Portable Battery-Operated Milliohmmeter RESISTOMAT® Model 2320

  • Measuring ranges from 40 mΩ to 4 kΩ
  • Resolution up to 10 μΩ
  • Measuring accuracy 0.05 % Rdg.
  • Autorange
  • Temperature compensation
  • Bipolar measurement
  • Input voltage protection up to 415 Vrms


The RESISTOMAT® model 2320 is a universally applicable and easy to operate measurement device for low-ohmic resistances. The light and handy device in a stable IP54 plastic housing with membrane keypad is likewise suitable for use in service, laboratory or on the production fl oor. The power supply is done via built-in rechargeable battery packs or by standard batteries.

If need be, the temperature of samples can be measured and the sample resistance is subsequently compensated to fi t the value at 20°C. This applies for samples with resistances depending on the sample’s temperature. The temperature coeffi cients for copper and aluminium are included as standard. A third and fourth coeffi cient may be set individually for any given material to be measured.

The application range is manifold, such as measurement of:

  • resistance elements
  • plug connections
  • power rails
  • fuses
  • cable connections
  • transformers
  • electrical motors
  • cable and wire, and many more


The 4-wire measurement confi guration eliminates possible errors caused by test lead and contact resistance. This is the basis for resistance measurements in the mΩ range. The resistance value calculated in the current voltage method is then indicated on the large LCD display in mΩ, Ω or kΩ.

Single as well as permanent measurements are possible whereby the 6 measurement ranges can be selected in manual or automatic mode. The standard resistance value at 20 °C is calculated and displayed if the temperature compensation is active. The measured temperature may also be displayed directly.

Thermo voltages are eliminated by the bipolar current source and the calculation of the mean value (key AVE).

Low battery charge is informed through the LED “LOBAT”. The battery pack can be replaced in a very simple manner. Recharging is done in an external station.