Platinum Resistance Thermometer

Demonstrates the principle of platinum resistance thermometry and its application in precise temperature measurements using a bridge method such as Cary-Foster’ bridge. It comprises a length of fine platinum wire wound non-inductively on a mica frame and soldered to copper leads. Also provided with a pair of compensating leads, with all the four wires termiting in 4mm termils at the top. Complete assembly enclosed in a borosilicate tube sealed at the top. Since the connections are soft soldered, the resistance thermometer is suitable for low temperature work up to 150oC.