摘要
简述了氢气对差压变送器隔离膜片的渗透原因,介绍了采用在膜片表面镀金或陶瓷/金双涂层,以防止氢气渗透的方法。
The causes of hydrogen penetration through metal seal diaphragm of pressure difference transmitter are described.The diaphragm coated by gold or gold/ceramic dual layers is used to protect it against hydrogen penetration.
出处
《石油化工自动化》
CAS
2000年第1期55-56,共2页
Automation in Petro-chemical Industry
关键词
差压变送器
隔离膜片
氢气渗透
氢气
测量
different pressure transmitter
seal diaphragm
penetration of hydrogen
protection of penetration
