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Resistance Meters
measure opposition to electrical current.
See Also: Resistance, Resistivity, Resistance Standards, Resistance Test, Resistivity Meters
- Applied Instruments, Inc.
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DVB-s2 Satellite Signal Level Meter
AI TURBO S2
The AI Turbo S2's extreme ruggedness, husky battery, ease of use, and versatility, make this the ideal meter for professional satellite technicians.
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Three-Phase Transformer Winding Resistance Meters
TWA Standard Series
When it comes to winding resistance measurement on three-phase power transformers and autotransformers, TWA Standard series offers some of the most technically advanced instruments with LCD display in the market. Both models are capable of testing six transformer windings with a one-time cable connection, as well as three-phase automatic transformer demagnetization. The stored magnetic energy is safely automatically discharged at the end of the test. The built-in tap changer control unit enables automated test mode, where the instrument operates the tap changer without operator input and records winding resistance results based on pre-selected stabilization criteria. This option makes the operator’s job significantly easier.Both models can output test currents from 5 mA to 25 A DC for the purpose of winding resistance measurement. TWA40D has a special test mode for checking the synchronization of on-load tap changers with three phases simultaneously tested in parallel, in which the total test current can rise to up to 40 A DC.TWA40D has additional advantages when it comes to non-intrusive tap changer analysis. The unique DVtest method enables checking the moving contacts of on-load tap changers during the transition, measuring the transition time, detecting open circuits, and many other types of faults. It is performed with 0.1 ms sampling rate, simultaneously with the measurement of tap changer motor current which helps with the detection of motor and mechanical issues. A special proprietary algorithm is used for testing tap changers connected through a built-in series (booster) transformer. The DVtest can be performed either on one phase or on three phases simultaneously. It can also be performed as an additional test simultaneously with the winding resistance test in all tap positions.An additional unique advantage of TWA40D is the capability of simultaneously testing the winding resistance of all three phases of a three-phase transformer (connected in a YN configuration). This can significantly shorten the total testing time – for example, it enables the operator to perform 33 measurements instead of 99 on a tap changer with 33 tap positions.The test leads for TWA three-phase transformer winding ohmmeters are interchangeable with the TRT turns ratio testers, which means that both sets of tests can be performed with a single test lead connection to the power transformer terminals.
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Single-Phase Transformer Winding Resistance Meters
RMO-TT Series
RMO-TT series is perfect for measuring winding resistance of inductive objects such as power and distribution transformers or autotransformers. Additionally, every transformer resistance meter from RMO-TT series can analyze:tap changers,generators,electrical motors,high-current busbar joints,cable splices,and welding joints.Transformer demagnetization can also be performed with all RMO-TT instruments.The series is consisted of 3 models, with maximal test current from 40 A (RMO40TT) to 100 A (RMO100TT). RMO100TT is the only portable transformer resistance meter in the market with 100 A DC output current.The three independent channels enable testing of three windings in series. Consequently, a user can measure winding resistance in every tap position of an on-load tap changer without discharging between the tests.In addition to winding resistance measurement, a user can perform a detailed on-load tap changer analysis by analyzing recorded graphs (10 kHz sampling rate) and by measuring vibrations on an external tap changer tank.All RMO-TT instruments have a built-in tap changer control unit. Because of this, it is possible to remotely control on-load tap changer (OLTC) directly from the device. Also, a user can program DV-Win software to do everything automatically – running winding resistance tests and changing OLTC tap positions.The DV-Win software also 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.All results can be exported in the report format.
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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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IST(5KV~15KV)High Voltage Micro Ohm Meter,Insulation Resistance Tester Kit
Chongqing Assen Power Equipment Co., Ltd
ISF High Voltage Ohm Meter has a large LCD screen gray backlit display, data storage, data access, alarm, and automatic shutdown functions.
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OTP-Based Test System
Power electronics assemblies often cannot be tested using conventional technology for their electrical performance. Due to the adaptability of the instrumentation, the OTP concept offers an ideal platform even beyond the space requirements of several control cabinets. In order to achieve high test flexibility with different assemblies, the system was equipped with three-phase AC sources and AC loads as well as a precise three-phase power meter. DC sources and loads with different current and voltage ranges cover the test of frequent DUT operating parameters. Time-dependent voltage or current signals can be stimulated by an arbitrary generator with power amplifier. General measurements such as current, voltage, frequency, resistance can be carried out flexibly at various test points using the matrix concept. An oscilloscope with RF multiplexer is available for high-frequency measurements such as residual ripple, switching processes, etc.
