Contact Resistance
opposition to the flow of heat or electricity within a connection.
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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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Product
NON CONTACT INFRARED THERMOMETER
IBL-MTX9
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International Biological Laboratories
This Digital Non Contact type Infra Red cum Contact type Thermometer with laser sensor uses temperature sensor of Thermopile 7 - 14 mm to measure temperature from -18 to 1000 Degree C in the Non Contact Infra Red Mode and -20 to 1300 Degree C in the contact mode using K type Thermometer and also in Fahrenheit scale.
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Product
Kelvin Contact Spring Probes
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We have spring probes for Kelvin contact, which best suits to use for sensitive and extremely precise test. It is used by contacting to one terminal of semiconductor by two probes. We have 0.3, 0.4 and 0.5mm pitch probe for Kelvin contact.
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Product
Contact Voltage Detectors & Phaser
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*For use on uninsulated overhead conductors*Audible and visual alert when absence of voltage is detected*Models available with different voltage ranges
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Product
DIP Header with Screw Machine Contacts
Series 625
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DIP Headers with Screw Machine Contacts. Aries offers a full line of DIP headers, available with either screw machine or coined contacts in a variety of styles. Consult Data Sheet No. 12032 for coined contacts.
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Product
Prostat Contact Voltmeter
CVM-780
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The CVM-780 contact voltmeter combines the ease of use of a digital voltmeter with the high impedance and low capacitance of a true electrostatic voltmeter, in a small, portable package.It reads the actual voltage, without interference from the electrostatic field strength. The ceramic tips of the probe allow precise measurement of values.Measurement of voltages up to 500 VDC.
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Product
High Speed Contacts
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Our quadrax, twinax, spring probe, coax, triax and fiber optic contacts can be sold seperately or configured into any of our standard connector shells sizes as well as cable assemblies and harnesses.
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Product
Advanced Powder Resistance Kit
PRK-130
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The PRK-130 is an advanced kit that includes the PRF-930 Powder Resistance Fixture for measuring the bulk resistance of powder and granulated materials. Test material is placed in the cavity between the measurement plates. Once a measurement has been made in ohms, a fixture calculation, or correction factor, converts the resistance measurement to volume resistivity in ohm-cm.
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Product
Digital Insulation Resistance Tester (CE)
MIS-D
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MULTI MEASURING INSTRUMENTS Co., Ltd.
*The big digital and bar graph LCD display with back light enabled easy observation. Especially useful when working in dark place.*Hand free and continuous measurements with custom made switch.*Safe design with built in automatic discharging function for any capacitors present in the circuit.*The voltage in the circuit or capacitor can be checked by warning lamp for safe insulation measurements.*Data hold and auto power off function.*Compact, light weight and heavy duty rugged case.
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Product
Phase Sequence Indicators (Contact Type)
887 PR
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Standard Electric Works Co., Ltd
● Indicates phase rotation. ● Indicates phase presence.● No battery required.● Phase rotation phase presence indicated on large liquid crystal display.● Small, rugged enclosure.● Color coded test leads.● Phase presence indication from as low as 40Vac to as high as 600Vac.● Fused.● Lightweight, robust and compact.● EN 61010-1 CAT III 600V EN 61010-2-032
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Product
Insulation Resistance Tester
WB2681A
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• Insulation test voltages: DC250V、DC500V、DC1000V • Range of open-circuit voltage: ±10% rated voltage • Testing time: 3~99 seconds or controlled manually
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Product
Step & Contact Meter
HT2055
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HT2055 consists in a power unit and a voltmetric unit, necessary for carrying out step and contact voltage measurements in industrial electric installations (TN systems, transformer cabinets) with a rated test current up to 50A.
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Product
Physical Contact Connectors
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Amphenol Fiber Systems International
Physical Contact (PC) connections are characterized by the physical mating of two optical fibers. Precision ceramic ferrules are typically utilized for PC connections. A PC connection is accomplished by terminating the optical fiber into a precision ceramic ferrule. Epoxy is used to affix the fiber into the ferrule. The tip of the ceramic ferrule is polished in a precise manner to ensure that light enters and exits at a known trajectory with little scattering or optical loss. Polishing the terminated ceramic ferrule is a critical process in Physical Contact fiber optic connectors.
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Product
Non Contact River Monitoring System
RiverSonde®
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The RiverSonde® is an affordable, non-contact monitoring system providing continuous surface cross-channel velocity profiles for streams, channels, and rivers. Data output from this system can be used as an index velocity in conjunction with other data sets or as model input for calculation of total water discharge (Q). It is also ideal for monitoring river movement during flood events and in disaster planning.
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Product
Spring Contact Probe
ICT
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LEENO provides a variety of choices, offering over 1,000 standard ICT probe types. The ICT probes can be customized to deliver optimum solutions to customers.
