Resistance Standards
See Also: Resistance, Resistivity, Resistance Meters, Resistance Test
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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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Ground Resistance
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Provide accurate and reliable measurements of both ground resistance and soil resistivity for installation and troubleshooting.
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Standard Loggers
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Our standard loggers can measure up to 13 parameters. Numerous configuration options allow for maximum customization for your measurement needs. In addition to our conductivity, temperature and depth sensors, many others, including third-party sensors, can be used with our recorders. Measure salinity. Measure tide and waves. Altitude & Attitude Logger.
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Reflectance Standards
STAN Series
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Ocean Optics offers specular reflectance standards for measuring shiny surfaces such as machined metals and semiconductor materials and low-reflectivity surfaces such as anti-reflective coatings and thin film coatings. The STAN-SSH varies in reflectivity from 87%-98% over the 200-2500 nm wavelength range and is available in a version (STAN-SSH-NIST) calibrated to a NIST master standard. The NIST calibration data range is 250-2500 nm.
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Resistance Bridges
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Provides the best in measurement uncertainties for Direct Current Comparator (DCC) Resistance Bridges. Unique innovations in 6622A design and modularity means users no longer have to decide what Bridge satisfies current requirements as well as future requirements. Optional modules allow for normal, high ohms, and low ohms measurements without having to purchase multiple bridges as per competitive products.
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Earth Resistance Testers
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Precision Mastech Enterprises Co.
Specialized instruments used to measure the effectiveness of grounding systems in electrical installations.
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Radiation Resistant Resolver
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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.
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Insulation Resistance Measurement
MD 15KVR
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The digital insulation tester model MD-15KVR is Megabras' cutting edge insulation analyzer equipment and it is one of the most complete and sophisticated available in the international market. A powerful 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 15 TΩ, with 4 pre-selected test voltages, 500 V - 5 kV - 10 kV - 15 kV. Other test voltages may be selected in steps of 25 V, 100 V or 500 V.
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Solvent Resistance Tester
NRJ-100
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Shanghai Dean Electrical Co., Ltd
Executive standard: GB/T4074.4-2008/IEC60851-4; Inspection standard: JB/T4279.10-2008Used to detect the solvent resistance performance of enameled round wires and flat wires with nominal conductor diameter above 0.250mm;Application of SCM control allows for fast operation and strong anti-interference capacity;Pencil push unit would automatically lay down pencil and move ahead, lift pencil and automatically return to initial position;Used in combination with JRK-60 solvent thermostatic controller;Automatic pencil sharper can sharpen pencil tip to be 60° symmetrical to its axis;
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Product
Earth/Ground Resistance Tester
DE-5030
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Earth resistance range0~12 / 0~120 / 0~1200 Normal operation conditionsBattery voltagein range of "BATT.GOOD" Earth voltage measurementmax. AC 30V Output current3mA Response timewithin 1 sec. Insulation resistancemin. 100M / DC1000V between input terminals and case Withstand voltageAC3700V (50 / 60Hz) for 1 min. between input terminals and case Battery Check Battery1.5V x 4 Safety standardIEC 61010-1 CAT.III 300V IEC 61557, IEC61010-031
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Capacitance Standard
SCA Series
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The SCA Standard Capacitor series are highly stable cost-effective capacitance standards with low temperature coefficient, low losses and a wide range of values of 1 pF - 10,000 F. The cost and flexibility make this our most popular capacitance standard.
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Standard Digitizer
725S Family
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The 725S family is a digitizer capable of recording waveforms along with performing advanced algorithms for online digital pulse processing (DPP). Utilizing DPP Firmware, users can acquire quantitative physical parameters (Integrated Charge, Pulse Shape Discrimination with very fine time resolution, Pulse Height Analysis) as well as read out waveforms with automatic pulse identification and baseline suppression on channel basis (Zero-Length Encoding and Dynamic Acquisition Window). The wide range of DPP algorithms supported by the 725S make it a “must-have” for any type of nuclear physics application.
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Fungus Resistance Testing
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End-to-end testing helping you ensure your product's performance and resilience against fungal growth and fungus-susceptible field environments.
