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Console
The LWS MkIII Console provides the user interface to the LWS via its Webserver. It communicates with
the sensor providing the user access to current lightning information.
This information includes details such as the current Lightning Warning Level, and recent lightning
related activity such as Lightning Strikes and Electric Field Levels.
The Console is typically sited in a secure location where it can either be connected directly to a
computer by cross-over Ethernet cable, or by straight-through Ethernet cable to a local network,
allowing the user to access the relevant data and system settings. The Console has relay outputs for
Alarm, Warning and All Clear indications suitable for switching contacts (Note: Only a small amount
of current can be supplied by the Console alarm relay outputs, and therefore a siren or other indicator
cannot be driven directly from the outputs).
LWS Sensor Assembly
The LWS Sensor Assembly (Microprocessor, Sensing Antenna, Alarm/Warning/All Clear Indicator and
Earth Rod) is the integral component of the LWS system, it provides all decision making in regards to
recorded lightning events and subsequent alerts.
The LWS Sensor Assembly is typically mounted at a suitable location at site and the monitoring of all
lightning activity is controlled by an on board microprocessor. This works in conjunction with the sensing
antenna to detect changes in the electric field and approaching lightning discharges. Depending on
the intensity of the electric field or proximity of the lightning, the sensor provides an event indication
via wireless communication to a receiving antenna and console unit which is positioned within 1 km
line of sight of the sensor.
Each sensor also contains an Alarm/Warning/All Clear Indication device. Depending on customer
preference this is provided by a siren, which allows the user to communicate situation events
to all personnel in accordance with site safety policies and procedures. In the event of temporary
communication loss between the Console and Sensor, indication of event detection still occurs at the
sensor despite the communications loss.
Depending on the layout of the site and the area to be monitored, LPI can customize a solution.
LPI can also provide a suitable Mounting Pole (OD 7.0mm, ID 61.5.mm) to mount the LWS Sensor
Assembly to. If the Mounting Pole option is included, suitable locking bolts are also provided to keep
the LWS Sensor Assembly secure.
Event Indication Levels
As the LWS MkIII sensor detects lightning activity or increases in the electric field, event indications
are made at the Sensor and are communicated to the Console for processing. If the event falls within
a predetermined level, the following indications are provided to the user.
Page 5
Document 36 II LWS-MKIII, pub V5 © Copyright 2012 LPI
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