Resistance
that which keeps current from flowing freely.
See Also: Resistivity, Resistance Standards, Resistance Meters, Resistance Test, 4-wire
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Product
Three-Phase Transformer Demagnetizer
DEM60C
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After a DC current test, such as winding resistance measurement, the magnetic core of a power or instrument transformer may be magnetized (remnant magnetism). It can cause various problems such as wrong diagnostics, inaccurate measurements on a transformer, inrush current at the start-up of a power transformer, or incorrect operation of protective relays due to magnetized CT cores. The best way to eliminate this source of potential problems is to use demagnetizer on the power or instrument transformer.The DEM60C is a fully automatic test instrument which performs three-phase transformer demagnetization. Transformer magnetic core demagnetization requires the application of AC current with magnitude decreasing to zero. DEM60C provides this AC current by internally changing the polarity of a controlled DC current. During the demagnetization process, the instrument supplies the current at decreasing magnitude for each step, following a proprietary algorithm. It can demagnetize single-phase and three-phase power transformers.The instrument can be connected to all three phases of a power transformer to be demagnetized, on either the primary or the secondary side. If a user selects specific vector diagrams for different types of transformers, DEM60C will run a specific demagnetization procedure for each transformer type (i.e., single phase, delta, wye/star, zig-zag.) without switching the test leads.DEM60C enables safe and efficient power transformer demagnetization. The instrument automatically regulates the injection of current and discharging energy from the inductance. During and after the operation, an intrinsically safe discharge circuit with an indicator rapidly dissipates the stored magnetic energy. The discharging circuit is independent of the power supply, which improves its reliability in case of loss of power.Test currents of up to 60 A DC enable efficient demagnetization of even the largest power transformers. Using a DV Win software, it is possible to control DEM60C externally.
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Product
In-Head RTD Temperature Transmitter
SEM203/P
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The RTD in-head mounted temperature transmitter connects to any standard pt100 resistance sensor and converts the linearised temperature to a (4 to 20) mA signal.
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Product
Alternate 2.58 (73.00) - 6.00 (170.00) High Performance Lead Free Probe
LFRE-25Z-6
ICT/FCT Probe
Current Rating (Amps): 8Average Probe Resistance (mOhm): 8Test Center (mil): 100Test Center (mm): 2.54Full Travel (mil): 250Full Travel (mm): 6.35Recommended Travel (mil): 167Recommended Travel (mm): 4.24Mechanical Life (no of cycles): 1,000,000Overall Length (mil): 1,300Overall Length (mm): 33.02
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Product
GAOTek Portable H/L Voltage Clamp Current Leaker
GT00YA00ZX
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The GAOTek Portable H/L Voltage Clamp Current Leaker measures high voltage current with a 12.5 in (32 cm) insulating rod, adopting the latest CT technology and integrating mask digital technology. This instrument provides high precision, reliability, and stability with its integrated design between transducer clamp and domain. This leaker can be used to measure any wire with or without the insulation layer where the voltage is below 10 kV. The insulating rod is portable, moisture resistant, heat resistant, shock resistant, and insulating. It provides additional functionalities such as online current testing, peak and data holding, data storage, detection of high and low current in primary and secondary circuits separately, and provision of suitable calculations to conclude change in high and low pressure.