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High Resistance Meters
Measurements International Ltd.
Direct or Substitution Measurements, Automatic and Manual Operation, No Temperature Coefficient, Multiple Modes of Operation.
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Megohmmeters/Insulation Resistance Testers
Full line of megohmmeters with test voltages 50V to 5000V. Capability to measure insulation resistance up to 10T. These rugged, weather resistant meters are accurate, reliable and built to perform. Battery, AC Powered & Hand-cranked models available.
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ESD LCD SURFACE RESISTIVITY METER (WITH 1 PAIR OF 5 POUND ELECTRODES)
The ESD LCD SURFACE RESISTIVITY METER provides everything necessary to test work surfaces using the procedure outlined in the EOS/ESD-S4.1 standard. This test kit makes testing surface resistance easy – simply place the weights attach the cables, switch to the correct voltage and press the button to read resistance directly on the meter. The meter incorporates parallel probes on the bottom of the unit which allows the user to make surface resistivity measurements. The parallel probes allow for quick and easy testing of a variety of surfaces and materials, without the use of the five pound electrodes
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Resistance Meter
MT16-4L
М-module МТ16-4Л is a mezzanine module (hereinafter referred to as a mezzanine), designed to measure the resistance of resistive sensors using a four-wire measurement circuit in sixteen channels (sixteen-channel digitizer). М-module МТ16-4Л is installed on the mezzanine carrier - module НМ-М and is connected to it via a local information highway. Up to four mezzanines of various types can be installed on the NM-M module. The NM-M module, together with the mezzanines installed on it, forms a VXI module of the C-1 size and is used to create information measuring VXI systems.
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Earth Ground Resistance Meter
1623-2
The Fluke 1623-2 earth ground tester measures earth ground loop resistances using only clamps, only stakes, or one clamp and stakes. With the stakeless test method, the Fluke 1623-2 is able to measure earth ground loop resistances for multi-grounded systems using only current clamps.
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Circuit Breaker Contact Resistance Meters
Vanguard Instruments Company, Inc.
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.
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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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Transformer Winding Resistance Meter
XWRM-10
The Motwane Manufacturing Company
The Motwane make XWRM-10 is a dual channel 10A rated, Transformer Winding Resistance Meter designed and developed aftere xtensive research on challenges and requirements of testing of various Transformer winding resistance. The instrument has One Current channel and two Resistance Channels. The instrument provides a large open circuit voltage of 42Volts, for fast charging of the highly inductive windings of transformers, to provide stable resistance values in minimum time. The XWRM-10 is intended to replace complex bridge set up with a single compact instrumentThe XWRM-10 is based on 4-wire measurement methodto measure low resistance accurately. The instrument iswell protected against inductive kickbacks offered by theinductive windings and gives stable reading on varioustypes of transformers.
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LCR Meter, Hand Held, 20 H, 600 µF, 20 Mohm
72-8155
72-8155 is a 3-1/2 digit digital capacitance meter with steady operations. The meter measures resistance, capacitance and inductance. The meter has a broad capacitance measurement range and precise accuracy. It can be used in measuring the circuit designed capacitance of cable, switch and PCB layout.
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20J3 SHEET RESISTANCE METER
Non-contact measurement of Ohms/sq, Ohms-cm, resistivity, thickness, and moreMeasures nearly all thin conductive materials or coatingsChoose a sensor in one of four ranges, from .005 Ohms/sq to 100,000 Ohms/sqadd other sensors laterFor benchtop or inline applicationsSimple one-button operationSmall footprint with detached sensor probeOptions include vacuum-ready probe, PC-based productivity software, Ethernet connectivity, stage, and more
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Pokit METER
Pokit Meter is a revolutionary tool in the measurement industry. Its incredibly small size means you can put it on a keychain or in your pocket for unprecedented portability. Pokit Meter harnesses the power of your smartphone, transforming it into an awesome measurement tool. The Pokit App measures a wide range of parameters, including voltage, current, resistance and temperature. It also provides continuity and a diode checker.
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Resistivity Meters
Precisely Measure Surface Resistivity, Volume Resistivity, or Resistance to Ground. Advanced Energy's Trek and Monroe resistivity meters offer accurate and repeatable measurements for surface resistivity, volume resistivity, or resistance to the ground.
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Resistance Meters
ACL provides surface resistance/resistivity meters and digital megohmmeters to quickly and accurately measure resistivity.
