Hart

History

Hart Scientific built a broad temperature-calibration portfolio spanning primary standards, precision readouts, probes and sensors, calibration baths, industrial dry wells, furnaces, and calibration software. The catalog reflects that scope through manuals for instruments such as 1504 thermometer readouts and 9105 and 9107 dry-well calibrators, as well as resistance thermometers and baths. Those manuals should be interpreted as a temperature-metrology lineage rather than as products from the unrelated HART industrial communications protocol.

Fluke's official brand history says Hart Scientific was acquired in 2001 and later joined other calibration businesses under the Fluke Calibration name. Current Fluke material presents Hart Scientific temperature calibration as part of Fluke Calibration and describes the former brand's standards, readouts, probes, baths, and industrial calibrators. Because the Hart name now functions primarily as a historical product and expertise identity, this draft classifies it as a legacy brand, leaves operating status unknown, and avoids assigning a current standalone headquarters or legal name.

Equipment specialties

• temperature calibration standards
• precision thermometer readouts
• platinum resistance thermometers and probes
• calibration baths and dry-well calibrators
• temperature-calibration software