Model B12-69 Wet Oxidant Gas Transmitter
O & M Manual
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Rev-G, 7/15
MAINTENANCE
The only maintenance required on the B12-69 system is periodic sensor service. The wet
oxidant gas sensor uses a microporous membrane that can lose sensitivity with the accumulation of
solids or precipitates in the membrane. As a preventive measure, sensors should be rebuilt with new
membrane and electrolyte about every 3-4 months.
Follow the sensor assembly procedure on pages 10 and 11 of this manual to replace the
membrane and electrolyte.
