Chauvin Arnoux CA 6250 Ohm Meter, 2500 Ω Max, 100nΩ Resolution, 4 Wire

Portable 10A Micro-ohmeter for testing the quality of mechanically bonded metalwork, contacts and switches, resistance of cables and heating of motors and transformers.

Large backlit LCD display
Broad measurement range 1μΩ to 2,500Ω
Temperature compensation of readings to allow for temperature variations
4 wire measurement with automatic compensation for spurious voltages
Automatic detection of the presence of external AC or DC voltages on the terminals to disable measurements where accuracy cannot be guaranteed
3 measurement modes:
Inductive mode for measurements on inductive components (transformers, motors, etc.)
Non-inductive mode for measurements on resistances, with a time constant of a few ms (contacts, metallization, etc.)
Non-inductive mode with automatic triggering for measurements on resistances with no time constant
Programmable audible alarm limit
Memory storage of 1,500 measurements
2 wire PT100 temperature probe input
RS232 interface for connection to a PC or printer
Rechargeable NiMH batteries with integral charger
IP64 case (closed); IP53 (open)
Complies with EN61010-1 CAT III, 50V

Carry case, NiMH batteries (fitted), 2m test lead set with Kelvin clips; mains power lead and instruction manual.