Description
Fluke 729-300G Automatic Pressure Calibrator Repair
The Fluke 729-300G is an automatic pressure calibrator — it generates and automatically regulates pressure to a setpoint with an internal pump (300 psi/g range), measures pressure and the mA loop signal, and documents results, to calibrate pressure transmitters in the field. Its precision lives in the internal pump and control, the pressure sensor, and the mA circuit, which is where service and calibration focus.
FlukeMeterRepair.com repairs and calibrates the Fluke 729-300G for process and instrument-calibration technicians.
Common Fluke 729-300G problems we fix
- psi-accuracy / sensor drift — the internal pressure sensor drifting out of spec, recalibrated against standards.
- Pump / auto-regulation faults — won’t build or automatically hold the setpoint pressure, the pump and control repaired.
- mA source/measure faults — the loop measurement drifting, recalibrated.
- Pneumatic / leak faults — leaks that stop it holding pressure, repaired.
- Display or battery faults.
FAQs
My 729-300G won’t hold the setpoint — fixable? Yes. Pump, control, and sensor faults are repairable and recalibrated against our reference standards so pressure and mA are accurate, with a NIST-traceable certificate.
Is the full range verified? Yes — pressure and mA are 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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