Calibration Baths
Calibration Baths
Calibration baths are precision liquid-medium temperature calibrators that maintain a highly uniform, stable temperature environment for immersing and calibrating temperature sensors such as thermometers, thermocouples, RTDs, and thermistors. By using circulating liquids — water, silicone oil, or specialty fluids depending on the temperature range — calibration baths achieve exceptional temperature uniformity and stability superior to dry block calibrators, making them the preferred choice for high-accuracy laboratory and metrology work.
These instruments are essential in national metrology laboratories, accredited calibration facilities, and precision manufacturing environments where tight measurement uncertainty is required. Calibration baths typically cover a wide temperature range from sub-zero to several hundred degrees Celsius, with stabilities often better than ±0.01°C, and allow simultaneous immersion of multiple sensors for efficient throughput.
Typical Applications
- High-accuracy calibration of reference thermometers and SPRT sensors in primary and secondary metrology laboratories
- Simultaneous immersion calibration of multiple sensors in industrial calibration facilities
- Pharmaceutical temperature validation in compliance with USP, EP, and GMP requirements
- Calibration of process temperature sensors in aerospace, defense, and energy testing facilities
- Viscosity measurement and thermal property testing requiring stable liquid temperature environments
Popular Brands
Fluke Calibration is the dominant manufacturer in this category, offering a complete range from portable micro-baths to large-volume laboratory baths covering temperatures from -35°C to over 300°C. Their baths are widely deployed in ISO/IEC 17025 accredited laboratories and pharmaceutical validation environments worldwide.
