140 Y LUX CAL ZERO MIN HOLD ood OO iN LT40 EN v1 3 9 13 Operation Power ON OFF Press and hold the Power button for at least 2 seconds and then release to power the meter To power the meter OFF momentarily press the Power button Taking Measurements 1 Switch the meter ON and remove the sensor s protective cover to expose the light sensor dome The d
4. EXTECH USER GUIDE INSTRUMENTS White LED Light Meter Model LT40 LED Light Meter LT40 CE Introduction Congratulations on your purchase of the Extech LT40 LED Light Meter that measures light from white LED light fluorescent metal halide high pressure sodium and incandescent sources The LT40 can measure light up to 400 000 Lux 40 000 Fc The LT40 offers an overload indication low battery indication Data hold maximum average minimum hold MAX MIN Zero adjustment auto power off with disable function and auto ranging features This instrument 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 of this User Guide Product Updates and Customer Support Features Overload Indication LCD screen will show OL at the upper left hand corner e Low battery Indication E e Display Update Rate 2 5 times per second e Spectral response near CIE luminous spectral efficiency ratings e Cosine Angle corrected e Conforms to JIS C 1609 1993 and CNS 5119 general class A Specifications e Measures LED white light and all visible light e Measures the intensity of illumination in Lux or foot candles e Applications include Warehouses factories office buildings restaurants schools library hospitals photo video parking garages museums art galleries stadiums building security
5. e 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 client 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 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 10 LT40 EN v1 3 9 13 Garantia FLIR Systems Inc garantiza este dispositivo marca Extech Instruments para es
6. e top of the LCD window indicating that the meter is now showing the maximum reading The reading will not change until a higher reading is registered 2 Press the MAX MIN button again to switch from MAX to AVG where the meter will show the average measurement value The AVG icon will be displayed above the displayed value 3 Press the MAX MIN button again to change the mode from AVG to MIN where the meter will show the minimum value measured The MIN icon will be displayed Press the MAX MIN button again to switch from MIN back to MAX 5 To exit this mode hold the MAX MIN button for at least 2 seconds The MAX AVG MIN icons should all be switched OFF when the unit returns to the normal operating mode Data Hold Button Press the HOLD button to freezes the current reading on the LCD Press the HOLD button again to release the reading CALIBRATION and ZERO Buttons 1000 LUX Calibration 1 Prepare a 2856 K 1000 Lux light source and face the meter s sensor perpendicularly toward the light source 2 Simultaneously press and hold both the CAL ZERO button and the power button for at least 2 seconds 3 Release the buttons when CAL is displayed on the LCD screen 4 Press and hold the CAL button for 2 more seconds and the LT40 will power down 5 The meter is now calibrated ZERO Calibration 1 Ensure that the protective cover is attached to the light sensor 2 Power the meter and the LCD shou
7. ems Inc All rights reserved including the right of reproduction in whole or in part in any form www extech com 9 LT40 EN v1 3 9 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 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 fini
8. er OFF Dimensions Weight 2 5 times per second digital display Silicon photo diode with spectral response filter and cosine correction Temperature 41 to 104 F 5 to 40 C Humidity lt 80 RH Temperature 14 to 140 F 10 to 60 C Humidity lt 70 RH Y appears on the LCD when battery voltage falls critically low White LED light can be accurately measured 2 x 1 5V AAA batteries Approximately 200 hours Meter switches OFF after 12 minutes of inactivity 5 2 x 1 9 x 1 133 x 48 x 23 mm 8 8 oz 250g including batteries 7 LT40 EN v1 3 9 13 Appendices 20 75 2 L Foot Candles 2075 27 Emergency Stairs Warehouse Foot Candles 75 150 7 15 Exit Entrance Passages 150 200 15 20 Recreational Activities Home 100 150 Typical Light Levels 1 Fc 10 76 Lux u 75 100 Indoor Emergency Stairs 75 150 150 300 15 30 Packing Work 200 300 20 30 Table X A 7 300 75 30 75 Visual Work Production Line 300 500 30 50 750 1 501 75 150 _ Typesetting Inspection Work 500 1 500 50 150 Reading Study E 0 0 0 000 200 750 20 75 Conference 300 750 30 75 Cooking Room Reception Room Dining Table 750 1 50 75 15 Clerical Work 750 1 500 75 150 Show Window 1 500 2 000 150 2000 Typing Drafting ee ee EPA 75 150 30 75 Emergency Stairs 150 200 15 20 Corridor Stairs 75 100 200 300 20 30 Reception 100 150 10 15 Sick Room Warehouse 10 0 10 300 50 30 50 Display Stand 150 200
