Siemens SITRANS FC720 Operating Instructions Manual page 3

8.7 Accuracy of temperature ................................................................................................................... 33
8.8 Repeatability ..................................................................................................................................... 34
8.9 Calibration conditions........................................................................................................................ 34
8.9.1 Mass flow calibration and density adjustment ..................................................................... 34
8.9.2 Calibration for gases ............................................................................................................ 35
8.10 Process conditions ............................................................................................................................ 35
8.10.1 Process pressure effect ....................................................................................................... 35
8.10.2 Process fluid temperature effect .......................................................................................... 35
9 Operating conditions ................................................................................................................................ 37
9.1 Process conditions ............................................................................................................................ 37
9.1.1 Process fluid temperature range.......................................................................................... 37
9.1.2 Density ................................................................................................................................. 37
9.1.3 Pressure............................................................................................................................... 38
9.1.4 Insulation and heat tracing................................................................................................... 41
9.1.5 Secondary containment ....................................................................................................... 42
9.2 Ambient conditions............................................................................................................................ 42
9.2.1 Allowed ambient temperature for sensor ............................................................................. 44
9.2.2 Temperature specification in hazardous areas .................................................................... 46
10 Mechanical specification .......................................................................................................................... 52
10.1 Design ............................................................................................................................................... 52
10.2 Material ............................................................................................................................................. 54
10.2.1 Sensor.................................................................................................................................. 54
10.2.2 Transmitter........................................................................................................................... 54
10.2.3 Nameplates.......................................................................................................................... 55
10.2.4 Heat tracing.......................................................................................................................... 55
10.3 Process connections, dimensions and weights of sensor................................................................. 56
10.4 Transmitter dimensions and weights................................................................................................. 71
11 Transmitter................................................................................................................................................. 73
11.1 Electrical interfaces ........................................................................................................................... 74
11.1.1 Analog inputs and outputs ................................................................................................... 74
11.1.1.1 Analog outputs ..................................................................................................................... 74
11.1.1.2 Analog inputs ....................................................................................................................... 76
11.1.1.3 Analog output specification .................................................................................................. 77
11.1.2 Digital inputs and outputs .................................................................................................... 77
11.1.2.1 Digital outputs ...................................................................................................................... 77
11.1.2.2 Digital inputs ........................................................................................................................ 81
11.1.3 HART ................................................................................................................................... 81
11.1.4 Modbus ................................................................................................................................ 83
11.1.5 PROFIBUS PA..................................................................................................................... 83
11.2 Power supply..................................................................................................................................... 85
11.3 Cable specifications .......................................................................................................................... 85
12 Installation ................................................................................................................................................. 86
12.1 Location and position of installation .................................................................................................. 86
12.1.1 Sensor installation position .................................................................................................. 86
12.2 Installation instructions...................................................................................................................... 87
12.2.1 Installation dimensions ........................................................................................................ 87
11.09.2023A5E52748387-AA, 2023/09
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