Section 4: Deploying and Operating SBE 19plus V2
52
Moored Mode Setup Commands
Moored mode setup commands following MM apply to Moored Mode
only, and have no effect on operation if the 19plus V2 is in Profiling mode.
MM Set 19plus V2 to Moored mode.
SampleInterval=x x= interval (seconds) between samples
(10 - 14,400 seconds).
NCycles=x x= number of measurements to take and
average every SampleInterval seconds.
Range 1 – 100; default 1. 19plus V2 takes
and averages NCycles samples (each
0.25 seconds apart) each SampleInterval
seconds; averaged data is stored in FLASH
memory and (if MooredTxRealTime=Y)
transmitted real-time.
MooredPumpMode=x x=0: No pump.
x=1: Run pump for 0.5 seconds before
each sample (typical for pumping through
conductivity cell only, with no auxiliary
sensors connected to plumbing).
x=2: Run pump during each sample
(typical for pumping through conductivity
cell and in-line auxiliary sensor).
DelayBeforeSampling=x x= time (seconds) to wait after switching
on external voltage sensors before
sampling (0-600 seconds). Default
0 seconds. Typical values if using:
- SBE 43 oxygen sensor – time is
dependent on membrane thickness and
on water temperature (see Pump
Operation – Moored Mode) . Use with
MooredPumpMode=2.
- Beckman- or YSI-type oxygen sensor –
120 to 180 seconds required to provide
time for sensor to polarize.
Use with MooredPumpMode=2.
- Sea Tech fluorometer - 15 seconds
required to provide time for sensor
to stabilize.
MooredTxRealTime=x x=Y: Output real-time data.
x=N: Do not.
Notes:
• Pump operation is affected by both
DelayBeforeSampling= and
MooredPumpMode=. See Pump
Operation – Moored Mode.
• The 19plus V2 does the integration
for the Quartz pressure sensor after
NCycles= measurements have
been taken.
• NCycles= and
DelayBeforeSampling= affect the
time required to sample. If these are
too high, the 19plus V2 is unable to
take the required number of
measurements and do the
calculations within SampleInterval=.
When it is beginning to log, the
19plus V2 checks all parameters,
and if necessary it internally
increases SampleInterval=.
Note:
The 19plus V2 requires verification
when MM is sent. 19plus V2 responds:
this command will change the
scan length and/or initialize
logging. Repeat the command to
verify.
Type the command again and press
the Enter key to proceed.
The 19plus V2 responds:
Scan length has changed,
initializing logging
Example: If SampleInterval=10 and NCycles=4, every 10 seconds 19plus V2 takes 4 measurements
(0.25 seconds apart), averages data from 4 measurements, and stores averaged data in FLASH memory.
Note:
For a 19plus V2 with optional Quartz
pressure sensor, NCycles= must be
an even number (2, 4, etc.); increasing
NCycles= reduces measurement
noise. See Specifications in Section 2:
Description of SBE 19plus V2 to
determine resolution.
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