620UK-B Operation and Maintenance Manual – Rev J – January 2020
Page 3
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Austin, TX 78737
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SECTION A: RECEIVING AND INITIAL INSPECTION
A-1 Introduction to AMPTEC 620UK-B Bonding Milliohmmeter
Originally designed at the request of Lockheed Martin’s engineering team, the AMPTEC
620UK-B Bonding Milliohmmeter has become the standard in its industry, being used in
maintenance wings across the globe. The 620UK-B meter provides extremely safe and
reliable resistance testing on explosive or volatile devices at all times. Our various
safety board approvals (found in section F on page 18) demonstrate our dedication to
making quality products that are safe to use in a variety of atmospheres and
environments.
The AMPTEC 620UK-B Bonding Milliohmmeter is UL-913 approved as an intrinsically
safe apparatus for use in Class 1, Division 1, Groups A, B, C, and D locations for
ambient temperatures from -20° C to 50° C (T3 zones). The AMPTEC 620UK-B meter is
also MIL. STD. 810 MTD. 511 approved for use in explosive and volatile atmospheres.
Devices/processes that the 620UK-B meter can be used for include, but are not limited
to:
Electrical chassis ground connections and continuity determination(s) on
electrical subsystems used in general purpose aircraft, helicopters, fighter jets,
UAVs, drones, missiles, etc.
Continuity determinations on fuses, electrical cable connections, heavy duty
metal to metal connections
Bonding measurements for metal to metal connections
Featuring an all metal case with a separate F.O.D. resistant battery compartment, the
AMPTEC 620UK-B meter has been specifically designed to keep ease of use and
reliability in mind. When it comes to safety, the 620UK-B meter has failsafe output
circuitry pioneered by AMPTEC to ensure that test current levels do not exceed the
specified failsafe current, even in worst-case component failure situations.
We’re extremely proud of the engineering and quality that goes into each and every one
of our products we’ve created over the past 20 years. We hope you enjoy working with
our 620UK-B meter and encourage you to contact us if you have any questions or
comments. Thank you for your business!
A-2 Unpacking and Inspection
Should the box you receive your product in be damaged upon its arrival, notify AMPTEC
and the shipping carrier immediately. If your 620UK-B meter appears damaged, the
carrier’s agent should authorize repairs before the unit is returned to our facility.
If the unit fails to operate or meet performance specifications (listed in section B on
page 5) notify the carrier’s agent and AMPTEC immediately. Retain the shipping
container for the carrier’s inspection.
