Manual - Northern Tool + Equipment
Contents
1. 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 2014 FLIR Systems Inc All rights reserved including the right of reproduction in whole or in part in any form www extech com 15 EX330 EN v5 0 06 14 Garantie FLIR Systems Inc garantit que cet appareil Extech Instruments est exempt de d fauts mat riaux et de fabrication pendant un an a 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 service2. 2 digits 400V 0 1V 600V 1V 1 5 reading 2 digits AC Voltage 400mV 0 1mV 1 0 reading 30 digits VAC AV 0 001V 50 60Hz 40V 0 01V 1 5 reading 3 digits 400V 0 1V 600V 1V 2 0 reading 4 digits DC Current 400A 0 11A 1 0 reading 3 digits ADC 40001A 11A 40mA 0 01mA 1 5 reading 3 digits 400mA 0 1mA 10A 0 01A 2 5 reading 5 digits AC Current 400A 0 11A 1 5 reading 5 digits AAC 40001A 11A 50 60Hz 40mA 0 01mA 1 8 reading 5 digits 400mA 0 1mA 10A 0 01A 3 0 reading 7 digits 12 EX330 EN v5 0 06 14 Resistance 4000 0 10 1 2 reading 4 digits 4kQ 10 40kQ 0 01kQ 1 2 reading 2 digits 400kQ 0 1kQ 4MQ 0 001MQ 40MQ 0 01MQ 2 0 reading 3 digits Capacitance 4nF 0 001nF 3 5 reading 40 digits 40nF 0 01nF 400nF 0 1nF 2 5 reading 4 digits 4uF 0 001 nF ae 3 5 reading 4 digits 40uF 0 01uF 200uF 0 1uF 3 5 reading 10 digits Frequency 5 000Hz 0 001Hz 50 00Hz 0 01Hz 500 0 Hz 0 1Hz 5 000kHz 0 001kHz 0 1 reading 1 digits 50 00kHz 0 01kHz 500 0kHz 0 001MHz 5 00MHz 0 01MHz 10 00MHz 0 01MHz Sensitivity 0 8V rms min 20 to 80 duty cycle and lt 100kHz 5Vrms min 20 to 80 duty cycle and gt 100kHz Duty Cycle 0 1 to 99 9 0 1 1 2 reading 2 digits For duty cycle the pulse width range is 100us 100ms Frequency 5Hz to 150kHz Temp typ
3. 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 O 2014 FLIR Systems Inc Reservados todos los derechos incluyendo el derecho de reproducci n total o parcial en cualquier medio www extech com 17 EX330 EN v5 0 06 14
4. The relative measurement feature allows you to make measurements relative to a stored reference value A reference voltage current etc can be stored so that subsequent measurements can be made in comparison to that value The displayed value is the difference between the reference value and the measured value 1 2 3 4 Perform the measurement as described in the operating instructions Press the REL button to store the reading the REL indicator will appear on the display The display will now indicate the difference between stored value and subsequent measurements Press the REL button to exit the relative mode Note The Relative mode is not available when measuring Frequency or Duty Cycle AUTO POWER OFF The meter will automatically turn off after 15 minutes of inactivity This will conserve battery energy To turn the meter on after an Auto Power OFF simply turn the rotary switch to OFF and then back to the desired setting Maintenance WARNING To avoid electric shock disconnect the test leads from any source of voltage before removing the back cover or the battery or fuse covers WARNING To avoid electric shock do not operate your meter until the battery and fuse covers are in place and fastened securely This MultiMeter is designed to provide years of dependable service if the following care instructions are performed 1 2 KEEP THE METER DRY If it gets wet dry it immediately USE AND STORE THE MET
5. 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 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 effect
6. 0 F 20 C to 60 C Operating Humidity lt 70 RH Storage Humidity lt 80 RH Operating Altitude 7000ft 2000meters maximum Weight 9 17 oz 260g includes holster Size 5 8 x 2 9 x 1 6 147 x 76 x 42mm includes holster Approvals UL CE Safety This meter is intended for indoor use and protected against the users by double insulation per EN61010 1 and IEC61010 1 2nd Edition 2001 to CAT Il 1000V amp CAT Ill 600V Pollution Degree 2 The meter also meets UL 61010 1 Second Edition 2004 CAN CSA C22 2 No 61010 1 Second Edition 2004 and UL 61010B 2 031 First Edition 2003 UL LISTED The UL mark does not indicate that this product has been evaluated for the accuracy of its readings PER IEC1010 OVERVOLTAGE INSTALLATION CATEGORY OVERVOLTAGE CATEGORY I Equipment of OVERVOLTAGE CATEGORY is equipment for connection to circuits in which measures are taken to limit the transient overvoltages to an appropriate low level Note Examples include protected electronic circuits OVERVOLTAGE CATEGORY II Equipment of OVERVOLTAGE CATEGORY ll is energy consuming equipment to be supplied from the fixed installation Note Examples include household office and laboratory appliances OVERVOLTAGE CATEGORY III Equipment of OVERVOLTAGE CATEGORY III is equipment in fixed installations Note Examples include switches in the fixed installation and some equipment for industrial use with permanent connection to the fixed
