Document 36 II LWS-MKIII, pub V5 © Copyright 2012 LPI
Page
7
LPI
Sensor
Assembly
• LWS activates alarm when
lightning is within 8 -10 km
• Storm 10 -15 minutes away
• External alarm (siren) sounds
warning of impending danger
8 -10 km
Alarm Status
Established
storm front
Alarm Indication
An Alarm Indication occurs when a near lightning strike or high electric field is detected. Near lightning
strikes are defined as those being within a radius of approximately 8 to 10km of the sensor and could
be close enough to pose a significant risk within approximately 10-15. minutes. High electric field events
are defined as being when the local electric field rises above 7.kV/m. An Alarm status provides to the
user an indication that current activities at site should be suspended and shelter taken in accordance
with established safety procedures.
Summary of Contents for Lightning Warning System MKIII
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