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IRT-Series: Compact Digital Insulation Testers

Models: IRT.1000 & IRT.2500

The IRT-Series offers robust, high-precision digital insulation resistance testers in a compact, portable form—ideal for professional use in electrical maintenance, diagnostics, and commissioning.

Both models are equipped with:

  • Digital backlit display

  • Test voltage selection

  • High insulation resistance measurement

  • AC/DC voltage detection

  • USB data upload & storage

  • PI (Polarization Index) and DAR (Dielectric Absorption Ratio) testing

  • Battery status indicators

Choose the model based on your voltage range and insulation resistance measurement needs:

Model Options

Key Features

  • Portable, lightweight design with backlit digital display

  • Wide test voltage range (selectable per model)

  • High insulation resistance measurement capability

  • DC and AC voltage measurement

  • Absorption Ratio (DAR) and Polarization Index (PI) tests

  • USB data upload and internal memory storage

  • Real-time battery status indicator and low battery warning

  • Automatic discharge after testing

  • Data logging with up to 1000 stored groups

  • Compliant with IEC 61010-1 CAT IV 600V safety standard

  • IP65 rated for dust and water resistance (outer closed state)

Technical Specifications Comparison

Specification IRT.1000 IRT.2500
Rated Voltage Range 100 V – 1000 V 250 V – 2500 V
Insulation Resistance Range 0.06 MΩ – 50.00 GΩ 0.10 MΩ – 100.0 GΩ
Insulation Resistance Resolution 0.01 MΩ 0.01 MΩ
DC Voltage Measurement Range 2.0 V – 1000 V 2.0 V – 1000 V
DC Voltage Resolution 0.1 V 0.1 V
AC Voltage Measurement Range 2.0 V – 750 V 2.0 V – 750 V
AC Voltage Resolution 0.1 V 0.1 V
Absorption Ratio (DAR) Measurement Yes Yes
Polarization Index (PI) Measurement Yes Yes
USB Data Upload Yes Yes
Data Storage Capacity Up to 1000 groups Up to 1000 groups
Backlight Display Yes Yes
Real-time Battery Power Indicator Yes Yes
Battery Low Voltage Indicator Yes Yes
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