Zero Resistance Ammeters
measure galvanic current and resistance. Also known as: ZRA
See Also: Ammeters, Nanoammeters, Picoammeters
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Product
Circuit Breaker Contact Resistance Meters
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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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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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Earth Resistance Testers
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Is a soil resistance measuring instrument. It is used for sizing and projecting grounding grids.
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Product
TRA-300 LED Thermal Resistance Structure Analyzer
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Hangzhou Everfine Photo-E-Info Co., LTD
The TRA-300 accurately measures the thermal resistance, junction temperature, optical power, voltage, current and other parameters of LED packaging products.The heating and cooling curves of LED can also be obtained, and the integral and differential thermal structure functions can be obtained by establishing the finite element model.Through the structural function analysis of the TRA-300 special software, the fine thermal resistance structure of the LED (from the chip to the thermal resistance value of each package structure) can be obtained, so as to objectively evaluate the heat dissipation quality and thermal management level of the LED package products, and provide the best verification for the heat dissipation design of the LED.
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Electrical Resistance (ER) Monitoring
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The electrical resistance (ER) technique is an "on-line" method of monitoring the rate of corrosion and the extent of total metal loss for any metallic equipment or structure. The ER technique measures the effects of both the electrochemical and the mechanical components of corrosion such as erosion or cavitation. It is the only on-line, instrumented technique applicable to virtually all types of corrosive environments.
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Product
PE-, Insulation Resistance, HV- and Function Tester
GLP1-g
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GLP1-g testers are ideally suited for use in production, laboratory, test field, quality management, automation and many more applications. Thanks to the individual combination of functions you are able to reach your aims quickly, reliably and cost-effectively.
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Product
Three-Phase Transformer Winding Resistance Meters
TWA Advanced Series
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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.
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AC resistance bridges
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Designed for precise, accurate, low noise, low excitation power AC resistance measurements. Measure resistance materials in cryogenic environments.
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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
Resistance Wire Bonding
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Electronic Systems of Wisconsin, Inc.
ESW's Resistance Wire Bonding System comes equipped with the latest features the market has to offer. Our system is capable of bonding armatures, stators or coils. The on-screen display in our bonder makes it easy to read, track, and record your bonding data. If desired, ESW offers complete electrical testing of the part prior to the bonding sequence as well. This ensures only good parts that have been electrically tested are processed through bonding. It is our duty to make sure you never have to worry about losing important information again. Our Sales and Engineering staff will work closely with you to make sure that a bonding systems will meet your needs. See the slideshow below to see some of our Resistance Wire Bonding Testers.
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Digital Surface Resistance Meter
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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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Product
4 2/3 Digital Resistance Meter
CS2-RS
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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.
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Non-Contact Resistance Online Tester
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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.
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Product
Decade Resistance Box
TEK903
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The TEK903 is a very reliable decade resistance box with high quality rotary switches providing in-line readouts. Ideal for laboratory, educational and calibration applications. The extra terminal forms an accurate potential divider.
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Product
Portable Zero Air System
Model 751H
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Teledyne Advanced Pollution Instrumentation
The Model 751H is a portable, fully self-contained source of high purity zero air for dilution calibrators. It is ideal for use with sensitive analyzers in ambient background and trace level applications. Packaged in a wheeled, high density plastic case, the Model 751H provides ultra-high purity output with a warm-up time of 30 minutes.
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2-Way Resistive Power Dividers DC To 40 GHz
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Pulsar Microwave manufactures resistive dividers from DC to 40 GHz. They have a rated input power of one half watt maximum. VSWR of 1.5:1 or better maintained throughout band at all ports. Resistive dividers can be fitted with SMA male or female connectors and are available in three outline packages.
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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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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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4-Way Resistive Power Dividers DC To 27 GHz
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Pulsar Microwave manufactures resistive dividers from DC to 27 GHz. They have a rated input power of one half watt maximum. VSWR of 1.5:1 or better maintained throughout band at all ports. Resistive dividers can be fitted with SMA male or female connectors and are available in three outline packages.
