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Ohmmeters
measure the electrical resistance of a conductor.
See Also: Micro Ohmmeters, Teraohm Meters, Megohmmeters, Microhmmeters
- Valhalla Scientific Inc.
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Rugged Igniter Tester
4314 KV
Model 4314 KV is a 4-wire ohmmeter designed to use low test currents for its measurement. Additional circuitry proprietary to Valhalla Scientific is used to ensure that test current levels do not exceed the specified “fail-safe current” even in a worst-case component failure situation.
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Compliance Voltage Ohmmeter
ΩhmRanger-LCV
ΩhmRanger-LCV is an accurate, 3.5 Digit, Low Compliance Voltage Ohmmeter. It is able to measure from >100M to 10 Ohms, ΩhmRanger-LCV is suitable for professionals and enthusiasts alike.
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Low Resistance Ohm Meters
DMO-100D
For fast and accurate measurements of low resistanceon Switch Contacts, SF-6 Switch Gear, Bushbars, Splices, Joints, Fuses, Breaker Contacts, and Rail Bonds. • 100A DC continuous current in 4 ranges of 10A, 20A, 50A and 100A
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Igniter Testers
Igniter Tester is a failsafe and portable digital ohmmeter specifically designed for ultra-safe resistance testing on squibs, flares, bridge-wire, and other explosive devices. The 620A-4 ohmmeter has been approved by the USAF Non-Nuclear Munitions Safety Board for usage on all non-nuclear munitions, and independently certified to meet Mil. Std. 810 Mtd. 511 for usage in fuel-filled environments. Due to its intense self-safety design and numerous certifications, the 620A-4 failsafe ohmmeter is the industry standard for military programs in need of igniter testing.
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Micro - Ohmmeter / Milli - Ohmmeter
Basic Accuracy 0.25%Max. Test Current : 5A (120mV) for 7002Max. Test Current : 10A (60mV) for 7272Manual or Auto RangeFour Terminal Kelvin Measurement6 Ranges with 1mV Best ResolutionMeasurement of Resistive and Inductive MaterialsSetting for HI, LO & PASS ReadingsMemory of 3000 Measurements DataProgrammable HI-LO Alarm with memory of 20 DataLarge LCD with Backlight & HOLD FunctionLow Power ConsumptionBattery Operated with AC AdaptorLow Battery (Voltage) AlarmLED indication for Invalid Resistance MeasurementCable Length Measurement in feet & metersUser Interface Software for PC Communication via RS232C(to USB Bridge) cableBuilt-inBatery Chaging Circuit & Calender Clock
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Digital Igniter Tester
Alpha 4314
The Alpha 4314 Digital Igniter Tester is a portable digital ohmmeter which has been specifically designed for ultra-safe resistance testing on explosive devices (i.e. squibs, detonators).
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Transformer Winding Resistance Meters
RMO TT Series
The Tap Changer Analyzer & Winding Ohmmeter of the RMO-TT series is designed for winding resistance measurement of inductive objects, and for a tap changer analysis. The RMO-TT series is based on the state of the art technology, using the most advanced switch mode technology available today. The RMO-TT instruments are accurate (0,1%), powerful (up to 100 A) and still portable. The Instruments generate a true DC ripple free current with automatically regulated measurement and discharging circuit. RMO-TT instruments can perform a simple, quick and reliable transformer on-load tap changer condition assessment. This series of instruments enable measurements of a winding resistance in every tap position, current ripple values (percentage of a current drop during a tap change) and transition times during the tap changes. Problems with a connection, contacts, and selector/diverter switch operation (tap change with interruption) can be detected with these measurements.
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Tap Changer Analyzers & Winding Ohmmeters
Winding resistance test of inductive test objects, such as power transformers, is one of the most effective non-intrusive ways of checking its condition. Due to their advanced design, DV Power winding resistance meters provide high test currents (up to 100 A DC) and high accuracy (up to 0.1%) within light and portable test instruments. In addition to winding resistance measurement, it is also possible to perform simple, quick and reliable transformer on-load tap changer condition assessment by recording the test current during tap changer operation, also known as DVtest. Because of that, problems with a tap changer connection, contacts, and switching procedure can be detected.DV Power winding ohmmeters consist of single-phase RMO-T and three-phase TWA series. Models from the TWA series are designed for six-winding resistance measurement of power and distribution transformers, with only one single-step cable setup. As a result of reducing the total test time, it enables significant saving of time and money.Typical application areas of these instruments are high-voltage substations and industrial environments. They are intended to measure the resistance of:Transformer windingsOn-load tap changersGeneratorsElectrical motorsHigh-current bus bar jointsCable splicesWelding joints
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Bonding Ohmeters
bonding ohmmeter is an affordable, highly accurate, and intrinsically safe electrical bond tester. This meter is capable of performing bond measurements on a variety of components and metal-to-metal connections. The 620LK has been independently UL-913 certified, ensuring quality and safety at each step of manufacturing. Due to its safety certifications and high level of accuracy, the 620LK meter is the choice bond tester for many commercial airliners, while its sibling the 620UK-B is in countless USAF programs.
