Microhmmeters
Measure low resistance in µA.
See Also: Ohmmeters, Micro Ohmmeters, Teraohm Meters, Megohmmeters
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Programmable Micro-Ohmmeter
4300C
The 4300C is the perfect instrument for tackling ultra-low resistance testing requirements associated with motors, transformers, fuses, connectors, breakers, bonding/weld resistance, and many other applications. The 4300C Digital Micro-Ohmmeter measures a variety of low-resistance devices ranging in value from 100nΩ to 20kΩ. The flexible measurement format of the 4300C provides six ranges of user selectable test current (from 0.1mA to 10A) and three voltage sensitivity settings (20mV, 200mV, and 2V).
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Micro-Ohmmeters
The Micro-ohmmeter performs reliable low resistance measurements with test currents to 10A and resolution to 1. Uses a four-wire Kelvin bridge method, which eliminates test lead resistance for a measurement accuracy of 0.25%.
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Microhmmeter
RMO-G
The RMO-G series micrometers are designed with the latest technology to generate a DC ripple-free current with automatically regulated test ramps, no magnetic transients and very efficient filtration.
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Micro-Ohmmeter and Loop Resistance Tester
LRT 6000
LRT 6000: The right solution for impedance resistance measurement in compliance with all aircraft specifications on plane, helicopter, rocket, army vehicles for both production andmaintenance. It is a very easy-to-use and versatile instrument. Its ergonomics allow the user to use it either placed on the ground or across one's shoulder or chest. Awide back-lit LCDdisplay combinedwith an intuitive keyboard ensures simple and easy operation.
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High Precision Digital 5A Micro-Ohmmeter
DRM-40™
The DRM-40™ is a lightweight and portable micro-ohmmeter designed to measure very low resistances from 0.01 μΩ to 200 Ω. It is the most accurate in its category.
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High Precision Digital 10A Mirco-Ohmmeter
DRM-10A™
The DRM-10A™ is a lightweight and portable micro-ohmmeter designed to measure very low resistances from 0.01 μΩ to 200 Ω. It is the most accurate in its category.
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10 A portable digital micro-ohmmeter
MPK-253
The MPK-253 digital very low resistance ohmmeter is a portable, microprocessor-controlled instrument used to accurately measure resistances of switches and circuit breaker contacts, transformer and motor windings, wire and cable samples, joints in busbars, etc., using test currents from 1mA up to 10 A.
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Contact Resistance Test Sets
When a high current passes through a pair of mechanically independent metallic contacts, the resistance must be as low as possible. An increase in resistance can lead to additional degradation, as I2R losses will cause local heating of the contact surfaces. Our range of micro-ohmmeters measure both steady state and dynamic low resistance values. With test currents up to 600A available, logging and trending are also available on some models. We ensure that our Contact Resistance tests sets are portable, making them suitable for field measurements. Our contact resistance testers’ portability makes them ideal for a vast range of resistance testing across the entire LV, MV HV and EHV spectrum.
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Micro-ohmmeters
MMR-650
Designed to measure very low resistances of both resistive and inductive types of objects, including amorphous core transformers. This product is made to be used in power plants, railways and maintenance companies, to measure welded and soldered connections, equipotential bondings, earthing conductors, contacts, bolted connections, windings of motors and power transformers and other resistive and inductive objects. MMR-650 can be also utilized on a production lines (eg. at the final production control stage). An innovative combination of a high-performance measuring device with a modern user interface and advanced data management system. Wireless data transmission, enhanced system of 2D codes and ability to print labels to identify test items, all contribute to bringing new quality of work and allow the user to perform a wide range of measurements.
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Microhmmeter
RMO-A
These devices can store internally up to 500 measurements marked with date and time. The equipment is accompanied by the DV-Win software to treat the data as an Excel sheet to show them as a diagram, passing the data via USB (or optionally via Bluetooth or RS232.
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10 A True DC Micro-Ohmmeter
AUTO-OHM 10
The Vanguard Auto-Ohm 10 is a 10-ampere battery powered micro-ohmmeter designed for low-resistance-measuring applications such as the measurement of resistance in circuit breaker contacts, bushing contact joints, and welding joints. The unit is powered by four 3400mAh, 3.7Vdc Li-Ion rechargeable batteries. With these high capacity batteries, up to 2,900 tests per charge (10A/2 second duration) can be performed in the field. The Auto-Ohm 10 features a built-in charger that can charge the batteries when the unit is not in use.
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Circuit Breaker Analyzers & Timers
CAT circuit breaker analyzers and timers are advanced standalone or a PC controlled instruments for circuit breaker maintenance. Typical application areas of CAT instruments are medium and high voltage substations at electric power generation, transmission, and factories of switchgear. Also, industrial environments and electric power distribution are suitable application areas for these circuit breaker testing instruments.DV Power CAT circuit breaker testing instruments are portable and lightweight. They are designed for performing mechanical operations intended for circuit breakers testing according to standards IEC 62271-100 and IEEE C37.09.These instruments measure:the timing of main contacts, pre-insertion resistor contacts, auxiliary contacts operations,coil currents,motion parameters,voltage recording,main circuit resistance,arcing contacts wipe,and any relevant analog signal.Motion transducer channels provide measuring a displacement of the circuit breaker moving parts, contact wipe, over-travel, rebound, damping time, and average velocity. Even more, CAT circuit breaker analyzer optionally has a built-in micro-ohmmeter. Hence, it provides the main circuit resistance measurement and dynamic resistance measurement. Dynamic resistance measurement is an effective method for arcing contacts condition assessment.
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The Lightest Micro-ohmmeter In The Industry
RMO-H
The RMO-H is a portable, battery-operated micro-ohmmeter based on state-of-the-art technology, using the most advanced battery mode and switching technique available today. The high-capacity Li-Po battery allows the generation of a ripple-free DC current of up to 300 A. The test current is user-selectable and generated in an automatically regulated test ramp. During the test, the RMO-H increases the current before the measurement and decreases it afterwards. This significantly reduces magnetic transients.