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Setaflash ‘Series 8’ Active-Cool (Corrosion Resisting)
6910
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The Elcometer 6910 Setaflash ‘Series 8’ Active-Cool (Corrosion Resisting) offers the same feature as the Active Cool Closed Cup Tester but comes with a corrosion resisting insert in the cup for testing corrosive samples.
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Resistance Grounded Systems (HRG/LRG)
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Neutral Grounding Resistors (NGRs) are used to limit the maximum ground-fault current. Restriction of fault current lowers hazards and reduces damage done to equipment. High Resistance Grounding (HRG) systems are often used on industrial and critical power applications to maintain system uptime during a first ground fault. HRG systems are also used in tripping applications to help control touch potential on portable loads and improve personnel safety.
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Handheld Digital Multimeter, 4 digit, Water and Dust Resistant
U1271A
Digital Multimeter
Feature sets that meet traditional industrial requirements and improve productivity and safety Improved accuracy and resolution to meet traditional industrial requirements (30,000 counts resolution with 0.7% for ACV accuracy)Intelligent features to improve productivity and safety (selectable Low Pass Filter LPF and quick signal type identification Qik-V)Better grip Both visual and audible continuity indication in noisy environments Easy access to fuse for simplified maintenance Easy connectivity to PC and internal memory (up to 200) for data logging Large rotary switch and buttons that are easy to operate Dust and water resistant casing (IP 54 compliant)Compatible with U1177A/U1117A IR-Bluetooth adapter for remote monitoring & datalogging Altitude: 3000 meters
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UV Weather Resistance Test Chamber
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This series is applicable for the sunlight resistant test of nonmetallic materials and aging test of artificial light source.
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Product
1μΩ-4kΩ AC Milliohmmeter Low Resistance Tester
TH2521
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Shenzhen Chuangxin Instruments Co., Ltd.
TH2521 AC Milliohmmeter is a high-performance and intelligent tester widely used to test contact resistance, internal resistance and battery voltage. The application of constant current source with 1kHz frequency can greatly eliminate the potential error caused by thermoelectricity on DUT. This meter has the function to automatically detect contact failures on test cable. At the range of 30mΩ, basic R resolution can reach 1μΩ. It is applicable for transformer, inductance coil copper resistance, relay contact resistance, switch, connector contact resistance, wire resistance, PCB line and via reistance dan metal defect detection, etc. In the mean time, signals, such as HIGH, LOW, PASS, can be output through HANDLER interface, thus it is very convenient to be used in automatic production line.
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Low Resistance Or Continuity Testing
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From Megger, these highly accurate, easy to operate instruments measure resistance with resolution as fine as 0.1 micro-ohm. Digital micro-ohmeters and DLROs measure contact resistance of switch and circuit breakers, aircraft frame bonds, and rail and pipeline bonds just to name a few of the applications. Megger has models available for testing using test currents from 0.5 mA to 200 amps covering a multitude of applications that require precise low-resistance measurements.
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Battery Internal Resistance Tester
HDGC-3915
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HD Power Test Equipment Co.ltd
Battery Internal Resistance Tester is designed using the advanced AC discharge measurement method to test accurately voltage and resistance of battery. It is strictly designed to evaluate battery performance, state and life-time, which maintain all stationary power systems including Uninterruptible Power System. Battery Internal Resistance Tester can proceed the measurement in a group and in a single section of battery. With accurate testing of resistance and voltage, it gives an indication of battery capacity and technical status. The measurement data can be read on the instrument display directly. And it can also be uploaded to PC simply by using the USB drive. With the analyzing software, you could not only keep a record of the testing result but also have detailed analyzing for the status of batteries in different testing conditions.
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1kV, 25 MHz High Voltage Differential Probe Without Tip Accessories and with Auto Zero Disconnect
HVD3102A-NOACC
Differential Probe
The HVD3000A series of high voltage differential probes cover the fullest range of applications, from 120/240 V switch-mode power supplies through 600 V class and 5 kV electrical apparatus. The table below provides a list of recommended probe models based on specific device under test applications.
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Trailer Light Tester with Ammeter
Checkmate 1200-A
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An improved version of the Checkmate 1200, this reasonably-priced tester comes equipped with a 0-to-20-amp ammeter. It's capable of testing SAE trailers or RV's with electric brakes.
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