Abstract
Refractory and corrosion resistant diaphragm type transmitter was fabricated for HI cycling pressure sensor of IS hydrogen production process and tested its high cycle fatigue properties. Ta/SUS316 was jointed by ark welding technique and this joint was applied to the diaphragm part of this transmitter. After fatigue test, it is concluded that this pressure sensor still survive over 5,000,000 cycle within 0.44%F.S./K error and fatigue test has been continued over 5,000,000 cycles.
