Often times there is little concern over warm-up drift in a pressure sensor since the application can either zero out the inherent  drift  of  the  sensor  after  the  system  has  reached operating temperature or the warm-up drift contribution of error is insignificant in the application. However, there are some  applications  that  require  very  high  accuracy  and do not have the luxury of waiting for the system to warm-up prior  to  usage.  Some  of  these  applications  would  include hospital  respirators,  spirometry  equipment  and  unmanned aircraft to name a few. Here, the contribution of error due to warm-up drift can be significant.