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DataRAM4 Particulate Monitor Forest Service User's Guide

Preparing the DataRAM for Field Operation


Charging the Battery

If the DataRAM has not been used for more than 1 month, the battery will need to be fully recharged. Plug it into a 120-volt line for about 12 hours to restore it to full operating capacity. A new and fully charged battery can provide at least 20 hours of con-tinuous operation at temperatures above 60 �F. The DataRAM can operate continuously using its universal charger/power supply-simply attach the universal charger/power supply to the DataRAM and plug it into a 120-volt power source. Never let the internal battery run completely down. If this happens, the unit may need to be sent to MIE for repair.

Uncapping the Inlet

Before operating the DataRAM, the protective Swagelok stem cap must be removed from the air inlet and stored on the gray pod on the back panel (figure 3). The DataRAM should never be operated with the stem cap covering the inlet.

Switching the Power Selector

The three-position, locking power-selector switch on the rear panel should be switched 'OFF (0)' (middle position) when the unit is stored or transported. To enable the DataRAM to operate with its internal battery or the charger, the power selector switch must be 'ON (1)' (up position). The 'EXT (1)' (down position) is used only when an external dc source (such as solar power or an external battery) is powering the unit. To change the locking position, pull the handle out while moving the power selector switch to the desired position.

An image showing how components connect to the DataRAM4
Figure 3-Back-panel view of the DataRAM4.

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