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Product
Electrical Resistivity Instrumentation
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The resistivity survey method is more than 100 years old and is one of the most commonly used geophysical exploration methods (Reynolds, 1997). It has been used to image targets from the millimeter scale to structures with dimensions of kilometers (Linderholm et al., 2008; Storz et al., 2000).
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Product
Electronic Store Of Resistances
PS8
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The module is intended for use as part of information measuring systems based on the VXI bus for software setting of resistance values with a given step along three independent channels.
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Product
K Thermocouple Magnetic Contact Probe
TP757
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Magnetic thermocouple type “K” probe for measurements on magnetic metal surfaces.
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Product
Resistance Calibration
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Process Instruments maintains fractional part-per-million accuracy with a state of the art resistance calibration facility. Specialized services include precision resistor manufacture, resistor and shunt repair, characterization of alpha and beta temperature coefficients and the determination of barometric effects on resistance values.
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Product
High Resistance Meters
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Measurements International Ltd.
Direct or Substitution Measurements, Automatic and Manual Operation, No Temperature Coefficient, Multiple Modes of Operation.
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Product
Signal, Contact, Receiver, QuadraPaddle, 5 Amp, 22-28 AWG, Crimp, 30µ" Au
610138216
Signal Contact (Receiver)
*Please note: The difference between this p/n and 610138116 is the amount of gold plating. See below.P/n 610138116- 50µ" AuP/n 610138216- 30µ" AuPrimary mating contact 610138109. (May mate with other ITA contacts, as well.)
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Product
Insulation Resistance Measurement
MI20KVe
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The MI-20KVe High-Voltage insulation tester is a truly portable device that allows the measurement of insulation resistances using test voltages up to 20 kV.
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Product
Panel-mount Type Resistivity Meter (Four-Wire Transmission, 2-channel)
HE-960RW
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HE-960RW connects resistivity sensor(ERF sereies) and measures resistivity and temperature in the sample water.This resistivity meter is ideal for such applications as the high-precision water monitoring employed at ultra-pure water plants used in semiconductor manufacturing.They utilize newly designed, high-precision, high-stability temperature measurement circuitry and a vastly improved temperature compensation function, an important element for measuring the resistivity of ultra-pure water.
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Product
Concrete Bulk Resistivity
RCON
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Giatec RCON™ is a non-destructive device for measuring the electrical resistivity of concrete specimens in the laboratory without any additional sample preparation requirements. This measurement can easily be made on the same concrete samples that are currently used for the compressive strength testing of concrete.
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Product
Corona Resistant Tester of Enamelled Wire
DPT-1000S
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Shanghai Dean Electrical Co., Ltd
·The tester is comply with the requirements of standards GB/T 1707-2008, GB/T 24122-2009, GB14711-2013, meet the requirement of standard JB/T 10930-2010;·Multiple samples can be tested at same time;·Used for testing the feature of high frequency pulse resistance (performance of Corona-resistance).
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Product
Decade Box, Resistance, 7, 1ohm to 11.11111Mohm, 1 %
72-7270
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Pocket sized resistance decade box ideal for service, prototype and experimental use.*Seven decades of resistance*28 individual slide switches*Terminals with multi way binding posts*Rugged components with ABS plastic housing case*12-month limited warranty *view Terms & Conditions for details
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Product
Insulation Resistance Testers < 1 kV
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With over twenty 1-kV models to choose from, selecting the proper Megger insulation tester can appear a bewildering task at first. Actually all the process requires is a little organization. All Megger insulation testers perform essentially the same test in fundamentally the same manner - accurately and reliably. Refinements and added features, however, separate one model from another in application and operator appeal.
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Product
Battery Resistance Tester
FBR-6100NT
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Fuzhou Fuguang Electronics Co., Ltd.
FBR-6100NT Battery Resistance Tester is a new generation handheld battery tester of FUGUANG™, which can quickly,intuitively and conveniently judge the deterioration of batteries (lead-acid batteries, lithium iron phosphate batteries and nickel-cadmium batteries, etc.). It has the characteristics of high accuracy, repeat consistency and anti-interference. It is an ideal tool for rapid battery daily check.
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Product
Resistivity Meter
Model 2180
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The unit is compact and lightweight. The basic system is 7″ wide by 2.5″ high and 12″ long. When measurements are needed below approximately 100 micro-ohm-centimeters, the basic system is piggybacked onto a second enclosure that houses a power amplifier with a current gain of ten. The combined unit measures 7″ wide by 5″ high and 12″ long. The combined unit weighs 11.5 pounds. Two short cables interconnect the two enclosures for powering the power amplifier and routing the signals to the fixture or four point probe. The front panel of the basic system includes a 32-character backlit LCD display and a set of function keys. An easy-to-use menu will allow access to user defined parameters such as sample thickness, sample volume, and calibration constants; upper and lower alarm limits, relative measurements, and several others.
