Gossen Metrawatt METRAHITE IN THE Xtra BT | TRMS multimeter, 4 3/4, milliohm, insulation, winding test, data (M273S)

Manufacturer number: M273S

Gossen METRAHIT IM Xtra BT | TRMS multimeter, 4 3/4, milliohm, insulation, winding test, data (M273S)

  • Multifunction instrument
  • Milliohm measurement with 4-wire connection (Kelvin measurement) with 200 mA or 1A
  • Insulation tester with test voltages from 10 to 1000 V
  • Winding short circuit measurement
  • Winding test with 1000 V test voltage
  • Safety-relevant tests for electrical devices, drives and installations with only one field-capable device
  • High voltage system test according to UN ECE R100
  • Insulation resistance measurement according to EN 61557-2 / VDE 0413-2
  • Rlow installation test according to EN 61557-4 / VDE 0413-4
  • Bonding test or potential equalization measurement, e.g. on the outer skin of the aircraft (lightning protection - discharge test/"wick test")
  • Insulation resistance measurement up to 3.1 G with external voltage detection, test voltages: 50 V, 100 V, 250 V, 500 V, 1000 V according to EN 61557-2 / VDE 0413-2
    DAR: PI:
  • 4-wire milliohm measurement with Kelvin connection and 200 mA or 1 A measuring current for precise measurement of smallest resistances with 1 resolution
  • 2-wire Rlow measurement with 200 mA test current according to EN 61557-4 / VDE 0413-4
  • True RMS measurement TRMSAC/AC+DC for current/voltage up to 10/100 kHz
  • Low-pass filter AC, AC+DC
  • Direct current measurement
  • Current measurement with clamp sensors: The transmission factor is adjustable with CLIP from 1:1 to 1:1000 and is taken into account in the ampere display.
  • Capacitance measurement
  • Precision temperature measurement °C, °F for RTD and TC-K sensors
  • Diode measurement K flux up to 5.1 V) and continuity test
  • Acoustic signaling
  • Acquisition of min/max values; DATA Hold
  • Data logger thanks to integrated memory and real-time clock, also for single measured values
  • Push/Print function transfers measured values to application software at the touch of a button
  • Programmable sequences for test routines
  • Color graphic display with analog bargraph
  • Modular power supply: standard lithium quick-change battery pack
  • Optional WPC module for inductive charging and power supply module with USB interface, change without interrupting the measuring circuit thanks to contact-protected module socket
  • Automatic socket lock (ABS) for current input
  • Test probe with START (ISO) and STORE function keys
  • IP52 housing, dust and drip-proof, replaceable rubber protective cover
  • Bluetooth or WLAN integrated, USB with optional power supply module

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Technical Data


METRAHITE IN THE Xtra BT | TRMS multimeter, 4 3/4, milliohm, insulation, winding test, data (M273S)

An all-in-one instrument METRAHIT IM XTRA with 30,000 digits: milliohmmeter, multimeter, datalogger and insulation resistance and winding tester. Compact and multifunctional for field use: just as advantageous in the aircraft cockpit as in other confined measuring locations where several individual instruments would otherwise have to be used. 

The multimeter is a portable, extremely rugged multimeter designed for field use. It is suitable for maintenance, service and diagnostics on electrical machines or drives and systems, e.g. in the automotive, avionic, energy or automation sectors.

The all-in-one device is an insulation tester, milliohmmeter, turn-to- turn tester and universal multimeter. It is ideal for safety checks and diagnostics on electric and hybrid vehicles, as well as any type of electric machine.

It allows for winding short circuit measurements when used in conjunction with an optional Coil Test Adapter.



  • 1 METRAHIT IM XTRA multimeter with protective rubber cover
  • 1 test probe with START and STORE function
  • 1 pair of safety test leads type KS17-2 with 4 mm test probe
  • 1 pair of Kelvin clamps type KC4
  • 1 Lithium-polymer quick-change battery with Micro-USB charging socket
  • 1 USB plug-in power supply (5VDC 2A) with cable to micro-USB charging plug
  • 1 Software IZYTRON.IQ BUSINESS Starter for documentation, creation of test reports and graphical evaluation of measurements
  • 1 short user manual German/English
  • 1 Operating manual in German and English (download)
  • 1 DAkkS calibration certificate
  • 1 hard case to hold the multimeter with accessories

Accessoires (3 products )

Accessoires (3 products )

Gossen Metrawatt Z270G
Lithium polymer battery for Metrahit IM multimeter, 14.8 Wh

Ready to ship in 5 to 10 business days

Gossen Metrawatt Z270F
Coil adapter 50mH for interturn fault detection for inductivities

Delivery time upon request

Gossen Metrawatt Z270M
Coil Adapter XTRA for short-circuit detection for inductances from 10 µH to approx. 5 H

Ready to ship in 5 to 10 business days


About the Manufacturer

Gossen Metrawatt
Safety through competence. With over 100 years of experience, Gossen Metrawatt offers you unique products for measurement and testing technology as well as industrial metrology. The products stand for quality, reliability, safety and progressiveness, but also for dynamic and ergonomic design, high ease of use and unique innovative spirit.

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