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Product
Ultra High 2.84 (81.00) - 10.00 (283.00) High Performance Bias Ball Probe
POGO-1Z1-10
ICT/FCT Probe
Current Rating (Amps): 6Average Probe Resistance (mOhm): 10Test Center (mil): 75Test Center (mm): 1.91Full Travel (mil): 250Full Travel (mm): 6.35Recommended Travel (mil): 167Recommended Travel (mm): 4.24Mechanical Life (no of cycles): 1,000,000Overall Length (mil): 1,300Overall Length (mm): 33.02
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Product
Tilt Position Sensors
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Available with any measurement angle between 15 and 160 the P603 tilt sensor operates a gravity driven, oil damped pendulum with a very low settle time and durable housing. Our tilt sensor has proved popular in marine applications because like our linear and rotary sensors we have used highly durable and corrosion resistant materials.We also offer the S623 which is waterproof sealed for continual submersion to IP68 350bar, 5000psi, 3500msw
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Product
Harness Design and Manufacture
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When designing an underwater cable harness, there are some factors which need to be considered, and we have produced the following list as a guide for customer information:Component considerations:- Electrical requirements- Mechanical considerations- Quality requirements- Reliability- Design redundancy (contact count)- Connector selection (type and form)- Locking requirements- Backpotting requirements- Waterblocking in moldings- Cable specification- Cable jacket material and compatibility with elastomers- Abrasion resistance- Stiffness profile at termination- Connector format (straight or right angle)- Molding format (straight or at an angle)- Clearance allowance for molding and cable routing- Elastomer compatibility (eg oil filled units)- Metalwork selection re: corrosion and cathodic delamination- Surface finish for metalwork as appropriateOperational considerations:- Operating depth profile (not just max. depth)- Tensile loads- Torsional loads- Bending loads- Bend control requirements (to limit bending at termination)- Deployment and recovery loads- Dynamic loading-Flow turbulence effects.
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Product
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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Product
PCI High Density Potentiometer Card 9-Channel, 8-Bit, 0 To 255 Ohm
50-296A-121-9/8
Programmable Potentiometer
The 50-296A series are Programmable Potentiometer versions of the 50-295A Programmable Resistor cards with up to 9-channels of 8-bit resolution resistor chains in a single PCI slot. The flexible architecture allows the card to also be supplied as 12-bit, 16-bit or 24-bit resolution versions for applications requiring finer resolution, greater resistance range or higher channel count. The card is ideal for simulating the sensors for control and management systems under test, allowing the user to verify system response in design verification or manufacturing test applications.
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Product
Conversion Devices and Adapters
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Conversion devices and adapters fulfill several roles. For example, you can use them to convert an output signal to a signal type that can be measured by a data logger, to adjust resistive bridge measurements, or to build distributed measurement networks.
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Product
PCI High Density Resistor Card 10-Channel, 16-Bit, 0 To 65k Ohm
50-295A-121-10/16
Programmable Resistor Module
The 50-295A is a Programmable Resistor card with up to 18-channels of 8-bit resolution resistor chains in a single PCI slot. The flexible architecture allows the card to also be supplied as 12-bit, 16-bit or 24-bit resolution versions for applications requiring finer resolution, greater resistance range or higher channel count. The card is ideal for simulating the sensors for control and management systems under test, allowing the user to verify system response in design verification or manufacturing test applications.
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Product
F-S General Purpose Probes
General Purpose Probe
Current Rating (Amps): 5Average DC Resistance lower than (mOhm): 30Test Center (mil): 125Test Center (mm): 3.18Full Travel (mil): 100Full Travel (mm): 2.54Recommended Travel (mil): 66Recommended Travel (mm): 1.68Overall Length (mil): 780Overall Length (mm): 19.81Rec. Mounting Hole Size (mil): 86Rec. Mounting Hole Size (mm): 2.18Recommended Drill Size: #44
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Product
Standard 0.61 (17.00) - 2.80 (79.00) General Purpose Probe
HPA-0B
General Purpose Probe
Current Rating (Amps): 3Average Probe Resistance (mOhm): 35Test Center (mil): 50Test Center (mm): 1.27Full Travel (mil): 100Full Travel (mm): 2.54Recommended Travel (mil): 67Recommended Travel (mm): 1.70Mechanical Life (no of cyles): 1,000,000Overall Length (mil): 635Overall Length (mm): 16.13
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Product
Ultra High 4.09 (116.00) - 10.00 (283.00) General Purpose Probe
EPA-2G40-2
General Purpose Probe
Current Rating (Amps): 5Average Probe Resistance (mOhm): 35Test Center (mil): 100Test Center (mm): 2.54Full Travel (mil): 160Full Travel (mm): 4.06Recommended Travel (mil): 107Recommended Travel (mm): 2.72Mechanical Life (no of cyles): 2,000,000Overall Length (mil): 970Overall Length (mm): 24.64
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Product
LXI Low Thermal EMF Matrix 1-pole 42x33
60-510-002
Matrix Switch Module
The 60-510 is a high density 1-pole matrix module controlled via LXI. It has excellent thermal stability and substantially reduced thermal EMF figures when compared to a conventional switching matrix. Typical applications include signal routing in ATE, selecting thermocouple inputs, switching amplifier gain circuits and high accuracy DC micro-volt measurements. Ruthenium reed switches are used because of their good low level switching capability. They also have a very long life with excellent contact resistance stability, minimal wetting current and low thermal offset.
