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4 Check and service o-rings.
Before replacing the battery cover, check and service the four
o-rings.
Ensure that the o-rings are not nicked or torn and that they
have no contaminants or particles on them or the sealing
surfaces inside the battery cover. Clean the o-rings with a
lint-free cloth. en apply a thin coat of Krytox® lubricant
to each o-ring.
5 Replace battery cover.
Screw the battery cover clockwise until it seats snugly
against the rubber gasket. Do not overtighten.
*Battery life specification
When using alkaline batteries: Approximately 90 days at
20˚C at a 15-minute logging interval, and temperature/
conductivity, pH/ORP, Optical DO, and turbidity installed.
Battery life is heavily dependent on sensor conguration
and is given for a typical sensor ensemble.
When using rechargeable nickel metal hydride (NiMH)
batteries: Estimated battery life is not available because
NiMH batteries vary greatly in manufacturer capacity and
discharge curves. We recommend a NiMH D-cell battery
with a minimum rating of 10,000 milliamp hours that are
fully charged each time they are used.
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