Zero Resistance Ammeters
measure galvanic current and resistance. Also known as: ZRA
See Also: Ammeters, Nanoammeters, Picoammeters
-
Product
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.
-
Product
Resistance Bridges - AccuBridge® Line
-
Measurements International Ltd.
The Resistance Ratio Bridge from Measurements International is the next generation replacement. Measurements International is pleased to release the next generation room temperature Direct Current Comparator Resistance Ratio Bridge.
-
Product
4 2/3 Digital Resistance Meter
CS2-RS
-
CS2-RS Resistance Indicator has been designed with high accuracy measurement, display and communication of Ohm (2 wire) as like as Coil of motor or transformer.The meter supports Field Calibration function. It can be calibrated with sensor (Resistance) to meet machinery structure.We build flexible function as like as 3 bank (for multi-range scaling and set point) and 3 external control inputs meet to various testing equipment inquiry.They are also building in 4 Relay outputs, 3 External Control Inputs, 1 Analogue output and 1 RS485(Modbus RTU Mode) interface with versatile functions such as control, alarm, re-transmission and communication for a wide range of machinery and testing equipments applications.
-
Product
SMD Tester Capacitance Resistance Diode Tweezers Test Pen Multimeter SMD Meter
VA503
-
Shanghai Yi Hua V&A Instrument Co., Ltd. CO.,LTD
SMD tester Capacitance Resistance Diode Tweezers Test Pen Multimeter SMD Meter. SMD Components Identifier
-
Product
Radiation Resistant Resolver
-
Computer Conversions Corporation
Computer Conversions GT Transducers are brushless, Electromagnetic, Rotary Sensors used to provide Precise Absolute or Incremental Position, and Velocity feedback in harsh environments. All Computer Conversions Transducers are continuous rotation, bidirectional, and electronically passive devices (no electronic components to degrade or fail), that require zero maintenance, and may be installed in virtually inaccessible locations.
-
Product
IEC60529 IPX6X Sand Resistance Sand And Dust Chamber
CX-SC800PL
-
Shenzhen Chuangxin Instruments Co., Ltd.
IPX6X Sand Resistance Sand and Dust Chamber is applied to all mechanic, electric, electronic, electric chemical and mechanical and electric equipments, it is used to evaluate whether equipment can resistivity and storage, running or not in air of dry sand or dust. It is applied to IEC-529, GB4208-93, GB2423.37-89 and GJB150.12.
-
Product
Insulation Resistance Measurement
MD 5KVr
-
The digital insulation tester model MD5KVR is TENTECH's cutting edge insulation analyzer equipment and it is one of the most complete and sophisticated available in the international market. A software allows for further analysis of tests results, including features such as graphical representation and automatic report generation. Its proven technology provides safe, reliable and accurate measurements of insulation resistances up to 5 TΩ, with 4 preselected test voltages, 500 V -1 kV - 2,5 kV - 5 kV. Other test voltages, from 50 V to 5 kV, can be selected in 25 V or 500 V steps.
-
Product
Resister Blackjack
-
Resistor blackjack is like regular blackjack but better! Your goal is to assemble a single resistance from several resistors that is as close to 21k while not being over.Unlike regular blackjack, the resistors can be combined in series and in parallel, giving the game a whole new dimension. Plus, resistors have tolerances so achieving a mathematical 21k doesn't guarantee a win.
-
Product
Contact Resistance Measurement System
CRMS
-
The CRMS is a system designed to allow any user to measure the resistance of each set of relay contacts associated with the relay under test. The test system consists of a CONTACT RESISTANCE MEASUREMENT UNIT (CRMU), a MULTIPLE RELAY TEST RACK, as well as an interconnect CABLE ASSEMBLY. Either DC or AC energy to pick and drop relay coils under test for all contact measurements is supplied from the CRMU and easily interfaces with the Multiple Relay Test Rack. For additional and more thorough testing of relays an external relay tester can be interfaced to the Multiple Relay Test Rack to supply energy to the relay coil. It is recommended that the UTE Relay Tester With Timer/Counter (UTE Product # 15967-00) be utilized so the operator can take full advantage of the unique features it offers
-
Product
Insulation Resistance Tester
WB2681A
-
• Insulation test voltages: DC250V、DC500V、DC1000V • Range of open-circuit voltage: ±10% rated voltage • Testing time: 3~99 seconds or controlled manually
-
Product
Winding Resistance Meter
TRM 25
-
SCOPE introduces 25 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 25 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
Terminal High Resistance
-
Terminal High Resistance Standards that can be rack or bench mounted. The 6636 Series provides a set of customer chosen precision resistance standards enclosed in a temperature controlled chamber.