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Low Noise Test Leads For N1413 With B2980 Series, 1.5m
N1425A
The N1425A is designed to operate specifically with the B2985B/87B. It can hold DUTs with large terminals being used with the N1426C. The N1426A with the N1425A is available for measurements of small DUTs such as PC boards or IC sockets. The N1426B with the N1425A enables the construction of simple custom-made test leads. The N1413A High Resistance Meter Fixture Adapter is also required to connect the N1425A to the B2985B/87B.
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Millohm & LCR
Help prevent failures in motor windings, generators and transformers with a quick and easy resistance test using an Amprobe milliohm meter. To efficiently inspect and verify electronic components for quality control, choose an Amprobe LCR tester.
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Earth Resistance Clamp Meter
T2100
Clamp meters for measuring earth resistance directly on earth rods (STAKELESS METHOD) and compatible with MacrotestG series meters
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Resistance Meter
MT8-4L
М-module МТ8-4Л is a mezzanine module designed to measure the resistance of resistive sensors using a four-wire measurement circuit in eight channels (eight-channel digitizer). М-module МТ8-4Л is installed on the carrier of mezzanines - module НМ-М and is connected to it via a local information highway. Up to four m-modules of various types can be installed on the NM-M module. The NM-M module, together with the m-modules installed on it, forms a VXI module of size C-1 and is used to create information measuring VXI systems.
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Plate Rheometer
DVNext Cone
The DVNext Wells-Brookfield Cone/Plate Rheometer is a precise torque meter which is driven at discrete rotational speeds. The torque measuring system, which consists of a calibrated beryllium-copper spring connecting the drive mechanism to a rotating cone, senses the resistance to rotation caused by the presence of sample fluid between the cone and a stationary flat plate.
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Resistance Measurement
PROMET
High-precision micro-ohm measuring systems with adjustable DC test current for determining resistances on circuit breakers or inductive loads such as transformers, for example. The high-precision ohm meters of the PROMET series are used to determine very low electrical resistances in the µΩ range. The adjustable test current of up to 600 A in combination with a four-wire measuring method delivers measurement results which meet stringent accuracy requirements. State-of-the-art power electronics coupled with a robust design guarantee excellent reliability for use as a portable device in switching stations and industrial environments. Typical applications include determining the contact resistance of switchgear devices and determining the resistance on inductive loads such as transformers.
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Ground Resistance Clamp Meter
61-920
*Auto ranging*Auto power off*Hard case included*2-year warranty
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Handheld LCR Meter (100Hz to 100kHz)
ST2822
ST2822 series handheld LCR meter is a portable handheld measuring instrument used to measure the parameters of inductance, capacitance, resistance and other components. Small in size, powered by 8.4V rechargeable battery (ST2822A is 9V non-rechargeable battery) or external power adapter, it can be used not only in desktop applications, but also in mobile measurement and handheld measurement.ST2822 series apply the ultra-low power consumption design and high density SMD assembly techniques and can simultaneously display primary and secondary parameters on a LCD display with backlight. The dual-color shell is gorgeously once shaped; and functions are easy to operate. The test frequency is up to 100 kHz, the readings of primary parameter 40,000 counts and the resolution of dissipation factor 0.0001. Accurate and convenient measurements of passive-components can be achieved in different occasions for a long time.
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Insulation Resistance Meter
1503
The Fluke 1503 is a great choice for basic residential and commercial electrical insulation testing. This rugged, compact tool fits in the palm of your hand. The 1503 is the same form factor as the Fluke 1507 but with a few less features. You can count on it to handle the most common tests at a most affordable price. Additional features, like the remote probe, reduce the time needed to perform repetitive testing.
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Femto / Picoammeter and Electrometer / High Resistance Meter
B2980A Series
Both the picoammeters and electrometers provide a world-best performance of 0.01 fA (0.01 x 10-15 A) current measurement resolution. In addition, the electrometers can measure resistance up to 10 P (10 x 1015 ), which is also a best-in-class specification. Finally, since AC power line noise can be difficult to eliminate when making low-level measurements, both the picoammeters and electrometers are available in battery powered versions.
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Winding Resistance Meter 100Amps, 2 Channels
WR100-12R
Raytech Digital Winding Resistance meter WR100-12R is the enhanced version winding resistance system with a most advanced demagnetizing circuit as a rack version. It is designed for high degree of accuracy for the measurement of very low resistance of any inductive loads.
