Fluke Process Instruments Furnace Tracker® TB4900 and TB4000 Thermal Barrier Series TB4900 SERIES The DATAPAQ® 4900 thermal barrier series combines experience with advanced design technology to give maximum protection to the data logger as the system passes through the furnace. Using a balanced combination of micro-porous insulation and phase-change heat sink, the data logger is kept at a maximum temperature of 70 °C (158 °F) throughout the process, even though the external temperature may exceed 1000 °C (1832 °F). The TB4900 series is ideal for use in heat treatment, aluminum, steel and uniformity survey applications. FEATURES AND BENEFITS ■ Operating temperatures up to 1000 °C (1832 °F) ■ Exterior and handles (including fasteners), made from 310 stainless steel, provide the best resistance to oxidation at extreme temperatures ■ DATAPAQ Floating Plate® design technology minimizes distortion and prolongs life ■ Health and safety preferred mullite textile barrier lining eliminates the need for ceramic fiber ■ User-replaceable mullite textile wear strips to protect the thermocouple exits and minimize maintenance costs ■ Rounded edges on barrier lid and base to alleviate the effects of thermal stress ■ Dual exit versions available for 20+ channel operation TECHNICAL SPECIFICATIONS All figures are for average and not maximum temperature in still air atmosphere. For mixed atmospheres durations contact DATApAQ. Compatible data loggers: TP3, DQ1860, Tpaq21 Thermocouples: 1,6 and 2 mm / 0.5 and 0.7 in mineral insulated

TB4000 series The TB4000 thermal barrier series work in two stages to keep the logger at a safe operating temperature as it travels through the furnace at temperatures up to 800 ºC (1472 ºF). Micro-porous insulation slows down the passage of heat. The second layer of insulation features a unique heat sink with phase-change material that maintains an internal temperature of 70°C (158°F). FEATURES AND BENEFITS Operating temperatures up to 800 °C (1472 °F) Rugged 304 stainless steel construction Micro-porous insulation provides the best thermal protection of any known material Various heights...