Atec AEMC-6240, AEMC-6250 User Manual

Digital 10A
Micro-Ohmmeters
Measure low
resistance with
high accuracy
Models 6240 & 6250
►Selectabletestcurrentand
resistanceranges
►0.1µΩresolution
►Simpleonebutton
“press-to-start”operation
►Softwaretemperature
correctionforaccurate measurements
►Automaticallytakesmultiple
measurementsbysimply movingthetestprobesfrom pointtopoint
►Storestestresultsinternally
►Largeeasy-to-readbacklit
electroluminescentdisplay
►Datastorage,analysis
andreportgeneration throughDataView softwareincluded
®

Our products are backed by over 100 years of experience in test and measurement
Technical Hotline: (800) 343-1391
www.aemc.com
Low Resistance, High Accuracy

Model 6250

The 10A Micro-Ohmmeter Model 6250 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 Model 6250 is one of the more accurate Micro-Ohmmeters available, with results up to 0.05% high 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 Model 6250 with an external 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 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.

FEATURES

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 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 10A tests
Rugged, double insulated
waterproof case

APPLICATIONS

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
Model 6240 Model 6250
2
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Technical Assistance (800) 343-1391
The 10A Micro-Ohmmeter Model 6240 is a rugged, low resistance tester designed for both

Model 6240

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 Micro­Ohmmeter Model 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 110/230V, 50/60Hz. A fully charged battery can perform up to 850, 10A tests.
Resistance measurements are automatically calculated from 1μΩ to 400Ω with resolutions down to 1μΩ.
The Model 6240 has selectable test currents of 10A, 1A, 100mA and 10mA and includes a polarity reversal function. The Model 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.
A large easy-to-read multi-line backlit display indicates all test result information including the resistance measurement, test current and test voltage.
An automatic test mode feature provides for repetitive tests by simply moving the test probes from point to point, displaying the test results and automatically storing the reading in the instrument’s internal memory for later recall and report generation.
Up to 99 measurements can be stored and printed directly to a printer or downloaded to a PC for analysis and report generation.
An optically isolated USB port provides quick and easy downloads while protecting the PC from any electrical interference.
The DataView the test results, store data and print reports using predefined templates or custom templates you create.
®
software included allows you to: download data, temperature compensate

FEATURES

Reliable low resistance measurements Four-terminal Kelvin resistance measurement
eliminates test lead resistance
10A test current at up to 4000μΩ 0.25% basic accuracyΩ 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
configuration, data storage, analysis and report generation
software for instrument

APPLICATIONS

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
Model 6240 Model 6250
Technical Assistance (800) 343-1391
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3

