Resistance Meters
measure opposition to electrical current.
See Also: Resistance, Resistivity, Resistance Standards, Resistance Test, Resistivity Meters
-
Product
Resistance Meters
-
ACL provides surface resistance/resistivity meters and digital megohmmeters to quickly and accurately measure resistivity.
-
-
Product
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.
-
Product
Three-Phase Transformer Winding Resistance Meters
TWA Advanced Series
-
TWA Advanced series is the latest DV Power solution for three-phase transformer winding resistance measurement and tap changer analysis. They are capable of testing six transformer windings with a single cable connection, as well as three-phase automatic transformer demagnetization. It has the option of the automated test mode, where the instrument operates the tap changer without operator input (minimizing the risk of human error) and records winding resistance results based on pre-selected stabilization criteria.The unique DVtest method of tap changer analysis 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, together with the measurement of tap changer motor current which detects 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 simultaneously on three phases. It can also be performed together with the winding resistance test in all tap positions.A unique advantage of TWA Advanced instruments 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 speed up the testing– for example, it enables the operator to perform 33 measurements instead of 99 on a tap changer with 33 tap positions.TWA500 is equipped with a large 10.1” graphical touch-screen display, while TWA400 has a 7” graphical touch-screen display. Besides making the interface much more user-friendly compared to older winding ohmmeters, it also enables certain test options that were previously available only with DV-Win software. The most important among them are DVtest, tap changer motor current measurement, “Heat Run” test, test templates, and automatic test mode.
-
Product
High Resistance Meters
-
Measurements International Ltd.
Direct or Substitution Measurements, Automatic and Manual Operation, No Temperature Coefficient, Multiple Modes of Operation.
-
Product
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.
-
Product
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.
-
Product
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.
-
Product
Panel-mount Type Resistivity Meter (Four-Wire Transmission, 2-channel)
HE-960RW
-
HE-960RW connects resistivity sensor(ERF sereies) and measures resistivity and temperature in the sample water.This resistivity meter is ideal for such applications as the high-precision water monitoring employed at ultra-pure water plants used in semiconductor manufacturing.They utilize newly designed, high-precision, high-stability temperature measurement circuitry and a vastly improved temperature compensation function, an important element for measuring the resistivity of ultra-pure water.
-
Product
Insulation Resistance Meter
AMIC-5005
-
Insulation resistance measurement - 15TΩ: * 50 - 1000 V, in 10 V steps, * 1000 - 5000 V, in 25 V steps ; Memory of 999 results and transmission to PC ; Measurement of AC and DC voltage and capacity ; Measurement of leakage current ;Function with digital filter
-
Product
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
-
Product
5kV Insulation Resistance Tester
KV3122
-
KV Hipot Power Test Equipment Co.,Ltd
KV3122 Insulation Resistance Tester is suitable for measuring the resistance of various insulating materials and the insulation resistance of transformers, motors, cables and electrical equipment. Digital insulation resistance meter is composed of medium and large scale integrated circuits, including high-precision micro current measurement system, digital boost system and automatic discharge circuit.
-
Product
Ohmmetry
-
From 0.1 µOhm to TeraOhms, every AOIP ohmmeter or resistance meter covers a very large spectrum of applications, providing high quality instruments for resistance tests, electrical continuity and insulation tests. Depending on the ohmmeter, measurements can be performed either on site or in laboratory.
-
Product
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.
-
Product
Contact Resistance Meter
-
The Motwane Manufacturing Company
High contact resistance values are a definite cause of the failure or less than optimal performance in a wide variety of electrical devices. Contact resistance testing is therefore most critical to measure the resistance of electrical connections in switching devices, circuit breakers, isolators, busbars, relays, joints, connectors, cables, and cable joints. The device helps to find destructive or corroded contacts and hence protects substation devices from damage.
-
Product
Winding Resistance Meter 15Amps, 2 Channels Rack
WR14R
-
Raytech Digital Winding Resistance meter WR14 R is the rack mount version of the WR14. They are designed for high degree of accuracy for the measurement of very low resistance of any inductive loads.
