Continuous type wire expansion coefficient measuring instrument

Application Number: 00124996
Application Date: 2000.09.29
Publication Number: 1346052
Publication Date: 2002.04.24
Priority Information:
International: G01N25/16
Applicant(s) Name: China Petrochemical Corp.
Inventor(s) Name: Wei Ruoqi;Wang Zhenjiang;Gu Yi
Patent Agency Code: 11218
Patent Agent: wei qiangwen
Abstract The linear expansion coefficient measuring instrument which only has one thermostatic bath and can continuously control temperature is characterized by that the refrigerating coil pipe and electroheating coil pipe are mounted in a thermostatic bath together, after the signal transferred by temp.-measuring element is compared with set value, the PID temp. controller can output two control signals, one of them is provided for temp. controller to control refrigeration compressor, another signal is provided for control electrode of thyristor to control current quantity for heating coil pipe. Said invention can be used for measuring linear expansion of basic material.