Xylem 6-Series Multiparameter - Manual (Page 113)

Sondes Section 2
YSI Incorporated Environmental Monitoring Systems Operations Manual 2-107
calculation of depth or level. This item will only appear if the pressure sensor is enabled
in the Sensors menu.
(*)Fixed probe This selection allows you to identify how your sonde is being used. If your sonde is
“fixed” or secured to a dock, buoy, platform or similar, select this option. This
information is used in the calculation of depth and level. This item will only appear if the
Pressure-Abs sensor is enabled in the Sensors menu.
(*)Moving probe This selection allows you to identify how your sonde is being used. If your sonde is
being used in depth profiling select this option. This information is used in the
calculation of depth and level. This item will only appear if the Pressure-Abs sensor is
enabled in the Sensors menu.
DO temp co=1.1%/C This selection allows you to input the Rapid Pulse dissolved oxygen temperature
coefficient. Do not change this value unless you consult YSI Technical Support. This
item will only appear if a Rapid Pulse DO sensor is enabled in the Sensors menu.
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ODO temp co=1.32%/C This selection allows you to input the ROX Optical dissolved oxygen
temperature coefficient. Do not change this value unless you consult YSI Technical
Support. This item will only appear if a ROX Optical DO sensor is enabled in the Sensors
menu.
DO warm up=40 This selection allows you to set the amount of time allowed for the Rapid Pulse DO
sensor warm up in seconds. Normally the default value of 40 seconds is adequate for
most applications. However, there may be certain situations in which greater DO
accuracy can be attained by increasing this time. Consult YSI Technical Support if you
feel that your DO warm up time is incorrect. This item will only appear if the Rapid Pulse
Polarographic DO sensor is enabled in the Sensors menu.
(*)Wait for DO When this feature is enabled, the sonde is forced to wait for the Rapid Pulse DO warm up
time to expire before displaying any readings. Note that in SDI12 mode or while
calibrating the Rapid Pulse DO sensor, the warm up time is used regardless of the
activation of this item. Disabling this item allows you to see data without having to wait
during the Rapid Pulse DO warm up time. Under normal operating conditions, this item
should be turned off. If you are using the sonde with a data logger in RS232 mode and
will be turning the sonde “on” and “off” for each sample, then you may want to enable
this item so that only stable DO data are recorded. This item will only appear if the Rapid
Pulse Polarographic DO sensor is enabled in the Sensors menu.
Wipes=1 If any number of optical sensors are enabled, this selection will determine the number of
cleaning cycles which will occur when the wiper is activated manually or automatically.
Since the wiper functions bidirectionally, a selection of “1” results in two passes of the
wiper over the optical face. In most applications, a single cleaning cycle is adequate to
keep the optical surface free of bubbles and fouling. However, in particularly harsh
environments additional cleaning cycles may be needed and can be selected here. This
item will only appear if a optical sensor is enabled in the Sensors menu.
Wipe Int=1 In applications where an optical probe is installed in the sonde and the instrument is
collecting data in the SDI-12 communication mode, the wiper mechanism of the probe
should be activated automatically in a periodic manner to clean the optical surface for
fouling and bubbles. The value entered at this selection is the number of minutes
between each automatic cleaning cycle. Thus, if Wipe Int is set to “5” and the
instrument is in the Run mode, the wiper will activate every 5 minutes with no manual
input. This item will only appear if an optical sensor is enabled in the Sensors menu.
The value of Wipe Int is sometimes overridden when the instrument is set up in the
Unattended sampling mode. Under these conditions, the wiper will be automatically