SPECIFICATIONS

MODELS 6240 6250
ELECTRICAL
Range
Accuracy
Resolution
Test Current Measurement
Mode Power Source
Battery Life Battery
Charging Power
Management Low Battery
Indication Memory
MECHANICAL
Dimensions
Weight Index of
Protection
DISPLAY
Display Type
Size
Blacklight
Color
COMMUNICATION
Interface Port
ENVIRONMENTAL
Operating Temperature
Storage Temperature
SAFETY
Safety Rating Double
Insulation CE Mark
Catalog No.
4000μΩ 40mΩ 400mΩ 4000mΩ 40Ω 400Ω 5.000mΩ 25.000mΩ 250.00mΩ 2500.0mΩ 25.000Ω 250.00Ω 2500.0Ω
0.25% of Reading
± 2cts
Ω 10μΩ 0.1mΩ 1mΩ 10mΩ 100mΩ 0.1μΩ Ω 10μΩ 0.1mΩ 1mΩ 10mΩ 100mΩ
10A 1A 1A 100mA 10mA 10mA 10A 10A 10A 1A 100mA 10mA 1mA
0.25% of Reading
± 2cts
Single test start/stop or auto test and store of multiple measurements
blinks when battery needs changing displays when battery needs changing
Data in memory can be reviewed on the instrument display,
10.70 x 9.76 x 7.17" (270 x 250 x 180mm) 10.63 x 9.84 x 7.09" (270 x 250 x 180mm)
14° to 132°F (-10° to 55°C); 10 to 85% RH 14° to 132°F (-10° to 55°C); 10 to 80% RH (non-condensing)
-40° to +158°F (-40° to +70°C); 10 to 90% RH -40° to 140°F (-40° to 60°C)
0.25% of Reading
± 2cts
Up to 850, 10A tests Approximately 5000, 10A tests
Internal 110/230V
User selectable power save mode Display powers down after 1, 5 or 10 minutes of inactivity (operator selectable)
Stores up to 99 test results
on a PC or via direct printout
IP53 (case open); IP54 (case closed) IP53 (case open); IP64 (case closed)
4000-count LCD Large 50,000-count digital
Optically isolated USB a-pin, RS-232
EN61010-1 300V CAT II EN 61010-1, 50V CAT III
0.25% of Reading
± 2cts
ac, 50/60Hz charger Internal 120/240Vac, 45/400Hz line voltage
10 lbs. (4.5kg) 8.1 lbs (3.69kg)
2129.80 2129.81
0.25% of Reading
± 2cts
Safety yellow case; gray faceplate UL94 V-O
0.25% of Reading
± 2cts
Rechargeable 6V, 8.5Ah NiMH batteries
4 x 2.25" (102 x 57mm)
Blue electroluminescent
0.15% of
Reading +
Yes
Yes
0.05% of
Reading +
Ω
Selectable: Inductive (continuous test), Resistive (instantaneous test)
Data in memory can be reviewed on the instrument display,
Ω
0.05% of
Reading +
Stores up to 1500 test results
0.05% of
Reading +
30μΩ
on a PC or via direct printout
0.3mΩ
or Auto (multiple tests)
0.05% of
Reading +
3mΩ
0.05% of
Reading +
30mΩ
0.05% of
Reading +
300mΩ
4
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Technical Assistance (800) 343-1391

SOFTWARE

Data Analysis and Reporting Software
Features
Configure from your PC Customize views, templates and reports to your
exact needs
Create and store a library of configurations that can
be used with the Models 6240 & 6250 as needed
Display test results
Print reports using standard included templates or
custom templates you design
Statistical presentation of measurements.
Clean, easy-to-read report of test results.
Technical Assistance (800) 343-1391
All set up functioning available from one screen.
Easily documents statistics about user and test site to be stored with the data.
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5
CONSTRUCTION
Model 6240
AC line recharging receptacle
Kelvin terminals
Communication
USB
port
Rotary selection
switch
Large multi-line
backlit liquid
crystal display
Start/Stop
button
* Five function
buttons
* Function buttons allow direct access to data storage and retrieval, polarity reversal, auto/manual measurement and displayed values.

FUNCTIONAL DISPLAY

Power save indicator
Battery charge indicator
Caution indicator
Polarity indicator
Overheating indicator
Reading hold indicator
Average indicator when polarity reversal is in use
Memory location indicator
Secondary indicator ­test current, voltage, stored measurements
Active
comport
indicator
Memory
indicators
Memory use
indicators
Measurement
units
Primary
indicator -
Resistance
measurement
Measurement
units
6
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CONSTRUCTION
Model 6250
AC line recharging receptacle
Kelvin terminals
Communication/
remote operation
port
RTD temperature
input
Rotary selection
switch
Large multi-line
backlit liquid
crystal display
Start/Stop
button
Eight function
buttons

FUNCTIONAL DISPLAY

Temperature correction active
Buzzer active
Alarm 1 HIGH set point active
Measurement range
Test current
Metal type
(Copper)
Reference
temperature
Resistance
measurement
Measurement
units
Test in
process
Standby
Test mode (Resistive)
Test mode (Inductive)
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7

