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Resistance Meters
measure opposition to electrical current.
See Also: Resistance, Resistivity, Resistance Standards, Resistance Test, Resistivity Meters
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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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Transformer Winding Resistance Meters
RMO TD Series
The RMO-TD Series On-Load Tap & Winding Resistance Analyzer is designed for the measurement of winding resistance of inductive elements, and for tap changer analysis. The RMO-TD series is based on the latest technology, using the most advanced switching technology available today. The RMO-TD series is accurate (0.1%), powerful (up to 60 A) and lightweight. It generates true, ripple-free DC current with automatic metering control and a discharge circuit.
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Transformer Winding Resistance Meters
TWA Advanced Series
The TWA advanced series instruments are designed for six-winding resistance measurement and simultaneous three phase on-load tap changer analysis of both the primary and the secondary transformer windings. This is performed with a one singlestep cable setup, with test currents of up to 40A. Each transformer configuration has a special measurement algorithm which is optimized for the fast stabilization of test results. The TWA instruments generate a true DC ripple-free current. Both the injection of the current and the discharge of energy from the magnetic circuit are automatically regulated.
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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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Winding Resistance Meters
The NMC 'TDR' is a high precision, new generation, light weight large output current and micro-processor controlled tester. This replaces old DC wheat stone bridge and double arm bridge for measurement of DC resistance. 'TDR' adopts new advanced test current power supply technology, four terminal measurement, digital display of resistance value and test current. 'TDR' is powered by 220V AC mains single phase supply. The measurements are accurate as the test current is highly stable. High automation is achieved with automatic discharge warning.
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Transformer Winding Resistance Meters
RMO TW Series
The RMO-TW instrument can perform a simple, fast and reliable verification of a transformer on-load tap changer. This instrument allows measurements of a winding resistance at each tapping position of an on-load tap changer without discharging between tests. Problems with OLTC switching, such as interruption, can be detected with these measurements. The results are displayed on a backlit LCD screen.
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Transformer Winding Resistance Meters
TWA Standard Series
The TWA standard series instruments are designed to measure the resistance of six coils and simultaneously analyze the three-phase tap changer on load of the primary and secondary transformer coils (provided by model TWA40). This is done in a single cable configuration, with test currents up to 40A. Each transformer configuration has a special measurement algorithm that is optimized for rapid stabilization of test results. The TWA instruments generate a true DC current without ripple. Both current injection and magnetic circuit energy discharge are automatically regulated.
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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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Digital Surface Resistance Meter
NEW Enclosure with Rubber Grip EdgesThinner and narrower design is easier to hold and provides protection from drops.NEW Quick Check ButtonBypasses the 15 second electrification period to allow quick spot checks.NEW Battery Compartment
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Resistance System - Digital Surface Resistance Meter up to 200 TeraOhms
PRS-801B
- Accurate Wide Range Resistance Measurements: 0.01 Ω to 2.00x1014 Ω- Accuracy of ±2% from 1.00 Ω to 9.99x1010Ω- Variable Voltage 0.1 mv to 9.99 V for low resistance measurements- Constant Test voltages 10V and 100V meeting ANSI/ESD S20.20- Auto Resistance Range Control- Auto Test Voltage Control- Uses a Rechargeable Li-ion Battery Pack- Takes Approximately 8,000 Measurements on a Single Charge (480 hours typical)- 999 Data Set Memory- Download to Excel® in Batches or Individual Measurements with Prostat Connect 2.0- Uses Micro USB Cable for Charging and Downloading Data- Charges in 2 Hours- 2-year Limited Warranty on Main Instrument
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Surface Resistance Meter Kit - Test Anti-Static, Static Dissipative and Conductive Surfaces
PRS-812RM
- Surface Resistance Tester from 0.10 Ω to 1 Teraohm- Constant Voltages 10 volts and 100 volts- Automatic Electrification Period- Determines if a surface is Dissipative, Conductive, or Insulative- Measures resistance point-to-point(Rtt) and resistance to ground (Rtg)- Measures resistance of ESD Flooring, ESD Worksurfaces and Packaging- Conforms to all ESD Association Standards for Resistive Characterization- Includes 2 each Surface Resistance Probes- Packaged in a hard shell Carrying Case- Certificate of Calibration Traceable to NIST included- 2-year Limited Warranty on Main Instrument
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Electrical Calibration
GF6018A
Beijing GFUVE Electronics Co.,Ltd.
The equipment is compliance with national verification regulation: JJG1242005 "Ammeter, voltmeter, power meter and resistance meter verification rules" and related national standards. 0.05 single-phase AC/DC standard source, can verify magnitude 0.2 and the following AC/DC voltmeter, ammeter, frequency meter, resistance meter. The source signals by using DSP and 16-bit high-speed analog-to-digital converters of controllable sine wave, the distorted wave signal source.The equipment comes with RS-232 interface, can be connected with PC to a semi-automatic verification system. It has precise interface and multi-functions including verification, storage and query.The equipment adopts color LCD screen, chart character display is clear, with high precision, stable and reliable, convenient operation and flexible characteristics.
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Carbon Sensor Resistivity Meter
HE-960R-GC(W)
The HE-960R-GC(W) is resistivity meter to use glass carbon for its sensor.A glass carbon sensor is not contaminated by metal elution and is chemically resistant to such wet cleaning solutions as hydrofluoric acid and hydrogen peroxide. This is especially effective for resistivity measurement in the rinse process of single-bath cleaning systems and it enables high quality control in the cleaning process.
