Download Manual - Keison Products

Section 4
System Start Up
4.1 Power up
Turn on the switch at the back of the MET ONE 237 particle counter (refer to Figure 6 on
page 12). The counter will display the main screen when turned on (Figure 7 on page
15). If the LO BATT indicator is lit, plug in the AC adaptor to charge the battery. The
counter may be operated during the charging of the battery.
Note: Use the AC adapter provided by the manufacturer to charge the battery or operate the
counter. Other off-the-shelf power modules may have different power, current or polarity which could
damage the counter.
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