Data Harvest EasySense Q 3 Manual - Página 15

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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.

EasySense Q internal clock will be updated automatically by the computers clock (date