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ohmmeter

[ohm-mee-ter] /ˈoʊmˌmi tər/
noun, Electricity
1.
an instrument for measuring electric resistance in ohms.
Origin
1895-1900
1895-1900; ohm + -meter
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for ohmmeter
  • Change the circuit and use the multimeter as voltmeter, ammeter, or ohmmeter.
  • If the special silver chloride battery in the blaster's ohmmeter is depleted it must be replaced with an identical battery.
  • Test bolted connections for high resistance using low-resistance ohmmeter.
  • Measure contact resistance when closed with an ohmmeter.
  • In the resistivity method, measurements are taken on an ohmmeter, which indicate the resistivity of the subsurface.
  • Use low resistance ohmmeter, or check tightness of bolted bus joints by calibrated torque wrench method.
  • Using an ohmmeter instead of a simple conductivity meter can enhance the lab.
  • Test continuity between access locations by use of a temporary wire connecting test points in-line with an ohmmeter.
  • Use an electronic multimeter set on the high range of the ohmmeter function.
  • Furthermore, a short across this contact would exist undetected unless it was specifically tested with an ohmmeter.
British Dictionary definitions for ohmmeter

ohmmeter

/ˈəʊmˌmiːtə/
noun
1.
an instrument for measuring electrical resistance
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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ohmmeter in Science
ohmmeter
  (ōm'mē'tər)   
An instrument used for direct measurement of the electrical resistance of a material or electronic component, usually in ohms. Ohmmeters typically use an ammeter to measure current through the material after it has been given some set voltage by the ohmmeter; the direct-current resistance of the sample can then be directly determined through Ohm's law. Compare voltmeter.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for ohmmeter

instrument for measuring electrical resistance, which is expressed in ohms. In the simplest ohmmeters, the resistance to be measured may be connected to the instrument in parallel or in series. If in parallel (parallel ohmmeter), the instrument will draw more current as resistance increases. If in series (series ohmmeter), current will decrease as resistance rises. Ratio meters measure the ratio of the voltage across the resistance to the current flowing through it. For high resistances, the scale is usually graduated in megohms (106 ohms), and the instrument is called a megohmmeter, or "megger."

Learn more about ohmmeter with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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