Fluke 6109A and 7109A liquid baths provide batch calibration of sanitary and industrial temperature sensors. The working area accommodates up to four tri-clamp sensors at once. The high-temperature 6109A operates from 35 to 250 °C; the cooled 7109A covers −25 to 140 °C, with a −15 °C lower limit when the cover is removed. A 2.5-liter tank and stainless-steel casing simplify cleaning and maintenance. The −P versions add process electronics for a reference probe and device-under-test signals. Select the fluid, probes and holders for the required range and configuration.