Model 202 Ozone Monitor Manual Rev. J-4
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FIGURE 9-2b: Bottom view of Model 202 Ozone Monitor with cover removed
(SN 1899 and below).
Earlier versions of the Model 202 Ozone Monitor came with the pump configuration
(main and backup) shown here. This pump consumes 1 to 2 watts less power than the
pump shown in Figure 9-2a but is louder and has a lower lifetime (~5000 hours each).
If power is the main concern, a Model 202 Ozone Monitor may be purchased with a
Low-Power Option that uses the pump configuration shown in this figure.