Micro-Ohmmeter Model 6240

The 10A Micro-Ohmmeter Model 6240 is a rugged, low resistance tester designed for both plant maintenance and field use. Utilizing a four-lead Kelvin method of testing, the Model 6240 Micro-Ohmmeter accurately measures very low resistance within 0.25%.

Resistance measurements are automatically calculated from 5 µΩ to 400 Ω with resolutions down to 1 µΩ. The Model 6240 has selectable test currents of 10 A, 1 A, 100 mA and 10 mA and includes a polarity reversal function. The Model 6240 is designed to conduct tests on both resistive and inductive material. Up to 99 measurements can be stored and printed directly to a printer or from a PC.

DataView® (included) allows you to configure the instrument, temperature-compensate the test results, store data, and print reports.

▶ Learn how to properly connect leads to AEMC® Instruments Micro-Ohmmeters (Models 6240, 6250 & 6255)

NOTE: Our complete catalog is not available for direct online purchase, refer to the Status Column for purchasing options. Items that do not have an Add to Cart button must be purchased from an Authorized Distributor.
Model Cat. # Description List Price Quantity/Status Distributor Stock Check
6240 2129.80 Micro-Ohmmeter Model 6240 (Kelvin Clips/Probes included) $3,540.00 In stock at factory. Find a Distributor
Model6240
Cat. #2129.80
DescriptionMicro-Ohmmeter Model 6240 (Kelvin Clips/Probes included)
List Price$3,540.00
In stock at factory. Find a Distributor

Model 6240 (with leads) - Cat. #2129.80: Includes extra large tool bag, optical USB cable, US 115V power cord, (2) spare fuses (12.5A), 10 ft Kelvin Clips (10A - Hippo , Cat. #1017.84) and 10 ft Kelvin Probes (1A Spring loaded, Cat. #2118.73), NiMH rechargeable battery pack*, and USB thumb drive suppled with DataView® software and a user manual.

*Can be charged during operation

Print
Specifications
Measurement Range 5.0 to 3999 µΩ 4.0 to 39.99 mΩ 40.0 ­to 399.9 mΩ 400 to 3999 mΩ 4.0 to 39.99 Ω 40.0 to 399.9 Ω
Resolution 1 µΩ 10 µΩ 100 µΩ 1 mΩ 10 mΩ 100 mΩ
Accuracy ±(0.25%R + 2ct)
Measurement Current 10.2 A ±2% 1.02 A ±2% 102 mA ±2% 10.2 mA ±2%
Open Voltage 4 to 6V
Inductance 0.5 H Max
Voltage Measurement Indication
Measurement Range 0.01 to 3.999 mV 4 to 39.99 mV 40 to 399.9 mV 0.4 to 3.999 V 4 to 4.70 V
Resolution 1 µV 10 µV 100 µV 1 mV 10 mV
Current  Measurement Indication
Measurement Range 5.0 to 39.99 mA 40.0 to 399.9 mA 0.4 to 3.999 A 4 to 11.00 A
Resolution 10 µA 100 µA 1 mA 10 mA
General Specifications
Storage Memory 99 tests, supplied with DataView® software for download and reporting
Automatic Storage of Test Results Yes
Battery Rechargeable NIMH battery pack 6V, 8.5Ah.
Battery Life 10 A ≥ 850  tests with a duty cycle of 5 seconds on and 25s off
1 A ≥ 3500 tests with a duty cycle of 5 seconds on and 25s off
100 mA ≥ 4500 tests with a duty cycle of 5 seconds on and 25s off
10 mA ≥ 5000 tests with a duty cycle of 5 seconds on and 25s off
In standby mode Battery life 4 to 6 months
Dimensions (L x W x H) 10.70 x 9.76 x 7.18” (272 x 248 x 182 mm)
Weight 10 lbs (4.5 kg)
Operating Temperature -10° to +55°C (14° to 131°F) & 10 to 85% RH
Storage Temperature (without battery) -40° to +70°C (-40° to 158°F) & 10 to 90% RH
Altitude Operating 2000 m
IP Rating IP 54 per IEC 60529 cover closed
Safety IEC/EN 61010-1 category III 50V, Pollution Degree 2