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Resistance Measurement
PROMET
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High-precision micro-ohm measuring systems with adjustable DC test current for determining resistances on circuit breakers or inductive loads such as transformers, for example. The high-precision ohm meters of the PROMET series are used to determine very low electrical resistances in the µΩ range. The adjustable test current of up to 600 A in combination with a four-wire measuring method delivers measurement results which meet stringent accuracy requirements. State-of-the-art power electronics coupled with a robust design guarantee excellent reliability for use as a portable device in switching stations and industrial environments. Typical applications include determining the contact resistance of switchgear devices and determining the resistance on inductive loads such as transformers.
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Earth Resistance Tester
2678
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Shenzhen Chuangxin Instruments Co., Ltd.
RK2678 series Earth Resistance Tester is used to measure the grounding resistance of the electrical equipments’ internal. It’s suitable for measuring the ground wire resistance of the various motors, electrical appliances, instruments and meters, household appliances and other equipment enclosure etc.
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AC Resistance Bridge
SIM921
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Stanford Research Systems, Inc.
The SIM921 AC Resistance Bridge is a precision, low-noise instrument designed for cryogenic thermometry applications. With excitation power below 100 aW, thermistors and other resistive samples can be measured at temperatures below 50 mK with negligible self-heating errors
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Resistivity Meters
DDR3
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Integrated Geo Instruments & Services Private Limited
The DDR 3 Resistivity Meter is a specialized version of IGIS Resistivity meters designed for use in Resistivity surveys up to about 200m depth. It utilizes rechargeable batteries as power source to energize the ground thus eliminating the necessity of using the relatively expensive dry cells.
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Frequency Standards
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Precision Test manufacturers a complete range of frequency standards. This includes rubidium and OXCO models either free running or controlled by an external reference (GPS, GLONASS, Galileo, 1pps, 5 MHz, 10 MHz, IRIG-B etc). Output frequencies typically 1 MHz, 5 MHz, 10 MHz, 10.23 MHz, 13 MHz, 100 MHz or bespoke frequency.
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Open Network Standards
ControlNet
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ControlNet is one of three open network standards (DeviceNet, ControlNet and EtherNet/IP), all of which use a common application layer, the "Common Industrial Protocol" (CIP). The Family of CIP Networks is specified and published by ODVA (Open DeviceNet Vendor Association - http://www.odva.org) and CI (ControlNet International - http://www.controlnet.org).
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Resistivity Meter for Concrete
Ohmcorr Test System™
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OhmCorr has two probes spaced 1.97" (5cm) apart which are placed in holes drilled to a depth of 3/8th" (8mm) and filled with conductive gel. The direct digital read-out of resistivity is displayed on the LCD when the control switch is activated. OhmCorr and CorMap, when used together, provide an economical and sound diagnostic system of corrosion in reinforced concrete.
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Product
Resistance Temperature Sensors
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Watlow Electric Manufacturing Company
These sensors are suited for applications where accuracy and stability are essential for proper control in applications that operate at or below 1200°F (650C).
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Capacitance Standard
GenRad 1417
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The GenRad 1417 Four-Terminal Capacitance Standard consists of a 1 F standard capacitor and two precise inductive voltage dividers used to scale the value of the 1 F capacitor up to 1 F in decade steps. This arrangement provides accuracy and stability unattainable with very high-value true capacitors.
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Insulation Resistance Measurement
MD 5060x
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The Megabras MD-5060x is a smart, microprocessor-controlled, 5kV insulation tester and analyzer. Besides the conventional measurement of insulation resistances up to 5 TW, its advanced features allow to automatically measure both the Polarization Index and Dielectric Absorption Index, thus significantly simplifying testing of transformers.
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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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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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Winding Resistance Meter
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* 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
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Electronic Resistance Store
MEMS2-4L
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The mezzanine serves as an electronic store of resistance to direct current, the value of which is set by software, through two isolated channels.
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Primary Standard Capacitors
GenRad 1404 Series
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The GenRad 1404 Series standard capacitors are the standard of choice in metrology labs, and still used today by standards bodies around the world. These capacitors have been designed as primary reference standards of capacitance with which working standards can be compared.
