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  1. ASR primary resistance standards series

    ASR primary resistance standards series

    The ASR series is an extremely stable standard resistor. Alpha Electronic's Ni/Cr alloy Bulk Metal® Foil technology is used as the resistive element, providing high stability and low temperature coefficient. With the extreme stability of this resistor relative to temperature change, the ASR can be used in air without the need of an oil bath or critical environmental temperature control, eliminating added operation and maintenance costs.

    • Excellent long-term stability of resistance, less than 3 ppm/year
    • Low temperature coefficient, less than 0.2 ppm/°C
    • Resistance options between 1Ω to 10MΩ available
    • Excellent AC characteristics due to Bulk Metal Foil technology
    • Compact construction designed for simple operation and storage
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  2. ATV I/V converter series

    ATV I/V converter series

    The ATV series is a current / voltage (I/V) conversion adaptor used to accurately measure current using a voltage meter. Its small, lightweight construction enables it to be easily attached directly to a voltage meter for ease of operation.

    • Small and lightweight
    • Temperature coefficient of ±2.5 ppm/°C
    • ±0.1% accuracy
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  3. CSR working resistance standards series

    CSR working resistance standards series

    The CSR working standard resistor series uses Bulk Metal® foil resistance elements, which have the same excellent stability and low temperature coefficient of resistance as the ASR series. Bulk Metal® foil offers a precision that cannot be matched by any other resistance material.

    • Wide resistance range available from 1mΩ to 100MΩ
    • Custom resistance values are available on request
    • Compact construction designed for simple operation and storage
    • Terminals aligned in a single row for easier wiring and placement
    • Low cost, high performance
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  4. LSR high power standard resistor series

    LSR high power standard resistor series

    The LSR high power standard resistor series was developed to meet the requirements of high current / low resistance applications. Bulk Metal® Foil resistive elements are used to ensure the best long-term stability and lowest temperature coefficients are achieved. The enclosure is manufactured from perforated aluminum to allow effective air flow and temperature dissipation during high power operation.

    • Long-term stability better than 20 ppm/year
    • Temperature coefficient of ±2.5 ppm/°C
    • Temperature efficient design to control self-heating
    • Excellent AC characteristics due to Bulk Metal® Foil technology
    • Compact construction designed for simple operation and storage
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  5. MSR milliohm meter calibration resistor series

    MSR milliohm meter calibration resistor series

    The MSR series offers a compact standard resistor suitable for the calibration of low resistance milliohm meters. The internal construction and connection terminals are designed to optimize AC characteristics and minimize the effect of thermoelectromotive force. The MSR calibration resistor is a cost effective and simple product, offering both high stability and low temperature coefficient.

    • Compact, lightweight, portable and easy to operate
    • Excellent performance versus cost
    • Resistive pattern designed to minimize difference performance between AC and DC
    • Standard resistance values of 1mΩ, 10mΩ and 100mΩ available as well as custom resistances
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  6. USR-SF stress free resistance standards series

    USR-SF stress free resistance standards series

    The USR-SF series is an ultra stable primary standard resistor which is an enhanced version of the USR / ASR series. The ultra stable resistive element utilises the new generation stress-free Bulk Metal® Foil technology. This results in an extremely low temperature coefficient of ±0.05 ppm/°C at 23°C ±5°C. This performance is unique to this form of metal foil technology.

    • Utilises the new generation Stress Free Bulk Metal® Foil technology.
    • Long-term stability: 0.5 ppm/yr (0.2 ppm/yr typical)
    • Temperature coefficient: less than ±0.05 ppm/°C at 23°C ±5°C
    • Excellent humidity coefficient of resistance of less than 0.1 ppm/% RH
    • Excellent pressure coefficient of resistance of less than 0.001 ppm/hPa
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