-
Product
Contact Resistance Meter
CRM 200B
-
CRM 200B directly measures micro-ohm values at 100 Amps DC under live switchyard conditions.CRM 200B is specially designed to reliably measure contact resistance of circuit breakers, isolators, busbar joints, welded joints etc., under the hostile electrostatic noise found in live EHV switchyards upto 765 kV.
-
Product
SPA100
-
Our highly sensitive source picoammeter is designed for measuring and logging very small currents down to the pA range - making it an ideal instrument for scientific and research applications, including physics, materials science and electron microscopy. Full-featured at an affordable price, the SPA100 combines sensitivity, accuracy and stability to allow users to measure low currents with high precision as well as conveniently source bias voltages for experimentation. SPA100 also doubles as an ultra-high resistance meter, measuring accurately into the teraohm range. As with all our “headless” products, the SPA100 connects to PC via USB and utilises our complimentary software EPIC - enabling users to easily measure, graph and capture readings with timestamps and measurement stability information.
-
Product
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.
-
Product
4 2/3 Digital Resistance Meter (1/32 DIN)
CS3-RS
-
CS3-RS Resistance Indicator has been designed with high accuracy, display, control, remote communication.A compact body design for small equipment, laboratory instrument, and others.Also are available with relay output, analog output, RS485 Modbus RTU communication to cover a wide range of applications.
-
Product
Winding Resistance Meter
-
* Selectable four resistance ranges.* 4 1/2 digits LED display* High measurement Current (10A)* True four Technique elimanates lead resistance errors Systems* Fully protected against overloads* Proven design* Computer connectivity through RS 232
-
Product
Surface Resistance Meter
WL MIDGET
-
WL MIDGET Surface Resistance Meter is an ultra-wide range, battery operated, portable instrument for measuring Surface Resistivity and Resistance to Ground of virtually any flat surface conforming to ASTM D-257 standard method by using recommended parallel bar sensing probe. Gives simple, repeatable measurements of conductive, static dissipative, and insulative surfaces. Ranging is automatic due to the use of high-speed OP-AMP Integrated circuits being linear, with changeover points +1/2 decade on a logarithmic scale. Repeatability equals + 5%.
-
Product
Full- Channel Resistivity Meter
ZZ Universal 64
-
ZZ Resistivity Imaging Pty. Ltd.
Comprehensive resistivity instrument. 61 channel system.
-
Product
Earth Resistance & Resistivity Meter
MRU-21
-
* earth resistance measurment with 3-pole method, * measurement of continuity of equipotential bondings and protective conductors with auto-zero function - with current 200mA, * resistance measurement using 2-pole method.
-
Product
Insulation Resistance Meter
AMIC-10k1
-
Insulation resistance measurement - 40TΩ: * 50 - 1000 V, in 25 V steps, * 1000 - 10000 V, in 50 V steps ; Memory, bluetooth keyboard option, heating location ; Measurement of AC and DC voltage and capacity ; Measurement of leakage current and function with digital filter ; Measurement of continuity of protection and equipotential connections ; Adjustable alarm limits.
-
Product
Surface Resistance Meter
990SRM
-
The Model 990SRM is a convenient, pocket-sized meter for measurement of surface resistivity and resistance to ground.
-
Product
Winding Resistance Meter
TRM 50+
-
SCOPE introduces 50 A state of the art precision winding resistance meter, specially designed for field testing as well as factory testing of large transformers up to 500 MVA. Winding resistance value of transformer and rotating machine are directly displayed on 5.7” TFT display. TRM 50 is designed to work in live EHV switchyard conditions, ensuring operator’s safety and repeatability of results. Maintenance time saving is ensured by one time connection to transformer with simultaneous resistance measurement of three / six windings, measurement of resistances of all taps with automated tap change and demagnetization facility. The meter is protected against the back-EMF offered by large inductive windings.
-
Product
Electrostatic Discharge
-
Our electrostatic discharge (ESD) measurement and control solutions include charge plate monitors, sensors, resistivity meters, and voltmeters. Reliably monitor, measure, locate, and test for static electricity.
-
Product
Concentric Pen Probe
807
-
This miniature concentric ring probe allows for small areas to be measured for surface resistance in accordance to ANSI/ESD STM11.11-2006 when connected to a resistivity meter or megohmmeter.
-
Product
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.
