biosystems PhD Lite User Manual

16
Save Changes?
YES NO CANCEL
7. Press the MODE button with YES highlighted to
save the new operating mode.
Note: Changing the operating mode or otherwise
reprogramming the PhD Lite is reserved for
authorized employees.
2.4 Batteries
The PhD Lite can be equipped with either Alkaline of
NiMH rechargeable batteries
The PhD Lite must be located in
a non-hazardous location whenever the alkaline
batteries are removed from the instrument.
Removing the alkaline batteries from the instrument
in a hazardous location may impair intrinsic safety.
2.4.1 Alkaline batteries
The PhD Lite with alkaline batteries is designed to
provide up to 17 hours of continuous use with each set
of 3 fresh AA-cell disposable alkaline batteries.
Operation times may be reduced if the PhD Lite is used
with the motorized pump or in low light conditions where
the instrument backlight is on.
2.4.1.1 Replacing alkaline batteries
1. Check that the PhD Lite is not located in a
hazardous (potentially combustible) area.
2. Make sure that the PhD Lite is turned off.
3. Loosen the battery retention screw located at the
top of the instrument, remove the battery cap and
then remove the alkaline batteries.
4. Install new batteries in accordance with the diagram
underneath the battery cap and reinstall the battery
cap.
Note: Always dispose of alkaline batteries in
accordance with local ordinances.
Note: The PhD Lite is designed to turn itself on
whenever the batteries are removed and then
replaced. This ensures that in the event of a power
interruption, the instrument automatically turns
itself back on. Any time the batteries are
momentarily removed or replaced it will be
necessary to manually turn the PhD Lite off if the
instrument is not going to be put into immediate
use.
Use only Duracell MN1500 or
Ultra MX1500, Eveready Energizer E91-LR6,
Eveready EN91, Radio Shack 23-874 (not ATEX
approved)size AA, 1.5V Alkaline batteries, Eveready
CH15 (not ATEX approved) or Radio Shack 23-149
(not ATEX approved) size AA 1.2V NiCad batteries,
or Eveready L91 size AA 1.5V Lithium batteries (not
CSA or ATEX approved). Substitution of batteries
may impair intrinsic safety.
2.4.2 NiMH rechargeable battery
The PhD Lite may be equipped with a rechargeable
NiMH (nickel metal hydride) battery that is designed to
provide up to 17 hours of continuous use between
charging cycles. The NiMH battery pack is contained
inside of the PhD Lite and should only be replaced by
appropriately trained personnel.
Operation times may be reduced if either alkaline or
NiMH PhD Lites are used with the motorized pump or in
low light conditions where the instrument backlight is on.
2.4.2.1 Storage guidelines for the NiMH battery.
Never store NiMH-version PhD Lite instruments at
temperatures above 30 degrees Celsius (86 degrees
Fahrenheit). Nickel Metal Hydride batteries may suffer
deterioration resulting in damage to the internal
components when stored at high temperatures. The
battery may be irretrievably damaged resulting in
reduced battery capacity and voltage.
Biosystems recommends leaving PhD Lite instruments
with NiMH rechargeable batteries on the charger when
not in use.
2.4.2.2 Charging guidelines for NiMH battery
The NiMH battery in the PhD Lite should never be
charged at temperatures lower than 5 degrees Celsius
(40 degrees Fahrenheit) or higher than 30 degrees
Celsius (86 degrees Fahrenheit. Charging at
temperature extremes can cause permanent damage
the PhD Lite NiMH battery.
The PhD Lite must be located in
a non-hazardous location during the charging cycle.
Charging the PhD Lite in a hazardous location may
impair intrinsic safety.
Use only the following
Biosystems chargers to charge the PhD Lite:
U.S. & Canada: 54-26-0201, 54-26-0202, 54-26-0204.
Europe: 54-26-0205, 54-26-0206, 54-26-0207.
U.K.: 54-26-0208, 54-26-0209
2.4.2.3 Charging procedure for NiMH battery
1. Verify that the instrument is turned off. (If it is not,
press the MODE button for three seconds until the
message "Release Button" appears.)
2. Plug the power supply in and check to see that the
“POWER” indicator LED on the charging cradle is
lit.
3. Insert the PhD Lite into the charging cradle. While
the battery is charging the red ‘FAST’ indicator LED
will be lit on the charger.
Note: The “Charge” LED indicator will initially light
up and remain lit for the first 15 minutes regardless
of battery pack voltage.
4. Charging will be completed in 2 hours or less, and
will be indicated by the green ‘’TRICKLE’ indicator

biosystems PhD Lite Specifications

General

Brand	biosystems
Model	PhD Lite
Category	Security Sensors
Language	English