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Milliohmmeter multimeter.

METRAHit 27I In addition to a milliohmmeter and a multimeter, an insulation tester has been integrated into the MetraHit 27I for measurements up through the Giga ohm range. Especially where service and repairs in the field of aviation technology are involved, the instrument can be used in a broad range of applications.

Milliohmmeter - Insulation tester

Model  Description 
Metrahit 27I  Milliohmmeter, Multimeter Insulation tester.

The METRAHit.27I milliohmmeter is used additionally for service and repair work performed on airplane
and helicopter electrical systems (voltage, insulation, milliohm and temperature measurement).
In addition to its own multimeter functions for electrical quantities, the instrument also includes a mega-ohm measuring function with insulation test voltages of 50, 100, 250 and 500 V, as well as temperature
measurement with Pt100 and Pt1000 sensors.

The METRAHit.27 is a compact, rugged and reliable instrument, which is equally suitable for precision
measuring and recording tasks in the factory, for on-site service and in the laboratory:
Adjustment of shunts in instrumentation.
Testing of electrical connections at conductor bars for open pit mining, in potential bonding systems,
and for industrial and household applications.
Testing of cable resistance, wiring, shunt resistors in PCBs and thick-film circuits.
Measurement of contact resistance in relays, contactors and power interrupters.
Testing of resistance in fuses, as well as conductor resistance in heavy current circuits.
Testing of winding resistance in transformers, coils, small motors etc.
Testing of discharge resistance on aircraft, and at aircraft outer skin components.
Contact resistance testing in uninterruptible power supplies.
Measurement of cell voltages, for example in on-board batteries and emergency power supplies.
Contact resistance testing at welding seams.

Milliohmmeter Insulation Tester specification
Insulation Resistance  30 MΩ to 3 GΩ 
Insulation voltage  50, 100, 250 or 500 V 
Milliohmmeter resistance  3.000 mΩ to 300.00 mΩ with 1 A measuring current and
0.00 mΩ to 30.00 Ω with 200 mA measuring current 
Kelvin connection  4-wire measurement 
Resistance measurement  from 300 Ω to 30 MΩ 
Voltage measurement  from 3 to 600 V DC and 3 to 600 V AC with ±30,000 digits 
Frequency Measurement  from 300 Hz to 3 kHz 
DATA hold memory  up to 1200 measured values