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Ref. No. [UMCES] CBL 2016-016
ACT VS16-07
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Figure K.
Long-term stability and thermal stress challenge of the Troll 9000 with Optical DO (sn 51530).
Instrument was maintained in well circulated tank and oxygen content manipulated by alternately varying
water temperature set point between 15 and 25
o
C several times per week of deployment.
Top Panel
: Time
series of EXO2 instrument readings representing 15min intervals with discrete values for Winkler assay of
grab samples taken at sensor level.
Bottom Panel
: Offset in paired DO readings of EXO2 Sonde and
Winkler grab samples.