Electrical Ohmmeters

GAO’s electrical ohmmeters are devices used to measure electrical resistance. Resistance is the opposition that a material offers to the flow of electric current, and is measured in units called ohms. GAO Tek’s ohmmeters work by passing a small current through the circuit or component being tested and measuring the voltage drop across it. By knowing the current being passed and the voltage drop, our electrical ohmmeter can calculate the resistance of the component using Ohm’s law (R=V/I).

GAO’s electrical ohmmeters are composed of power source, measuring instrument (usually a galvanometer), and resistor.

The alternative names of ohmmeters include resistance meters, impedance testers, resistance measuring devices, ohm gauges, electrical resistance meters, impedance meters, ohmic instruments, resistor testers, conductor resistance meters, electrical impedance meters, ohmic testers, conductance meters, resistance measurement tools, electric resistance gauges, impedance analyzers, ohm detectors, conductivity meters, resistance testing equipment, impedance checking devices, and ohm readers. 

Showing 1–24 of 72 results

GAOTek Loop Resistance Meter

SKU: GAOTek- OHM-186
This Loop Resistance Meter has temperature range of  14°F to 122°F, resolution of 0.1 µΩ, humidity range of ≤85% RH, and operating power of AC 220 V.
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GAOTek Resistance Battery Tester

SKU: GAOTek- OHM-185
This Resistance Battery Tester has a working temperature of 14°F to 104°F, resistance resolution of 1 uΩ, and voltage resolution of 1 mV.
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GAOTek OHM Resistance Tester

SKU: GAOTek- OHM-184
This Ohm Resistance Tester has a working temperature of 14° F to 104° F, resistance resolution of 0.0001 Ω, and AC voltage resolution of 0.1 V.
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GAOTek Resistance Meter

SKU: GAOTek- OHM-183
This Resistance Meter has an operating temperature of −4 °F to 104 °F, measuring range of 20 A, testing voltage of 750 V, and resolution of 0.001.
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GAOTek Insulation Resistance Earth Meter

SKU: GAOTek- OHM-182
This Insulation Resistance Earth Meter has an operating temperature of 14°F to 122°F, resolution of 0.001, and DC voltage of 0.0 V to 1000 V.
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GAOTek Digital Resistance Meter

SKU: GAOTek- OHM-181
digital resistance meter is designed for a wide range of applications involving resistance measurements.
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GAOTek Mega Ohm Meter

SKU: GAOTek- OHM-180
This Mega Ohm Meter has a measuring range of 0.1 M Ω to 400 GΩ, operating temperature of 14° F to 104° F, and current test range of 10 mA.
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GAOTek Portable OHM

SKU: GAOTek- OHM-179
This portable ohm meter has temperature of 32 °F to 122 °F, voltage of maximum 5 V, testing time of 10 s, and measuring range of 100 A 0 µΩ to 2000 µΩ.
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GAOTek Micro Ohm Meter

SKU: GAOTek- OHM-178
GAOTek’s micro-ohmmeters, offer various features, including the capability to measure both steady state and dynamic low resistance values
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GAOTek Insulation Resistance

SKU: GAOTek- OHM-177
This Insulation Resistance Meter has temperature measurement of −49 °F to 257°F, testing voltage of 2.5 KV, and current test range of 10 mA.
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GAOTek Micro OHM Meter

SKU: GAOTek- OHM-196
This Micro Ohm Meter has temperature of 14°F to 122°F, current measurement of 100 A, operating power of AC 220 V ± 10 %, and power supply of 1000 W.
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GAOTek Digital Micro OHM meter

SKU: GAOTek- OHM-195
This Digital Micro Ohm Meter has temperature of 32 °F to 158 °F, accuracy class of 0.1 %, and testing voltage of 198 V DC to 240 V DC.
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GAOTek Ohmmeter Resistance Tester

SKU: GAOTek-OHM-194
GAOTek ohmmeter resistance tester are high precision and high stability DC resistance meters that adopt high-performance 32dgt ARM microprocessor control.
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GAOTek Portable Micro Ohm Meter

SKU: GAOTek-OHM-193
This enterprise portable micro ohm meter has temperature of 14°F to 104°F, measuring range of 1 μ Ω to 1999 μ Ω, and resolution of 1 μ Ω.
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GAOTek Digital Loop Resistance Meter

SKU: GAOTek-OHM-192
 GAOTek digital loop resistance meter adopts the new technology of the power supply, which can continuously output large current for a long time.
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GAOTek Digital Micro Ohmmeter

SKU: GAOTek- OHM-191
GAOTek digital micro ohmmeter. This instrument is indeed versatile, capable of measuring a wide range of resistances in various applications.
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GAOTek High Voltage Megohmmeters

