Boltek EFM-100 - Page 6

Table of Figures
Figure 1: Electric Field Mill at Ground Level ........................................................................... 3
Figure 2: Intensification of Electric Field ................................................................................. 3
Figure 3: Field Mill Block Diagram .......................................................................................... 4
Figure 4: EFM-100 Connection Diagram .................................................................................. 5
Figure 5: A poor choice of mounting locations ......................................................................... 8
Figure 6: An excellent choice of mounting locations ................................................................ 8
Figure 7: EPM-1 Power Module Connectors ............................................................................ 9
Figure 8: EPM-1 Voltmeter Connections – Differential (Preferred Connection) .................... 10
Figure 9: EPM-1 Voltmeter Connections – Single Ended ....................................................... 10
Figure 10: EFA-10 Fiber Optic Adapter .................................................................................. 11
Figure 11: Female Fiber Optic Connector ............................................................................... 11
Figure 12: Male Fiber Optic Connector .................................................................................. 12
Figure 13: EFM-100 Field Mill Connections ........................................................................... 12
Figure 14: Sensitivity Plugs ..................................................................................................... 13
Figure 15: Correcting a Field Mill using a Reference Field Mill ............................................. 14
Figure 16: Field Mill Grounding Detail ................................................................................... 16
Figure 17: EFM Options – General ......................................................................................... 17
Figure 18: EFM Options – High Field Alarm ......................................................................... 19
Figure 19: EFM Options – Very High Field Alarm ................................................................. 20
Figure 20: EFM Options – Lightning Alarm .......................................................................... 22
Figure 21: EFM Options – Data Logging ............................................................................... 23
Figure 22: EFM Options – Data Sharing ................................................................................ 24
Figure 23: EFM-100 Software Display ..................................................................................... 27
Figure 24: Approaching Thundercloud ................................................................................... 29
Figure 25: Increasing Field due to Approaching Thundercloud ............................................ 29
Figure 26: Thundercloud Directly Overhead .......................................................................... 30
Figure 27: Electric Field Polarity Reversal .............................................................................. 30
Figure 28: Departing Thundercloud ....................................................................................... 31
Figure 29: End of Storm Oscillation ....................................................................................... 31
Figure 30: Step Changes in Field Magnitude Indicate Lightning ........................................... 32
Figure 31: Precipitation Noise ................................................................................................ 32
Figure 32: Field Mill Cleaning ................................................................................................. 33