Thermo Scientific MIRAN 205B Series Instruction Manual page 21

Portable ambient air analyzer
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Warning: Intrinsically safe models require special actions with respect to the following
section. Refer to Appendix B for descriptions of these actions.
The calibration procedure is:
1. Remove the battery from the analyzer and connect it to the Charger/Power
Supply using the battery pack interface cable. See Figure 4-3 for location of
battery compartment. Open compartment using special key (Part Number
X0173QH). Remove battery by partially turning each screw until the battery is
loose.
Caution: The conditioning procedure cannot be performed on a battery that is installed
in the analyzer. Do not press the Conditioning Start pushbutton while the battery is
installed. This could damage the battery. It causes the red conditioning lamp to flash and
the charger to return to its previous state.
2. Allow the battery to reach a fully charged state. This condition is recognized by
the illumination of the green Ready lamp.
3. Press the Conditioning Start pushbutton. The green Ready lamp goes out and
the red Conditioning lamp comes on. This indicates that the battery is being
fully discharged, a process which takes up to five hours.
4. At the end of the discharge cycle, the red Conditioning lamp goes out and the
amber Charging lamp comes on. This indicates that the battery is being brought
to a full charge, a process that takes approximately four hours.
5. At the end of the charge cycle, the amber Charging lamp goes out and the green
Ready lamp comes on. The battery is now fully charged and conditioned.
Battery Conditioning
Warning: Intrinsically safe models require special actions with respect to the following
section. Refer to Appendix B for descriptions of these actions.
Battery Conditioning is slightly different than Battery Indicator Calibration.
Conditioning the battery ensures that the battery does not develop a "memory" and that
the battery maintains its full run-time potential. If the battery is typically run to complete
or near complete discharge before recharging it, the conditioning procedure is not
required. If the battery is typically run to only a partial discharge before recharging, then
the battery should be conditioned every 5 to 10 cycles. The conditioning procedure is
similar to the Battery Indicator Calibration procedure except delete Step 2.
Chapter 3 Instrument Preparation
3-7

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