ACCESSORIES

Kelvin clips, set of two, (1-10A) 10 ft
Catalog #2118.79
Kelvin clips, set of two, (1-10A) 20 ft
Catalog #2118.80
Kelvin clips, set of two,
(10A – Hippo) 10 ft are included with Model 6250
Catalog #1017.84
Kelvin probes,
set of two, spring loaded
(1A) 10 ft Catalog #2118.73
(1A) 20 ft Catalog #2118.74
RTD Temperature Probe with
7 ft extension cable
Catalog #2129.96 (model 6250 only)

ORDERING INFORMATION

10A Micro-Ohmmeter Model 6240 ............................................................................................................ Cat. #2129.80
Includes set of two 10 ft Kelvin clips (10A - Hippo), NiMH rechargeable battery pack, optical USB cable, US 115V power cord, one pad of measurement results forms,
®
DataView
10A Micro-Ohmmeter Model 6250 ............................................................................................................ Cat. #2129.81
Includes set of two 10 ft Kelvin clips (10A - Hippo), NiMH rechargeable 6V battery pack, one RS-232 DB9 F/F 6 ft null modem cable, US 115V power cord, extra large tool bag, quick reference guide, one pad of measurement result forms, DataView® software CD, product warranty registration card and user manual.
Accessories (Optional)
Kelvin Clips (10A – Hippo), set of two, 10 ft RTD Temperature Probe (plug into faceplate for ambient temperature) for Model 6250 RTD Temperature Probe with 7 ft extension cable for Model 6250 Kelvin Clips (10A – Hippo), set of two, 20 ft Kelvin Probes (1A – spring loaded), set of two, 10 ft Kelvin Probes (1A – spring loaded), set of two, 20 ft Kelvin Clips (1-10A), set of two, 10 ft Kelvin Clips (1-10A), set of two, 20 ft
software, extra large tool bag, two spare fuses (12.5A), product warranty and registration card and a user manual.
................................................................................................................. 1017.84
....................................................................... 2129.95
........................................................................................... 2129.96
................................................................................................................. 2118.70
......................................................................................................... 2118.73
......................................................................................................... 2118.74
........................................................................................................................ 2118.79
........................................................................................................................ 2118.80
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United States & Canada
Chauvin Arnoux®, Inc. d.b.a. AEMC
200 Foxborough Blvd. Foxborough, MA 02035 USA
(508) 698-2115 • Fax (508) 698-2118
Customer Support
for placing an order, obtaining price & delivery
customerservice@aemc.com
Sales & Marketing Department
for general sales and marketing information
sales@aemc.com marketing@aemc.com
Repair & Calibration Service
for information on repair & calibration
repair@aemc.com
®
Instruments
United States & Canada (continued)
Technical & Product Application Support for technical and application support
techinfo@aemc.com
Webmaster
for information regarding www.aemc.com
webmaster@aemc.com
South America, Central America, Mexico & the Caribbean
Chauvin Arnoux®, Inc. d.b.a. AEMC
15 Faraday Drive Dover, NH 03820 USA
export@aemc.com
®
Instruments
Australia & New Zealand
Chauvin Arnoux®, Inc. d.b.a. AEMC
15 Faraday Drive Dover, NH 03820 USA
international@aemc.com
®
Instruments
All other countries
Chauvin Arnoux® SCA
190, rue Championnet 75876 Paris Cedex 18, France Tel 33 1 44 85 45 28 Fax 33 1 46 27 73 89
info@chauvin-arnoux.com www.chauvin-arnoux.com
Call the AEMC® Instruments Technical Assistance Hotline for immediate consultation with an applications engineer: (800) 343-1391
Chauvin Arnoux®, Inc. d.b.a AEMC® Instruments • 200 Foxborough Blvd. • Foxborough, MA 02035 USA • (800) 343 -1391 • (508) 698-2115 • Fax (508) 698-2118
Export Department: (978) 526-7667 • Fax (978) 526-7605 • E-mail: export@aemc.com
950.BR-6240_6250_0411Rev01 Printed in the USA
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