Calibration tolerances are based on process requirements and do not use manufacture accuracy specification.
Pressure Switch Calibration Tolerances -
-Generally +/- 1 psig for pressure switch with setpoint < 100 psig
-Wider tolerance ok depending on purpose
-Tolerance N/A for reset point unless critical to process.
-Generally +/- 1 deg C is for RTD input. 2 deg C for thermocouple input.Wider for filled bulb and extreme temperatures if process requirement allows.
- +/- 1 inch