3.2. POWER SUPPLY
3.2.1. Batteries
The available options
for
powering the Analyzer are as follows:
1.
Battery Box ZG 0146 plus six alkaline batteries
QB
0004 (Type IEC LR20). Operating
life sufficient
for
8 hours in normal operation. A
24-hour
recording is also possible,
provided
"low-power"
mode is used.
2.
Battery Box ZG 0146 plus six rechargeable NiCd cells
QB
0008. These can be re-
charged up to
500 times. Operating life
for
each full charge is sufficient
for
6 hours
in normal operation. Battery Charger ZG 0283 is
available as
an
option.
3.
Mains Power Supply ZG 0199 installed in Supply Compartment. Remember that the
external power source voltage must be lower than the battery voltage.
4.
Mains Power Supply ZG 0199 used externally, via the POWER/CHARGE socket. Re-
member that the external power source voltage must be lower than the battery
voltage.
5.
External DC supply with rating 6 V
to
15 V DC and 1
A,
via the POWER/CHARGE
socket. Remember that the external power source voltage must be lower than the
battery voltage.
The
Indoor Climate Analyzer is supplied with six Alkaline Batteries (QB 0004). Replace-
ment
cells may be ordered from
BrOel
& Kjcer,
or
other cells
of
the same size may be
used. The use
of
non-alkaline
dry
cells is not recommended, because
of
the risk
of
damage
to
the Battery Box and the Analyzer caused by chemical action in such cells
after they are exhausted. Rechargeable NiCd cells (QB 0008) may also be installed in the
Battery Box.
3.2.2. Installation of Batteries
1.
Access
to
the Battery Box is on the Rear Panel
of
the Analyzer.
To
insert
or
replace
cells in the Battery Box,
first
remove the box from the Supply Compartment
of
the
Analyzer
by
turning
the
"Release"
screw
with
a
screwdriver.
2.
Unlock the 4 fastening screws on the lid
of
the Battery Box. Remove lid and slide
out the used
cells.
3.
Load the six replacement cells into the box, in pairs as shown in Fig. 3.1, taking
care
to
place each cell the correct way round. Arrows inside the box indicate in
which direction the positive stud
of
the cells should point.
4.
Replace the lid
of
the Battery Box and lock
it
by turning the fastening screws at
each corner
of
the lid by half a turn.
5.
Label the lid
to
indicate whether the cells are rechargeable
or
not.
& WARNING: It is possible
for
cells to explode
if
they are abused, so
NEVER-
(a) attempt
to
recharge non-rechargeable cells;
(b) attempt
to
recharge cells the wrong way round;
(c)
mix
different makes
or
types
of
cells in one Battery Box;
(d)
mix
discharged cells with charged cells.
17
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