# Operazioni Code Description
101 HQ Cooling tower (natural draft)
102 HX Spiral heat exchanger
103 HY Cryogenic heat exchanger
104 HZ Miscellaneous heat transfer equipment
105 EG Electric generators (AC or DC)
106 MW Aero Generator
107 FS FLOW SWITCH
108 FSH FLOW SWITCH HIGH
109 FSHH FLOW SWITCH HIGH HIGH
110 FSHL FLOW RATE SWITCH HIGH LOW
111 FSL FLOW RATE SWITCH LOW
112 FT FLOW TRANSMITTER
113 LDT LEVEL DIFFERENTIAL TRANSMITTER
114 LG LEVEL GLASS GAUGE
115 LSH LEVEL SWITCH HIGH
116 LSHH LEVEL SWITCH HIGH HIGH
117 LSHL LEVEL SWITCH HIGH LOW
118 LSL LEVEL SWITCH LOW
119 LSLL LEVEL SWITCH LOW LOW
120 LT LEVEL TRANSMITTER