Operazioni Code Description
HQ Cooling tower (natural draft)
HX Spiral heat exchanger
HY Cryogenic heat exchanger
HZ Miscellaneous heat transfer equipment
EG Electric generators (AC or DC)
MW Aero Generator
FS FLOW SWITCH
FSH FLOW SWITCH HIGH
FSHH FLOW SWITCH HIGH HIGH
FSHL FLOW RATE SWITCH HIGH LOW
FSL FLOW RATE SWITCH LOW
FT FLOW TRANSMITTER
LDT LEVEL DIFFERENTIAL TRANSMITTER
LG LEVEL GLASS GAUGE
LSH LEVEL SWITCH HIGH
LSHH LEVEL SWITCH HIGH HIGH
LSHL LEVEL SWITCH HIGH LOW
LSL LEVEL SWITCH LOW
LSLL LEVEL SWITCH LOW LOW
LT LEVEL TRANSMITTER