Fluke 721EX-3650 Pressure Calibrator Repair

Description

Fluke 721EX-3650 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 3650 variant pairing a higher static range with a 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-3650 for oil & gas and hazardous-area instrument teams.

Common Fluke 721EX-3650 problems we fix

• Dual-sensor drift — one or both internal sensors drifting out of spec, recalibrated against standards.
• Pressure-hold / leak faults — a leak that stops a range holding applied pressure, 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-3650 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.