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Product
Light 0.60 (17.00) - 2.00 (57.00) High Performance Lead Free Probe
LFRE-72T20-2
ICT/FCT Probe
Current Rating (Amps): 3Average Probe Resistance (mOhm): 15Test Center (mil): 50Test Center (mm): 1.27Full Travel (mil): 250Full Travel (mm): 6.35Recommended Travel (mil): 167Recommended Travel (mm): 4.24Mechanical Life (no of cycles): 500,000Overall Length (mil): 1,700Overall Length (mm): 43.18
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Product
Standard 1.53 (43.00) - 4.00 (113.00) High Performance Lead Free Probe
LFRE-72J-4
ICT/FCT Probe
Current Rating (Amps): 3Average Probe Resistance (mOhm): 15Test Center (mil): 50Test Center (mm): 1.27Full Travel (mil): 250Full Travel (mm): 6.35Recommended Travel (mil): 167Recommended Travel (mm): 4.24Mechanical Life (no of cycles): 500,000Overall Length (mil): 1,700Overall Length (mm): 43.18
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Product
Paper Softness Tester ZRD-T1
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The ZRD-T1 Paper Softness Tester is a device designed to objectively measure the softness of paper products, such as tissues, toilet paper, or specialty papers. Softness is a complex tactile property influenced by factors like surface smoothness, flexibility, and bulk compressibility. It is widely used in industries such as tissue manufacturing, hygiene product development, textiles, and packaging to ensure compliance with quality standards and end-user comfort requirements. This test instrument conforms to many national and international standards: ASTM D2923: Standard Test Method for Rigidity of Paper – Measures bending resistance to determine stiffness. ASTM D6828: Standard Test Method for Stiffness of Nonwoven Fabrics – Evaluates drape and flexibility in materials like medical textiles or wipes. TAPPI T498: Bending Resistance of Paper (Gurley Method) – Quantifies resistance to bending forces, inversely related to softness. GB/T 8942: Chinese Standard for Softness Testing of Household Paper – Aligns with consumer expectations for tissue and toilet paper tactile quality. ISO 12625-9: Softness Evaluation of Tissue Products (optional add-on).
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Product
Traction Battery Short Circuit Test Machine
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Guangdong Bell Experiment Equipment Co.,Ltd
Traction Battery Short Circuit Test Machine Relevant standards requirement:Single Storage Cell Safety Test6.2.4 Short circuitCharge the single storage cellaccording to 6.1.3 standardThe cellis to be short-circuited by connecting the positive and negative terminal with a external resistance of less than 5mΩ for 10 minObserve for 1HBattery module safety test6.3.4 Short circuitCharge the battery module according to standard 6.1.4The battery module is to be short-circuited by connecting the positive and negative terminal with a external resistance of less than 5mΩfor 10 minObserve for 1H
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Product
High 2.90 (82.20) - 12.60 (357.00) Switch Probe
TSP100-C100-3
Switch Probe
Current Rating (Amps): 5Average DC Resistance lower than (mOhm): 20Test Center (mil): 100Test Center (mm): 2.54Full Travel (mil): 197Full Travel (mm): 5.00Recommended Travel (mil): 157Recommended Travel (mm): 4.00Overall Length (mil): 1,990Overall Length (mm): 50.60Switch Point (mil): 59Switch Point (mm): 1.50
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Product
PCI 18 Channel Precision Resistor Card
50-297-001
Precision Resistor Module
The 50-297 provides a simple solution for applications requiring accurate simulation of resistive sensors. The 50-297 is available in a variety of resistance ranges and resolution capabilities that meet the needs of most functional test systems.
