equa - exte
- equal operator block
- equipment test system
- ER
- ERP
- ERRC
- ERRE
- ERRF
- ERRL
- error code and the details of the error
- error-caused line number
- error-caused plane number
- error-caused program unit
- error-caused step number
- ERRP
- ERRS
- ES
- ESB
- ESD
- estimated equivalent dead time
- estimated equivalent first-order lag constant
- estimated equivalent process gain
- estimation accuracy error
- etching
- ETS
- evaporation feed pump
- EWS
- exact totalization pulse train input
- exact totalization pulse train input conversion
- excess sludge pump
- exhaust fan
- EXP
- expansion gland
- expansion joint
- expert system
- explosionproof
- exponential averaging
- exponential block
