If a vacuum switch has a set point of -50 and a deadband of 10%, what pressure will it reset at?

When dealing with a vacuum switch with a specified set point and deadband, it's important to understand how these values interact to determine the pressures at which the switch actuates and resets.

In this case, the set point is -50. The deadband percentage is applied around the set point, and a deadband of 10% means that there will be a variation of 10% of the set point in the operation of the switch. To calculate the deadband value, you first convert the percentage into a numerical value.

10% of -50 is -5. This means that the switch can activate at -50 and will reset once the pressure increases by this deadband amount. Consequently, the vacuum switch will reset when the pressure crosses the threshold defined by subtracting the deadband from the set point.

Since the set point is -50 and the deadband is -5 (10% of -50), the reset point for the switch will be calculated as follows:

-50 + 5 = -45

Thus, the pressure at which the vacuum switch will reset is -45. This understanding is critical for applications that rely on precise pressure control, ensuring that the system operates within the intended range without unintended activation or deactivation