15
CHAPTER 4
ANALYZER DESCRIPTION
A. POWER REQUIREMENTS
The Model 500 is designed to operate from 4 AA cells supplying a voltage of 4.0
to 6.5 Volts.
The flexible design allows for the use of either 4 AA alkaline primary (non
rechargeable) batteries, or 4 nickel-metal-hydride rechargeable cells. Rechargeable
batteries are recommended and are supplied with the analyzer. If you want to use
non-rechargeable batteries, use the battery holder supplied. Be sure to turn off the
DC charge switch located inside the unit.
A wall-mounted 110/220 volt AC charger is supplied with the high performance
(2500 mAH cells) Ni-MH cells and can be used to charge the batteries or operate
the unit continuously from an AC power source.
NOTE: Non-rechargeable batteries may explode or leak if the AC adapter or
another battery charger is accidentally connected. If you are using alkaline
(non-rechargeable) batteries, be sure to disable the AC charger connection by
toggling the DC CHARGE SWITCH, located next to the batteries, to the down
position marked ‘Alkaline’. See figure 4, page 48.
Battery life is approximately 6-8 hours of continuous operation. If you are using
the thermoelectric cooler, battery life is two hours.
You can check the condition of the batteries at any time by pressing the STATUS
button twice to display the second status screen. The following screen will appear
on the display:
Version: 5.0+
Serial #: 12345
Battery: 5.65 V
Fuel: #2 OIL
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