User's Manual

Speed Tx User Manual
Miltel Communications Ltd. 4
Chapter 2
Theory of Operation
2.1 General Description
The Speed Tx is the first link in the water readings collection system. It is an
independent unit that does not require an external power source, wiring, or the
preparation of an infrastructure.
The unit is installed in proximity to the water meter/s and is connected to several
adjacent meters.
Figure 2-1 (see next page) shows a typical installation of a Speed Tx unit, connected
to several meters (of various types) at a single location. The unit can be connected to
any type of meter which has a pulsed output (a passive magnetic open/short reed
relay).
The Speed Tx acquires the consumption data from the water meters and stores this
data in its memory. The unit includes a miniature low-power RF transmitter which
transmits data on a periodic basis to a regional concentrator (directly or through a
relay station).