Features
- Measure from 1 μΩ (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
- 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
- Internal rechargeable batteries - conduct up to 5000 10 A tests
- Rugged, double insulated waterproof case
The AEMC 6255 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 6255 with an external RDT temperature probe.
The AEMC 6255 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 6255 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 6255 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 6255 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
