LRM-10

Contact Resistance Measurement Kit

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  • Much lighter and handier than other equip- ment in its category
  • Shock resistant, it is suitable for all types of applications: work site or laboratory
  • Weak current injection for applications that require small measurement contacts
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  • The LCD display is equipped with a backlight to allow work in any conditions
  • Many accessories are available for your ap- plication such as exothermic welding (Cad- weld®), measurements on very small surfaces, etc…

The LRM-10™ is a lightweight and portable micro-ohmmeter designed to measure very low resistances from 0.01 µΩ to 200 Ω.

It is the most accurate in its category.

The LRM-10™ uses a four cable measurement method which consists of a Current injecting channels (+I, -I) and a Voltage sensing channel (+V, -V). The instrument accurately measures the current injection while simultaneously senses the voltage drop across the DUT, the resistance is then calculated. The current injection measurement along with high impedance voltage sensing input channel, eliminates the error induced by test lead resistances. The instrument’s microprocessor eliminates gaps, noises & parasite voltages influence on the resistance measurements. Thanks to its unique filtering system, the LRM-10™ can be used in spite of the presence of intense magnetic fields.

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Electrical interconnections, such as sockets, switches, circuit breaker contacts, cable joints, battery inter-cell connections and other connection devices, are affected by factors like residual contact force, vibrations, and corrosion. These factors generally succeed in compromising the integrity of contact interfaces, and eventually lead to degradation and failure of all electrical connections. The time-to-failure varies widely depending on the connection types and environment. Failure is always preceded by a significant increase in contact resistance at the electrical interfaces.

Applications

  • Circuit breakers contact resistance
  • Battery strap connection resistance
  • Switches contacts resistance
  • Tap Changer contact resistance
  • Cable/Bus bar inspection
  • Power fuses inspection
  • Ground bonding inspection
  • Electrical sockets resistance
  • Lightning rod integrity
  • Railway bond resistance
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Included

  • LRM-10™ instrument
  • Set of standard cables and clips
  • LRM-4015-HD™ double hands probes
  • Nylon Mesh Protective bag
  • Battery charger
  • Rechargeable batteries
  • User Manual
  • Calibration certificate
Data Sheet
User Manual