Resistance
that which keeps current from flowing freely.
See Also: Resistivity, Resistance Standards, Resistance Meters, Resistance Test, 4-wire
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Resistance Calibration
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Process Instruments maintains fractional part-per-million accuracy with a state of the art resistance calibration facility. Specialized services include precision resistor manufacture, resistor and shunt repair, characterization of alpha and beta temperature coefficients and the determination of barometric effects on resistance values.
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Earth Resistance Tester
M71
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M71 has been developed to measure earth resistance with 2 wires and 3 wires by voltammetric method in compliance with standard IEC/EN61557-1.
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Product
Digital Earth Resistance Testers
ST-1520
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Capable of measuring earth voltage.2mA measuring current permits the testing of earth resistance without tripping earth leakage current circuit breakers in the circuit.Auto power off function.The timer operates automatically for approximately three to five minutes when the "push button switch" and "timer on button" are pressed together.
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Insulation Resistance Meter
AMIC-5005
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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
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Earth resistance meters
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The PROMAX earth meters guarantee the proper operation of industrial and home electrical circuits.
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Insulation Resistance Tester
1507
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The Fluke 1507 is a versatile, compact, handheld insulation tester for advanced industrial and electrical insulation testing. Its multiple test voltages make it the ideal tool for many troubleshooting, commissioning, and preventative maintenance applications.
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20J3 SHEET RESISTANCE METER
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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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Resistance Decade Box
HARS Series
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The HARS Series is the best choice when you need a laboratory grade, tight tolerance, high performance resistance decade box that is also cost effective.
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Resistance & Resistivity Probes
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Surface and/or volume resistance measurements are key parameters in describing materials' electrical properties. ETS offers a variety of probes to support numerous industry requirements and applications.
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Welding Resistance Tester
WRT
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The Welding Resistance Tester is used in battery assembly lines to detect defective intercell connections. It is equipped with a 5-channel test head for car and truck batteries. It features 1-20 O DC resistance ranges and a multi-line LC display for OCV, CCV, and DCR measurements for 5 intercell connections.
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Product
Earth Resistance Tester
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PeakTech Prüf- und Messtechnik GmbH
A Rugged sealed digital earth tester is built with all the protection you need for outdoor use. The instrument is suitable for the testing of single earth electrodes such as lightning conductors and other small earthing systems according to VDE 0413. The resistance of conductors such as continuity and conduit coupling joints can also be measured. Two-terminal operation measurement, which reduces the accuracy, can also be done by shorting P and C terminals. It has an advanced circuit design that permits the instrument to operate with the minimum influence from earth voltage and earth resistance of the auxiliary spikes.
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Product
Ground Earth Resistance Tester
2678X
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Shenzhen Chuangxin Instruments Co., Ltd.
Ground Earth Resistance Tester verifies the integrity (continuity) of the protective bonding of the equipment (Class I equipment) designed to secure safety through the basic insulation and protective earthing. It is also called earth (ground) bonding test. If the continuity of the protective bonding is confirmed, we can conclude that the equipment has the requirements for preventing electric shock even if the insulation between the primary circuit and the accessible conductive section fails and a fault current flows through the distribution system.
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ITO Sheet Resistance Standards (ITOSRS)
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Indium Tin Oxide Sheet Resistance Standards (ITOSRS) from VLSI Standards are NIST-traceable products, intended for calibration of both contact and non-contact sheet resistance measurement tools used in the LCD, flat panel and touch-screen markets.
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Resistance Welding
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Resistance welding is a method in which the welding works are heated by resistance heat generated by sandwiching the welding workpieces with welding electrodes, passing current through them, and the metal is welded while pressurizing the works.A resistance welding machine composed of welding power supply, a weld head and an electrode. The welding power supply controls a welding current,the weld head exerts a pressure on the material to weld and the electrode provides welding current and pressurization force to the part under welding. We have been providing various kinds of welding power supplies and welding heads to meet these requirements.
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Transformer Winding Resistance Meters
TWA Advanced Series
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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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Earth Resistance Meter
EM 4058
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earth tester is a digital, microprocessor controlled instrument that allows to measure the earth resistance and ground resistivity (using Wenner´s method), as well as to detect parasitic voltages present in the ground. This instrument is suitable to measure earth systems in power substations, industries, distribution networks, etc., according to IEC 61557-5.
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Electronic Resistance Stores
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Is designed to reproduce the values of resistance to direct current through channels independent and galvanically isolated from each other and from the case.
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TRANSFORMER WINDING RESISTANCE METER
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International Biological Laboratories
This Test set is suitable to measure winding resistance of transformers, single or 3-phase, star or delta connected upto several MVA.Two independent displays read the resistance of both primary & secondary windings simultaneously. However, primary or secondary winding can also be measured separately.
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Earth Contact Resistance Tester
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SCR ELEKTRONIKS have developed an equipment namely Earth Contact Resistance Tester to test the appliance. To ensure the safety of operator it is essential that the Earth path (connection) should offer minimum impedance to by pass short circuit Current to Earth. This is ensured by measuring Resistance of the Earth path by passing heavy Current say 25 A. The Earth Contact Resistance Tester essentially comprises of a Variable Current source with digital Ammeter to measure the Current supplied. The Voltage drop across the Earth path is measured with a digital Voltmeter. Optionally for a particular Current (25 A) the meter can be calibrated in terms of Resistance. A timer is provided to switch off the Current after the Set Time.
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Product
DUT Resistance Tester
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AllWin Instrument Science and Technology Co., Ltd.
1. This test verfies the integrity of DUT2. The resistance is measured by measuring voltage3. Current is made by distribution
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High Resistance Neutral Grounding Devices
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HRG systems limit the fault current by placing high resistance between neutral point of transformer (or generator) and ground. As it is not possible to locate the fault point in delta connected systems, an artificial neutral point is created and delta connected system can be grounded. This allows a fault current of a few amperes thus locating the fault point gets easy. When the neutral point is grounded thru high resistance, both continuity of operation is provided during fault condition and sufficient current (typically between 2 A and 10 A) flow is provided for ease of locating the fault point.
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Transformer Resistance Testing
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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 Megger Transformer Ohmmeter (MTO) series of transformer test equipment) then it’s likely to fail before reaching its maximum operating life.
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Insulation Resistance Meter
AMIC-2505
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Measurement of insulation resistance: 500,1000 and 2500V (2TΩ) ; 2 and 3 wire method ; Measurement of DC and AC voltages at 0...600V ; Measurement of leakage currents
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Digital Low Resistance Tester
TH2512
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Shenzhen Chuangxin Instruments Co., Ltd.
The TH2512 series digital dc low resistance tester i s an intelligent, wide range, high-precision tester which suitable for transformer, inductor copper resistance, relay contact resistance, switches, connectors, wire resistance, contact resistance component solder contact resistance, PCB line, welding hole resistance and metal detection, etc. It’s applied to the production line and can use HANDLER interface and GPIB interface (option) output good/bad signal, in order to improve production line automation testing capability.
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Product
Yellowing Resistance Chamber
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Sataton Instruments Technology CO., Ltd
Yellowing resistance chamber also called as discoloration meter is the professional testing instrument for measurement of yellow resistance performance by simulating sunlight. It is a useful tool for testing the yellowing resistance property of light color materials or products such as white thermoplastic polyurethane elastomer shoe sole or light synthetic materials. The chamber can also be used for printing and packaging industry for deploying chemical dyes.
