3.
Charging the HFM1 Internal Battery
The HFM1 is a self-contained instrument that incorporates a lithium polymer battery.
Before using the instrument, this battery should be charged. To choose from a range of
charging options see:
Connecting a Power Supply to the Instrument on page 10, 11 and 12.
An external power supply should be connected to the HFM1 in the field.
The unique power-bus plug design was developed by ICT International to simplify the
electrical wiring process. It minimizes the need for custom tools in the field requiring only
that the outer cable sheath be stripped back to expose the copper wire.
As shown in Connecting a Power Supply to the Instrument (page 10) no other tools are
required, with all necessary components and fixings fully incorporated into the instrument
design. Retaining straps ensure the power-bus plugs do not separate from the instrument
when removed from the power-bus during wiring preparation and connection of external
power.
Enabling better research outcomes in soil, plant & environmental monitoring.
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