|WORLD METEOROLOGICAL ORGANIZATION||
|Explanation of the criteria for classification and numbering of components||
|Explanation of the dates on the component's description|
TELEMETRY SYSTEM FOR DATA ACQUISITION AND FLOOD FORECASTING
1. Purpose and objectives
An automated water level and rainfall data collection system which can operate over existing VHF voice communication circuits, telephone or cell
phone circuits and is a low cost alternative to satellite or dedicated radio network systems. Although the system provides essential data for
Currently the system works with three data logger types, Campbell, Unidata and Aquitel. It can accommodate other data logger types on request.
The Aquitel system comprises five basic units:
(a) A remote unit, installed at each field recorder, can accept signals
(b) A microbase unit, installed at each field centre, communicates by
(c) The support unit is easily carried by one man to remote units. It
(d) The mobile unit is a portable unit operable from a vehicle or a
(e) Software resident in an accompanying microcomputer coupled to the
Signals on one or two channels at each remote unit from a water level
recorder and/or a tipping bucket raingauge.
Output includes records from remote stations for an office archive,
and alarms if preset limits are exceeded.
5. Operational requirements and restrictions
(a) Each remote requires the erection of a pole for a radio aerial and
(b) Two weeks of training by a skilled professional is necessary
(c) Each water level recorder requires a remote unit, and a field party
(d) An existing VHF voice network can be used for radio transmission.
6. Form of presentation
Units with accompanying software and manuals (in English) for field
and office installation.
7. Operational experience
The system has been operating throughout New Zealand since 1985, with
20 microbases and 200 Aquitel remotes in use in July 1999. Several hundred
Campbell and Unidata logger sites are also operating. It has also been purchased for use for flood warning in Fiji.
8. Originator and technical support
National Institute of Water and Atmospheric Research Ltd, P.O. Box
8602, Christchurch, New Zealand
10. Conditions on use
Available as a commercial package.
|(First entered: 1 MAY 86||
Last updated: 16 JULY 99)