-
Product
[5kV AC/6kV DC] Hipot and Insulation Resistance Tester, Rise/Fall-Time Control Function Equipped
TOS5300 Series
-
The "TOS5300 Series" is a series of test instruments used in Hipot (withstanding voltage) tests and insulation resistance tests, two of the four tests regarded as necessary for ensuring the safety of electrical products. With an output of 5 kV/100 mA (AC) and 6 kV/10 mA (DC), the series can be used in Hipot (withstanding voltage) & insulation resistance testing of electronic equipment and electronic parts, based on the requirements of IEC, EN, UL, VDE, JIS, and other international safety standards and the Electrical Appliance and Material Safety Law. Also, the test voltage stability is improved with the adoption of a newly developed switching amplifier. Since the output voltage can be kept constant even when the AC line voltage or frequency changes, consistent testing can be performed, even when the power supply environment is in an unstable region. The TOS5300 is also equipped with a number of features that are capable of meeting a variety of test needs. It is a new low-cost standard model that provides thorough operability, reliability and safety.
-
Product
High Performance UV Nanoimprint Resist
AMONIL®
-
UV Nanoimprint is a mechanical molding technique. A template made from quartz or a flexible elastomer with a 3D relief is brought into intimate contact with a UV-curable resist spin-coated on top of a substrate. Applying low imprint pressure at room temperature features are filled within seconds due to the low viscosity of the imprint resist. The resist is hardened via UV-light through the backside of the template. Finally substrate and template are separated. The replicated resist relief can further be transferred into the substrate via RIE-process or used as functional element.
-
Product
Easy Pole Clamp-On Ground Resistance Tester w/ Super Slim Jaw
FT6380
-
The FT6380 measures grounding resistance simply by clamping to multiple-grounded ground wires. No auxiliary grounding rod is needed, and there is no need to disconnect the ground wire from the grounding rod. The compact, low-profile sensor can be used to clamp ground wires with ease, and also provide AC current measurement functionality and can measure currents ranging from leakage current on the order of several mA to load currents of up to 60 A.
-
Product
4-Wire Resistive Type Single-Touch Module
ETM-RES05C
-
Resistive touch technology, supports 4-wire Touch Screen, Supports USB and RS-232 Interface, Resolution support to 2048 x 2048, High Reliability and Fast Conversion Time.
-
Product
Weather Resistant Surge Protector for RS485 Control & 12VDC Power Lines
SP-RS485-12V-O
-
Ideal for applications such as video surveillance cameras and access control. Protects sensors running on 22 AWG 2-wire sensor cables or 12VDC power lines against the effects of electrostatic discharge, faulty wiring and lightning. RS485 protection: Stage 1 clamping voltage: ±90V; Stage 2 resistance: 3.3 Ohms; Stage 3 clamping voltage: ±7.5V. 12VDC power lines protection: Stage 1 clamping voltage: ±90V; Stage 2 current rating: 3A; Stage 3: 12V TVS (transient voltage suppression) diode. Screw terminal pairs for RS485 and 12VDC power lines protection. Will also protect two single ended data, analog or control lines. Impact and weather resistant enclosure with locking hinged cover.
-
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
200V 20 Ohm Portable Battery Resistance Voltage Tester
TOB-SM8124
-
Xiamen Tob New Energy Technology Co., Ltd
200V 20 Ohm Portable Battery Tester For Battery Voltage and Resistance Testing. TOB-SM8124 Resistance Voltage Tester is a portable battery tester used for battery voltage and internal resistance test, it is Suitable for lithium-ion battery, nickel-metal hydride, lithium manganese, lead-acid battery and other single battery or battery pack with voltage no more than 200V.
