ABB PFTL 101 User Manual page 13

Pressductor PillowBlock Load Cells, Horizontal Measuring PFTL 101, User Manual
2 Description
3BSE009965R0401 en Rev E
Repeatability error
Repeatability error is defined as the maximum deviation between repeated readings under identical
conditions. It is expressed as a percentage of the sensitivity at nominal load.
Compensated temperature range
The temperature drifts of the load cell have been compensated for in certain temperature
ranges. That is the temperature range within which the specified permitted temperature drifts (i.e.
zero point and sensitivity drifts) of the load cell are maintained.
Working temperature range
Working temperature range is the temperature range within which the load cell can operate within
a specified accuracy. The maximum permitted temperature drifts (i.e. zero point and sensitivity
drifts) of the load cell are not necessarily maintained in the whole working temperature range.
Storage temperature range
Storage temperature range is the temperature range within which the load can be stored.
Zero point drift with temperature
Zero point drift is defined as the signal change with temperature, related to the sensitivity, when
there is zero load on the load cell.
Sensitivity drift with temperature
Sensitivity drift is defined as the signal change with temperature at nominal load, related to the sen-
sitivity, excluding the zero point drift.
Signal
Zero
point
drift
F
nom
Figure 8. Sensitivity drift with temperature
Deflection
Deflection is the total deformation in the measuring direction of the load cell when the load is
increased from zero to the nominal value.
Sensitivity
drift
Force
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