SKU: GAOTek- OHM-190
This High Voltage megohmmeters has temperature of −4°F to 104°F, short circuit current of 10 mA, and measurement range of 2 MΩ to 2000 MΩ.
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GAOTek DC Digital Resistance Meter

SKU: GAOTek- OHM-189
GAOTek DC digital resistance meter is suitable for measuring various high, medium, and low-value resistors, as well as different types of resistances such as switch contact resistance, connector contact resistance, relay wire coil and contact resistance, transformer, inductor, motor, deflection coil winding resistance, solder joint contact resistance, wire wrapping resistance, metal riveting resistance of cars, ships, and airplanes, printed pattern lines and hole resistance, and metal defect detection.
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GAOTek Micro OHM Meter

SKU: GAOTek- OHM-188
This Micro Ohm Meter has temperature of 32 °F to 122 °F, output current of 100 A, measuring range of 100 A 0 µΩ, and test range of 0.1 u Ω to 2 m Ω.
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GAOTek High Precision OHM Meter

SKU: GAOTek-OHM-187
This High Precision Ohm Meter has temperature of 14 °F to 211.82 °F, test current of 1 A to 1 μ A, and measurement range of 0.01 μ Ω to 1200 MΩ.
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GAOTek Ohmmmeter

SKU: GAOTek-OHM-185
GAOTek ohmmeters are a full-featured, 199999 counting 5½ digits desk type true RMS digital multimeter with stable performance.
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GAOTek Four Wire Ohmmeter

SKU: GAOTek-OHM-184
GAOTek four wire ohmmeters are used to measure DC low resistance through a 4-wire method.
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GAOTek Low Resistance Ohmmeter

SKU: GAOTek-OHM-183
This low resistance ohmmeter has operating temperature of 32 °F to 104 °F, measuring capacitance range of 60 μF, and display count of 60000.
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GAOTek Resistance Tester Ohmmeter

SKU: GAOTek-OHM-182
This resistance tester ohmmeter has an operating temperature of 14 °F to 211.82 °F, and accuracy class of 0.05%, 1 A maximum test current.
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GAO Tek’s electrical ohmmeters have the following functions:

  • Testing Resistance - GAO's ohmmeters are used to test the resistance of resistors, capacitors, and coils. By measuring the resistance of these components, technicians can determine if they are functioning properly or if they need to be replaced.
  • Continuity Testing - Our ohmmeters can also be used to test for continuity in a circuit. Continuity is the ability of an electrical circuit to allow current to flow from one end to the other without interruption. By measuring the resistance of a circuit with an ohmmeter, technicians can determine if the circuit is continuous or if there is a break in the circuit.
  • Troubleshooting - GAO Tek’s ohmmeters can be used to troubleshoot electrical circuits and components. By measuring the resistance of various parts of a circuit, technicians can isolate and identify faulty components that may be causing problems.
  • Quality Control - Our ohmmeters are also used in quality control processes to ensure that electrical components meet certain specifications and standards.

GAO Tek’s electrical ohmmeters are rugged, versatile and precision measurement instruments. They comply with applicable industry standards such as ANSI/IEEE C57.13.1, NFPA 70E, ASTM D257 and MIL-PRF-55342.

Our electrical ohmmeters help our customers comply with relevant U.S. government regulations such as:

  • Occupational Safety and Health Administration (OSHA) regulations
  • National Institute of Standards and Technology (NIST) regulations
  • Federal Communications Commission (FCC) regulations
  • Consumer Product Safety Commission (CPSC) regulations

Our electrical ohmmeters help our clients in complying with relevant Canadian government regulations such as:

  • Canadian Electrical Code (CEC)
  • Measurement Canada
  • Industry Canada
  • Canadian Environmental Protection Act (CEPA)

Our electrical ohmmeters have the following applications:

  • Testing electrical circuits - GAO Tek’s ohmmeters are used to test the continuity of electrical circuits and to identify faults or breaks in wiring.
  • Checking the resistance of components - GAO’s ohmmeters can be used to measure the resistance of individual components such as resistors, capacitors, and inductors.
  • Testing the insulation of cables and wires - Our ohmmeters can be used to test the insulation resistance of cables and wires to identify potential faults or breaks in the insulation.
  • Quality control testing - GAO Tek’s ohmmeters are used in quality control testing to ensure that electronic components and devices meet certain resistance specifications.
  • Laboratory research - Our ohmmeters are used in laboratory research to measure electrical resistance in a variety of materials and to investigate the properties of conductive and non-conductive materials.
  • Industrial manufacturing - GAO's ohmmeters are used in industrial manufacturing to ensure that electrical components and systems meet certain resistance specifications and quality standards.

Our electrical ohmmeters can be shipped overnight within the continental U.S. and Canada, and can be shipped globally.