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User's Guide
Precision Milliohm Meters
Models 380460 and 380462
Introduction
Congratulations on your purchase of the Extech Milliohm Meter Model 380460 (110V) or
Model 380462 (220V). The milliohm meters are enclosed in rugged carrying cases for
durability. Measurements are made with Kelvin test leads (supplied) for optimal accuracy
in five (5) selectable ranges. Careful use of this meter will provide years of reliable
service.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
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Summary of Contents for Extech Instruments 380460
- Page 1 Models 380460 and 380462 Introduction Congratulations on your purchase of the Extech Milliohm Meter Model 380460 (110V) or Model 380462 (220V). The milliohm meters are enclosed in rugged carrying cases for durability. Measurements are made with Kelvin test leads (supplied) for optimal accuracy in five (5) selectable ranges.
- Page 2 10mΩ 200 Ω 0.1 Ω ± 0.75% + 2 digits 3.2V 2000 Ω 1 Ω ± 0.75% + 2 digits 3.2V Note: Specifications tested using RF Field Strength <3V/m and frequency <30MHz Model 380460 and 380462 Version 2.1 March 2005...
- Page 3 Once the test current is applied to the device under test, clip leads Rx1 & Rx2 measure the voltage drop across the device under test. The following equations detail how the meter accomplishes its measurement tasks. To Meter White bands Device under test Model 380460 and 380462 Version 2.1 March 2005...
- Page 4 International Symbols Powering the Meter Connect the meter to the correct power source (110 or 220VAC); the Model 380460 uses 110VAC and the Model 380462 uses 220VAC (note that these meters are NOT interchangeable). Do not apply voltage to the meter input measurement terminals. Meter damage may result.
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