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Resistance

that which keeps current from flowing freely.

See Also: Resistivity, Resistance Standards, Resistance Meters, Resistance Test, 4-wire


Showing results: 1576 - 1590 of 2660 items found.

  • Ground Fault Protection Monitors

    Accumetrics Associates, Inc.

    The Earth Fault Resistance Monitor (EFREM) and the Rotor Health Monitor (RHM) provide wireless rotor ground fault and temperature monitoring for generators and motors. The systems replace older slip ring contact ground fault detectors on any synchronous generator or motor.

  • High-Resolution ER Data Logger

    MS4500E - Metal Samples Company

    The MS4500E is a hand-held, battery-powered, corrosion meter capable of measuring and storing data from all types of electrical resistance (ER) corrosion probes. The instrument is light weight, microprocessor-based, and features a simple, menu-driven interface using a keypad and a backlit graphical LCD display.

  • Analogue (1kV up) H.V. Insulation Tester

    6201 IN (Ranges: 5kV, 10kV) - Standard Electric Works Co., Ltd

    ● Microprocessor-controlled.● High quality Taut Band movement.● Two insulation test voltages.● Insulation resistance, auto ranging on all ranges.● Low Battery LED indication.● Beeper warning of external voltage.● Fully protected : crow bar.● Housed in carry case.

  • Multifunctional testers

    MI 3152 EurotestXC - Metrel d.d.

    MI 3152 EurotestXC is an instrument from the new generation of Metrel’s multifunctional measuring instruments. The already well known functions like complete installation safety testing according to IEC/EN 61557 and AUTO SEQUENCE testing of TN, TT and IT earthing systems are managed by a completely new user interface based on large colour touch screen display. A wide range of functions is included: from on-line voltage monitoring, phase sequence testing, varistor testing, earth resistance measurement, illuminance measurement and TRMS current measurement up to RCD tests, line and loop impedance tests, specific earth resistance measurements as well as ISFL measurements and the IMD tests.

  • Relaying Current Transformer Analyser

    Eltel Industries

    *Measures Ratio, Excitation Characteristics, Polarity, Winding Resistance, Remanance, and Insulation Resistance of secondary winding. * Determines Composite Error. * Used to test un-mounted CTs or CTs that are mounted but isolated inside the power system equipment. * Conducts a whole series of tests automatically, thus speeding up the time to commission CTs and relaying systems. * Battery powered test set - light weight & fully portable. * Provides a graphical presentation of the CT excitation characteristics. * Determines the IEC 10/50 knee point and the point of maximum permeability, ANSI 45 degree Slope Point. * Detects shorted turns or insulation problems within the test CT, thus avoiding commissioning of faulty equipment.

  • General Purpose Pressure Transducer and Transmitter

    P55 - Validyne Engineering

    The robust P55 pressure transducer provides cost-effective reliability for severe test environments. With extreme resistance to shock and vibration, the P55 pressure transducer delivers the same high-level performance expected from more delicate differential pressure transducers and pressure transmitters. With variable reluctance sensing technology, the P55 pressure transducer delivers fast dynamic response, high resistance to vibration and superior signal stability through ambient temperature change for a wide variety of low-pressure to high-pressure measurements. The P55 pressure transducer will accept both liquids and gases directly at the sensing diaphragm and there are no internal isolation fluids to slow the sensor response or cause excessive temperature drift errors.

  • Resistors

    Vishay Intertechnology, Inc.

    A passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses. High-power resistors that can dissipate many watts of electrical power as heat may be used as part of motor controls, in power distribution systems, or as test loads for generators. Fixed resistors have resistances that only change slightly with temperature, time or operating voltage. Variable resistors can be used to adjust circuit elements (such as a volume control or a lamp dimmer), or as sensing devices for heat, light, humidity, force, or chemical activity.

  • Test Chambers

    ALP Technology

    We offer such professional products: salt spray test chamber, sulfur dioxide test chamber, high-low temperature test chamber, temperature shock test chamber, constant temperature-humidity test chamber, UV weather resistance test chamber, xenon lamp weather resistance test chamber, air ventilation climatic test chamber, sand-dust test chamber, box rain test chamber, pipe rain test device, drip box, ozone climatic test chamber, mould test chamber, precise drying test chamber, vacuum test chamber, walk-in test chamber, medicine stability test chamber and vibrating table, etc.

