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System Overview
What is it?
The LPI Lightning Warning System is a non-directional lightning detection instrument, designed to
provide indication of nearby lightning strikes and significant changes in the local electrostatic field.
The LPI Lightning Warning System MKIII provides the user with the ability to manage the lightning
risk and to fulfil a duty of care to employees, customers and all related personnel. As occupational
health and safety laws strengthen globally, senior management across a wide variety of industries and
recreational pursuits are now faced with a realisation that they have a duty to warn individuals of the
pending risks associated from lightning. Recent court cases have shown a dramatic change from the
once acceptable "Act of God" defence, to a realisation that management now has a duty to warn.
What does it do?
On detection of a nearby lightning event or significant increase in the electrostatic field, the system
will provide a Warning or Alarm to personnel that an event has occurred or is likely to occur. Detection
and Alarm Indication (via a siren) is performed by the sensor unit, with results being sent wirelessly to
the console for more detailed event Indication and logging.
Corona point
detects increase
in electric field
strength as a
result of:
• approaching storm
• storm cell overhead
Page 4
Storm Cell
LPI
Sensor
Assembly
Whip antenna detects
electric discharges due
to lightning activi
How the LWS works
Document 36 II LWS-MKIII, pub V5 © Copyright 2012 LPI
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