14
Reference Manual
00809-0100-4530, Rev DD
May 2016
2.6
Measuring range
The measuring range depends on probe type, dielectric constant of the product and
installation environment, and is limited by the Blind Zones at the very top and bottom of the
probe. In the Blind Zones, the accuracy exceeds ±1.18 in. (30 mm), and measurements may
not be possible. Measurements close to the Blind Zones will have reduced accuracy.
illustrates how the measuring range is related to the Blind Zones and the areas
with reduced accuracy. Values for different probe types and dielectric constants are
presented in section
“Accuracy over measuring range” on page 230
Figure 2-8. Blind Zones and Areas with Reduced Accuracy
Note
Measurements may not be possible in the Blind Zones, and measurements close to the Blind
Zones will have reduced accuracy. Therefore, the 4-20 mA points should be configured
outside these zones.
4mA
20mA
Reduced accuracy
Reduced accuracy
Range 0 -100 %
Upper Reference Point
Upper Blind Zone
Lower Blind Zone
Lower Reference Point