User Manuals

Model 6240

Spring-Loaded 25 A Test Probes - EN, ES, FR

Model 6240 - Español (CA France version)

Model 6240 - French (CA France version)

Battery Recharge Time / Rechargeable NiMH Notice

Kelvin Probe Lead Connection for Micro-Ohmmeters

Datasheets

Model 6240 - English

Modelo 6240 - Español

Brochures

Micro-Ohmmeter Brochure

Ground Resistance Testers Brochure

AEMC® Instruments Product Line Brochure

Rent Now

Premiere Rental Partners

Comparison Charts

Micro-Ohmmeter Comparison Chart

Micro-Ohmmeter Comparison Chart - Español

Software

DataView® Software

Application Notes

Tiempo de recarga de las baterías / Aviso de NiMH recargable

Measuring Resistance/Impedance with the Four-Wire Kelvin Method

Forms

Stored Measurement Results Form

Micro-Ohmmeter Measurement Result Form

Slope Method Calculation - Automated way of calculating the S electrode placement when using the slope method.

Calculators

Slope Method Calculation - Automated way of calculating the S electrode placement when using the slope method

Three Measurement Method

Fall-of-Potential Plot

Technical Bulletins

Watts Current Issue 05

Watts Current Issue 01

Troubleshooting

Model 6240 Error Messages

Videos

Micro-Ohmmeter Test Lead Connections

Model 6240, Part 1 - Usage and Capabilities

Model 6240, Part 2 - How To Download a Test to DataView and Create A Report

Kelvin Method Explained

Model Cat. # Description List Price Quantity/Status Distributor 
Stock Check
1017.84 Kelvin Clips 10 ft (10A - Hippo) $221.00
2118.70 Kelvin Clips 20 ft (10A - Hippo) $275.00
2118.73 Set of 2 10 ft Kelvin Probes (1A, Spring Loaded) $136.50
2118.74 Kelvin Probes 20 ft (1A, Spring Loaded) $170.00
2118.77 Kelvin Probes 10 ft (10A, Spring Loaded) $670.00 Consult Factory for Availability
2118.78 Kelvin Probes 20 ft (10A, Spring Loaded) $750.00
2118.79 Kelvin Clips 10 ft (1-10A) $120.00
2118.80 Kelvin Clips 20 ft (1-10A) $170.00
2118.82 Kelvin Clips 10 ft (1A) $399.00
2118.84 Kelvin Probes Pistol Grip 10 ft (25 A, Spring Loaded) $659.00
2118.85 Kelvin Probes Pistol Grip 20 ft (25 A) Spring Loaded $725.00
2129.91 Battery – Replacement NiMH 6 V 9000 mAH for Models 6240 for Models 6240, 6250, and 6255 $245.00
2129.92 Fuse – Set of 5, 12.5A, 500V (Fast Blow), 6.3 x 32mm for Model 6240 $14.65
2133.72 Small Classic Tool Bag for field use.
12 Exterior and 14 Interior pockets
Dimensions: 13.0 x 9.8 x 9.5" 		$36.00
2133.73 Bag – Extra Large Classic Tool Bag Replacement for Models 3945/3945-B, 6240, 6250, 6471, 6505, 5050, 5060, 5070, 8333, 8335, 8336, 8436, 8510 & PEL105
Dimensions: 18 x 9 x 12" 		$53.00
2135.41 Optical USB Cable – Replacement for Models 6240, 6470/6470-B, 6471, 6472, 6550 ,6555, 8220, 8230 & MTX 328x Series $69.25
2135.43 Inverter - 12VDC to 120VAC 200 Watt for Vehicle Use (use with Ground Testers, Megohmmeters & Micro-ohmmeters) $90.00
5000.10 Set of 5, replacement screw-on spaded lugs for ground resistance tester kits $16.00
5000.14 Power cord 115V for Micro-ohmmeters, Megohmmeters, Power Instruments, Oscilloscopes & Ground Testers $10.00
5000.62 Pin-Set of 10, replacement tips for Kelvin Probes (Cat #2118.73 & 2118.74) $27.00
