What is the accuracy or repeatability of a pressure switch?

Accuracy normally refers to conformity of an indicated value to an accepted standard value. Since there is no indication in switch products, the term repeatability is used as the key performance measure. Repeatability is the closeness of agreement among a number of consecutive measurements of the output setpoint for the same value of the input under the same operating conditions, approaching from the same direction for full range traverses. Using this definition, the accuracy and repeatability of an Ashcroft^® pressure switch is typically +/- 1% of full range.