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620LK | Intrinsically Safe Bonding Ohmmeter

The AMPTEC 620LK bonding ohmmeter is an affordable, highly accurate, and intrinsically safe electrical bond tester. This meter is capable of performing bond measurements on a variety of components and metal-to-metal connections. The 620LK has been independently UL-913 certified, ensuring quality and safety at each step of manufacturing. Due to its safety certifications and high level of accuracy, the Amptec 620LK meter is the choice bond tester for many commercial airliners, while its sibling the 620UK-B is in countless USAF programs.

This item is not available for purchase through our website. Please contact us for more information.

Range 200 mΩ 2 Ω
Nominal Current 100 mA 100 mA
Resolution .01 mΩ .1 mΩ
Accuracy ± .05% of reading & range ± .05% of reading & range
Terminal Trident Display 4 1/2 digit LCD
Update 1 reading per 3 seconds Power 4ea AA 1.5 VDC alkaline batteries
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
Ordering Information

Our 620LK bonding ohmmeter is available for purchase in two separate packages, and is compatible with our 630/640/641 Series accessory line.
For specific pricing information or to place an order for a 620LK meter, please contact us today.

Package Description Price
Commercial Air Package Includes 620LK bonding ohmmeter, (630-100) padded case, (630-406S) probes, & U.S. N.I.S.T Calibration Certificate. Request a quote!
LM Package Includes 620LK bonding ohmmeter, (630-100) padded case, (630-405S) probes, (630-406S) probes, spare set of (OP-PT-SP) spear probe tips, & U.S. N.I.S.T Calibration Certificate. Request a quote!
Lead/Probe Sets The 620LK bonding ohmmeter is compatible with our 630/640/641 Series probe/lead sets and accessories. Please note that not all of our accessories are listed online.

Compatible Accessories
Part Number Description Link Price
630-100 Padded case for Bonding Ohmmeters and Ground Continuity Testers Click Here $95.00
630-406S 5′ spear Kelvin probe set Click Here $265.00
630-304 5′ banana jack calibration lead set Click Here $265.00
630 Series Leads The 620LK is compatible with our 630 Series probes and leads Click Here