Patent ID: 8340791
Filing Date: 2012-12-25
Classification: G01F,G05B

Abstract:
1. An industrial process apparatus for monitoring or controlling an industrial process, comprising: a first process variable sensor configured to sense a first process variable and provide a first process variable sensor output; a second process variable sensor configured to sense a second process variable and provide a second process variable sensor output; a first analog to digital converter configured to sample the first process variable sensor output at a first sample rate and provide a first plurality of samples; a second analog to digital converter configured to sample the second process variable sensor output at a second sample rate and provide a second plurality of samples, wherein the first and second sample rates are asynchronous; a first input configured to receive the first plurality of samples related to the first process variable; a second input configured to receive the second plurality of samples related to the second process variable; and compensation circuitry configured to compensate for a time difference between the first plurality of samples and the second plurality of samples due to the first and second sampling rates being asynchronous and provide a compensated output related to both process variables.