7. ER IN NORMAL TEMPERATURES Temperature extremes can shorten the life of the electronic parts and distort or melt plastic parts HANDLE THE METER GENTLY AND CAREFULLY Dropping it can damage the electronic parts or the case KEEP THE METER CLEAN Wipe the case occasionally with a damp cloth DO NOT use chemicals cleaning solvents or detergents USE ONLY FRESH BATTERIES OF THE RECOMMENDED SIZE AND TYPE Remove old or weak batteries so they do not leak and damage the unit IF THE METER IS TO BE STORED FOR A LONG PERIOD OF TIME the batteries should be removed to prevent damage to the unit 10 EX330 EN v5 0 06 14 BATTERY INSTALLATION and LOW BATTERY INDICATION WARNING To avoid electric shock disconnect the test leads from any source of voltage before removing the battery cover LOW BATTERY INDICATION The E icon will appear in the lower left hand corner of the display when the battery voltage becomes low Replace the batteries when this appears BATTERY REPLACEMENT 1 Disconnect the test leads from the meter Remove the protective rubber holster as shown in the diagram Remove the Phillips head screw located on the lower back of the instrument Flip up the fuse battery compartment cover to access the batteries Gently remove the batteries and install two new 1 5V AAA batteries observing polarity Secure the fuse battery compartment cover N D Gn e ooN Place the protective rubber holster on the meter WARNING To avoi
8. EXTECH User Guide INSTRUMENTS Mini Multimeter with Non Contact Voltage Detector NCV Model EX330 CE Introduction Congratulations on your purchase of the Extech EX330 Meter The EX330 offers AC DC Voltage AC DC Current Resistance Diode Continuity non contact Voltage Detection Capacitance Frequency Duty Cycle and Temperature Type K functions Proper use and care of this meter will provide many years of reliable service Safety This symbol adjacent to another symbol terminal or operating device indicates that the operator must refer to an explanation in the Operating Instructions to avoid personal injury or damage to the meter This WARNING symbol indicates a potentially hazardous situation which if not avoided could result in death or serious injury CAUTION This CAUTION symbol indicates a potentially hazardous situation which if not avoided may result damage to the product LP MAX This symbol advises the user that the terminal s so marked must not be 600V connected to a circuit point at which the voltage with respect to earth ground exceeds 600V This symbol adjacent to one or more terminals identifies them as being associated with ranges that may in normal use be subjected to particularly hazardous voltages For maximum safety the meter and its test leads should not be handled when these terminals are energized This symbol indicates that a device is protected throughout by double i
9. acitors before taking any resistance measurements Remove the batteries and unplug the line cords Set the function switch to the Q position Insert the black test lead banana plug into the negative COM jack Insert the red test lead banana plug into the positive Q jack Use the MODE button to view the Q icon on the display Touch the test probe tips across the circuit or component under test It is best to disconnect one side of the circuit under test so the rest of the circuit will not interfere with the resistance reading Read the resistance in the display 7 EX330 EN v5 0 06 14 CONTINUITY CHECK WARNING To avoid electric shock never measure continuity on circuits or wires that have voltage on them Set the function switch to the gt position Insert the black lead banana plug into the negative COM jack Insert the red test lead banana plug into the positive Q jack Use the MODE button to view the icon on the display Touch the test probe tips to the circuit or wire you wish to check If the resistance is less than approximately 1000 the audible signal will sound If the circuit is open bad the display will indicate OL E Gn Ns DIODE TEST 1 Set the function switch to the gt position 2 Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive Mack 3 Use the MODE button to view the icon on the display 4 Touc
