Description
Fluke 721EX-1603 Pressure Calibrator Repair
The Fluke 721EX is an intrinsically safe dual-sensor pressure calibrator — a hazardous-area-rated version of the 721 that measures two independent pressure ranges at once (this 1603 variant pairing a low static range with a low line range) plus the mA loop signal, for gas-flow and custody-transfer measurement in Ex/hazardous environments. Its precision lives in the two internal pressure sensors and the mA circuit, with intrinsic-safety integrity that must be preserved through repair.
FlukeMeterRepair.com repairs and calibrates the Fluke 721EX-1603 for oil & gas and hazardous-area instrument teams.
Common Fluke 721EX-1603 problems we fix
- psi-accuracy / sensor drift — one or both internal sensors drifting out of spec, recalibrated against standards.
- Leak-rate / pneumatic faults — a leak that stops a range holding applied pressure or fails a leak check, repaired.
- Over-pressure damage — sensor damage from an over-range event on either range, assessed and repaired.
- mA measurement faults — the loop measurement, recalibrated.
- Display or battery faults — serviced while preserving intrinsic-safety integrity.
FAQs
One range on my 721EX-1603 reads wrong — fixable? Yes. Sensor and leak faults are repairable and recalibrated against our reference standards so both ranges and the mA function are accurate, with a NIST-traceable certificate and intrinsic-safety integrity preserved.
Are both sensors verified? Yes — each pressure range is 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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