15
Batteries
EasySense Q
is factory fitted with a lithium–ion battery pack. When the batteries are
fully charged they will power
EasySense Q
in Easy Log or remote mode for at least 30
days.
Whenever
EasySense Q
is connected to the mains power supply or the USB compatible
port on the computer, it will automatically re-charge the batteries. A full charge will take
approximately 12 hours.
Notes:
#
The drivers for EasySense Q must be installed before a link (and therefore charging) is
established.
#
If the computer is switched off or in sleep mode, charging via the USB port will stop.
#
EasySense Q can only be connected directly to a computers USB port or by using a powered
USB hub. It will not work with an unpowered hub (EasySense Q requires an output current of
500mA). An extension cables must be of a single direct port extension type.
Lithium-ion batteries are ‘memory-free’ and prefer a partial rather than a full discharge.
Constant partial discharges with frequent recharges will not cause any harm. Frequent
full discharges should be avoided whenever possible.
Ideally
EasySense Q
should be stored at about 40% or more state-of-charge. Do not
store
EasySense Q
with its battery fully discharged. Some reserve charge is needed to
keep the battery and its protection circuit operational during prolonged storage. If
EasySense Q
is to be stored for lengthy periods without use then it’s a good idea to
recharge the batteries every 4 – 8 weeks.
The speed at which a lithium-ion battery will age is governed by both its storage
temperature (preferably less than 40ºC) and state-of-charge. Eventually the battery pack
will no longer deliver the stored energy and will need to be replaced. A fully charged
battery that looses its charge quickly will demonstrate the need for replacement. When
this happens contact Data Harvest and request a battery replacement pack for
EasySense Q
– Product No. 5007.
Automatic Standby
EasySense Q
has no ON/OFF switch. To operate, press any one of the buttons on the
top panel.
When
EasySense Q
is disconnected from the power supply or USB port, it will go into
low power sleep mode to reduce power consumption if more than two minutes have
passed since any measurements have been taken or a button was pressed.
EasySense
Q
will wake up either when a button is pressed or will auto-wake up when
communicating with the computer.
While remote recording
EasySense Q
will stay awake until the interval between readings
reaches 5 seconds or greater – at this point it will begin to use low power (sleep) mode
between samples (waking up just enough in front of the sample time to allow the
sensors to stabilise). While using Timer mode on the unit,
EasySense Q
will stay awake
and fully powered at all times.
Internal Clock and Calender
EasySense Q
internal clock will be updated automatically by the computers clock (date
