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Model EX330 - Version 4.0 – 05/06 

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Support line (781) 890-7440 

Technical support: Extension 200; E-mail: [email protected] 

Repair & Returns: Extension 210; E-mail: [email protected] 

Product specifications subject to change without notice

For the latest version of this User’s Guide, Software updates, and other 

up-to-the-minute product information, visit our website: www.extech.com

 

Extech Instruments Corporation, 285 Bear Hill Rd., Waltham, MA 02451 

Warranty 

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and 
workmanship for one year from date of shipment (a six month limited warranty applies on 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 at (781) 890-7440 ext. 210 for authorization or visit our 
website at www.extech.com. A Return Authorization (RA) number must be issued before any product is 
returned to Extech. 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. Extech 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. 
Extech'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 and Repair Services 

Extech offers complete repair and calibration services for most of the products we sell. For 
periodic calibration, NIST certification or repair for most Extech products, call customer 
service for details. Extech recommends that calibration be performed on an annual basis to 
ensure calibration integrity. 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Copyright 

©

 2005 Extech Instruments Corporation. 

All rights reserved including the right of reproduction in whole or in part in any form. 

 
 
 
 

 

 

 

Summary of Contents for EX330

Page 1: ...User s Guide Mini Multimeter with Non Contact Voltage Detector NCV Model EX330...

Page 2: ...nals are energized This symbol indicates that a device is protected throughout by double insulation or reinforced insulation SAFETY INSTRUCTIONS This meter has been designed for safe use but must be o...

Page 3: ...equency and temperature functions 11 RANGE button 12 HOLD button 13 Protective rubber holster must be removed to access the rear battery compartment Display Symbols and Annunciators Continuity Diode t...

Page 4: ...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 A...

Page 5: ...the negative COM jack Insert red test lead banana plug into the positive V jack 3 Touch the black test probe tip to the neutral side of the circuit 4 Touch the red test probe tip to the hot side of c...

Page 6: ...to 400mA set the function switch to the mA position and insert the red test lead banana plug into the mA A jack 4 For current measurements up to 10A set the function switch to the 10A range and inser...

Page 7: ...sconnect one side of the circuit under test so the rest of the circuit will not interfere with the resistance reading 4 Read the resistance in the display CONTINUITY CHECK WARNING To avoid electric sh...

Page 8: ...jack and the red test lead banana plug into the positive jack 3 Use the MODE button to view the icon on the display 4 Touch the test probes to the diode under test Forward voltage will typically indi...

Page 9: ...2 Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive Hz jack 3 Touch the test probe tips to the circuit under test 4 Read the frequen...

Page 10: ...EL indicator will appear on the display 3 The display will now indicate the difference between stored value and subsequent measurements 4 Press the REL button to exit the relative mode Note The Relati...

Page 11: ...mpartment cover 7 Place the protective rubber holster on the meter WARNING To avoid electric shock do not operate the meter until the batteries and the fuses are in place and fastened securely 1 Remov...

Page 12: ...has been evaluated for the accuracy of its readings 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...

Page 13: ...gits 4V 0 001mV 40V 0 01V 400V 0 1V 1 5 reading 3 digits AC Voltage V AC 50 60Hz 600V 1V 2 0 reading 4 digits 400 A 0 1 A 1 0 reading 3 digits 4000 A 1 A 40mA 0 01mA 400mA 0 1mA 1 5 reading 3 digits D...

Page 14: ...e and 100kHz 0 1 to 99 9 0 1 1 2 reading 2 digits Duty Cycle For duty cycle the pulse width range is 100 s 100ms Frequency 5Hz to 150kHz 4 to 1382 F 1 F Temp type K 20 to 750 C 1 C 3 0 reading 8 digit...

Page 15: ...or indoor use and protected against the users by double insulation per EN61010 1 and IEC61010 1 2nd Edition 2001 to CAT II 1000V CAT III 600V Pollution Degree 2 The meter also meets UL 61010 1 Second...

Page 16: ...e 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 misus...

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