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Micro Ohmmeter
HTHL-100A / 380
Wuhan Huatian Electric Power Automation Co., Ltd.
Special instrument for circuit resistance measurement.
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Antenna, Loop
EM-6871 | 30 Hz – 1 MHz
The EM-6871 Antenna can be used with any 50 ohm /Receiver/Field Strength Meter to obtain magnetic field measurements from 30 Hz to 1 MHz.
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Low Resistance Ohm Meter
6237 DLRO
Standard Electric Works Co., Ltd
● Microprocessor-controlled.● Measure down to 1μΩ.● 6 ranges from 2.000mΩ to 200.0Ω.● Maximum resolution of 1μΩ.● Three test currents with over-temperature protection.● Four terminal measurement.● Protection against inadvertent connection to over- voltage. (crow bars for current and voltage)● Clear & large LCD.● Potential lead resistance and current lead resistance checks.● "Full-featured” EnerSave™ Inside.● EnerSave™ Auto-hold.● EnerSave™ Auto-off.● Rechargeable battery operated● Robust & compact.● Indicators show if reading may be invalid (RP, RC, and temperature).● "O-Ring” sealed case.
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Motor/Generator Test Equipment
Winding ohmmeters RMO-M series measure winding resistance of inductive test objects such as electrical motors and generators. Motor test or generator test of winding resistance is especially important for early-stage failure detection.RMO-M series instruments generate true DC ripple-free current with automatically regulated measurement and discharge process. Even more, test instruments are portable and enclosed in a metal casing.Applications supported by DV Power motor/generator test equipment include:Winding resistance measurement of generators and electrical motorsResistance measurement of high-current bus bar jointsResistance measurement of cable splicesAll of the above-mentioned measurements are performed with the highest accuracy. The advanced DV-Win PC software enables collecting both numerical and graphical results. These features provide an easier and more efficient analysis. After the test, a DV-Win software generates a test report a single click. Finally, a user can easily customize the report and save it in different formats, such as XLS and PDF.
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Autocompute LCR-Q Meter
Model 4910
Aplab Model 4910 is a microprocessor based digital Autocompute LCR-Q Meter that meets today’s laboratory requirements, in the production line and the quality assurance area. It features fully autoranging and automatic operation over a wide range of measurements. Model 4910 measures inductance, capacitance, resistance and quality factor to a basic accuracy of ±0.25% of the reading for values upto 2000H, 2000μF, 2M ohm and Q factor upto 99 respectively. Measurements can be made at a frequency of 100Hz or 1KHz as required and either the series equivalent or parallel equivalent component values can be displayed.
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High Resistance Meter
HR2
The Model HR2 meter measures resistance in nine ranges from 1 ohm to 1.9999 Tera ohms (1.9999x1012 ohms), and conductance in a single range of 0.00 to 199.99 pS (pico siemens, or pico mhos), all at low voltage of < 2 volts across the sample. Basic accuracy is +/- 2% of reading +/- 1 count. For resistance higher than 1.9999 Tera ohms, the conductance range can be used to measure conductance down to 0.01 pS (100 T ohms). The meter has a conductance range because samples with simultaneously high resistance and high capacitance settle faster to their final value on conductance (usually under one second), than on resistance (several seconds), and conductance is also capable of detecting higher resistance than the resistance ranges can. Note that resistance in units of T ohms is the inverse of conductance in pS, so that the resistance can be calculated from the conductance. For example, 100 pS is 0.01 T ohm (10 G ohm), and the highest readable conductance of 199.99 pS is essentially 5 G ohms.
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AS5653 Compliant Small Form Pluggable (SFP) Transceiver
XCVR-AS5653
Avionics Interface Technologies
AS5653 SFP transceiver that can be inserted into any standard SFP slot - 1.0625 GBPS communication signals interface using TNC connectors - Bulkhead mountable female TNC connector at the end of a 1 meter length of RG179B/U - 100 feet of RG179 operates to better than 10E‐13 Bit Error Rate - Available for 75 Ohm single ended copper or 150 Ohm Differential
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Single-Phase Transformer Winding Resistance Meters
RMO-TW Series
RMO-TW series is perfect for winding resistance measurements of inductive objects. It is ideal for testing transformer windings (power transformers, distribution, autotransformers) and for on-load tap changer verification. In addition, any RMO-TW transformer ohmmeter & tap changer analyzer can also perform transformer demagnetization.The series contains 4 models, with maximal test currents from 10 A (RMO10TW) to 50 A (RMO50TW). They are fitted in a portable and lightweight metal housing.All transformer ohmmeters from RMO-TW series generate a true DC ripple-free current with automatically regulated measurement and discharging circuit. The injection of current and discharge of energy from the test object are automatically regulated.Three independent channels enable testing of three windings in series. Consequently, this enables measurements of winding resistance in every tap position of an on-load tap changer without discharging between the tests.DV-Win software enables control and observation of the test process, as well as saving and analyzing the results on a PC. It provides a test report, arranged in a selectable form as an Excel spreadsheet, PDF, Word, or ASCII format. Additionally, DV-Win measures and calculates the OLTC transition time, the ripple and the winding resistance for each tap changing operation. The software can also perform the calculations necessary for the “Heat Run” test. Finally, a user can export all results in the form of a report.
