Can a load pin be used in both directions ?
Our load pins are based on the strain gauge technology. Thus, they can be loaded in both directions.
This is especially true if the signal is not amplified (i.e., mV/V).
In the case of an amplified signal (4..20mA), it will be necessary to shift the zero signal; for example, to 12mA.
In addition, at the end of manufacturing of the usual one direction load pins, they are loaded at 200% of their nominal load in order to ensure perfect zero stabilization. This operation is not performed for load pins intended to be used in both directions.
Therefore, it is necessary to specify it when ordering so that we can take it into account during manufacturing.
Since the output signal may be zero, this may be a problem for the detection of wire break or short circuit in the context of positive safety.