ADS Environmental Services IETG FlowHawk QR 775012 A4 - Manual (Page 48)

2-12 IETG FlowHawk Manual
Power regulator dome with potted IS regulator board
The user receives a warning when the internal 12-volt IS battery
pack drops below a specified threshold (IETG recommends 7.5
volts).
External Power
The FlowHawk flow monitor also can receive power from an
external DC source through an external modem unit (EMU, p/n
3800-0148) or external modem unit/multiplexer (EMUX, p/n
106226E) located outside the manhole near the power source.
These units regulate the power coming to the monitor and provide
the communication interface between the user and the monitor. The
EMU houses the GSM/GPRS modem, wireless antenna, and
communication interface/barrier box. The EMUX, serving as the
communication interface/barrier box, houses the modem. The
wireless antenna mounts to a port on top of the EMUX.
Note: The standard FlowHawk flow monitor (p/n 8000-
FHK-60C includes an internal 12-volt IS battery pack that
must be disconnected or completely removed from the
monitor before connecting the external DC power source
to the monitor. However, IETG offers another version of
the FlowHawk flow monitor (p/n 8000-FHK-EP-60C)