This standard specifies the varieties, basic parameters, technical requirements, test methods, inspection rules, markings, packaging and storage of B series pneumatic base differential pressure instruments. This standard applies to B series pneumatic base instruments BCA type and BCJ type differential pressure instruments. Other pneumatic base differential instruments can also be used as a reference.
JB/T 8217.4-1999 history
1999JB/T 8217.4-1999 B series pneumatic field mounted conreollers.Differential pressure instruments