Temperature Sensors: Type - Temperature Sensor; Connection Size - 3/4 in. NPT; Temperature Measurement Range - -73 to 482 deg C (-100 to 900 deg F); Material - Housing - Zinc-Plated Cast-Iron Body; Enclosure Rating - NEMA 4, 7; Additional Information - Sensor Sheath: 316 Stainless Steel, Accuracy Plus/Minus 1 deg F (0.5 deg C) at 32 deg F (0 deg C), Resistance: 100 ohms at 0 deg C