Description
Fluke 7109A Calibration Bath Repair
The Fluke 7109A (Hart Scientific) is a portable calibration bath — it heats/cools and stirs a liquid bath to precise, uniform, stable temperatures (covering a lower range than the 6109A) to calibrate temperature sensors in the lab and field. Its precision depends on the heater/cooling, the stirring system, the temperature control and reference, and the bath-fluid handling, which is where service focuses.
FlukeMeterRepair.com repairs and calibrates the Fluke 7109A for temperature-calibration labs and pharma/process teams.
Common Fluke 7109A problems we fix
- Heating-element replacement — won’t reach the setpoint, the heater replaced.
- Stirrer-mechanism rebuild — poor uniformity from a failing stirrer, rebuilt.
- Controller / reference drift — the controller or reference sensor reading the wrong setpoint, recalibrated against standards.
- Stability or uniformity out of spec — control-loop faults, corrected.
- Leak or interface faults.
FAQs
My 7109A won’t hold temperature or stir evenly — fixable? Yes. Heater, stirrer, and controller faults are repairable, then the bath is recalibrated so temperature is accurate, stable, and uniform, with a NIST-traceable certificate.
Is uniformity verified? Yes — stability and uniformity are checked against our reference standards.
Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or request service.





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