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ALWS™ - Advanced Lightning
Warning System
The TOA Advanced Lightning
Warning System (ALWS) typically consists of three or more TOA
electrical field mills (EFM) which continually measure the changes in
atmospheric electrical fields out to a range of 6 or more miles from
the sensor. A photo of the EFM appears below.
Analysis and display of
the atmospheric charge data collected from all of the EFM sensors in
the ALWS are provided by the Lightning Warning Processor (LWP) which
produces a broad range of analyses and warning outputs. Such outputs
include trend charts, site alarms and sensor status reports.
TOA Electrical Field Mill Technical Specifications
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Operational: |
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Accuracy
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0.5% of reading |
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Range
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Dependent
on conditions, minimum of 6 miles |
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Reliability
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100%
notification of field change |
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Response
Time
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Programmable
(based on user selected options) |
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Signal
Interface
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2
digital communications ports and 1 analog |
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Measuring
Range
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Programmable
from (0 to 1 kV/m) to (0 to 30 kV/m) |
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| User
Selectable Options: |
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Readings
per second
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1
to 50 (software selectable) |
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Calibration
procedure
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Software
based |
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Software
Upgrades
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Remote
software installable |
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Remote
Diagnostic
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Operating
temperature
Power supply voltages
Motor turning indication
DAC operations
Factory low level diagnostics |
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