-
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
Ground Resistance Tester
-
Weshine Electric Manufacturing Co., Ltd
1.Soil resistivity tester supports 2, 3 and 4wire grounding resistance measurement. 2. 4digit large LCD display with white screen backlight, suitable for use in dimly lit places. 3. IP65 protection grade, good waterproof, compact and portable, supports multiple functional tests.
-
Product
Non-Contact Resistance Online Tester
-
Non-Contact Resistance Online Tester is our company devotes ourselves to Grounding resistance test technical research’s another new high-tech product for more than ten years. Detector adopts weather fastness material manufacture, temperature resistance, cold-resistant, corrosion prevention, fire prevention. Detector’s structure is rigorous and firm, against rain, dustproof, installation and use outdoors. Non-contact measurement, safe and reliable, Ease of installation. Grounding down lead is directly through the detector perforation, Will not affect lightning protection grounding effect and the normal operation of the facilities. Ensure high-accuracy, high stability and high reliability of long time on-line monitoring outdoors, underground mine and indoors.
-
-
Product
Manual Dielectric Constant, Tan Delta & Resistivity Test Set
-
*AC and DC test Voltages switched internally.*Direct digital display of test voltages.*Auto ranging and direct read out of volume resistivity.*Cell constant adjustment and Tan Delta zero correction.*Built-in protection for test sample flash over.
-
Product
Digital Earth Resistance Testers
-
This groundmeter is designed for testing ground wire of electric power net, as well as earth voltage test in the fields of household electric power system and delectric appliance application.
-
Product
15" XGA Industrial Monitor With Resistive Touch Control, Direct VGA, DP Ports, And 304 Stainless Steel Front Bezel
FPM-815S
-
15" XGA TFT LED LCD with 70K backlight lifetimeRobust design with 304 stainless steel front bezel and anti-rust coated SPCC rear coverWide operating temperature range (-20 ~ 60 °C/-4 ~ 140 °F)Increased reliability with enhanced 5-wire resistive touch sensorAnti-glare screen with tempered glass and IP66-certified front panelDirect VGA & DP video input interfaceOSD control pad with lockable function on rear panelSupports panel, VESA, wall, desktop, and stand mounting
-
Product
Loop Resistance Measuring Device According to DIN EN 61557-3 (VDE 0413-3)
-
PeakTech Prüf- und Messtechnik GmbH
A loop tester which is used to test the safety of electrical systems. These device measures the impedance of the short-circuit loop between the outer conductors of a circuit, whereby the probable short-circuit current is calculated. The protection of the circuit (miniature circuit breaker) must therefore trigger at a lower current than the expected short-circuit current, in order to avoid excessive heating of the lines and thus a fire risk. The PeakTech 2715 is due to its function and its robust design almost indispensable when performing new installations, but also for general checking of electrical systems, this device is the ideal companion.
-
Product
Skid (Portable Skid Resistance Tester)
-
(also known as the British Pendulum Tester) is an essential tool for anyone with a duty to minimize the risk of accidents arising as a result of slippery roads and floor surfaces. This device is also used to investigate the cause of accidents after they have taken place.
-
Product
Earth Resistance Meter
EM 4058
-
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.
-
Product
15" XGA Industrial Monitors With Resistive Touch Control, Direct HDMI, DP, And VGA Ports
FPM-715
-
15" XGA TFT LED LCD with 70,000 backlight lifetimeDirect HDMI, DP and VGA input interfacesAnti-glare screen with tempered glassRobust system with Die-casting aluminum chassis and IP66-rated aluminum alloy front bezelLockable I/O connectorsSlim design enables easy installationOSD control buttons with 2 user-defined contrast/brightness controlsCombo RS-232 & USB interface for touchscreen functionalitySupports various mount options: panel, wall, desktop, rack or VESA arm mounting