10. d electric shock do not operate the meter until the batteries and the fuses are in place and fastened securely Removable Rubber Holster Meter Battery Fuses Compartment Cover Rubber Holster O0 R O N EE 11 EX330 EN v5 0 06 14 REPLACING THE FUSES WARNING To avoid electric shock disconnect the test leads from any source of voltage before removing the fuse cover om ork ONS Disconnect the test leads from the meter 10A 250V fast blow for the A range 7 Secure the fuse battery compartment cover 8 Place the protective rubber holster on the meter Specifications Remove the protective rubber holster as shown in the diagram Remove the Phillips head screw located on the lower back of the instrument Flip up the fuse battery compartment cover to access the fuses Gently remove the fuse s and install new fuse s into the holder s Always use fuses of the proper size and value 500mA 250V fast blow for the mA yA ranges Function Range Resolution Accuracy Non contact AC Voltage detector 100 to 600VAC Resolution amp accuracy do not apply since the meter does not display the voltage in this mode The lamp at the top of the meter s display flashes when voltage is sensed DC Voltage 400mV 0 1mV 0 5 reading 2 digits V DC 4V 0 001V 40V 0 01V 1 0 reading
11. e K 4 to 1382 F 19 20 to 750 C 1 C 3 0 reading 8 digits probe accuracy not included NOTES Accuracy specifications consist of two elements e reading This is the accuracy of the measurement circuit e digits This is the accuracy of the analog to digital converter Accuracy is stated at 65 F to 83 F 18 C to 28 C and less than 75 RH UL LISTED The UL mark does not indicate that this product has been evaluated for the accuracy of its readings EX330 EN v5 0 06 14 General Specifications Diode Test Test current 0 3mA max Open circuit voltage 1 5V DC typ Continuity Check Audible signal will sound if the resistance is less than 1000 Temperature Sensor Requires type K thermocouple Input Impedance 10MQ VDC amp VAC AC Bandwidth 50 60Hz Display 4000 count 0 to 3999 digits LCD Overrange indication For all functions OL is displayed Note For ACV measurements only an audible beep will also sound Auto Power Off After 15 minutes approximately of inactivity Polarity No indication for positive Minus sign for negative Measurement Rate 2 times per second nominal Low Battery Indication g is displayed if battery voltage is critically low Battery Two 2 1 5V AAA batteries Fuses mA pA ranges 500mA 250V fast blow A range 10A 250V fast blow Operating Temperature 32 F to 122 F 0 C to 50 C Storage Temperature 4 F to 14
12. gh voltage circuits both AC and DC are very dangerous and should be measured with great care 1 ALWAYS turn the function switch to the OFF position when the meter is not in use 2 Press the HOLD button to freeze a displayed reading NOTE On some low AC and DC voltage ranges with the test leads not connected to a device the display may show a random changing reading This is normal and is caused by the high input sensitivity The reading will stabilize and give a proper measurement when connected to a circuit NON CONTACT AC VOLTAGE DETECTOR The EX330 can detect the presence of AC voltage from 100 to 600VAC simply by being held very near to a voltage source WARNING Test the AC voltage detector on a known live circuit before each use WARNING Before using the meter in the AC Voltage Detector mode verify that the battery is fresh by confirming characters appear on the LCD when the function dial is turned to any position Do not attempt to use the meter as an AC Voltage Detector if the battery is weak or bad The NCV function works on any rotary switch position 1 Test the detector on a known live circuit before use 2 Press and hold the NCV button for the duration of the test The meter will beep once when the button is pushed 3 Hold the top of the meter very close to the voltage source as shown 4 If voltage is present the rim of the LCD display will flash a bright orange and an audible war
13. h the test probes to the diode under test Forward voltage will typically indicate 0 400 to 0 700V Reverse voltage will indicate OL Shorted devices will indicate near OV and an open device will indicate OL in both polarities CAPACITANCE MEASUREMENTS WARNING To avoid electric shock disconnect power to the unit under test and discharge all capacitors before taking any capacitance measurements Remove the batteries and unplug the line cords 1 Set the rotary function switch to the CAP position Insert the black test lead banana plug into the negative COM jack Insert the red test lead banana plug into the positive CAP jack Use the MODE button to view the unit of measurement Touch the test leads to the capacitor to be tested The test may take up to 3 minutes or more for large capacitors to charge Wait until the readings settle before ending the test 7 Read the capacitance value in the display Oahwon 8 EX330 EN v5 0 06 14 FREQUENCY MEASUREMENTS 1 DUTY CYCLE 1 2 3 4 5 CONTACT TEMPERATURE MEASUREMENTS 1 2 4 Note The temperature range of the supplied thermocouple probe is 20 to 250 C 4 to 482 F Use the MODE button to view the Hz unit of measure on the LCD display Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive Hz jack Touch the test probe tips to the circuit under test Read the frequenc
