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 Manual de uso

Users Manual

AM-420

Digital 
Multimeter

Summary of Contents for AM-420

Page 1: ... Manual de uso Users Manual AM 420 Digital Multimeter ...

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Page 3: ...AM 420 Digital Multimeter Users Manual 11 2014 4266183 C 2014 Amprobe Test Tools All rights reserved Printed in China English ...

Page 4: ...iption of the problem or the service requested and include the test leads with the meter Non warranty repair or replacement charges should be remitted in the form of a check a money order credit card with expiration date or a purchase order made payable to Amprobe In warranty Repairs and Replacement All Countries Please read the warranty statement and check your battery before requesting repair Du...

Page 5: ...ASUREMENTS 4 Rotary Switch Positions 4 HOLD Button 5 Measuring AC Voltage 6 Measuring DC Voltage 6 Measuring DC Current 7 Measuring Resistance 7 Measuring Continuity 7 Measuring Diode 7 Battery Test 7 DETAILED SPECIFICATIONS 8 MAINTENANCE 9 TROUBLESHOOTING 9 BATTERY AND FUSE REPLACEMENT 10 ...

Page 6: ...2 AM 420 1 LCD display 2 Display HOLD button 3 Rotary switch 4 Test probe 5 Hazardous voltage 4 8 5 6 9 7 1 2 3 6 Display hold 7 Negative reading 8 Low battery indicator 9 Measurement reading ...

Page 7: ...ion including Amendment 1 or a later version of the same standard incorporating the same level of testing requirements Measurement Category II CAT II is for measurements performed on circuit directly connected to the low voltage installation Examples are measurements on house hold appliances portable tools and similar equipment CENELEC Directives The instruments conform to CENELEC Low voltage dire...

Page 8: ...ng and Inspection Your shipping carton should include 1 AM 420 Multimeter 1 9V alkaline battery installed 1 Users manual If any of the items are damaged or missing return the complete package to the place of purchase for an exchange FEATURES Residential digital multimeter to check for voltage in receptacles electrical circuits fuses light bulbs and electrical connections Measurements Voltage up to...

Page 9: ... DC For measurement of dry batteries of not exceeding 15 Vdc 1 5V V DC For measurement of dry batteries of not exceeding 2 Vdc G V DC Voltage measurement of diode PN junction Ω Continuity measurement buzzer will sound when 10 Ω HOLD Button Press HOLD button to freeze present reading on display Press again to resume normal operation X Warning To avoid electric shock do not use the HOLD mode to dete...

Page 10: ... than AC 250V and use proper range for measurement Over range indication 1 1 or a reading exceeds 250 Measuring DC Voltage X Do not apply on a voltage source higher than DC 250V and use proper range for measurement Over range indication 1 1 or a reading exceeds 250 ...

Page 11: ...ge for your measurement 3 Do not place the test probe in parallel with a circuit when the test leads are connected to the current terminals 4 Connect the test leads to the circuit before powering the circuit under test 5 After measurement switching OFF the circuit s power before removing test leads from the circuit Measuring Resistance X Disconnect circuit power and discharge all high voltage capa...

Page 12: ...circuit power and discharge all high voltage capacitors before testing diode Battery Test X Applying a voltage source or incorrect battery type under battery test may cause personal injury or damage to the Meter Battery 1 5V range is for dry battery not exceeding 2Vdc The resistance load is around 50Ω Battery 9V range is for dry battery not exceeding 15Vdc The resistance load is around 1 k ...

Page 13: ... field of 1V m Specified accuracy 5 RF field 1V m is not specified Power supply One 9V alkaline battery 6LF22 6LR61 MN1604 or equivalent Low battery indication N Dimensions L x W x H 115 x 65 x 40 mm 4 5 x 2 6 x 1 6 in Weight Approximately 275 g 0 61 lb with battery installed AC Voltage Measurement Range Resolution Accuracy 200 V 0 1 V 1 5 4 LSD 250 V 1 V 2 0 4 LSD Input impedance around 0 5 MΩ Fr...

Page 14: ...ange Resolution Accuracy 1 5V 0 001 V 8 0 1 LSD 9V 0 01 V For 1 5V range Load resistance is around 50Ω For 9V range Load resistance is around 1kΩ MAINTENANCE AND REPAIR If the Meter fails to operate check battery test leads etc and replace as necessary Double check the followings 1 Replace the fuse or battery if the meter doesn t work 2 Review the operating instructions for possible mistakes in op...

Page 15: ... 2 Turn the Meter to OFF position 3 Remove holster and the screws from the back cover and then open the back cover 4 Battery replacement Remove the battery and replace with one 9 V Alkaline battery 6LF22 6LR61 MN1604 or equivalent Pay attention to the polarity signs 5 Fuse replacement Replace the broken fuse F1 with rating 315 mA H 250 V fast fuse 5 20 mm 6 Put the back cover back re fasten the sc...

Page 16: ...m Everett WA 98203 Tel 877 AMPROBE 267 7623 Amprobe Europe Beha Amprobe In den Engematten 14 79286 Glottertal Germany Tel 49 0 7684 8009 0 Visit www Amprobe com for Catalog Application notes Product specifications User manuals Please Recycle ...

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