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  • Reliable low resistance measurements
  • Four-terminal Kelvin resistance measurement eliminates test lead resistance
  • 10 A test current at up to 4000 µΩ
  • 0.25% basic accuracy
  • 1 µΩ resolution
  • Direct reading, easy to operate
  • Six selectable resistance ranges
  • Polarity reversal button
  • Overload and input fuse protection
  • Manufactured to international safety and environmental standards
  • Automatic scaling and zeroing
  • Large terminals accept banana plugs and spade lugs
  • Rechargeable NiMH battery with internal charger (110/230V)
  • Rugged, double insulated waterproof case
  • Includes DataView software for instrument configuration, data storage, analysis and report generation

The AEMC 6240 10 A micro-ohmmeter is a rugged, low resistance tester designed for both plant and field use. It is a cost effective, feature rich instrument designed for measuring contact resistance, bond resistance and other low resistance connections. The 6240 accurately measures very low resistance with 0.25% accuracy utilizing a four-lead Kelvin method of testing.

An internal NiMH battery pack is rechargeable from 110/230 V, 50/60 Hz. A fully charged battery can perform up to 850, 10 A tests. Resistance measurements are automatically calculated from 1 µΩ to 400 Ω with resolutions down to 1 µΩ.

The AEMC 6240 Micro-Ohmmeter has selectable test currents of 10 A, 1 A, 100 mA and 10 mA and includes a polarity reversal function. The 6240 is designed to conduct tests on both resistive and inductive material. Polarity reversal is easily accomplished with a push of a button. The resistance measurements of both positive and negative test results, as well as the average, are displayed.

The included DataView software allows you to: download data, temperature compensate the test results, store data and print reports using predefined templates or custom templates you create.

Applications for the AEMC 6240 Micro-Ohmmeter:

  • Aerospace metallic coating resistance measurement
  • Bonding verification on earth/ground systems
  • Weld joint integrity verification
  • Contact resistance measurement of breakers and switchgear
  • Aircraft and rail bonding checks
  • Wire to terminal connections and resistance checks
  • Battery strap resistance checks
  • Cable joint and bus bar connection checks
  • Mechanical bond tests

The AEMC 6240 Micro-Ohmmeter ships complete with:

  • (2) 10 ft. Kelvin clips (10 A - Hippo)
  • NiMH rechargeable battery pack
  • Optical USB cable
  • US 115 V power cord
  • Pad of measurement results forms
  • DataView software
  • Extra large tool bag
  • Two spare fuses (12.5 A)
  • Product warranty and registration card
  • User manual
AEMC 6240 Micro-Ohmmeter Specifications:
Range 4000 µΩ 40 mΩ 400 mΩ 4000 mΩ 40 Ω 400 Ω
Accuracy 0.25% of reading ±2 cts 0.25% of reading ±2 cts 0.25% of reading ±2 cts 0.25% of reading ±2 cts 0.25% of reading ±2 cts 0.25% of reading ±2 cts
Resolution 1 µΩ 10 µΩ 0.1 mΩ 1 mΩ 10 mΩ 100 mΩ
Test Current 10 A 1 A 1 A 100 mA 10 mA 10 mA
Measurement Mode Single test start/stop or auto test and store of multiple measurements
Power Source Rechargeable 6 V, 8,5 Ah NiMH batteries
Battery Life Up to 850, 10 A tests
Battery Charging Internal 110/230 V AC, 50/60 Hz charger
Power Management User selectable power save mode
Low Battery Indication Icon blinks when battery needs changing
Memory Stores up to 99 test results. Data in memory can be reviewed on the instrument display, on a PC or via direct printout
Dimensions 10.70 x 9.76 x 7.17" (270 x 250 x 180 mm)
Weight 10 lbs (4.5 kg)
Index of Protection IP53 (case open); IP54 (case closed)
Display Type 4000-count LCD
Size 4 x 2.25 (102 x 57 mm)
Backlight Blue electroluminiscent
Color Safety yellow case; gray faceplate UL94 V-0
Interface Port Optically isolated USB
Operating Temperature 14° to 132°F (-10° to 55°C); 10 to 85% RH
Storage Temperature -40° to 158°F (-40° to 70°C); 10 to 90% RH
AEMC Kelvin Clips
Set of two, 10 A Hippo, 10 ft.
AEMC Kelvin Clips
Set of two, 10 A Hippo, 20 ft.
AEMC Kelvin Probes
Set of two, 1 A - spring-loaded, 10 ft. Kelvin probes
AEMC Kelvin Probes
Set of two, 1 A - spring-loaded, 20 ft. Kelvin probes