Surface Insulation Resistance Testing
AutoSIR2+ - SIR Testing

Following over 2 years of intense research and development, we are proud to introduce the next generation of equipment used to measure changes in Surface Insulation Resistance.

The new AutoSIR2+™ system represents a dramatic improvement over existing SIR test alternatives, and its shielded precision electronics allows state-of-the-art accuracy resistance measurements to be made up to 1014 Ω.

One AutoSIR2+ chassis can hold between 1 to 16 measurement cards and can monitor up to 256 x 2-point test patterns or 78 x 5-point test patterns, or 32 x 9-point test patterns at selectable intervals from minutes to days. Each channel is current limited (1 M Ω), which encourages growth of dendrites for failure analysis. The frequent monitoring capability provides a full picture of the electrochemical reactions taking place on a circuit assembly, and provides early trend analysis enabling tests to be curtailed, thus saving considerable test time and money.

Key Features

  • Measurements from all 256 Channels can be taken in <30 seconds
  • Applied Voltage: +1V to 100V
  • Measurement Range: 106 Ω to 1014 Ω
  • Measurement Method: Continuous on all selected channels
  • Measurement Test Intervals: Fully selectable from minimum of 1 minute
  • Capable of testing to all existing test specifications – IPC – IEC – JNC and other user specifications
  • Future proofed design
  • AutoSIR2+ is available with 64, 128 or 256 channel configurations
  • On connection the system runs a self test
  • Adaptable and flexible software operating with Windows 7, 8 &10

Technical Specifications

Number of Channels 64 or 128 or 256
Measurable range of insulation resistance 106 to 1014 Ω
Internal Bias Voltage

0V; 3.3V; 5V; 10V; 12.5V; 15V; ±50V, ±100V

External Bias Voltage 1V to 100V free selection external 1V to 1250V
Measurement Method Continuous on all selected channels
Measurement Test Intervals Fully selectable from minimum of 1 minute
Measurement Speed Optimised at <100ms per channel for data management
Maximum Test Duration Unlimited
Current measuring cable Fully shielded

Low resistance
Test Running
Temperature and humidity
Bias Voltage Out of Range/Failure

Data collection Sampling Time, Elapsed Time,
Resistance, Current, Applied Voltage,
Temperature, Humidity
Applicable OS Windows® 7 onwards
Power requirment 110V/230V Switchable mains
single phase

17 kgs (37.5 Ibs)

52 x 34 x 17cm

For full tech spec, please email

AutoSIR2 and AutoCAF2 Accessories

Gen3 offers custom Test Racks as accessories to the AutoSIR2+ & CAF2+. Contact us for more details.

SMTA Banner

Watch the video
Download Brochure