9. isplay should switch ON if not check that batteries are installed and fresh 2 The meter measures the intensity of the light illuminance that strikes the sensor dome in foot candles and lux units 1 fc 10 76 lux displaying this measured value on its LCD 3 Position the meter and light source so that the light strikes the sensor dome straight on perpendicular with as little an angle as possible 4 The meter s display can show a value up to 3999 However for readings that represent measurements higher than this the meter uses x10 feature right most decimal point flashing For example to represent a measurement of 39 999 the meter will display 3999 with the right most digit flashing Auto Power OFF To save battery life the meter powers down automatically after approximately 12 minutes of inactivity Enable Disable Auto Power Off While the meter is ON press and hold the Power button for at least 2 seconds and then release to disable the Auto Power OFF utility the Clock symbol will switch OFF To enable the Auto Power OFF utility repeat this process LUX FC Button Press the LUX FC button to toggle between Lux and FC foot candles measurement units 4 LT40 EN v1 3 9 13 MAX MIN Button The meter can record the maximum minimum and average readings as described below 1 Momentarily press the MAX MIN button and the meter will begin to track the maximum average minimum measurements the MAX icon will display at th
10. ld display 0 3 Momenarily press the ZERO button for the zero adjustment and the CAL icon will switch ON The CAL icon will switch OFF when the calibration has been completed 5 Ifthe protective cap is not covering the sensor when the ZEO calibration is started the LCD display will read CAP In this case please cover the sensor with the cap and restart this procedure 5 LT40 EN v1 3 9 13 Measurement Considerations and User Tips e For maximum accuracy allow the light being measured to fall directly on the sensor as perpendicular as possible with a minimal angle of incidence Light Source 0 degree Zs E e When the meter is not in use please keep the protective cap in place over the light sensor This will prolong the life of the sensor e When the meter is to be stored for long periods please remove the batteries and store them separately Batteries can leak and cause damage to the meter s components e Avoid areas of high temperature and humidity when using this instrument Battery Replacement and Maintenance Cleaning and storage 1 The white plastic sensor dome should be cleaned with a damp cloth when necessary Use only a mild soap if needed Do not use solvents abrasives or harsh detergents to clean the dome 2 Store the meter in an area with moderate temperature and relative humidity Battery Replacement When the battery power decreases to a critical level the low battery symbol E will appear on
11. 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 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 2013 FLIR Syst
12. tar libre de defectos en partes o mano de obra durante un a o a partir de la fecha de embarque se aplica una garantia 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 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 espec ficamente 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
13. the LCD Replace the 2 x 1 5V AAA batteries located in the rear battery compartment The battery compartment slides easily downward for removal Ensure that the compartment cover is securely fastened before using the meter Battery Safety Reminders o Please dispose of batteries responsibly observe local state national regulations o Never dispose of batteries in a fire batteries may explode or leak o Never mix battery types install new batteries of the same type 6 LT40 EN v1 3 9 13 Specifications Display 4 digit LCD maximum display 3999 with low battery icon measurement overload and other function indicators Sensor detector Silicon photodiode with spectral response filter and cosine correction Ranges and Resolution Lux 399 9 3999 39 999 399 999 Foot candles 39 99 399 9 3999 39 999 Readings above 3999 use a x10 or x100 multiplier 1 Fc 10 76 Lux Auto Range The meter automatically ranges the display Accuracy 3 of reading 3 digits up to 500 Lux 3 above 500 Lux Calibrated to standard incandescent lamp 2856 K at an ambient temperature of 73 F 23 C 8 for other visible light sources Angle deviation from cosine characteristics 30 2 60 6 80 25 General Specifications Sampling rate Photo detector Operating conditions Storage conditions Low battery indication LED Type Power supply Battery life Auto Pow
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