5100.02 Latches - Replacement set of 2 for use with AEMC Yellow cases $13.25
2118.75 Kelvin Probes Pistol Grip 10 ft (10A, Spring Loaded)
(DISCONTINUED replaced by 2118.84) 		$0.00 Discontinued
2118.76 Kelvin Probes Pistol Grip 20 ft (10A) Spring Loaded
(DISCONTINUED replaced by 2118.85) 		$0.00 Discontinued
Model
Cat. #1017.84
DescriptionKelvin Clips 10 ft (10A - Hippo)
List Price$221.00
Model
Cat. #2118.70
DescriptionKelvin Clips 20 ft (10A - Hippo)
List Price$275.00
Model
Cat. #2118.73
DescriptionSet of 2 10 ft Kelvin Probes (1A, Spring Loaded)
List Price$136.50
Model
Cat. #2118.74
DescriptionKelvin Probes 20 ft (1A, Spring Loaded)
List Price$170.00
Model
Cat. #2118.77
DescriptionKelvin Probes 10 ft (10A, Spring Loaded)
List Price$670.00
Consult Factory for Availability
Model
Cat. #2118.78
DescriptionKelvin Probes 20 ft (10A, Spring Loaded)
List Price$750.00
Model
Cat. #2118.79
DescriptionKelvin Clips 10 ft (1-10A)
List Price$120.00
Model
Cat. #2118.80
DescriptionKelvin Clips 20 ft (1-10A)
List Price$170.00
Model
Cat. #2118.82
DescriptionKelvin Clips 10 ft (1A)
List Price$399.00
Model
Cat. #2118.84
DescriptionKelvin Probes Pistol Grip 10 ft (25 A, Spring Loaded)
List Price$659.00
Model
Cat. #2118.85
DescriptionKelvin Probes Pistol Grip 20 ft (25 A) Spring Loaded
List Price$725.00
Model
Cat. #2129.91
DescriptionBattery – Replacement NiMH 6 V 9000 mAH for Models 6240 for Models 6240, 6250, and 6255
List Price$245.00
Model
Cat. #2129.92
DescriptionFuse – Set of 5, 12.5A, 500V (Fast Blow), 6.3 x 32mm for Model 6240
List Price$14.65
Model
Cat. #2133.72
DescriptionSmall Classic Tool Bag for field use.
12 Exterior and 14 Interior pockets
Dimensions: 13.0 x 9.8 x 9.5"
List Price$36.00
Model
Cat. #2133.73
DescriptionBag – Extra Large Classic Tool Bag Replacement for Models 3945/3945-B, 6240, 6250, 6471, 6505, 5050, 5060, 5070, 8333, 8335, 8336, 8436, 8510 & PEL105
Dimensions: 18 x 9 x 12"
List Price$53.00
Model
Cat. #2135.41
DescriptionOptical USB Cable – Replacement for Models 6240, 6470/6470-B, 6471, 6472, 6550 ,6555, 8220, 8230 & MTX 328x Series
List Price$69.25
Model
Cat. #2135.43
DescriptionInverter - 12VDC to 120VAC 200 Watt for Vehicle Use (use with Ground Testers, Megohmmeters & Micro-ohmmeters)
List Price$90.00
Model
Cat. #5000.10
DescriptionSet of 5, replacement screw-on spaded lugs for ground resistance tester kits
List Price$16.00
Model
Cat. #5000.14
DescriptionPower cord 115V for Micro-ohmmeters, Megohmmeters, Power Instruments, Oscilloscopes & Ground Testers
List Price$10.00
Model
Cat. #5000.62
DescriptionPin-Set of 10, replacement tips for Kelvin Probes (Cat #2118.73 & 2118.74)
List Price$27.00
Model
Cat. #5100.02
DescriptionLatches - Replacement set of 2 for use with AEMC Yellow cases
List Price$13.25
Model
Cat. #2118.75
DescriptionKelvin Probes Pistol Grip 10 ft (10A, Spring Loaded)
(DISCONTINUED replaced by 2118.84)
List Price$0.00
Discontinued
Model
Cat. #2118.76
DescriptionKelvin Probes Pistol Grip 20 ft (10A) Spring Loaded
(DISCONTINUED replaced by 2118.85)
List Price$0.00
Discontinued

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