Traceability Backbody Furnace NRLM Type Comparison Blackbody Furnaces IR-R24, IR-R26 High Temperature Comparison Blackbody Furnaces IR-R27     NRLM type comparison blackbody furnaces, which have been jointly developed with the National Research Laboratory of Metrology, are large opening blackbody furnaces for calibration of radiation thermometers, and a high temperature comparison blackbody furnace uses a standard radiation thermometer for comparison calibration.NRLM Type Comparison Blackbody Furnace Features(IR-R24, IR-R26) The cavity is profiled as a double cone and the high emissivity is realized with a large opening. For low temperature, a platinum resistance thermometer (sold separately) is used as a standard thermometer. For medium temperature, a 0.9µm standard radiation thermometer (sold separately) is used for comparison calibration. Long-term stability Models Models Types IR-R24 NRLM type comparison blackbody furnace For low temperature IR-R26 For medium temperature IR-R27 High temperature comparison blackbody furnace Specifications Model NRLM type comparison blackbody furnace High temperature comparison blackbody furnace For low temperature IR-R24 For medium temperature IR-R26 IR-R27 Temperature range 50 to 450°C 200 to 1050°C 800 to 1450°C Maximum temperature 500°C 1100°C 1500°C Maximum temperature rising time About 2 hours About 4hours About 2 hours Cavity opening diameter 60mm 50mm 30mm Cavity emissivity 0.993 0.997 0.99 Cavity section shape Double cone type Cylindrical cone type Temperature stability ± 0.15K/30 minutes ± 0.25K/30 minutes ± 0.5K/30 minutes Power supply 100VAC, Single phase 200VAC, Single phase Power consumption Maximum 500VA Maximum 1200VA Maximum 2500VA Weight About 30kg About 32kg About 36kg Page Top   BACK