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620LK-HR | High Resolution Bonding Ohmmeter

The AMPTEC 620LK-HR is the high resolution version of the 620LK. It is an affordable and highly accurate electrical bond tester. Additionally, the 620LK-HR has all the ranges of the standard 620LK, as well as both the lower 20 mΩ and higher 20 Ω ranges. Originally designed for Lockheed Martin, the 620LK product line comes from a long lineage of ultra-safe testing equipment that now occupies a more commercialized space.

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Range 20 mΩ 200 mΩ 2 Ω 20 Ω
Nominal Current 1 A 100 mA 100 mA 10 mA
Resolution .001 mΩ .01 mΩ .1 mΩ 1 mΩ
Accuracy ± .025% of range ± .025% of range ± .025% of range ± .025% of range
Terminal Trident Display 4 1/2 digit LCD
Update 1 reading per 3 seconds Power Internal rechargeable battery pack
Weight 3 lbs. Dimensions 7.69″ x 7.56″ x 3″
Max. Internal Voltage 5 VDC Open Circuit ~5 VDC
Operating Temperature Range -20° to 50° C Storage Temperature Range -40° to 75° C
Temperature Coefficient ± .0025% per 1° C Max. Input Voltage 250 VDC
Compatible Accessories
Part Number Description Link
HR-DC Battery Charger for 620LK-HR meter Click Here
630-100 Padded case for Bonding Ohmmeters and Ground Continuity Testers Click Here
630-406S 5′ spear Kelvin probe set Click Here
630-304 5′ banana jack calibration lead set Click Here
630 Series Leads The 620LK-HR is compatible with our 630 Series probes and leads Click Here