Sensitivity - ABB SmarTac Applications Manual

3 Application guide

3.3.3 Sensitivity

3.3.3 Sensitivity
Introduction
When/if SmarTac is affected by the welding equipment during searching, and the
trigger reference is set before searching, the sensitivity will be as shown in the
following diagram.
Diagram
The diagram shows SmarTac's working range, which is the area to the right of the
vertical dashed line in the diagram. This line is equivalent to a load of 1.5 k ohm.
On the Y axis
On the X axis
xx1400001477
30
Sensitivity = Object contact resistance in ohms
Equipment load on the measurement circuit in ohms
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Application manual - SmarTac
3HAC024845-001 Revision: A