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Item number: M273S

Multimeter, Milliohmmeter, Insulation Measuring Instrument, Coil Tester and Data Logger in a Single Instrument

The METRAHIT IM XTRA BT is multimeter, milliohmmeter and data logger. Industrial applications can be found in production and testing, as well as for service in the fields of electrical engineering, machinery manufacturing and automotive engineering.
  • Multimeter, Milliohmmeter, Insulation Measuring Instrument, Coil Tester and Data Logger in a Single Instrument
  • Multimeter, Milliohmmeter, Insulation Measuring Instrument, Coil Tester and Data Logger in a Single Instrument
  • Multimeter, Milliohmmeter, Insulation Measuring Instrument, Coil Tester and Data Logger in a Single Instrument

An all-in-one instrument with 30,000 digits: milliohmmeter, multimeter, data logger, insulation resistance tester and coil tester.

Compact and multifunctional for use in the field: can be used advantageously in aircraft cockpits as well as in other constricted spaces, which would otherwise require the use of several individual instruments.

Product Highlights

  • Milliohm measurement using 4-wire connection (Kelvin measurement) with 200 mA or 1 A
  • Insulation tester with test voltage from 50 to 1000 V
  • Inter-turn short circuit test with 1000 V test voltage
  • High-end TRMS multimeter with 100 kHz bandwidth

Your advantages

  • Safety-relevant tests for electric devices, drives and installations with a single field instrument
  • Testing of high-voltage systems in accordance with UN ECE R100
  • Insulation resistance measurement per EN 61557-2 / VDE 0413-2
  • Rlow installation testing per EN 61557-4 / VDE 0413-4
  • Bonding test and equipotential bonding measurement, e.g. on aircraft outer skins (lightning protection, wick test)


The multimeter is a portable, extremely rugged instrument designed for use in the field. It’s suitable for maintenance, service and diagnostics at electric machines, drive units and systems, for example in automotive, avionics, energy and automation applications.

The all-in-one instrument combines an insulation tester, a milliohmmeter, an inter-turn short circuit tester and a universal multimeter. It’s ideal for safety testing and diagnostics at electric and hybrid vehicles, as well as all types of electric machines.

In combination with an optional coil test adapter, it permits the measurement of inter-turn short circuits.

  • Technical characteristics
    • Installation resistance measurement up to 3.1 GΩ with interference voltage detection, test voltages: 50, 100, 250, 500 and 1000 V per EN 61557-2
    • DAR: dielectric absorption rate and PI: polarization index
    • 4-wire milliohm measurement with Kelvin connection and 200 mA or 1 A measuring current for precise measurement of extremely small resistances with a resolution of 1 µΩ
    • 2-Wire Rlo measurement with 200 mA test current per EN 61557-4
    • Inter-turn short circuit test with 1000 V test voltage and optional COIL adapter
    • Multifunctional instrument
    • TRMSAC/AC+DC measurement for current/voltage up to 10/100 kHz
    • Low-pass filter – AC, AC+DC
    • Direct current measurement
    • Current measurement with clamp sensors: the transformation ratio can be adjusted with the CLIP from 1:1 to 1:1000 and is taken into account in the amperage display.
    • Capacitance measurement
    • Precision temperature measurement in °C and °F for RTD and TC-K sensors
    • Diode measurement (K flow up to 5.1 V) and continuity testing
    • Acoustic signaling
    • Logging of min. and max. values, DATA Hold
    • Data logger thanks to integrated memory module and real-time clock, for individual measurements as well
    • The push-print function transfers measured values to application software by simply pressing a key
    • Programmable sequences for test routines
    • METRALOG APP for Android OS
    • Color graphic display
    • Modular power supply: standard quick-change, rechargeable lithium battery, optional mains module with USB port, changeover without interrupting the measuring circuit thanks to touch protected module socket
    • Automatic blocking sockets (ABS) for the current input
    • Test probe with START (ISO) and STORE keys
    • Housing with IP 52 protection – dust and splash protected, interchangeable rubber holster
    • Interfaces: Integrated Bluetooth – USB with optional mains module
    • IZYTRONIQ Windows software for documentation, preparation of test reports and graphic evaluation of measurements
  • Particularities

    All-in-one instrument:

    • Multimeter, insulation tester and milliohmmeter
    • 4-wire milliohm measurement in a handheld instrument with 200 mA and 1 A
    • Handheld instrument for field use with inter-turn short circuit detection at 1 kV
    • Interfaces: Bluetooth or USB with optional mains module
    • METRALOG APP für Android OS live display, recording and evaluation of momentary measured values
    • Including DAkkS calibration certificate



Do you have any questions on the product or do you need technical information or details on the current delivery period? Our sales backoffice will be pleased to assist you.

Sales International:
Telephone: +49 911 8602-0
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