Resistance Calibrators
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Transformer Winding Resistance Testers / TRT ? 2
TRT-2
UDEYRAJ ELECTRICALS PRIVATE LIMITED
Fast measurement: Test current 0.02A to 2A DC, Digital display of resistance and test current.
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Decade Box, Calibrated W/Data, Resistance, 7, 1ohm to 11.11111Mohm, 1 %
72-7270 CAL D
The 72-7270 CAL D from Tenma is a resistance decade box. It is ideal for service, prototype and experimental use. This useful tool may be set resistance value from 1 to 11,111,110 ohm in one ohm increments. The decade accuracy is ±1% resistors used throughout. It has weight of 320g/0.70lb and dimension 14.7cm × 11.7cm × 5.5cm (5.79" × 4.61" × 2.16"). It is typically used in general applications, troubleshooting, maintenance, education and vocational training, production line testing, radio and TV services, working standards, research design & develop, physics laboratory work.
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Insulation Resistance Testers
Are designed to help prevent hazards such as electric shock and short-circuits caused when the insulation in electrical devices, parts, and equipment used in industrial plants, buildings, and other settings degrades over long periods of use.
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Economy Mechanical Calibration Kit, DC To 3 GHz, Type-F, 75 Ohm
85039B
The Keysight 85039B calibration kit, with option M0F, contains male and female type-F open, short, and load standards. This calibration kit works with all 75 ohm network analyzers and test sets for measurement of devices with 75 ohm type-F connectors. The kit also includes type-N to type-F adapters. More economical versions of this kit are available by ordering option 00F for the female standards only, or option 00M for the male standards only. This kit is specified from dc to 3 GHz.
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Zero Resistance Ammeters
Current sinks are electronic circuits which can sink electric power in a controlled manner, thus acting as controlled loads. Our current sinks are designed as four - quadrant current sinks which can feed and sink currents in both polarities (also disregarding the polarity of the resulting voltage).
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Earth Resistance Testers
Earth Resistance Tester is widely applied in ground resistance measurement, loop resistance measurement in fields such as electric power, telecommunications, meteorology, oil field, architecture and industrial electrical equipment, etc. When measuring ground system with loop, there is no need to disconnect the ground wire without auxiliary electrode, which means safer and faster.
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Transformer Resistance Testing
Weshine Electric Manufacturing Co., Ltd
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 WESHINE Transformer Ohmmeter (VS-3110 series) of transformer test equipment) then it’s likely to fail before reaching its maximum operating life.
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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.
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Insulation Resistance Tester
250-1000V
Wuhan Fanke Transformer Manufacture Co., LTD
Professional Insulation Resistance Tester, 250-1000V
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IEC60529 IPX1/2 Rain Resistance Tester
IPX12A-600
Shenzhen Chuangxin Instruments Co., Ltd.
The IEC60529 IPX1/2 Rain Resistance Tester is designed according to the <> of IEC60529 standard, GB7000.1 and GB4208-2008. IEC60529 IPX1/2 Rain Resistance Tester is mainly used to simulate the product under the condition of the rain climate to test the products’ physical properties.
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3 Wire (Analogue) Earth Resistance Tester
2705 ER
Standard Electric Works Co., Ltd
● High quality Taut Band movement.● Capable of measuring earth resistance and earth voltage.● 2mA measuring current permits the testing of earth resistance without tripping earth leakage current breakers in the circuit under test.● The test leads are supplied as standard accessories for simplified two-wire measuring system.● Battery operated.● Battery check function.● Calibration performed with supplied test leads.
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4-Probe Resistivity and Resistance Tester
HS-MPRT-5
t used for measuring resistivity of silicon rods and wafers, and sheet resistance of diffused layers, epitaxial layers, LTO conductive films and conductive rubbers, etc.
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Insulation Resistance Measurement
MI15KVe
The MI-15KVe High-Voltage insulation tester is a truly portable device that allows the measurement of insulation resistances using test voltages up to 15kV.
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Multiple High Resistance Standard
MHS
*1 MEGOHM TO 1 TERAOHM*FULLY GUARDED*HIGH IMMUNITY FROM AMBIENT TEMPERATURE CHANGES*TRANSPORTABLEOhm-Labs' new Multiple High Resistance Standard maintains state-of-the-art resistance at levels above 1 megohm.
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Panel-mount Type Resistivity Meter (Four-Wire Transmission)
HE-480R
HE-480R connects resistivity sensor(ERF sereies) and measures resistivity and temperature in the sample water.The feature is the high-precision temperature compensation function.Its high-performance temperature compensation makes it ideal for sequential monitoring of ultra-pure water used in manufacturing processes in the semiconductor field, and many other fields, including the areas of electrical goods, foods and medicines.
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Loading Rheostats (Resistive Load)
Supreme Instrument Laboratories
Loading Rheostat is a device specially designed to meet the requirements of Engineering Laboratories, Electrical Test Rooms and Industries. It is used for loading transformers, power generators, supply mains etc. neatly and efficiently. It can also be used advantageously for regulating current and adjusting voltage besides its application for calibrating meters and thus eliminating the need for graded rheostats.
