7.10 Data loggers ...................................................................................................................................... 55
7.11 Setup via front keys ........................................................................................................................... 56
7.12 Reset via front keys ............................................................................................................................ 58
8 Flow Sensor ................................................................................................................. 59
8.1 Ultrasound combined with piezo ceramics ......................................................................................... 59
8.2 Principles........................................................................................................................................... 59
8.3 Transit time method ........................................................................................................................... 59
8.4 Signal paths ...................................................................................................................................... 61
8.5 Flow limits ......................................................................................................................................... 61
9 Temperature sensors .................................................................................................... 62
9.1 Sensor types ...................................................................................................................................... 63
9.2 Cable influence .................................................................................................................................. 64
9.3 Installation ........................................................................................................................................ 64
9.4 Pocket sensors .................................................................................................................................. 65
9.5 Pt500 short direct sensor set ............................................................................................................. 66
10 Power supply ............................................................................................................ 67
10.1 Built-in 2 x AA-cell lithium battery ...................................................................................................... 67
10.2 Built-in D-cell lithium battery .............................................................................................................. 68
10.3 Battery lifetimes of 2 x AA-cell ............................................................................................................ 69
10.4 Battery lifetimes of D-cell ................................................................................................................... 70
10.5 Supply Module 230 VAC ..................................................................................................................... 71
10.6 Supply Module 24 VAC ....................................................................................................................... 71
10.7 Change of supply unit ........................................................................................................................ 72
10.8 Mains cables ..................................................................................................................................... 72
10.9 Danish regulations for the connection of mains operated meters ........................................................ 73
11 Communication Modules ........................................................................................... 74
11.1 Communication Modules ................................................................................................................... 74
11.2 Pulse outputs (CE and CV) .................................................................................................................. 75
11.3 Pulse inputs VA and VB ...................................................................................................................... 76
11.4 Modules ............................................................................................................................................ 77
11.5 Mounting an external antenna ............................................................................................................ 81
11.6 Retrofitting modules .......................................................................................................................... 81
12 Data Communication ................................................................................................. 82
12.1 MULTICAL
82 402 Data Protocol ............................................................................................................
12.2 Optical eye ........................................................................................................................................ 84
13 Calibration and verification ....................................................................................... 85
13.1 Connector .......................................................................................................................................... 85
13.2 Test – verification mode ..................................................................................................................... 86
13.3 Handling of different test methods ..................................................................................................... 91
13.4 True energy calculation ...................................................................................................................... 93
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