Thermo Scientific SmartView SV100A User Manual page 63

Thermo Fisher Scientific
a. Assume you want to record the output from a pressure transducer
which gives a 0–5 Vdc output signal, which coincides to a pressure
of 0–3000 pounds per square inch (psi). The process being
monitored typically runs at 2200 psi ±5%; this is the area of
interest. The transducer output, which peaks at 5 V, is connected to
a live point, and the 5 V full-scale range is selected to cover this
range.
Since the maximum input voltage is only 5 V on a 5 V range, the
input scale is set to a low end of 0.0 V and a high end of 5.000 V.
To convert this directly to psi, the output scale is set to a low point
of 0.0 psi and a high point of 3000.0 psi. The point now becomes 0
to 3000 for an input of 0–5 V, scaled linearly across the range. The
engineering units can be set to psi, and the point tag can be set to
any label that identifies this process variable.
b. To maximize the display resolution, set the display scales with a low
end of 2000 and a high end of 2500. This scale point is now
assigned to the bargraph and the chart graph. The display then
charts from 2000–2500 psi, maximizing the display resolution for
the value of interest. Set the low and high scales by pressing the
associated boxes and entering the values.
6. Bands: The band feature enables you to easily identify a maximum of
three ranges by applying colors to them. For example, three bands have
been programmed for Point 1 in Figure 5–5. The bands are displayed
in Figure 5–6. You can quickly locate the 5.000–10.000, 10.000–
20.000, and 20.000–40.000 ranges and in what range the point falls.
Figure 5–5.
Point Programming
Programming
SV100A/SV10AC User Guide 5-5