14. installation OVERVOLTAGE CATEGORY IV Equipment of OVERVOLTAGE CATEGORY IV is for use at the origin of the installation Note Examples include electricity meters and primary over current protection equipment 14 EX330 EN v5 0 06 14 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
15. l 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 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
16. mage shock injury or death Read and understand this user manual before operating the meter e Always remove the test leads before replacing the battery or fuses e Inspect the condition of the test leads and the meter itself for any damage before operating the meter e Use great care when making measurements if the voltages are greater than 25VAC rms or 35VDC These voltages are considered a shock hazard e Warning This is a class A equipment This equipment can cause interferences in the living quarters in this case the operator can be required to carry out adequate measures e Always discharge capacitors and remove power from the device under test before performing Diode Resistance or Continuity tests e Voltage checks on electrical outlets can be difficult and misleading because of the uncertainty of connection to the recessed electrical contacts Other means should be used to ensure that the terminals are not live e If the equipment is used in a manner not specified by the manufacturer the protection provided by the equipment may be impaired e This device is not a toy and must not reach children s hands It contains hazardous objects as well as small parts that the children could swallow In case a child swallows any of them please contact a physician immediately e Do not leave batteries and packing material lying around unattended they can be dangerous for children if they use them as toys e Incase the device is goi
17. ng to be unused for an extended period of time remove the batteries to prevent them from training e Expired or damaged batteries can cause cauterization on contact with the skin Always therefore use suitable hand gloves in such cases e See that the batteries are not short circuited Do not throw batteries into the fire 3 EX330 EN v5 0 06 14 Controls and Jacks AC Voltage Detector Sensor AC Voltage Detector indicator light LCD 2 RELATIVE push button MODE button 3 Non contact AC Voltage Detector test button Rotary function dial 10 ampere test lead jack COM test lead jack 0 Test lead jack for voltage milli amp micro amp resistance capacitance frequency and temperature functions 11 RANGE button 12 HOLD button 13 Protective rubber holster must be removed to access the rear battery compartment 8 O 00 Or Bro N our Display Symbols and Annunciators n nano 10 capacitance y micro 10 amps cap m milli 10 volts amps A Amps k kilo 10 ohms F Farads capacitance M mega 10 ohms Q Ohms Hz Hertz frequency V Volts Percent duty ratio REL Relative AC Alternating current AUTO Autoranging DC Direct current HOLD Display hold F Degrees Fahrenheit C Degrees Centigrade Continuity Pt Diode test AUTO AD REL gt 9 Battery status LJ DC AC aL 4 EX330 EN v5 0 06 14 Operating Instructions WARNING Risk of electrocution Hi
18. ning will sound 5 EX330 EN v5 0 06 14 AC VOLTAGE MEASUREMENTS WARNING Risk of Electrocution The probe tips may not be long enough to contact the live parts inside some 240V outlets for appliances because the contacts are recessed deep in the outlets As a result the reading may show 0 volts when the outlet actually has voltage on it Make sure the probe tips are touching the metal contacts inside the outlet before assuming that no voltage is present CAUTION Do not measure AC voltages if a motor on the circuit is being switched ON or OFF Large voltage surges may occur that can damage the meter k Set the function switch to the VAC position Insert the black test lead banana plug into the negative COM jack Insert red test lead banana plug into the positive V jack Touch the black test probe tip to the neutral side of the circuit Touch the red test probe tip to the hot side of circuit Read the voltage in the display If the measured AC voltage exceeds the highest range of the meter refer to the specification table an audible tone will sound N OF On 200 DC VOLTAGE MEASUREMENTS CAUTION Do not measure DC voltages if a motor on the circuit is being switched ON or OFF Large voltage surges may occur that can damage the meter 1 Set the function switch to the VDC position 2 Insert the black test lead banana plug into the negative COM jack Insert the red test lead banana plug int
