Error analysis

The main difference between the EL3692 and other analog EL3xxx input terminals from Beckhoff is the fact that it has not just 1, but 9 consecutive measuring ranges.
This opens up new aspects for error and measurement uncertainty analysis.
The absolute measuring error of the EL3692 with 4-wire connection is <0.5% relative to the respective full-scale value.
The thus assured maximum absolute error (relative to the respective full-scale value) is specified as the upper error limit below.

Error analysis 1:
Max. absolute measuring error for each measuring range, full logarithmic diagram

Example: Measurement of 50 Ω in the range 10-100 Ω --> maximum error: 0.5 Ω

This upper error limit results in the following values for the maximum relative measuring error relative to the current measured value (logarithmic diagram).

Error analysis 2:
Calculated maximum relative measuring error relative to the current measured value in the respective measuring range

Example from above: 50 Ω -> max. error 0.5 Ω, corresponding to 1% relative measuring error. The grey area is only shown for illustration and is not a valid measuring range.