OPERATOR MANUAL EXLRT
Ref: XLR-104 © 2020 MK Test Systems Ltd Page 6 of 28
2 HARDWARE
Product overview
The ExLRT is a battery-operated device that is designed to measure the resistance of complex
constructed loops for the use of electrically bonding parts within structures and sub-frames. It has an
additional joint mode that can measure the bond joints within the loops.
The ExLRT uses current couplers that non-intrusively couple an AC signal into the loop. A drive coupler
is used to inject the signal with a known voltage and a second coupler is used to measure the current.
To measure individual joints within the loop, a pair of joint probes are used to measure the voltage
presented across the joint resistance. Knowing the voltage and current for each test, the ExLRT
calculates the resistance.
ExLRT
Battery
Charger
AC-DC Power Supply
Loop Cable
Joint Cable
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