LEFM 3xxCi User Manual
IB1406 Rev 12
Table of Contents
Page ii
August 2017
...................................................................................................................................................... 36
Understanding Flow Calculations ............................................................................................................ 36
Measuring Flow Velocities .................................................................................................................. 36
Measuring Flow Rate .......................................................................................................................... 37
...................................................................................................................................................... 38
Operations ............................................................................................................................................... 38
Definitions ........................................................................................................................................... 38
Normal Operating Conditions .............................................................................................................. 38
Table 6.1 LED Diagnostics ...................................................................................................................... 38
Display ................................................................................................................................................ 39
...................................................................................................................................................... 45
Maintenance ............................................................................................................................................ 45
Introduction ......................................................................................................................................... 45
7.1
General Inspections – Preventative Maintenance Procedures ................................................ 45
7.2
Transmitter Troubleshooting .................................................................................................... 46
7.3
Circuit Board Replacement ...................................................................................................... 47
Table 7.1 Circuit Boards .......................................................................................................................... 47
7.4
IOP – Input/Output and Power Supply Board or Power Fuse Replacement ............................ 48
7.5
CTC and Display Replacement ................................................................................................ 50
7.6
MXR Replacement ................................................................................................................... 52
7.7
Transducer Installation ............................................................................................................ 55
7.8
Analog Input Verification .......................................................................................................... 58
7.9
Analog Output and Pulse Output Verification........................................................................... 58
...................................................................................................................................................... 59
Troubleshooting and Diagnostics ............................................................................................................ 59
Diagnostics ......................................................................................................................................... 59
Table 8.1 Acoustic Signal Diagnostics .................................................................................................... 60
...................................................................................................................................................... 63
LEFM 3xxCi and 3xxCi-R Metrological Seals .......................................................................................... 63
.................................................................................................................................................... 67
Secondary Seals and Seal Failure Indication .......................................................................................... 67
Secondary Seals ................................................................................................................................. 67
.................................................................................................................................................... 68
Recommended Spare Parts .................................................................................................................... 68
