Vaisala TWX300 Technical data

www.vaisala.com

Vaisala Thunderstorm Warning System
TWX300

In the main application, lightning warning areas and electric field mills are
monitored in real-time. Remote alarm displays, email notifications, and relays
are triggered once a lightning warning is issued by the TWX300 workstation.

Features and Benefits

Track cloud-to ground and/or

▪

cloud data approaching and
leaving the area of concern

Measure electrostatic field

▪

levels for reliable monitoring
of lightning development
overhead

High-resolution GIS mapping

▪

from MapInfo®

Create multiple warning areas

▪

of any size or shape

Automatically triggers alarms

▪

and all-clears throughout
facility

Proactive lightning risk
management

Vaisala Thunderstorm Warning
System TWX300 uses real-time
lightning information from
Vaisala’s scientically validated
lightning detection networks in
combination with on-site electric
eld mills to monitor approaching
thunderstorms and those that may
develop overhead. Operations and
safety managers rely on Vaisala
Thunderstorm Warning System
TWX300 to support safety goals,
improve operational efciency, and
eliminate the subjective nature of
ceasing activities due to lightning in
the area of concern.

TWX300 is designed for working
environments that are most

vulnerable to the hazards of lightning
and need up-to-the second 24/7
lightning tracking, and automated
lightning warnings including airports,
explosives testing, mining and
blasting operations, munitions depots,
reneries and sporting facilities.

The TWX300 has new features such
as Diagnostic replay to analyze past
events and improve operational
efciencies, lightning density display
mode, email notication of warnings
and all clears, time-controlled email
notication and relay settings, auto­screen image capture to distribute
display information on an Intranet,
alarm le viewer for a visual timeline
of warnings, supports Vaisala’s
secondary data format for use of total
lightning information.

Technical data

TWX300 Workstation

Provided by Vaisala with the Microsoft Windows XP (SP2) operating
system (minimum), TWX300 software, Vaisala Lightning Data Server
(VLDS), Watchdog Timer and Card, and optional Relay Card.

TWX300 Software

Includes the Main Application, Diagnostic Replay, Central Data File
Viewer, EFM Data File Viewer, Alarm File Viewer, Configuration File
Viewer, and TWXS1200 Central Data File Converter.

TWX300 Interfaces

Local Sensors – 0 to 7 Vaisala Electric Field Mill EFM550s
Alarm Distribution – Remote Alarm Display System (RADS) via
RS232/Ethernet Device Server or Modem; Email notification via
Ethernet; or Relays via RS232, RS232/Ethernet Device Server,
or Modem.
Threat Display – Remote Alarm Display System (RADS) and
TWX300 software RADS Display Window

Lightning Data Source

U.S. National Lightning Detection Network®, Canadian Lightning
Detection Network, or from any lightning detection network using
Vaisala Thunderstorm Central Processor CP7000 or CP8000 and
preceding central processors LP (IMPACT) and CPS (SAFIR).

Electric Field Mill EFM550

Range +/- 10,000 V/m max.
Mount Height 30 in. (76.2 cm) min.
See Vaisala Electric Field Mill EFM550 Data Sheet for more detailed
specifications

Remote Alarm Display System (RADS)

Basic Display - Three colored (red, amber, green) 20 dual-LED light
panels support up to five combinations of threat condition
Reliability Features – Visually alerts user to outage of TWX300
processor or communications. Built-in battery backup.

Relay Kit

Relays 8 form C relays rated for 15A at 24DC and 120VAC,

and 10A at 240VAC

Load Rating 5A for all three voltage ranges

Support Services

Training, technical support, and spare parts services are available
for maintaining optimal system performance. Contact your Sales
Representative for Vaisala Lifeguard TWX300 service agreement
information. Vaisala provides a manufacturers warranty for one­year from the date of delivery.

Cloud-to-ground lightning from
Vaisala’s U.S. National Lightning
Detection Network® is used by
weather forecasters and operations
managers to closely monitor
thunderstorm development, strength,
and paths for more accurate severe
weather forecasting and for issuing
warnings.

For more information, visit
www.vaisala.com or contact
us at [e-mail]

The typical Vaisala Thunderstorm
Warning System TWX300
installation leverages an existing
local area network to connect to
the central lightning network and
local electric field mill data sources.
Alarms are distributed through the
remote alarm displays (RADS),
email notification, and relays.

An example of the TWX300 warning
areas in alert as lightning strikes
the property of George H. Bush
Intercontinental Airport in Houston.

Ref. B210678EN-B ©Vaisala 2009

This material is subject to copyright protection, with all
copyrights retained by Vaisala and its individual partners. All
rights reserved. Any logos and/or product names are trademarks
of Vaisala or its individual partners. The reproduction, transfer,
distribution or storage of information contained in this brochure
in any form without the prior written consent of Vaisala is strictly
prohibited. All specifications — technical included — are subject
to change without notice.