Description
Fluke 720A Kelvin-Varley Divider Calibration and Repair
The Fluke 720A is a Kelvin-Varley voltage divider — a precision resistive ratio standard that divides an input voltage into an extremely accurate, settable ratio for high-accuracy voltage calibration and metrology. Its precision lives entirely in the precision resistor network and switch contacts, which is where service and calibration focus.
FlukeMeterRepair.com repairs and calibrates the Fluke 720A for primary and secondary calibration labs.
Common Fluke 720A problems we fix
- Ratio accuracy out of spec — the divider ratio drifting, recalibrated against standards.
- Switch-contact faults — dirty or worn decade switch contacts causing errors or intermittents, serviced.
- Resistor-network faults — a damaged element in the network, repaired.
- Terminal faults — repaired.
- Linearity / loading faults — addressed and verified.
FAQs
My 720A ratio is off or a decade is intermittent — fixable? Yes. Contact and network faults are repairable, then the divider is recalibrated against our standards so its ratios are accurate, with a NIST-traceable certificate.
Is the ratio verified? Yes — checked against our standards.
Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or request service.
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