Sonel MIC-RS

500V or 1000V Insulation Resistance Meter

The MIC-RS is the perfect meter for the industry, dedicated to companies and sites that require continuous or random measurement of insulation resistance as part of production. The MIC-RS can be installed in the distribution board, at an operator’s station (assembly or quality control bench), in a control cabinet or even in a rack enclosure. The measurement is performed by means of clamps used to connect test leads of the system where the instrument is installed.


  • Selectable measurement voltage: 500 V or 1000 V
  • Automatic discharge of the measured object’s capacitance upon completion of insulation resistance measurement
  • Measurement current ≤2 mA
  • Protection against measurement of live objects
  • Two- or three-lead method of insulation resistance measurement

Additional features

  • Capacitance measurement after measurement of RISO
  • Low-voltage measurement of resistance
  • Data transmission to a controlling device through the RS-232 interface
  • External power supply
  • The instrument meets the requirements laid down by standard EN IEC 61557


The meter is designed for building in/permanent installation. It plays a Secondary/Slave role, meaning that it executes the commands issued by the Main/Master control device and it does not initialise the transmission on its own. The scope of its functions is tailored to specialised applications. The AutoRange function enables measuring insulation resistance with test voltages up to 1000 V by switching dynamically and adjusting them to current conditions. There are two measurement modes available: automated (continuous) and manual (one time). Under automated testing, you can program your device to measure capacity or not; additionally, you may define default function of your meter as insulation resistance (RISO) or low resistance (RX).

Available on back-order