AEMC 6250 Micro-ohmmeter

Digital micro-ohmmeter for measuring from 0.0001 mΩ to 2500.0 Ω with 0.05% accuracy.

Retired products cannot be ordered

The AEMC 6255 Micro-Ohmmeter is the recommended replacement

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Part Number

2129.81

Manufactured

By AEMC

Includes

FREE Ground Shipping
FREE Lifetime Tech Support

Product Manual Product Specs (2 Files)

Features

Measure from 0.0001 mΩ (0.1 µΩ resolution) to 2500.0 Ω
Test current selection of 1 mA, 10 mA, 100 mA, 1 A and 10 A
RTD temperature probe to check tested sample (optional)
Selectable metal types
Automatic and manual temperature correction
EMF levels measured and eliminated in measurment
Two programmable alarm set points
Stores up to 1500 test results
Selectable inductive or resistive test modes
Automatic multiple test mode (multiple tests without pressing the test button)
Large multi-line electroluminescent display
Local or remote test setup and control
Direct printout
Internal rechargeable batteries - conduct up to 5000 10 A tests
Rugged, double insulated waterproof case

The AEMC 6250 10 A micro-ohmmeter is a rugged, low resistance tester designed for plant maintenance, quality control in manufacturing, and field use. Utilizing a four-lead Kelvin method of testing, the 6250 is one of the most accurate micro-ohmmmeters available with results up to 0.05% accuracy.

Resistance measurements are automatically calculated and displayed taking into account the measurement value, ambient temperature, reference temperature, and metal temperature coefficient. Sample temperature can be manually entered by the operator or directly measured by the AEMC 6250 with an external RDT temperature probe.

The AEMC 6250 micro-ohmmeter is uniquely designed to conduct tests on both resistive and inductive material with operator selection directly from the front panel. Three test modes are available and automatically employed based on this selection:

Resistive materials (i.e. ground bonding, coatings, contact resistances) are tested with an instantaneous test. Simply press the test button - the reading is taken and ther test is concluded.
Inductive materials (i.e. coils, transformers, motor windings) are tested with a continuous test. The test is started and stopped by the operator at the push of a button.
Auto test mode is designed for multiple test points on resistive and/or low inductance material. The test is started at the press of a button. As the operator moves the probe from one point to another, the test is stopped, the results are displayed and a new test is started when the test probes again make contact - no need to press the test button! Residual voltage is measured between tests to ensure proper results. This test mode continues until the operator presses the button to conclude the testing.

Applications for the AEMC 6250 digital 10 A micro-ohmmeter:

Aerospace metallic coating resistance measurement
Winding resistance measurement of motors and transformers
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 6250 digital 10 A micro-ohmmeter ships complete with:

(2) 10 ft. Kelvin clips (10 A - Hippo)
NiMH 6 V rechargeable battery pack
RS-232 DB9 F/F 6 ft null modem cable
US 115 V power cord
Pad of measurement results forms
DataView software
Extra large tool bag
Product warranty and registration card
User manual

AEMC 6250 Micro-Ohmmeter Specifications:
Electrical
Range	5.000 mΩ	25.000 mΩ	250.00 mΩ	2500.0 mΩ	25.000 Ω	250.00 Ω	2500.0 Ω
Accuracy	0.15% of reading +1 µΩ	0.05% of reading +3 µΩ	0.05% of reading +30 µΩ	0.05% of reading +0.3 mΩ	0.05% of reading +3 mΩ	0.05% of reading +30 mΩ	0.05% of reading +300 mΩ
Resolution	0.1 µΩ	1 µΩ	10 µΩ	0.1 mΩ	1 mΩ	10 mΩ	100 mΩ
Test Current	10 A	10 A	10 A	1 A	100 mA	10 mA	1 mA
Measurement Mode		Selectable: Inductive (continuous test), Resistive (Instantaneous test) or Auto (multiple tests)
Power Source		Rechargeable 6 V, 8.5 Ah NiMH batteries
Battery Life		Approximately 5000, 10 A tests
Battery Charging		Internal 120/240 V AC, 45/400 Hz line voltage
Power Management		Display power down after 1, 5 or 10 minutes of inactivity (operator selectable)
Low Battery Indication		Icon displays when battery needs changing
Memory		Stores up to 1500 test results. Data in memory can be reviewed on the instrument display, on a PC or via direct printout
Mechanical
Dimensions		10.63 x 9.84 x 7.09" (270 x 250 x 180 mm)
Weight		8.1 lbs (3.69 kg)
Index of Protection		IP53 (case open); IP54 (case closed)
Display
Display Type		Large 50,000 count digital
Size		4 x 2.25 (102 x 57 mm)
Backlight		Blue electroluminiscent
Color		Safety yellow case; gray faceplate UL94 V-0
Communication
Interface Port		a-pin, RS-232
Environmental
Operating Temperature		14° to 132°F (-10° to 55°C); 10 to 80% RH (non-condensing)
Storage Temperature		-40° to 140°F (-40° to 60°C)
Environmental
Safety Rating		EN 61010-1, 50 V CAT III
Double Insulation		Yes
CE Mark		Yes