Model 6250 [Catalog No. 2129.81] 10A Micro-Ohmmeter

—DISCONTINUED— Replaced by 6255
Model 6250 [Catalog No. 2129.81] 10A Micro-Ohmmeter
  • Measure from 0.0001mΩ (0.1μΩ resolution) to 2500.0Ω
  • Test current selection of 1mA, 10mA, 100mA, 1A and 10A
  • RTD temperature probe to check tested sample (optional)
  • Selectable metal types
  • Automatic and manual temperature correction
  • EMF levels measured and eliminated in measurement
  • Two programmable alarm set points
  • Stores up to 1500 test results
  • Selectable Inductive or Resistive test modes
  • Large multi-line electroluminescent display
Characteristics (cont’d) :
  • Automatic multiple test mode (multiple tests without pressing the test button)
  • Local or remote test setup and control
  • Direct printout
  • Internal rechargeable batteries– conduct up to 5000 10A tests
  • Rugged, double insulated waterproof case
  • CE Mark
  • 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
Product Description:
The 10A Micro-Ohmmeter Model 6250 is a rugged, low resistance tester designed for both plant maintenance and field use. Utilizing a four-lead Kelvin method, the Model 6250 is the most accurate Micro-Ohmmeter available, with results within 0.05%.Resistance measurements are automatically calculated, taking into account the measurement value, ambient temperature, metal type and metal temperature co-efficient. Metal temperature can be manually entered by the operator or directly measured by the Model 6250 with an optional RTD temperature probe. The Model 6250 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; resistive (instantaneous test), inductive (continuous test), and auto (repetitive test). Up to 1500 measurements can be stored and printed directly to a printer of from a PC.
  • The Model 6250 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 the 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.
  • The large, easy-to-read display shows the resistance measurement, ambient and reference temperatures, metal type and test method, as well as alarm conditions and memory utilization, all in real time. Previously stored test results can easily be called up for review on the display or sent directly to a printer or remote terminal.
  • Two programmable alarm set points are available. Each can be either active high or low and will sound an alarm when tripped, further adding to the ease of use by permitting quick Pass/Fail measurements.
  • External trigger operation is available through the communication port allowing the test to be conducted from a remote location.
  • The list of features and functions goes on and on. The Model 6250 will be a valuable asset for your bond testing, coil and contact testing as well as coatings and connector or any other low resistance testing application.
MODEL 6250
5.0000mΩ 0.05% + 0.5μΩ 0.1μΩ 10A
25.000mΩ 0.05% + 3μΩ 1μΩ 10A
250.00mΩ 0.05% + 30μΩ 10μΩ 10A
2500.0mΩ 0.05% + 0.3mΩ 0.1mΩ 1A
25.000Ω 0.05% + 3mΩ 1mΩ 100mA
250.00Ω 0.05% + 30mΩ 10mΩ 10mA
2500.0Ω 0.05% + 300mΩ 100mΩ 1mA
Measurement Mode Selectable: Inductive (continuous test), Resistive (instantaneous test) or Auto (multiple tests).
METAL TYPE Selectable: Copper, Aluminum or Other Metal
ALPHA Programmable from 000.00 to 99.99
Correction Manual or Automatic with 0.1° resolution
Reference Programmable from 32° to 130°F or -10° to 130°C
Ambient Programmable from 32° to 130°F or -10° to 130°C
Probe 100Ω platinum RTD
Resolution ±0.1°F (0.1°C)
Accuracy ±0.9°F (±0.5°C)
Alarms Two – programmable set points from 0.0 to 2500.0Ω
Buzzer Programmable ON/OFF and volume level
Power Source Rechargeable 6V, 8.5 Ah NiMH batteries;
Battery Life Approximately 5000 10A tests
Battery Charging 120/240VAC ± 20% (45 to 400Hz) line voltage
Power Management Display powers down after 1, 5 or 10 minutes of inactivity (operator selectable)
Low Bat. Indication is displayed when battery voltage is low
Memory Stores up to 1500 test resultsData in memory can be reviewed on the instrument display, on a PC or via direct printout
Dimensions 10.63 x 9.84 x 7.09″ (270 x 250 x 180mm)
Weight 8.1 lbs (3.69kg)
Index of Protection IP53 (case open); IP64 (case closed)
Display Type Large 50,000-count digital
Size 4 x 2.25″ (102 x 57mm)
Backlight Blue electroluminescent
Color Safety yellow case; gray faceplate
Interface Port PC, remote terminal, printer or trigger test from remote contact closure
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)
Safety Rating EN 61010-1, 50V Cat. III
Double Insulation Yes
CE Mark Yes
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