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8 channel Memory Earth Resistivity and IP Meter
SuperSting R8 IP
The SuperSting R8 IP is a state-of-the-art multi-channel portable memory earth resistivity meter with memory storage of readings and user defined measure cycles. It provides the highest accuracy and lowest noise levels in the industry.This new instrument revolutionizes the field of resistivity imaging surveys by its capability to simultaneously measure up to 8 channels using a high power transmitter so that field data production can reach previously unheard of speeds
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Resistivity Meter with Multi Electrode
POLARES
Till this moment the use of Electrical Resistivity Tomography (ERT) for geology has always been basically the same since its debut, based on the original vertical Electrical Soundings (VES) principles: applying a continuous current to two stakes inserted into the ground and measuring the corresponding voltage between other two. The applied current and thus the relative tension have always been continuous, with an inversion in polarity for each measure. The new tool POLARES uses an alternate current, instead, sinusoidal type, with an adjustable frequency.
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Surface & Volume Low Resistivity Meter for Conductive Materials
Loresta GP
The Loresta GX Meter is an intelligent, multi purpose low resistivity meter equipped with software that calculates resistivity correction factors. A variety of 4 pin probes are available for use with the Loresta GX. The instrument is typically used in Product Engineering, R&D, and Quality Control. Applications include measurement of conductive paint, conductive plastics, conductive rubber, conductive film, silicon wafers, antistatic materials, EMI shield materials, conductive fiber, conductive ceramics, etc.
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Earth resistance meters
The PROMAX earth meters guarantee the proper operation of industrial and home electrical circuits.
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Full- Channel Resistivity Meter
ZZ Universal 64
ZZ Resistivity Imaging Pty. Ltd.
Comprehensive resistivity instrument. 61 channel system.
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Resistance Meter
MS8-2L
M-module MC8-2L is a mezzanine module designed to measure resistance using a two-wire measurement scheme in eight channels (eight-channel digitizer). М-module МС8-2Л is installed on the mezzanine carrier - NM module and is connected to it via a local information highway. Up to four m-modules of various types can be installed on the HM module. The NM 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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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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Highly Inductive Resistance Meter
MR 8050
With the MR 8050 resistances highly inductive Resistance Meters windings of transformers, motors and reactors can be measured. (range 100 µΩ with 0.01µΩ resolution up to 6 kΩ). The performance of the test objects can be up to 800 MVA or even more. The magnetic loading of a transformer is performed quickly using a high loading voltage (60V). This is important for time critical measurements (cooling curves). The unloading of the transformers core is very fast, very safe, as the energy is total destroyed in the MR 8050.
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Field-installation Type Electric Resistivity Meter (Four-Wire Transmission)
HE-200R
HE-200R connects resistivity sensor (ERF Series) and measures resistivity and temperature in the sample water. It is suitable for measurement of UPW resistivity.
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Single-Phase Transformer Winding Resistance Meters
RMO-TD Series
Using the most advanced switch-mode technology available today, the RMO-TD series is ideal for winding resistance measurements of inductive objects. Transformer resistance meters and tap changer analyzers are perfect for testing:transformer windings (power transformers, distribution, autotransformers),all types of tap changers,generators,electrical motors,high-current busbar joints,cable splices,and welding joints.In addition, transformer demagnetization can also be done with all RMO-TD instruments.The RMO-TD series contains 3 models, with maximal test currents from 25 A (RMO25TD) to 60 A (RMO60TD).The three independent voltage sense channels enable testing of three windings in series. This enables measurements of winding resistance in every tap position of an on-load tap changer without discharging between the tests.All RMO-TD transformer resistance meters have a built-in tap changer control unit. It enables remote control of on-load tap changer (OLTC) directly from the device. In order to make the most out of this feature, DV-Win software is included which can be programmed 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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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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2-Channel Resistivity Meter
HE-960RW-GC(W)
The HE-960RW-GC(W) is a 2-channel simultaneous-measurement carbon sensor, resistivity meter that can be connected with two sensors. The measurement range is: 0 - 100.0 MΩ・cm.The high performance and high precision is maintained while simultaneously measuring the output of the resistivity of different two locations. This is carried out in a single converter for overall cost efficient performance.
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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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Insulation Resistance Meter
AMIC-10
The AMIC-10 digital insulation resistance meter is used for direct measurements of the insulation resistance of electrical equipment working with voltage up to 1 kV. In addition, this meter makes it possible to measure compensation and protective connections, low-voltage resistance measurements and DC and AC voltage measurements.
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Resistance System Kit
PMK-151
The PMK-151 Basic Measurement Kit has all the functionality of the PMK-152, but adds computer downloading capabilities. It contains all the instruments you need to take a variety of resistance measurements.The PMK-151 includes Prostat's PRS-801 Resistance Set with modified 5 pound conductive rubber electrodes, the PRS-801 wide range resistance meter, and Prostat PRS-801 Connectivity software for computer data downloading. You can take measurements at 10 and 100 volts with accuracy within ±5%.
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Winding Resistance Meter 50Amps, 3 Channels Rack
WR50-13R
Raytech Digital Winding Resistance meter WR50-13R 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.
