SonTek/YSI
42
ADVField Operation Manual (September 1, 2001)
• Data is output in ASCII-text in the following, single-line format. Example:
87514 468151 0 351354
○ CTD temperature in units of 0.0001°C
○ CTD conductivity in units of 0.00001 Siemens per meter
○ CTD pressure in units of 0.001 decibar
○ CTD salinity in units of 0.0001 ppt
• After data collection begins, there is a delay of about 10 seconds before the CTD data sam-
ple is transmitted.
• Note that the CTD sensor may not include a pressure sensor.
CTD TALK
• Establishes direct serial communication with the external CTD. Refer to the CTD’s techni-
cal for available commands.
• To return to the ADV command mode, send a
BREAK
.
CTDSensorInstalled Set [YES|NO]
• Selects or disables the CTD sensor.
• Set at the factory. Does not need to be changed except in some special cases.
3.9.4. External Sensor Commands – Resonance Pressure Sensors
These commands apply to systems that have an external pressure sensor installed (§4.9).
ExtPressureSensorInstalled Set [NONE|PAROS|DRUCK|PAROSFREQ]
• Selects or disables the external pressure sensor type (§4.9).
• Set at the factory. Does not need to be changed except in some special cases.
• The external pressure sensor option limits the maximum sampling rate of an ADV to 4 Hz
for the
PAROS
and to 10 Hz for a
DRUCK
or
PAROSFREQ
. To collect data at faster rates, you
must disable the external pressure sensor option.
PressFreqOffset Set [d]
• Default parameters (in kHz):
0
(for
DRUCK
);
21
(for
PAROSFREQ
)
• Sets/displays frequency offset (in kHz).
• This parameter is set at the factory and should not be changed by the user.
PAROS CONT or DRUCK CONT or PAROSFREQ CONT
• This command provides a useful tool to verify and troubleshoot the frequency sensor.
• For
PAROS
sensors:
○ This command continually outputs pressure reading in dbar.
○ If the pressure reading is zero, the connection between the sensor and the processing
electronics may be damaged (or open).
• For
DRUCK
and
PAROSFREQ
sensors:
○ This command outputs a sample consisting of converted pressure (dbar), temperature
(°C), and raw frequency counts (Hz) in the following format:
Druck Press = 10.03192 Temp = 22.11 Freq = 8055.674
○ The
DRUCK
frequency range (in air) is 7 to 10 kHz; the
PAROSFREQ
is 35 to 38 kHz.
○ If the frequency reading is zero or outside its range, the connection between the sensor
and processing electronics may be damaged/open or the frequency offset is incorrect.
To Next Page
Loading...
Need help?
General