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Earth Resistance & Resistivity Meter (for 50Hz mains)
MRU-120
* earth resistance measurment with 3-pole,4-pole method, * earth resistance measurement without disconnecting measured earths (using clamp), * continuity of equipotential bondings and protecting conductors * two clamps earth resistance measurement without auxiliary test probs, * earth resistivity measurement,
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Silicon Resistivity, PN type & Alarm Tester
HS-PSRT
It use Four Probe to test the resistivity and P/N type of wafers、ingots and all type of silicon materials.It can be used by Solar and Semiconductor industry.
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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.
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Automatic Calibration Function oH Meter
AH-151
The pH meter AH-151 with automatic calibration function performs pH measurement by automatically cleaning the electrode with cleaning solution and performing calibration with standard solution, making it possible to drastically reduce maintenance work. In addition, by spraying the calibration solution, the consumption of calibration solution has been reduced. The spray amount of the cleaning solution can also be adjusted according to the condition of contamination, which contributes to cost reductions. With periodic cleaning and calibration, stable and highly reliable pH measurements are possible.
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XR Resistive Reactive Load Banks
Mosebach Manufacturing Company
Mosebach’s XR series load bank offers you a range of options for resistive reactive loads in both lower voltages of 480 and 600 or MV at 4160 and higher. Outdoor rated user friendly for years of use.
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Speed-O-Calibrator
16470
The Speed-O-Calibrator consists of two sections, control box and drive unit. The control box is stored inside the drive unit for easy portability. The control box weighs less than 6 lbs and is used in the cab of a locomotive to control the speed of the Axle Alternator Drive Unit. The Drive Unit drives the Axle Alternator at various speeds while the user verifies that the correct speed is displayed in the cab. The test system provides a complete test of the speedometer system, including all types and paddle lengths of Axle Alternators.
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Frequency Extension Calibration Kits
FEK
Farran’s FEK-xx-0001 calibration kit provides accurate calibration of the Vector Network Analyzer (VNA). It is compatible with TRL and SOLT calibration techniques and allows for a full 12-term port calibration.
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IDevice Calibrated Measurement Microphone
IMM-6
The Dayton Audio IMM-6 is a professional-quality measurement and recording microphone that is designed to work with the entire suite of Apple “iDevices” – iPad, iPhone, and iPod. The rugged construction and compact size make it the perfect companion for audio professionals who must work on-location performing acoustic analysis, monitoring audio levels, or recording. Each IMM-6 is individually hand-calibrated using a laboratory-standard measurement microphone, for consistent, repeatable measurements that match the level of precision previously offered only by expensive stand-alone microphones.
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On-Site Calibration Services
Labsphere offers on-site spectral radiance calibration services for HELIOS and other uniform source systems.
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ECPR System (Electrically Calibrated Pyroelectric Radiometer)
Rs-5900
Developed in conjunction with NIST, the Rs-5900 ECPR is a ±1% absolute accuracy radiometric transfer standard for the visible to near-IR (0.25-2.0µm), with the RsIR Option extending the ±1% accuracy to >20µm. The RsP-590 Pyroelectric Probe requires no cooling and maintains ±1% accuracy from 1 µW to 100 mW. The ECPR uses an auto-nulling, electrical substitution technique that allows the instrument to be referenced against NIST electrical standards, insuring maximum accuracy and precision. Unlike most electrically calibrated radiometers, there is a direct correlation between electrical and optical heating because the same material serves as both the optical absorber and electrical heating element.
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Laser Interferometers & Calibration Systems
Keysight Technologies is a world leader in the design and manufacture of laser interferometry systems, advanced electronic measurement systems, high-precision optical components, complex monolithic optics (CMOs), and opto-electronic systems design for the most demanding metrology applications. Keysight systems offer high precision in a wide dynamic range, the ability to simultaneously measure a position with multiple degrees of freedom, and the highest accuracy available in both air and vacuum systems.
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Surface Insulation Resistance Testing
AutoSIR2™
One AutoSIR chassis can hold between 1 to 16 measurement cards and can monitor up to 256 x 2-point test patterns or 78 x 5-point test patterns, or 32 x 9-point test patterns at selectable intervals from minutes to days. Each channel is current limited (1 M Ω), ensuring that dendrites are preserved for failure analysis. The frequent monitoring capability provides a full picture of the electrochemical reactions taking place on a circuit assembly, and provides early trend analysis enabling tests to be curtailed, thus saving considerable test time and money.
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Portable Calibrator
MC141
Voltage range from 0 to 750 V DC/AC with uncertainty 0.01% Current range from 0 to 2 A DC/AC with uncertainty 0.02 % Calibrated sinusoidal output signal DC - 1kHz. Set standard resistors from 10 Ohm to 100 MOhm in decade values with uncertainty 0.02 %. TC temperature sensor simulation R, S, B, J, T, E, K, N in range from -250 oC to 1850 oC
