idronaut Ocean Seven 304Plus Operator's Manual page 60

APPENDIX A – DISSOLVED OXYGEN SENSOR
Sensor body:
Compensation:
Life:
Calibration frequency:
Maintenance:
Standard version 700 bar
Type:
Measurement range:
Accuracy:
Resolution:
Polarization voltage:
Response time:
Max Pressure:
Sensor body:
Compensation:
Life:
Calibration frequency:
Maintenance:
A.3 DISSOLVED OXYGEN SENSOR MAINTENANCE-FREE VERSION – 5 bar only
Type:
Measurement range:
Accuracy:
Resolution:
Polarization voltage:
Response time:
Max Pressure:
Sensor body:
Compensation:
Life:
Calibration frequency:
Maintenance:
A.3.1 Oxygen measurement priming
The OCEAN SEVEN 304Plus CTD allows the operator to obtain the oxygen data either expressed in
ppm or % Saturation. The formula which connects these two functions is given as by:
The relevant formulae for the computation of saturation and solubility can be found in the below
section.
IDRONAUT – Brugherio (MB)
black plastic (PPS).
automatic compensation of pressure and thermal variations.
2 years if intensively used to perform continuous monitoring, up
to 4 years if used weekly to perform daily profiling or monitoring.
weekly.
measuring membrane replacement, electrolyte replacement.
polarographic with Pt/Ir cathode
and Ag(99.99%) anode
0... 50 ppm 0... 500% sat.
0.1 ppm 1 % sat.
0.01 ppm 0.1% sat.
650 mV DC
3s @20°C
700 bar
titanium.
automatic
pressure and thermal variations.
2 years if intensively used to
perform continuous monitoring,
up to 4 years if used weekly to
perform
monitoring.
weekly.
measuring membrane
replacement,
electrolyte replacement.
polarographic with Pt/Ir cathode and
Ag(99.99%) anode
0... 50 ppm 0... 500% sat.
0.1 ppm 1 % sat.
0.01 ppm 0.1% sat.
650 mV DC
30 s (membrane @ 20°C)
5 bar
black plastic (PPS)
automatic compensation of pressure
and thermal variations.
2 years if intensively used to perform
continuous monitoring, up to 4 years if
used weekly to perform daily profiling
or monitoring.
weekly.
maintenance free.
ppm = Saturation x Solubility / 100
OCEAN SEVEN 304Plus CTD
compensation of
daily profiling or
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12-2015