Fluke 5320A Multifunction Electrical Tester Calibration Services

ISO 17025 | ilac • MRA | ANAB Accredited

The 5320A calibrates your installation testers, PAT testers, and insulation resistance testers. It needs a provider who understands electrical safety test equipment as well as it does.

Few labs in North America hold the accreditation and technical depth to calibrate this instrument class – and even fewer deliver within the turnaround time you need. Transcat is one of them.

Why the Fluke 5320A Requires A Specialized Calibration Provider

The 5320A exists to replace a bench full of decade boxes, resistors, and custom fixtures with one instrument capable of calibrating installation testers, PAT testers, loop and RCD testers, and insulation resistance meters.

That specialization is valuable — and it's also why so few labs are equipped to calibrate it correctly. A provider needs precision resistance standards spanning milliohms to gigaohms, high-voltage sourcing capability, and familiarity with electrical safety test methods most general calibration labs never encounter.

If your 5320A goes out of tolerance, every safety compliance test your team performs with it is now in question. At Transcat, you’ll find the experts who can give you the confidence to maintain your lab’s accuracy weeks before other service providers.

What's Included in a Fluke 5320A Calibration Service

We calibrate the Fluke 5320A across its complete functional range:

Low-ohms resistance sourcing from milliohms through the kilohm range, in two-wire and four-wire modes
High-ohms, high-voltage resistance sourcing for insulation resistance testing up to and beyond 1 kV
Loop and line impedance simulation
RCD and GFCI trip current and trip time simulation
AC and DC voltage and current outputs used across insulation, continuity, and leakage current test functions

Every calibration is documented to ISO/IEC 17025:2017 scope, with full traceability and measurement uncertainty reported on the certificate.

How Fluke 5320A Calibration Accuracy Affects Electrical Safety Compliance Testing

The 5320A supports your team's electrical safety compliance workload directly:

Measurement confidence

an inaccurate 5320A puts every installation tester and PAT tester it verifies at risk of drift

Audit readiness

electrical safety compliance is one of the most scrutinized areas in a regulated audit; your traceability chain needs to hold up

Customer commitments

clients relying on your PAT or installation test certificates are trusting a chain that starts with this calibrator

Downtime risk

this is often a single point of failure for an entire electrical safety testing program; an extended outage stalls compliance work across your organization

Why Choose Transcat for Fluke 5320A Calibration

Uncommon capability. Few providers maintain the resistance and high-voltage standards required to calibrate the 5320A at full scope.

Electrical safety test expertise. Our metrologists understand installation testing, PAT testing, and insulation resistance methods, not just general electrical calibration.

Reliable turnaround. We understand compliance deadlines don't move, and we plan your calibration around them.

Documented, defensible results. Full uncertainty budgets and traceability on every certificate, ready for your next audit.

Transcat has spent over 60 years building calibration capability most providers never develop. We operate 22 commercial labs accredited to ISO/IEC 17025:2017 across the United States and Canada, performing over 300,000 accredited calibrations annually.

We're also the only publicly traded commercial calibration provider in North America (NASDAQ: TRNS) - a level of accountability and consistency you won't find at a small independent shop.