  • Decade Capacitor

    1419 Series - IET Labs

    GenRad 1419-A and GenRad 1419-B (Polystyrene) Owing to its very low dielectric absorption, the GenRad 1419A 3 Decade 1000 pF/step & 1419B 4 Decade 100 pF/step Polystyrene Decade Capacitors are particularly useful in research and development work on computer and integrator circuits and on low-level amplifiers. Its constancy of capacitance and dissipation factor as a function of frequency also makes it extremely useful in measuring circuits and as a component in filters and tuned circuits. High insulation resistance and low dielectric absorption make it the 1419 Decade Capacitor a nearly ideal capacitor for dc work.

  • Digital Multimeter

    Basic - SparkFun Electronics

    The digital multimeter (DMM) is an essential tool in every electronic enthusiasts arsenal. The SparkFun Digital Multimeter, however, is not your average multimeter, it features a loud continuity sound, current/voltage sense, and quality probes. You can use the multimeter to measure DC and AC voltage, DC current, resistance, continuity, and test diodes. With this version we've done away with the bright flashy colors that can get us into trouble and gone with a nice, neutral gray. This multimeter should provoke no strong feelings one way or the other, we know this because our guts say "maybe."

  • Galvanic Isolation Amplifier

    X005 Series - Positek Limited

    The X005 Galvanic Isolation Amplifier provides a regulated and resistively limited +5V dc power supply required by the sensors, it can be connected in three or five wire modes. Used in five wire mode positive and negative sense inputs enable the X005 to dynamically adjust the sensor supply thus ensuring the correct voltage across the sensor. Connected in this way the X005 can compensate for 15 conductor resistance. The sense terminals are linked internally so the end user can use the X005 in three wire or five wire mode without the need to fit or remove external links.

  • Industrial Temperature Sensors

    AMETEK Sensors, Test & Calibration

    Temperature measurement and calibration is our specialty, allowing us to provide much more than just standard sensors and assemblies. Our long experience, developing and producing industrial temperature sensors, provides us with a wide knowledge about applications and customer needs. This enables us to build and deliver quick and custom-designed quality temperature sensors for almost any kind of solutions and applications, no matter what industry. We offer a complete range of thermocouple assemblies and resistance thermometers, as well as thermocouple wire, extension wire, temperature transmitters and accessories.

  • Signal Isolators

    Datexel

    Signal IsolatorsDatexel manufacture a large range of Signal Isolators. The DAT511 is a loop powered isolator with 3000 V galvanic isolation between the input and output. It is a 2 wire device so there is no external wiring. The DAT511H is similar but is Hart compatible. The DAT4035 is a universal input signal (Thermocouples, RTD's, mV, Volts, mA, resistance and potentiometers) conditioner with 2000 V isolation between the input and output and it is PC programmable. It is a 2 wire loop powered device. The DAT4135 is similar but it is a 4 wire device so it has the ability to boost the output or provide a voltage output.

  • Signal Splitters

    Datexel

    The DAT4530 can convert any process signal (Thermocouples, RTD, mV, Voltage, mA Resistance and Potentiometer) to a voltage or current output (4-20mA, 0-20mA or 0-10V). Each output can be different and it also has a built in limit alarm which is an SPST relay. The DAT4530 is PC programmable with the aid of the Prodat programmer and the Datasoft software which is available from the Datexel down load page. The DAT4530 is also programmable with the aid of 3 DIP switches which can be found on the side of the DAT4530. There is full isolation between the input, power supply, limit alarm output and two outputs.

  • Impedance Standards and Calibrators

    MEATEST, s.r.o.

    Impedance Calibrator is to replace countless single value RCL standards with one calibrator that can switch between the standards like a CD changer in your car. The calibrator contains stable and temperature independent resistance standards, partial capacitance standards and partial inductance standards, simulated by RC T-type passive network. Calibration values of both complex parameters of partial standards are displayed on large LCD screen in preselected pairs of parameters as well as voltage, current and frequency readouts from built-in test signal meter. OPEN and SHORT reference positions are available as well.

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