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 102 results

Handheld Milliohm Meter (Four Terminal Measurement)

SKU: GT00YP00ZZ
This Handheld AC Milliohm Meter with Four Terminal Measurement is designed as low-resistance meter and a voltmeter with a wide resistance measurement range from 0.01mΩ to 2kΩ and is suitable for assembly line tests for all kinds of batteries

Micro Ohmmeter With Temperature Compensation (SCPI)

SKU: GT00YL00ZZ
This Micro Ohm Meter with built-in temperature compensation is used to test super low or low resistance and has accuracy of 0.1 % with measurement range 0.1 uΩ to 1.2 GΩ

Milliohm Meter with Data Hold (Battery Identity Test)

SKU: GT00YP00ZY
This Milliohm with Data hold battery tester analyzes the degradation of the battery by testing the internal resistance and voltage ranging from 0.1 mΩ to 200 Ω, 0 - 50 V DC voltage.

Ohmmeter with Keypad Lock (Auto Power-Off)

SKU: GT00YP00ZX
This portable Ohmmeter with Keypad Lock (Auto Power-Off) function accurately measures electrical resistance between two points in a circuit by adopting a high-performance 32dgt ARM micro-processor

Milliohm Meter With SCPI Command (Keypad Lock)

SKU: GT00YM00ZZ
This high-performance Handheld Milliohm Ohmmeter with SCPI Command (Keypad Lock) provides accurate and convenient measurements of passive components for a wide measurement range from 10 μΩ to 20 MΩ

GAOTek Milliohm Meter With Auto Shutdown (Internal, Manual Trigger)

SKU: GT00YM00ZY
This Handheld Milliohm Meter with Auto shutdown adopts high-performance 32-bit ARM processor which works with high accuracy for a wide measurement range from 10 uΏ to 20 MΏ.

Megohmmeter with Data Storage (Auto Voltage Release)

SKU: GT00Y700ZZ
This Megohmmeter with Auto Voltage Release measures insulation resistance and displays automatic release of voltage and comes with 18 groups of data storage capacity.

Micro ohmmeter with data hold (Remote trigger)

SKU: GT00YL00ZY
This Micro Ohmmeter with data hold and remote trigger is designed to measure high, medium and low value resistances for a wide measuring range from  0.001 mΩ ~ 20.100 MΩ

GAOTek Portable DC Milliohm Resistance Meter Test Instruments At518L

SKU: GAOTek-MTI-110
GAOTek handheld DC milliohm meter is a high-performance instrument that utilizes a 32-bit ARM processor to ensure accurate and reliable measurements.

GAOTek Handheld Electromagnetic Radiation Detector

SKU: GAOTek-RMD -109
GAOTek Handheld Digital electromagnetic radiation detector is a field-portable unit that measures DC magnetic fields with direct digital readout in mT or G.

GAOTek Micro Ohmmeter With 250 A Loop Resistance

SKU: GAO-EOM-111
This Micro Ohmmeter offers portable high current output, simple UI, Bluetooth interfaces with wide temperature range and user-replaceable battery.

GAOTek Ohmmeter TTR Tester Portable

SKU: GAO-EOM-112
This TTR Tester has fast 3-phase test, high/low voltage protection, 7-inch touch screen, external printer connection, and portable design

GAOTek Ohmmeter High Voltage

SKU: GAO-EOM-113
This High Voltage Ohmmeter offers adjustable voltage output, load capacity, data storage, comprehensive protection, and resistance to interference.

GAOTek Micro Ohmmeter DC Digital Bridge

SKU: GAO-EOM-114
This DC Digital Ohmmeter offers various test currents, broad measurement range, high accuracy, data storage, suitable for diverse applications.

GAOTek Micro Ohmmeter Transformer DC Winding Resistance

SKU: GAO-EOM-115
This Transformer Micro Ohmmeter has fast measurement, “four-terminal” method, ample data storage, LCD display, suitable for transformer testing.

GAOTek Ohmmeter Insulation Resistance

SKU: GAO-EOM-116
This Ohmmeter offers measures insulation resistance with capacitance function, short-circuit protection, battery-powered, dual display.

GAOTek Micro Ohmmeter Contact Resistance

SKU: GAO-EOM-117
This Contact Resistance Ohmmeter offers high resolution, high-precision current, integrated design, 500 data memory, thermal printer, U disk storage.

GAOTek Micro Ohmmeter Contact Resistance

SKU: GAO-EOM-118
This Micro Ohmmeter has short-circuited current, anti-interference performance, quick capacitive discharge, user-friendly interface.

GAOTek Insulation Tester Ohmmeter

SKU: GAO-EOM-119
This Tester Ohmmeter offers dual AC/DC testing, synchronized dual display, real-time software, high-pressure prompt sound, compact design.

GAOTek Micro Ohmmeter Intelligent

SKU: GAO-EOM-120
This Ohmmeter has Linear and rotary sensors, easy installation with large LCD screen. Multiple on-site point storage and built-in fast printer.

GAOTek Ohmmeter Electric High Voltage Insulation Resistance

SKU: GAO-EOM-121
This Ohmmeter offers insulation resistance, adjustable short circuit current, automatic polarization index, cable test without manual discharge.

GAOTek Digital LCR Meter Handheld Frequency Inductance Resistance Capacitance Tester Multimeter Ohmmeter

SKU: GAOTek-LCR-148
GAOTek Digital LCR Meter Handheld Frequency Inductance Resistance Capacitance Tester Multimeter Ohmmeter features powerful functions, high accuracy, fast speed, and long standby time.

GAOTek Micro Ohm Meter

SKU: GAOTek-OHM-126
This Micro Ohm Meter has DC resistance measurement parameter, 0.1 μ ohm to 3.3 M ohm measurement range, and AC 100 V to 256 V power supply.

GAOTek Ohm Megger Meter

SKU: GAOTek-OHM-135
GAOTek ohm megger meter has the functions of gray and white backlight LCD large screen display, data storage, data query, alarm, automatic shutdown and so on.

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.