19. nsulation or E reinforced insulation SAFETY INSTRUCTIONS This meter has been designed for safe use but must be operated with caution The rules listed below must be carefully followed for safe operation 1 NEVER apply voltage or current to the meter that exceeds the specified maximum Input Protection Limits Function Maximum Input V DC or VAC 600V AC and DC mA AC DC 500mA DC AC AAC DC 10A DC AC for 30 seconds max every 15 minutes Frequency Resistance Capacitance Duty 250V DC AC Cycle Diode Test Continuity Temperature 250V DC AC 2 USE EXTREME CAUTION when working with high voltages 3 DO NOT measure voltage if the voltage on the COM input jack exceeds 600V above earth ground 4 NEVER connect the meter leads across a voltage source while the function switch is in the current resistance or diode mode Doing so can damage the meter 5 ALWAYS discharge filter capacitors in power supplies and disconnect the power when making resistance or diode tests 6 ALWAYS turn off power and disconnect test leads before opening the covers to replace the fuse or battery 7 NEVER operate the meter unless the back cover and the battery and fuse covers are in place and fastened securely 8 Ifthe equipment is used in a manner not specified by the manufacturer the protection provided by the equipment may be impaired 2 EX330 EN v5 0 06 14 CAUTIONS e Improper use of this meter can cause da
20. o the positive V jack 3 Touch the black test probe tip to the negative side of the circuit Touch the red test probe tip to the positive side of the circuit 4 Read the voltage in the display 6 EX330 EN v5 0 06 14 AC DC CURRENT MEASUREMENTS CAUTION Do not make current measurements at 10 Amps for longer than 30 seconds Exceeding 30 seconds may cause damage to the meter and or the test leads 1 2 Insert the black test lead banana plug into the negative COM jack For current measurements up to 4000pA set the function switch to the pA position and insert the red test lead banana plug into the mA uA jack For current measurements up to 400mA set the function switch to the mA position and insert the red test lead banana plug into the mA pA jack For current measurements up to 10A set the function switch to the 10A range and insert the red test lead banana plug into the 10A jack Use the MODE button to select AC or DC current The display will reflect the selection Remove power from the circuit under test then open up the circuit at the point where you wish to measure current Touch the black test probe tip to the negative side of the circuit Touch the red test probe tip to the positive side of the circuit Apply power to the circuit Read the current in the display RESISTANCE MEASUREMENTS WARNING To avoid electric shock disconnect power to the unit under test and discharge all cap
21. u 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 O 2014 FLIR Systems Inc Tous droits r serv s y compris la reproduction partielle ou totale sous quelque forme que ce soit www extech com 16 EX330 EN v5 0 06 14 Garant a 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 E
22. y on the display Set the rotary function switch to the Hz position Use the MODE button to view the unit of measure on the LCD display Insert the black lead banana plug into the negative COM jack and the red test lead banana plug into the positive Hz jack Touch the test probe tips to the circuit under test Read the duty cycle on the display Set the function switch to the F or C position Insert the Temperature Probe into the input jacks making sure to observe polarity The probe can be pressed against a device under test to read its temperature or the probe can be held in air to read the ambient temperature Allow 30 seconds for the display to stabilize Read the temperature in the display AUTO MANUAL RANGE SELECTION When the meter is first turned on it automatically goes into the Auto Range mode This automatically selects the best range for the measurements being made and is generally the best mode for most measurements For measurement situations requiring that a range be manually selected perform the following 1 2 3 Press the RANGE key The AUTO display indicator will turn off Press RANGE to step through the available ranges until the desired range is selected To exit the Manual Ranging mode and return to Auto Range press and hold the RANGE key for 2 seconds Note Manual range does not apply to Capacitance Frequency or Temperature modes 9 EX330 EN v5 0 06 14 RELATIVE MODE
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