Installation Instructions

Flume Intelligent Water Monitoring System Operating Overview
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Message Operation
Messages from/to the Sensor are transmitted using 915MHz with the Bridge which also
communicates with the customer WiFi network using 2.4GHz. An overview of the Sensor and
Bridge message communication appears below.
Sensor/Bridge Communication
A frequency hopping method is utilized across 50 channels where the channel dwell time is
150ms. For example, in a 20 second transmission there are 20/150ms=133.33 channels. Given
the sequence repeats every 50 channels each channel will on average be occupied by
1333.33/50*150ms=400ms.
Bridge/WAP Communication
Industry standard 2.4MHz WiFi communications are utilized between the Flume Bridge and
customer supplied WAP. The ubiquitous 802.11 b/g/n operation is supported with WPA/WPA2
and WEP/TKIP/AES in station mode.
Messages transmitted through the customer WiFi network are routed to the Flume Cloud
Storage where the messages are parsed, and data stored into a data base for further reporting
by the Flume Software Application.