YSI Data Scout - Manual (Page 13)

factors (Figure 3.10). After selecting the desired units of measure, click OK to confirm. You can select Cancel to return to the Live tab
without saving any changes.
Some groundwater installations record the distance from ground surface or some other reference point to the surface of the water. This
is commonly called a TOC or “Top of Casing” measurement because the reference point for the measurement is typically at the top of
the well casing. The transducer may be easily configured for a TOC measurement by checking the “Configure TOC” check box (Figure
3.11). The “Span Value” will be automatically configured based on the units selected via the radio buttons on the left of the window.
After accepting this adjustment, a new offset value can be entered using the Zero Level or “Set Fixed Offset” menu (see Section 3.2.4).
Click on the Zero Level or Set Fixed Offset button, then select the “is submerged” option. Deploy the Level Scout. Next, measure the
distance from the top of casing or reference point to the surface of the water, enter that value in the entry box, and select OK. The
transducer will automatically calculate the correct offset value for its installed location. Anytime the level (pressure) measurement of
the transducer is referenced to TOC, its units name is displayed with an asterisk suffix. For example, mH2O*
Note: Anytime Data Scout displays an overlay screen such as the one in Figure 3.10, live data collection is temporarily paused.
Figure 3.9 Figure 3.10 Figure 3.11
3.2.3 CHANGE TEMPERATURE UNITS
The units of measurement for temperature can be changed between Fahrenheit and Celsius through the Temperature Units Label
button that is next to the live temperature reading on the Live tab. Selecting this button will open a new screen allowing the user to
change temperature units (figure 3.12). Select OK to confirm the change.
Figure 3.12
3.2.4 ZERO LEVEL OR SET FIXED OFFSET
Transducers may require periodic adjustment to correct for drift associated with aging and the environment. In addition, users may
wish to adjust a transducer’s output to a common reference point in order to more easily correlate data from multiple sites. The Zero
YSI Incorporated Data Scout 13