3.1. MOUNTING
3.
OPERATION
The 2512 is delivered in a metal cabinet with a metal stand
for
raising the front
of
the
instrument for easier reading. It may also be mounted
in
Carrying Case KA 2000, · which is
highly suitable
for
field use, along with Alphanumeric Printer Type 2312. To mount the
instrument in the Carrying Case KA 2000, first ensure that the instrument is switched
off
and
then remove the bottom panel. This is done by loosening the screw on the bottom
of
the front
panel by half a turn. The bottom panel can now be slid off
to
the rear. Remove the plastic feet
from the panel. These are each fixed by one screw and nut. The panel can now be screwed into
place in the KA 2000 and the 2512 slid onto it and fixed in place by tightening up the locking
screw on the front panel.
~:
~
.:
•··
Fig.
3.1.
Human-Response Vibration Meter Type 2512
and
Alphanumeric
Printer Type 2312 mounted in carrying case KA 2000
and
Seat-
Accelerometer Type 4322, ready to
carry
out
measurements
3.2. POWER SUPPLY
The
2512
may be powered by internal cells
or
by
an
external mains power supply such as the
Power Supply
ZG
Ol99.
The internal cells may be
of
the normal alkaline type (QB 0004), as
supplied with the instrument,
or
rechargeable nickel-cadmium cells (QB 0008) which are
available as accessories. Alkaline cells have
an
operating life
of
18
hours and fully charged
nickel-cadmium cells a life
of
12
hours.
In
addition, the instrument may also be operated via re-
chargeable batteries using the battery charger
ZG
0113, though not via conventional
or
alkaline batteries. Under no circumstances should
an
attempt be made to apply a charging
current to non-rechargeable batteries. Operation with these different types
of
supply is
discussed in the following sections:
17
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