SENSOR DEVICE PROVIDING INDICATION OF DEVICE HEALTH

摘要

A sensor device (28) is provided for sensing a selected parameter such as pressure or temperature at a selected site, which is typically a remote site, and for generating outputs, normally to a control site, which outputs are either selected steady state or non-steady state outputs, the non-steady state outputs being indicative of the parameters being within a normal or acceptable range and/or the parameters being within an unacceptable or alarm range. The steady state outputs can be indicative either of the parameter being within a normal range or of a device failure. A particular steady state output, for example a null output, may be indicative of all failure conditions or different steady state outputs may be utilized to indicate different failure conditions.