Description
Fluke 744 Process Calibrator Repair
The Fluke 744 is a process calibrator – it sources and measures the signals a plant’s instrumentation runs on: milliamp loops, voltage, RTDs, thermocouples, frequency and pressure through external modules. It is several instruments in one case, so faults are usually confined to one function.
The Fluke 744 is repaired at June Company by technicians who work on this class of instrument daily, for process instrument technicians, plant calibration teams, refinery maintenance crews, and field service engineers. Every instrument is repaired at component level and verified against reference standards before it ships back, with the measured results documented.
Common Fluke 744 problems we fix
- HART communication faults – the instrument no longer talking to the transmitter, which is separate from any measurement problem.
- Pressure module not recognised – frequently the interface in the calibrator rather than a failed module.
- 24V loop supply not driving a transmitter.
- Display, keypad or interface faults.
- Battery, charging or power faults.
- mA source or measure out of tolerance – the function these instruments are used for most, and the first place drift shows.
- One function failing while the others work.
- Thermocouple or RTD readings inaccurate.
FAQs
My pressure module is not recognised. Module or calibrator? We test both. It is more often the interface in the calibrator, and swapping modules is how that gets misdiagnosed.
Only the RTD function is wrong. Smaller repair? Usually. The measurement paths are largely independent, so a single failing function tends to point at something specific.
Every repair carries a 90-day parts-and-labor warranty, with a firm quote before any work begins. Email us or submit a service request.





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