Valeport rapidPro CTD, Operating Manual

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© 2019 Valeport Ltd
Operation
Page 29
4.3. Deployment
The rapidPro has been designed to be deployed with the Teledyne OceanScience Underway winch system -
rapidCAST. Using this deployment allows the rapidPro to collect profiles to ~400m depth whilst underway at up
to 10kts. See OceanScience documentation for guidance on deployment of the instrument.
rapidPro probes that have been supplied with the OceanScience winch will be fitted with an adapter and tail
spool for attachment to the winch system.
rapidPro probes can, of course, be deployed using any winch or deployment system. Probes that are supplied
independently of the OceanScience winch will be supplied with a tail adapter to fit a shackle for attachment to
the deployment line.
4.4. Pressure Tare
A rapidPro has an auto-tare function. Each time the power key is removed from the profiler, the pressure sensor
is zeroed to atmospheric pressure. The value and time stamp of the latest Tare reading is recorded in the header
of every file. The latest Tare value is applied to recorded data.
A manual Tare can be applied if required using # commands:
#009;
Takes a single reading of the pressure sensor and uses the measured value as a Tare
(note the ‘;’ in the command)
#009;nn
Sets the Pressure Tare to ‘nn’, a user specified value (entered in the chosen units as set
with command #018)
e.g: #009;10.3 sets Pressure Tare to 10.3 dBar, metres or feet.
#010 Instrument responds with current Tare value
Note: a manual Tare value will be overwritten if the instrument is powered down and then back up again using
the Mag Key.