Process control meter for use in process control, e.g. for monitoring fluid mass flow rate, density, viscosity or pressure, has temperature compensation that takes into account historical temperature measurement behavior

摘要

Process control meter probe has a sensor arrangement that comprises a first sensor for measuring a primary measurement value and at least a second sensor for monitoring temperature within the temperature probe. The output of the temperature sensor is used by meter electronics to compensate the primary measurement value for temperature fluctuation, by application of a correction value. The correction value is based on the temporal behavior of the temperature measurement signal so that previous temperature values are considered.