User's Manual

DRAFT
Chapter 1: System Overview 13
DRAFT
©
Datamatic, Ltd. 2000 - 2005
Config Tester (CT) for Water FIREFLYs
The Config Tester (CT) is similar to
the PPU. It is a stand-alone device
for resetting the FIREFLY to
dormant and factory configurations.
Once coupled with the MIU and
activated, there are three lights
which display the status:
Yellow = Updating
Green = Successful
Red = Unsuccessful
FIREFLY Meter Interface Unit (MIU) – Water
The FIREFLY Meter Interface Unit
(MIU) tracks and transmits reading
data. Each MIU includes
ProfilePLUS which tracks and
stores over 1,700 of the most recent
readings. For example, the MIU can
be configured to record 72+ days of
hourly consumption readings,
enabling the resolution of billing
complaints.
The FIREFLY signal includes the
meter number, meter reading, battery
voltage, tamper flag, and a leak
indicator.
The FIREFLY MIU is powered with a 3.6-volt lithium chloride D-cell battery.
Material: Polycarbonate
Construction: Ultrasonic welding
Temperature Rating:
Sensor-end: -10° C to +43° C
Wire-end: -40° C to +85° C
Radio communications: 916.5 MHz
Radiated power: .75 mW