What is the difference between a fixed differential and an adjustable differential on the 9012 pressure switches?

Issue:
What is the difference between an adjustable and fixed differential?

Product Line:
9013 Pressure Switches - GIC Product

Environment:
US Product

Cause:
Product Characteristics

Resolution:
The unit with the non-adjustable differential provides no option of adjusting the spread between the set points on the switch. The range can be changed but the other point of transition will always be the same value added to the range. The adjustable differential allows the spread to adjusted with in given limits.

Released for: Schneider Electric USA