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Product
Professional Floor Certification Kit
PFC-252
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The PFC-252 includes Prostat's PRS-812 Resistance System Set with modified 5 pound conductive rubber electrodes and Prostat’s Cable Spacers for exact measurements. The PRS-812 wide range resistance system can take measurements at 10 and 100 volts with accuracy within ±5%. Also included is the PFK-100 Field Meter Set. The PFK-100 set includes Prostat's unique PFM-711A dual range field meter, CPM-720A charged plate monitor assembly and PCS-730 ±1 kv charging source. With this instrument set you can measure electrostatic fields, analyze ionizer performance and assess the voltage generation of materials, equipment and personnel.
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Product
10A DIGITAL MICRO-OHMMETER
MPK-2000e
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The MPK-2000e digital very low resistance ohmmeter is a portable, microprocessor controlled instrument used to accurately measure resistances of switches and circuit breaker contacts, transformer and motor windings, wire and cable samples, joints in busbars, etc., using test currents from 1mA up to 10A. It uses the Kelvin-type, four-terminals measurement principle, thus eliminating errors caused by lead and contact resistances.
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Product
Portable Multifunction Calibrator
M143
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Clarke-Hess Communications Research
The M143 Multifunction calibrator is a cost saving solution for calibration of electric meters with up to 1000 V and 20 A. It offersa basic accuracy of 0.01% in DC voltage for calibration of 3 and 4 digit multimeters. The resistance function is covered byeight fix resistors in range from 10 to 100 M. The calibrator offers TC temperature sensor simulation. It can be deliveredoptionally as well with RTD temperature sensor simulator. Thanks to its small dimensions and low weight the unit can be usedeasily for field calibration work.
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Product
Super 3.90 (111.00) - 16.00 (454.00) High Performance Lead Free Probe
LFRE-25L36-16
ICT/FCT Probe
Current Rating (Amps): 8Average Probe Resistance (mOhm): 8Test Center (mil): 100Test Center (mm): 2.54Full Travel (mil): 250Full Travel (mm): 6.35Recommended Travel (mil): 167Recommended Travel (mm): 4.24Mechanical Life (no of cycles): 1,000,000Overall Length (mil): 1,300Overall Length (mm): 33.02
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Product
Falling Dart Impact Tester
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Falling dart impact tester can be used for the determination of impact resistance of packaging materials such as plastic films, laminates by a free falling dart from a certain height. This instrument is designed according to ASTM D1709 with method A & B.
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Product
PXI/PXIe High Density Precision Resistor Module
42-297A-034
Precision Resistor Module
The 40-297A-034 (PXI) and the 42-297A-034 (PXIe) are 9-channel programmable resistors with a range of 2 Ω to 102 kΩ. They are part of the 40/42-297A series of high density precision resistor modules and provide a simple solution for applications requiring accurate simulation of resistive sensors.
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Product
Multifunction Tester
EASYTEST
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EASYTEST carries out tests on electric systems in compliance with IEC/EN 61557-1 and therefore measurements of continuity of the protection cable, insulation resistance (with calculation of PI and DAR), overall earth resistance, RCDs type A and AC tripping time and current, line / fault impedance with calculation of prospective short circuit / fault current, phase sequence and conformity.
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Product
PXI/PXIe High Density Precision Resistor Module, 6-Channel
40-297A-040
Programmable Resistor Module
The 40-297A-040 (PXI) and the 42-297A-040 (PXIe) are 6-channel programmable resistors with a range of 2.5 Ω to 102 kΩ. They are part of the 40/42-297A series of high density precision resistor modules and provide a simple solution for applications requiring accurate simulation of resistive sensors.
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Product
Precision RTD Simulator
RTD Series
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The RTD Series Precision RTD (Resistance Temperature Detector) Simulator provides a very broad-range of absolute resistance values that replace RTD's and thermocouples. Thermocouples present a resistance that depends on the temperature. The RTD simulator effectively replaces an RTD to test, analyze, and calibrate RTD measuring systems. The RTD Series simulator is a precision resistance source with excellent characteristics of accuracy, stability, temperature coefcient, and power coefcient. All these features serve to make it a laboratory resistance standard, exceeded in performance only by stand-alone standard resistors. The special design of the RTD Series provides absolute accuracy, and requires no zero resistance subtraction from any setting Special design of the RTD virtually eliminate zero resistance and switch contact variations, providing the specified absolute accuracy over the entire range.





























