idronaut Ocean Seven 310 - Power Consumption Reduction; Warm-Up; ON;OFF Cycles; Shipping Conditions

SECTION THREE- DATA ACQUISITION
IDRONAUT – Brugherio (MB) OCEAN SEVEN 310 CTD 01-2019
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3.8.1 Power consumption reduction
The probe is equipped with a firmware protection to prevent the battery pack from running down. At
the beginning of the unattended acquisition cycles and each minute during the unattended acquisitions,
the battery energy is monitored and compared to a configurable limit. If the battery voltage falls below
the configured limit, the unattended acquisition is immediately terminated.
3.8.2 Warm-up
A warm-up time-out to stabilize the sensor reading is mandatory. In case of physical sensors, a 3-second
time-out is sufficient, while, a 5-second time-out is needed if the probe is equipped with chemical
sensors like oxygen and pH. If the probe interfaces the GO-1018 rosette the warm-up time-out must be
at least 30s.
3.8.3 ON/OFF cycles
Whenever the probe is switched OFF, please wait 10 seconds before switching it ON again. This waiting
time allows the probe to perform a correct shutdown and start-up procedure.
3.9 SHIPPING CONDITIONS
The probe is shipped without batteries and with the pH and reference sensor hydrating caps installed.
The latter must be routinely refilled with the proper solutions to guarantee the pH and reference sensor
hydration.
3.10 SENSORS
Pressure sensor Before executing a data acquisition in relation to pressure, calibrate (null) the
pressure sensor offset.
Conductivity sensor After using the probe in seawater, wash the conductivity sensor with fresh
water. Do not leave the probe exposed to direct sunlight. Wet the conductivity
sensor immersing the probe in salt water for one night before starting the
measurement campaign.
Oxygen sensor Calibrate the sensor before starting the acquisition cycles. Do not perform any
calibration on the deck where air concentrated of water and/or oil aerosol can
disturb the calibration.
3.11 REAL TIME DATA ACQUISITION
Real-time data is immediately shown on PC screen. This method allows the shown data sets to be
collected in the probe data memory upon operator’s request. Data collection is achieved by pressing <S>
key. Once pressed at the end of data, an “M+” appears indicating that the shown data has been stored
in the probe memory. The <ESC> key terminates the manual data acquisition. At the end of data
acquisition, in case some data has been collected, the data acknowledgement procedure is performed
(see the descriptive paragraph at the beginning of this section).
Place the CTD on the sampling point - type<any key>to start,<ESC>to abandon
Manual data acquisition - type<S>to toggle data storage,<ESC>to leave
Press Temp Cond Sal Dens O2ppm O2sat% pH eH Time & Memory
0.12 17.055 45.353 35.352 1.0258 2.35 30.1 7.895 214.8 11:14:26.8 M+
0.19 17.010 45.304 35.350 1.0258 2.17 27.8 7.902 208.7 11:14:27.0 M+
0.09 17.011 45.300 35.345 1.0258 2.17 27.8 7.901 208.7 11:14:27.4 M+