This standard specifies the type and basic parameters, technical performance indicators and requirements, test methods and evaluation methods of QDZ pneumatic unit combination instrument QX series indication recording regulator. This standard applies to QDZ pneumatic unit combination instrument QX series indication recording regulator. The indicators and recorders in the QDZ pneumatic unit combination instrument can also be used as a reference.
JB/T 8214.4-1999 history
1999JB/T 8214.4-1999 QDZ process pneumatic control system.Indicating-recording controller