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Internal Antennas
Pulse offers a large selection of internal antennas that are designed into an incredibly diverse selection of solutions, from smart home IoT devices to utility meters, from point of sale products to wireless charging. The PCB antennas, including those made with flexible material, are made to be mounted or adhered against a plastic surface and connect via cable to your PCB, and cover the ISM, WiFi, GNSS, and cellular bands. The NFC selection for 13.56 MHz will work with both 50 and 80 Ohm radios and include antennas with a ferrite backing to work even when mounted against metal. The selection of active GNSS patch antennas with cable are perfect for ensuring your device’s whereabouts are accurately tracked. Finally, the many transmit and receive coils for wireless power charging will add this popular consumer capability to your product, cutting one final cable from design. Use the product finder below to find the perfect internal antenna solution for you.
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Digital Micro Ohm Meter
PM-506
Laxtronics Instruments & Controls Pvt. Ltd
1 Micro Ohm To 20 Kilo Ohms, Test Current 1 Ampere To 1 Micro Ampere.
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Graphical Source Measure Unit
IT2800
The IT2800 Series are compact and cost-effective bench-top Source Measure Units (SMUs) with the capability to source and measure both voltage and current. The IT2800 Series combine the capabilities of a voltage source, a current source, a voltage meter, a current meter and an ohmmeter (along with the capability to switch easily between these various functions).
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Transformer Resistance Testing
Weshine Electric Manufacturing Co., Ltd
Transformer insulation resistance deterioration is one of the most common causes of transformer failure: a failing transformer is a costly replacement in an electrical system with the potential for a long downtime. If you fail to maintain your transformer with regular insulation resistance testing (as can be carried out by the WESHINE Transformer Ohmmeter (VS-3110 series) of transformer test equipment) then it’s likely to fail before reaching its maximum operating life.
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Safety Ohm Meter
Type 1681
Aeronautical & General Instruments Ltd.
The Type 1681 Safety Ohm Meter range are rugged highly portable intrinsically safe instruments for use in potentially Explosive Atmospheres. Six measurement ranges enable it to measure resistances from 1mΩ and 20kΩ using a 3½ digit backlit LCD display.
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Micro OHM Meter
Cambridge Instruments & Engineering Co.
This Test set is capable to measure low resistance like switch contacts, breaker contacts, busbar slices, joints, fuses, low inductive windings etc.
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Low Thermal Input Cable
34102A
Use this 1.2-m shielded, 4-conductor connector only with the 34420A Micro Ohm Meter; terminated in copper spade lugs.
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TERA Ohmmeter
Due to its compact design and battery operation, our TERA ohmmeters are ideally suited for mobile applications in industrial areas; They can also be in a stationary way through their mains connection. They are operated by only two buttons, are menu-driven and therefore very user-friendly. All settings are in the LCD display.
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Million Meg Ohm Meter
Model HIR 603
Laxtronics Instruments & Controls Pvt. Ltd
100 Kilo Ohm To 100 Tera ohms, Leakage Current 10 Milli Ampere To 1 Nano Ampere, Test Voltage 10 Volts DC To 1000 Volts.
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Portable Ohmmeters
Our portable digital ohmmeters offer true portability without any sacrifice to accuracy or functionality. These ruggedly constructed instruments are ideal for use in the workshop, field or test facilities.
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Contact Resistance Meter
PCRM200S
The Motwane Manufacturing Company
The Motwane make Contact Resistance Meter (Model:PCRM200S) is a digital micro-ohmmeter, specially designed to measure extremely low resistance in micro ohm. The Instrument is based on Kelvin 4-wire connection method for measurement of low resistance.The Current injection is fixed at 100A & 200A. Test information like current injected with measured resistance & voltage drop is displayed with real time data on large LCD with backlit.This User friendly Instrument and it's accessories are housed in easy transportation case. Advanced Windows based software isprovided for data downloading, analysis and report generation. Internal memory of 199 records is provided for onsite data storage withDate & Time stamping & Recalling facility. Thermal printer is the additional feature provided to print the test results.
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Bench-Mounted Ohmmeters
The range of our bench-mounted ohmmeters are ideally suited for laboratory testing of samples and production line testing.
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Live-Line Micro Ohmmeter
Ohmstik Plus
The Ohmstik Live-Line Micro Ohmmeter measures the micro-ohm resistance of conductors, connectors, splices and switching devices positioned directly on an energized, high voltage lines. This measurement is much more direct than infrared thermography, and is not subject to emissivity, weather, current loading, background, and other influences that cause infrared errors.
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Electrical Measurement Equipment
Portable equipment designed for maintenance and commissioning of substations and power plants. Low resistance micro ohmmeters, digital timers, windings resistance, contact resistance, circuit breaker timing and motion, phase angle and frequency measurements.
